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Memory per empty terminal session (shim) #205

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opened 2026-10-13 12:40:48 +00:00 by kayg · 438 comments
kayg commented 2026-10-13 12:40:48 +00:00
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Owner (2026-10-13): "1.8 MiB is a bit much for empty terminals? can we get it near to a 1 KB?"

Measured on production (monitor01), 2026-10-13

  • 70 shims (one per terminal session, infraternal __shim --session …): PSS 124.3 MiB total (~1.8 MiB each), max RSS 7.5 MiB.
  • One empty shim, smaps_rollup: Rss 1812 kB, Pss 1808 kB
    • Private_Clean 852 kB: binary text mapped from /usr/local/bin/infraternal, but NOT shared (shims started before different deploys map different, now-unlinked inodes)
    • Private_Dirty / Anonymous 956 kB
    • stack 52 kB, another anon mapping 84 kB
  • The shell process itself is not counted.

Goal

Get the per-empty-terminal cost as near to ~1 KB as possible; explain what is reachable with one process per session (contracts/shim.md, D13/D128/D240) and what needs another architecture.

Plan

  1. Reproduce on the perf VM (D256) with the production-recipe static binary: N=1/10/100 empty shims, per-shim PSS/RSS/anon/private-clean, breakdown of the anonymous part.
  2. Prototype and measure reductions that keep one process per session (each with bytes saved and attach/echo latency).
  3. Measure the floor: one process per user hosting all of that user's sessions, plus kernel per-PTY cost.
  4. Options with measured trade-offs for the owner. Only decision-free reductions land, on branch shim-memory from origin/dev.
Owner (2026-10-13): "1.8 MiB is a bit much for empty terminals? can we get it near to a 1 KB?" ## Measured on production (monitor01), 2026-10-13 - 70 shims (one per terminal session, `infraternal __shim --session …`): PSS 124.3 MiB total (~1.8 MiB each), max RSS 7.5 MiB. - One empty shim, smaps_rollup: Rss 1812 kB, Pss 1808 kB - Private_Clean 852 kB: binary text mapped from /usr/local/bin/infraternal, but NOT shared (shims started before different deploys map different, now-unlinked inodes) - Private_Dirty / Anonymous 956 kB - stack 52 kB, another anon mapping 84 kB - The shell process itself is not counted. ## Goal Get the per-empty-terminal cost as near to ~1 KB as possible; explain what is reachable with one process per session (contracts/shim.md, D13/D128/D240) and what needs another architecture. ## Plan 1. Reproduce on the perf VM (D256) with the production-recipe static binary: N=1/10/100 empty shims, per-shim PSS/RSS/anon/private-clean, breakdown of the anonymous part. 2. Prototype and measure reductions that keep one process per session (each with bytes saved and attach/echo latency). 3. Measure the floor: one process per user hosting all of that user's sessions, plus kernel per-PTY cost. 4. Options with measured trade-offs for the owner. Only decision-free reductions land, on branch `shim-memory` from origin/dev.
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chart-1.png chart-2.png chart-3.png chart-4.png
kayg commented 2026-10-13 12:41:17 +00:00
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Start: branch shim-memory from origin/dev dcf9dbb94b (worktree .worktrees/shim-memory). Building the production-recipe static x86_64 musl binary (pinned Zig, D213) for the perf VM baseline.

Start: branch shim-memory from origin/dev dcf9dbb94b52d5d2e805a0474e74dd42764159fe (worktree .worktrees/shim-memory). Building the production-recipe static x86_64 musl binary (pinned Zig, D213) for the perf VM baseline.
kayg commented 2026-10-13 12:44:07 +00:00
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Finding 1 (kernel floor, perf VM infraternal-perf-test, 4 vCPU, kernel 6.12, idle, under the perf lock): every terminal session pays this in the kernel no matter how the userspace side is built.

ptycost.py opens 2000 PTY pairs in one process (no shell), then registers each master in epoll, then writes a 13-byte prompt into each. Three runs, per pair:

item KiB per session
open PTY pair: VmallocUsed (two n_tty line-discipline buffers, master and slave, 3 pages each) 24.0
open PTY pair: Slab (tty_struct x2, files, inode) 1.97–2.19
first output (tty flip buffer) 1.67
epoll registration 0.17
total ~27.9

So ~1 KB per empty terminal is not reachable with a real PTY on Linux, under any process model: the kernel alone is ~28 KiB per terminal, and the user's shell process (not counted in the 1.8 MiB) is another ~1–3 MiB. Userspace can only shrink the part above that.

Script: attached below.

Finding 1 (kernel floor, perf VM infraternal-perf-test, 4 vCPU, kernel 6.12, idle, under the perf lock): every terminal session pays this in the kernel no matter how the userspace side is built. `ptycost.py` opens 2000 PTY pairs in one process (no shell), then registers each master in epoll, then writes a 13-byte prompt into each. Three runs, per pair: | item | KiB per session | |---|---:| | open PTY pair: VmallocUsed (two `n_tty` line-discipline buffers, master and slave, 3 pages each) | 24.0 | | open PTY pair: Slab (tty_struct x2, files, inode) | 1.97–2.19 | | first output (tty flip buffer) | 1.67 | | epoll registration | 0.17 | | **total** | **~27.9** | So ~1 KB per *empty terminal* is not reachable with a real PTY on Linux, under any process model: the kernel alone is ~28 KiB per terminal, and the user's shell process (not counted in the 1.8 MiB) is another ~1–3 MiB. Userspace can only shrink the part above that. Script: attached below.
kayg commented 2026-10-13 12:44:15 +00:00
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Kernel-floor script (previous comment): ptycost.py.txt

Kernel-floor script (previous comment): [ptycost.py.txt](https://git.kayg.org/attachments/5d12d35f-317f-4632-b937-0f30110baad6)
kayg commented 2026-10-13 12:53:45 +00:00
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Finding 2 (floor prototype, perf VM, idle load 0.7–1.5, under the lock): one process hosting N sessions, each with the production PTY spawn (Pty::spawn_with_readiness, root's bash), the production Ghostty Terminal (80x24) and the lazy output Ring. Measured after the shells printed their prompts (38 bytes each). Built from origin/dev dcf9dbb9 as a static musl example in a scratch worktree (never merged): session_host.rs.txt

N sessions in one process per-session PSS growth per-session anonymous growth
100, with VT 69.9 KiB 59.6 KiB
500, with VT 61.2 KiB 59.1 KiB
100, no VT (PTY + struct + ring only) 2.1 KiB 0.76 KiB
500, no VT 0.90 KiB 0.63 KiB

So in a shared process the per-session userspace floor is ~0.6–0.9 KiB without terminal state, and ~59 KiB with an empty 80x24 Ghostty terminal (primary + alternate screen page lists). Add the kernel's ~28 KiB per PTY (finding 1). An empty session therefore costs at least ~29 KiB (no VT in userspace) or ~88 KiB (with VT) in any architecture; ~1 KB is reachable only for the userspace bookkeeping part, not for a terminal as a whole.

Finding 2 (floor prototype, perf VM, idle load 0.7–1.5, under the lock): one process hosting N sessions, each with the production PTY spawn (`Pty::spawn_with_readiness`, root's bash), the production Ghostty `Terminal` (80x24) and the lazy output `Ring`. Measured after the shells printed their prompts (38 bytes each). Built from origin/dev dcf9dbb9 as a static musl example in a scratch worktree (never merged): [session_host.rs.txt](https://git.kayg.org/attachments/8ddda284-bacf-4036-a385-5773493982c1) | N sessions in one process | per-session PSS growth | per-session anonymous growth | |---:|---:|---:| | 100, with VT | 69.9 KiB | 59.6 KiB | | 500, with VT | 61.2 KiB | 59.1 KiB | | 100, no VT (PTY + struct + ring only) | 2.1 KiB | 0.76 KiB | | 500, no VT | 0.90 KiB | 0.63 KiB | So in a shared process the per-session userspace floor is ~0.6–0.9 KiB **without** terminal state, and ~59 KiB with an empty 80x24 Ghostty terminal (primary + alternate screen page lists). Add the kernel's ~28 KiB per PTY (finding 1). An empty session therefore costs at least ~29 KiB (no VT in userspace) or ~88 KiB (with VT) in any architecture; ~1 KB is reachable only for the userspace bookkeeping part, not for a terminal as a whole.
kayg commented 2026-10-13 12:56:35 +00:00
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Finding 3 (baseline reproduced on the perf VM, idle load 0.7–0.8, under the lock). Binary: origin/dev dcf9dbb9, production recipe (static x86_64 musl, pinned Zig 0.15.2, --release), 22,612,848 bytes, sha256 f10478638a45aeea…. Empty shims started as infraternal __shim --uid 0 --cols 80 --rows 24 (root bash prompt, 38 bytes of output), single-threaded.

Per shim (KiB), N=100 from the same image:

class Rss Pss Anonymous what it is
image RELRO + .data (rw-p, relocated) 948 948 948 static-PIE start-up applies 50,433 RELR relocations that touch 237 pages (888 KiB /GOT + 60 KiB ). Every page is copied on write, per process. musl's static-PIE start leaves it rw-p (no RELRO mprotect).
image text + rodata (file) 4,892 48 0 shared between shims of the same image (Pss 367 at N=10, 36 at N=100). Unshared it is ~0.85–4.9 MiB per shim, which is what production shows when each shim is from a different deploy's (deleted) inode.
malloc heap (mallocng groups, small mmaps) ~80 ~80 ~80 Ghostty terminal structs, ring, frames, CLI leftovers
Ghostty page memory (page_allocator, primary + alternate screen) ~48 ~48 ~48 two 1.5 MiB reservations, 48 KiB touched
stack 44 44 44 start-up + two 16 KiB read buffers
bss + [heap] 13 13 13
total 6,028 1,180 1,132 N=10: Pss 1,617; N=1: Pss 6,016

Kernel per session (shim + shell + PTY), from /proc/meminfo deltas at N=100: PageTables 125 KiB, KernelStack 31 KiB, Slab 26 KiB; PTY ~28 KiB (finding 1). The shell itself: Pss 2,353 KiB (not counted above).

Latency baseline (N=10): connect→Hello p50 0.091 / p99 0.216 ms; SnapshotRequest→Snapshot p50 0.059 / p99 0.193 ms; Input→echoed Output (bash) p50 0.263 / p99 0.430 ms (400 samples).

Conclusion: 80% of an empty shim's private memory (948 of ~1,180 KiB) is the relocated static-PIE image, not session state. Production's 956 kB Anonymous matches this almost exactly. Next: measure non-PIE static and a fork-from-parent (zygote) launch, each as an ablation.

Harness and raw output: shimmem.py.txt baseline-perfvm.json.txt

Finding 3 (baseline reproduced on the perf VM, idle load 0.7–0.8, under the lock). Binary: origin/dev dcf9dbb9, production recipe (static x86_64 musl, pinned Zig 0.15.2, `--release`), 22,612,848 bytes, sha256 f10478638a45aeea…. Empty shims started as `infraternal __shim --uid 0 --cols 80 --rows 24` (root bash prompt, 38 bytes of output), single-threaded. Per shim (KiB), N=100 from the same image: | class | Rss | Pss | Anonymous | what it is | |---|---:|---:|---:|---| | image RELRO + .data (rw-p, relocated) | 948 | 948 | 948 | static-PIE start-up applies 50,433 RELR relocations that touch 237 pages (888 KiB /GOT + 60 KiB ). Every page is copied on write, per process. musl's static-PIE start leaves it rw-p (no RELRO mprotect). | | image text + rodata (file) | 4,892 | 48 | 0 | shared between shims of the same image (Pss 367 at N=10, 36 at N=100). Unshared it is ~0.85–4.9 MiB per shim, which is what production shows when each shim is from a different deploy's (deleted) inode. | | malloc heap (mallocng groups, small mmaps) | ~80 | ~80 | ~80 | Ghostty terminal structs, ring, frames, CLI leftovers | | Ghostty page memory (page_allocator, primary + alternate screen) | ~48 | ~48 | ~48 | two 1.5 MiB reservations, 48 KiB touched | | stack | 44 | 44 | 44 | start-up + two 16 KiB read buffers | | bss + [heap] | 13 | 13 | 13 | | | **total** | 6,028 | **1,180** | **1,132** | N=10: Pss 1,617; N=1: Pss 6,016 | Kernel per session (shim + shell + PTY), from /proc/meminfo deltas at N=100: PageTables 125 KiB, KernelStack 31 KiB, Slab 26 KiB; PTY ~28 KiB (finding 1). The shell itself: Pss 2,353 KiB (not counted above). Latency baseline (N=10): connect→Hello p50 0.091 / p99 0.216 ms; SnapshotRequest→Snapshot p50 0.059 / p99 0.193 ms; Input→echoed Output (bash) p50 0.263 / p99 0.430 ms (400 samples). **Conclusion:** 80% of an empty shim's private memory (948 of ~1,180 KiB) is the relocated static-PIE image, not session state. Production's 956 kB Anonymous matches this almost exactly. Next: measure non-PIE static and a fork-from-parent (zygote) launch, each as an ablation. Harness and raw output: [shimmem.py.txt](https://git.kayg.org/attachments/0727b04e-23cc-4c54-91a9-0588d4f1767c) [baseline-perfvm.json.txt](https://git.kayg.org/attachments/4465858d-c618-4307-bedb-17c0b38398eb)
kayg commented 2026-10-13 12:56:40 +00:00
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Correction to finding 3, first row (shell quoting ate two words): "888 KiB of .data.rel.ro/GOT + 60 KiB of .data".

Correction to finding 3, first row (shell quoting ate two words): "888 KiB of .data.rel.ro/GOT + 60 KiB of .data".
kayg commented 2026-10-13 13:23:59 +00:00
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Finding 4 (ablations, perf VM, load 0.0–0.2, under the lock, N=100 empty shims each). One experimental static build (origin/dev dcf9dbb9 + measurement-only switches in a scratch worktree, never merged; 22,615,344 bytes):

variant Pss per shim Anonymous (private) saved vs plain notes
plain (same as production) 1,172.6 KiB 1,124.6 —
early dispatch: __shim parsed before the CLI registry and clap tree are built 1,108.3 KiB 1,072.3 64 KiB heap −52 KiB (registry/clap leftovers mallocng keeps), ~1.2 MiB less text touched (shared)
fork from one already-relocated parent (zygote), no exec 176 KiB 136 private dirty 997 KiB (85%) relocated image pages stay copy-on-write shared: image data Pss 944 → 20 KiB. The parent costs 443 KiB once per binary version.

Latency, zygote vs baseline (N=100 vs N=10 baseline): connect→Hello p50 0.077 / p99 0.166 ms (baseline 0.091 / 0.216); Snapshot p50 0.055 / p99 0.128 ms (0.059 / 0.193); echo p50 0.262 / p99 0.423 ms (0.263 / 0.430). No regression.

The zygote result shows what one process per session costs once the image relocation is not paid per process: ~176 KiB Pss, of which ~76 KiB heap+VT, 44 KiB stack, 8 KiB bss, ~30 KiB shared text share. Both are prototypes only; neither is decision-free (see options, coming).

Raw output and the experiment diff:
experiments-perfvm.json.txt experiments.diff.txt

Finding 4 (ablations, perf VM, load 0.0–0.2, under the lock, N=100 empty shims each). One experimental static build (origin/dev dcf9dbb9 + measurement-only switches in a scratch worktree, never merged; 22,615,344 bytes): | variant | Pss per shim | Anonymous (private) | saved vs plain | notes | |---|---:|---:|---:|---| | plain (same as production) | 1,172.6 KiB | 1,124.6 | — | | | early dispatch: `__shim` parsed before the CLI registry and clap tree are built | 1,108.3 KiB | 1,072.3 | **64 KiB** | heap −52 KiB (registry/clap leftovers mallocng keeps), ~1.2 MiB less text touched (shared) | | fork from one already-relocated parent (zygote), no exec | **176 KiB** | 136 private dirty | **997 KiB (85%)** | relocated image pages stay copy-on-write shared: image data Pss 944 → 20 KiB. The parent costs 443 KiB once per binary version. | Latency, zygote vs baseline (N=100 vs N=10 baseline): connect→Hello p50 0.077 / p99 0.166 ms (baseline 0.091 / 0.216); Snapshot p50 0.055 / p99 0.128 ms (0.059 / 0.193); echo p50 0.262 / p99 0.423 ms (0.263 / 0.430). No regression. The zygote result shows what one process per session costs once the image relocation is not paid per process: ~176 KiB Pss, of which ~76 KiB heap+VT, 44 KiB stack, 8 KiB bss, ~30 KiB shared text share. Both are prototypes only; neither is decision-free (see options, coming). Raw output and the experiment diff: [experiments-perfvm.json.txt](https://git.kayg.org/attachments/365edb8f-f59f-428a-8106-3911fa45a54d) [experiments.diff.txt](https://git.kayg.org/attachments/e96a4b0d-e069-47d9-8545-e8eb14579677)
kayg commented 2026-10-13 13:26:07 +00:00
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Finding 5 (non-PIE static ablation, perf VM, load 0.04–0.2, under the lock). Same source (origin/dev dcf9dbb9), same recipe, plus CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_RUSTFLAGS="-C target-feature=+crt-static -C relocation-model=static": ELF type EXEC (not DYN), no .relr.dyn, 22,574,656 bytes (−38,192 bytes vs PIE). The gate's static check accepts it ("statically linked").

N variant Pss/shim Anonymous/shim image data Pss notes
100 PIE (production) 1,176.2 KiB 1,128.2 948 re-run in the same window
100 non-PIE 254.5 KiB 200.5 17 −922 KiB per shim (−78%)
10 non-PIE 746.8 200.8 30 text/rodata share is larger at small N
1 non-PIE 5,664 204 170 alone on its image: 5.3 MiB of clean file pages counted as private (reclaimable page cache, not anonymous)

Latency, same window: echo p50/p99 0.290/0.421 ms (PIE 0.283/0.401); connect→Hello p50 0.066 ms (0.063); Snapshot p50 0.053 ms (0.043). No measurable change.

Security cost, plainly: non-PIE places the whole image (text, GOT, .data, .bss) at a fixed address in every mode of the one binary (server, infraternal agent, shim, relay), because D7 makes them one file. Stack, heap (brk), mmap regions and the vDSO stay randomized. An attacker with a memory-corruption bug in the network-facing server or infraternal agent gets ROP gadgets and writable globals at known addresses without an information leak first. D244 is not weakened directly: OpenSSL's secure heap is still an mlocked, dump-excluded mmap at a random address, but the global that points to it would be at a fixed address. This is a security trade for the owner, not a job decision.

Raw output:
nopie-perfvm.json.txt

Finding 5 (non-PIE static ablation, perf VM, load 0.04–0.2, under the lock). Same source (origin/dev dcf9dbb9), same recipe, plus `CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_RUSTFLAGS="-C target-feature=+crt-static -C relocation-model=static"`: ELF type EXEC (not DYN), no `.relr.dyn`, 22,574,656 bytes (−38,192 bytes vs PIE). The gate's static check accepts it ("statically linked"). | N | variant | Pss/shim | Anonymous/shim | image data Pss | notes | |---:|---|---:|---:|---:|---| | 100 | PIE (production) | 1,176.2 KiB | 1,128.2 | 948 | re-run in the same window | | 100 | non-PIE | **254.5 KiB** | **200.5** | 17 | **−922 KiB per shim (−78%)** | | 10 | non-PIE | 746.8 | 200.8 | 30 | text/rodata share is larger at small N | | 1 | non-PIE | 5,664 | 204 | 170 | alone on its image: 5.3 MiB of clean file pages counted as private (reclaimable page cache, not anonymous) | Latency, same window: echo p50/p99 0.290/0.421 ms (PIE 0.283/0.401); connect→Hello p50 0.066 ms (0.063); Snapshot p50 0.053 ms (0.043). No measurable change. Security cost, plainly: non-PIE places the whole image (text, GOT, .data, .bss) at a fixed address in **every** mode of the one binary (server, infraternal agent, shim, relay), because D7 makes them one file. Stack, heap (brk), mmap regions and the vDSO stay randomized. An attacker with a memory-corruption bug in the network-facing server or infraternal agent gets ROP gadgets and writable globals at known addresses without an information leak first. D244 is not weakened directly: OpenSSL's secure heap is still an mlocked, dump-excluded mmap at a random address, but the global that points to it would be at a fixed address. This is a security trade for the owner, not a job decision. Raw output: [nopie-perfvm.json.txt](https://git.kayg.org/attachments/8c4617c0-3c1a-4f93-a642-afc53496050c)
kayg commented 2026-10-13 16:48:52 +00:00
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Continuation start: branch shim-memory, base origin/dev dcf9dbb94b; current checkpoint 272ffd64db. The issue has no parent. Reviewing the checkpoint and continuing the memory measurements/reductions; no deployment.

Continuation start: branch shim-memory, base origin/dev dcf9dbb94b52d5d2e805a0474e74dd42764159fe; current checkpoint 272ffd64dbb60550d3b0c6f5b441f0a51ba646a1. The issue has no parent. Reviewing the checkpoint and continuing the memory measurements/reductions; no deployment.
kayg commented 2026-10-13 17:21:22 +00:00
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Finding 6 (checkpoint memory release, exact checkpoint build on infraternal-perf-test, kernel 6.12.111, perf lock held; load average 2.91→2.27). Production static PIE, baseline SHA f1047863…, candidate SHA d14d372c…:

N baseline PSS KiB candidate PSS KiB saved KiB/shim anonymous saved KiB/shim
1 6024.0 5976.0 48.0 48.0
10 1623.4 1572.6 50.8 50.8
100 1180.7 1131.8 48.9 48.9

The 948 KiB per-shim relocated image-data mapping is unchanged. At N=100, image text and rodata PSS are 48 KiB combined per shim; the candidate's touched anonymous mappings are 79.9 KiB, stack 43.8 KiB, bss 8.1 KiB, and brk heap 4 KiB. Shell PSS is excluded.

N=10 attach/echo p99s are mixed in this run (baseline→candidate: Hello 1.068→0.722 ms, Snapshot 0.256→0.462 ms, echo 0.602→2.147 ms), with p50s 0.115→0.103, 0.073→0.067, and 0.178→0.236 ms. I am repeating latency under the perf lock before claiming no regression. Raw matrix, safe measurement harness.

Finding 6 (checkpoint memory release, exact checkpoint build on infraternal-perf-test, kernel 6.12.111, perf lock held; load average 2.91→2.27). Production static PIE, baseline SHA f1047863…, candidate SHA d14d372c…: | N | baseline PSS KiB | candidate PSS KiB | saved KiB/shim | anonymous saved KiB/shim | |---:|---:|---:|---:|---:| | 1 | 6024.0 | 5976.0 | 48.0 | 48.0 | | 10 | 1623.4 | 1572.6 | 50.8 | 50.8 | | 100 | 1180.7 | 1131.8 | 48.9 | 48.9 | The 948 KiB per-shim relocated image-data mapping is unchanged. At N=100, image text and rodata PSS are 48 KiB combined per shim; the candidate's touched anonymous mappings are 79.9 KiB, stack 43.8 KiB, bss 8.1 KiB, and brk heap 4 KiB. Shell PSS is excluded. N=10 attach/echo p99s are mixed in this run (baseline→candidate: Hello 1.068→0.722 ms, Snapshot 0.256→0.462 ms, echo 0.602→2.147 ms), with p50s 0.115→0.103, 0.073→0.067, and 0.178→0.236 ms. I am repeating latency under the perf lock before claiming no regression. [Raw matrix](https://git.kayg.org/attachments/ba8d5b3d-6937-4c8f-8c8a-f19f1edb96d4), [safe measurement harness](https://git.kayg.org/attachments/79c4e0ee-4b23-48e0-8f43-4a5de4ba467b).
kayg commented 2026-10-13 17:27:23 +00:00
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Finding 7 (latency repeat, perf VM under the shared lock, N=10, root bash; load averages 0.33–0.43 / 1.07–1.20 / 1.22–1.26). A/B/B/A order, 5,000 connect+snapshot samples and 10,000 echo samples per run:

Run pair Hello p99 ms, base→candidate Snapshot p99 ms, base→candidate Echo p99 ms, base→candidate
A 0.538→0.486 0.293→0.240 2.038→0.818
B 0.438→0.261 0.247→0.185 0.980→1.016
Mean of run p99s 0.488→0.374 0.270→0.213 1.509→0.917

Echo p50 mean was 0.246 ms baseline and 0.221 ms candidate. One echo p99 pair is 0.036 ms higher on the candidate; across the two repeats attach, snapshot and echo p99 do not regress. Raw latency runs.

Finding 7 (latency repeat, perf VM under the shared lock, N=10, root bash; load averages 0.33–0.43 / 1.07–1.20 / 1.22–1.26). A/B/B/A order, 5,000 connect+snapshot samples and 10,000 echo samples per run: | Run pair | Hello p99 ms, base→candidate | Snapshot p99 ms, base→candidate | Echo p99 ms, base→candidate | |---|---:|---:|---:| | A | 0.538→0.486 | 0.293→0.240 | 2.038→0.818 | | B | 0.438→0.261 | 0.247→0.185 | 0.980→1.016 | | Mean of run p99s | 0.488→0.374 | 0.270→0.213 | 1.509→0.917 | Echo p50 mean was 0.246 ms baseline and 0.221 ms candidate. One echo p99 pair is 0.036 ms higher on the candidate; across the two repeats attach, snapshot and echo p99 do not regress. [Raw latency runs](https://git.kayg.org/attachments/17c53bee-84f2-4aad-8753-6f6e42e64937).
kayg commented 2026-10-13 17:54:22 +00:00
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Finding 8 (targeted default-feature tests, build host): 74 passed, 2 failed, 1 ignored in 34.23 s. The failures are unrelated restart timing tests: cold_exec_with_closed_stdin_keeps_the_image_pinned_and_maps_null was killed after its native stdin probe compiler exceeded 135.426738 ms; restart_request_logs_kernel_peer_target_and_cold_outcome exceeded 6 s. Raw output: test-infraternal-default.log. Rerunning the binary tests serially; no restart code is changed by #205.

Finding 8 (targeted default-feature tests, build host): 74 passed, 2 failed, 1 ignored in 34.23 s. The failures are unrelated restart timing tests: `cold_exec_with_closed_stdin_keeps_the_image_pinned_and_maps_null` was killed after its native stdin probe compiler exceeded 135.426738 ms; `restart_request_logs_kernel_peer_target_and_cold_outcome` exceeded 6 s. Raw output: [test-infraternal-default.log](https://git.kayg.org/attachments/900e82cc-cb1e-43c0-b622-5e71b15dd776). Rerunning the binary tests serially; no restart code is changed by #205.
kayg commented 2026-10-13 17:55:54 +00:00
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Finding 8 resolution (HEAD 272ffd64, code unchanged): the serial default-feature binary run passed 76/0/1 (passed/failed/ignored) in 38.35 s; no-default features passed 25/0/0 in 0.14 s. Touched-crate Clippy passed in 18m42s with no warnings. Logs: Clippy, default tests, no-default tests.

Finding 8 resolution (HEAD 272ffd64, code unchanged): the serial default-feature binary run passed 76/0/1 (passed/failed/ignored) in 38.35 s; no-default features passed 25/0/0 in 0.14 s. Touched-crate Clippy passed in 18m42s with no warnings. Logs: [Clippy](https://git.kayg.org/attachments/28e975a1-877d-4e77-9361-9415f200ea96), [default tests](https://git.kayg.org/attachments/53aed8c0-8adc-4ebb-bfec-9b01c97f7abe), [no-default tests](https://git.kayg.org/attachments/65eca29b-627c-4ad0-8870-111756eb28b3).
kayg commented 2026-10-13 18:27:20 +00:00
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Finding 9 — full-gate size limits are stale on this branch. scripts/verify fast passed fmt, VT fmt, CLI compile-out, clippy, tests and cargo-deny; only static builds failed. The branch limits are 16,404,816 bytes (x86_64) and 13,817,816 bytes (aarch64), versus measured production artifacts of 22,612,784 and 20,012,344 bytes. The exact-size cap on current origin/dev has moved since base dcf9dbb9; this branch is 10 commits behind and its verifier still uses the historical limits. Full gate log: verify-fast.log. I’m rebasing the reviewed shim change onto current origin/dev, then I’ll rerun the full gate against the current production cap.

Finding 9 — full-gate size limits are stale on this branch. `scripts/verify fast` passed fmt, VT fmt, CLI compile-out, clippy, tests and cargo-deny; only static builds failed. The branch limits are 16,404,816 bytes (x86_64) and 13,817,816 bytes (aarch64), versus measured production artifacts of 22,612,784 and 20,012,344 bytes. The exact-size cap on current `origin/dev` has moved since base `dcf9dbb9`; this branch is 10 commits behind and its verifier still uses the historical limits. Full gate log: [verify-fast.log](https://git.kayg.org/attachments/d8b21230-374f-4aa1-8789-9c956909530b). I’m rebasing the reviewed shim change onto current `origin/dev`, then I’ll rerun the full gate against the current production cap.
kayg commented 2026-10-13 18:28:28 +00:00
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Rebased the reviewed shim change onto current origin/dev at 1f637cbb; branch head is now e24cb5a9ecb38f4ae8dd0350eca30198ff0663aa. The one-file change and measurements are unchanged: 48.0 / 50.8 / 48.9 KiB lower PSS at N=1/10/100, with the earlier repeated A/B/B/A sample showing no aggregate attach/echo p99 regression. The rebase brings in D243’s exact static caps (22,204,304 x86_64; 19,638,744 aarch64), resolving the stale-limit mismatch recorded above. I’m rerunning scripts/verify fast on this head.

Rebased the reviewed shim change onto current `origin/dev` at 1f637cbb; branch head is now e24cb5a9ecb38f4ae8dd0350eca30198ff0663aa. The one-file change and measurements are unchanged: 48.0 / 50.8 / 48.9 KiB lower PSS at N=1/10/100, with the earlier repeated A/B/B/A sample showing no aggregate attach/echo p99 regression. The rebase brings in D243’s exact static caps (22,204,304 x86_64; 19,638,744 aarch64), resolving the stale-limit mismatch recorded above. I’m rerunning `scripts/verify fast` on this head.
kayg commented 2026-10-13 18:45:46 +00:00
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Finding 10 — current-base full gate had one unrelated workspace test fail in infraternal-agent: component_down_proves_tcp_fallback_when_enrolled_udp_is_unavailable returned Disconnected where the assertion expected Fallback (crates/infraternal-agent/src/remote_server_path_tests.rs:657). The suite reported 95 passed, 1 failed, 14 ignored. This code is outside the shim change; I’ll rerun the focused test after the full gate completes to check whether the result reproduces.

Finding 10 — current-base full gate had one unrelated workspace test fail in `infraternal-agent`: `component_down_proves_tcp_fallback_when_enrolled_udp_is_unavailable` returned `Disconnected` where the assertion expected `Fallback` (`crates/infraternal-agent/src/remote_server_path_tests.rs:657`). The suite reported 95 passed, 1 failed, 14 ignored. This code is outside the shim change; I’ll rerun the focused test after the full gate completes to check whether the result reproduces.
kayg commented 2026-10-13 19:04:34 +00:00
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Finding 11 — after rebasing onto current origin/dev, the full gate has two unresolved rows. The workspace test suite failed only infraternal-agent::remote_client::server_path::tests::component_down_proves_tcp_fallback_when_enrolled_udp_is_unavailable (expected Fallback, got Disconnected; 95 passed, 1 failed, 14 ignored). D243 exact static caps also fail: x86_64 22,236,208 / 22,204,304 bytes (+31,904); aarch64 19,664,376 / 19,638,744 (+25,632). The static-size boundary test rejects the x86 artifact. I will not raise the caps; I’m checking a smaller implementation and will rerun the focused networking test.

Gate summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | FAIL (101)   |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Full log: verify-fast-head.log.

Finding 11 — after rebasing onto current `origin/dev`, the full gate has two unresolved rows. The workspace test suite failed only `infraternal-agent::remote_client::server_path::tests::component_down_proves_tcp_fallback_when_enrolled_udp_is_unavailable` (expected `Fallback`, got `Disconnected`; 95 passed, 1 failed, 14 ignored). D243 exact static caps also fail: x86_64 22,236,208 / 22,204,304 bytes (+31,904); aarch64 19,664,376 / 19,638,744 (+25,632). The static-size boundary test rejects the x86 artifact. I will not raise the caps; I’m checking a smaller implementation and will rerun the focused networking test. Gate summary: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | FAIL (101) | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` Full log: [verify-fast-head.log](https://git.kayg.org/attachments/f6633c70-7f50-48a1-ad4c-0873fda2daf4).
kayg commented 2026-10-13 19:10:11 +00:00
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Finding 11 follow-up — the previously failing remote fallback test passes isolated with its required remote feature: 1 passed, 0 failed, 0.79 s. This confirms the gate failure was intermittent in the shared workspace run; full-gate rerun remains required. Receipt: test-fallback-retry.log.

Finding 11 follow-up — the previously failing remote fallback test passes isolated with its required `remote` feature: 1 passed, 0 failed, 0.79 s. This confirms the gate failure was intermittent in the shared workspace run; full-gate rerun remains required. Receipt: [test-fallback-retry.log](https://git.kayg.org/attachments/65061e12-040b-47a0-9998-d5c56c6c962d).
kayg commented 2026-10-13 19:12:06 +00:00
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The owner line advanced during the long full gate (from 1f637cbb to 804ac0e8, including D204 gate iteration and restart-test fixes). I rebased the one-file shim commit again; head is caedaacc0c848aade80758a93cf7e2d1be36e835 directly on 804ac0e8. I’ll use the new scripts/verify iterate for source iterations and keep the D243 caps unchanged. The isolated fallback test passed 1/1; the measured static growth remains to resolve.

The owner line advanced during the long full gate (from 1f637cbb to 804ac0e8, including D204 gate iteration and restart-test fixes). I rebased the one-file shim commit again; head is caedaacc0c848aade80758a93cf7e2d1be36e835 directly on 804ac0e8. I’ll use the new `scripts/verify iterate` for source iterations and keep the D243 caps unchanged. The isolated fallback test passed 1/1; the measured static growth remains to resolve.
kayg commented 2026-10-13 19:29:33 +00:00
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Finding 12 — size attribution against current origin/dev confirms this shim change does not grow the production artifact. Under the locked x86_64 static recipe and rustc 1.99.0, current base measures 22,236,272 bytes; the shim head measures 22,236,208 bytes (−64 bytes, including a 72-byte text decrease). Both exceed the unchanged D243 cap 22,204,304: base +31,968 bytes, head +31,904 bytes. I will not raise the cap. The cap mismatch therefore already exists on current origin/dev; the candidate reduces its distance by 64 bytes. Raw receipt with SHA-256 and section sizes: static-size-attribution.txt.

Finding 12 — size attribution against current `origin/dev` confirms this shim change does not grow the production artifact. Under the locked x86_64 static recipe and rustc 1.99.0, current base measures 22,236,272 bytes; the shim head measures 22,236,208 bytes (−64 bytes, including a 72-byte text decrease). Both exceed the unchanged D243 cap 22,204,304: base +31,968 bytes, head +31,904 bytes. I will not raise the cap. The cap mismatch therefore already exists on current `origin/dev`; the candidate reduces its distance by 64 bytes. Raw receipt with SHA-256 and section sizes: [static-size-attribution.txt](https://git.kayg.org/attachments/bd4b9095-d722-457c-ad38-dd663a6fb8fc).
kayg commented 2026-10-13 19:38:21 +00:00
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Finding 13 — the latest serial scripts/verify iterate run on caedaacc failed the same fallback test and the 700 ms healthy-mesh probe test (94 passed, 2 failed, 14 ignored). Each exact test passes alone with the remote feature: fallback 1/1 in 0.57 s; mesh probe 1/1 in 0.76 s. I’m not waiving the iterate row; I’ll retry the full suite in a quieter host window. Receipts: fallback, mesh probe.

Finding 13 — the latest serial `scripts/verify iterate` run on `caedaacc` failed the same fallback test and the 700 ms healthy-mesh probe test (94 passed, 2 failed, 14 ignored). Each exact test passes alone with the `remote` feature: fallback 1/1 in 0.57 s; mesh probe 1/1 in 0.76 s. I’m not waiving the iterate row; I’ll retry the full suite in a quieter host window. Receipts: [fallback](https://git.kayg.org/attachments/b9abd9d4-abab-4bfc-b888-ad12aa35a41e), [mesh probe](https://git.kayg.org/attachments/f06b0118-ad16-49da-890e-f155e291a9bd).
kayg commented 2026-10-13 19:46:02 +00:00
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Finding 14 — remeasured current production artifacts on infraternal-perf-test under the perf lock and weighted scope at N=1/10/100. Against current origin/dev (SHA 632fab…; 22,236,272-byte binary), the shim head (SHA 7f6e1a…; 22,236,208-byte binary) saves 52.0 / 47.6 / 47.8 KiB PSS per shim:

N Base PSS Shim head PSS Saved
1 5,784.0 KiB 5,732.0 KiB 52.0 KiB
10 1,556.6 KiB 1,509.0 KiB 47.6 KiB
100 1,134.2 KiB 1,086.4 KiB 47.8 KiB

At N=100, image data stays 904 KiB private dirty, shared text/rodata PSS is 34/12 KiB, stack 44.2/44.4 KiB, heap 4 KiB, and anonymous mappings fall 127.6→79.9 KiB. The N=10 200-sample smoke showed noisier candidate p99s (Hello 1.046 vs 0.343 ms, snapshot 0.395 vs 0.158 ms, echo 0.998 vs 0.666 ms); I’m treating those as inconclusive and running the 5,000-sample A/B/B/A latency pass next. Load averages per row are in the raw receipts. Clean JSON matrix, raw matrix output.

Finding 14 — remeasured current production artifacts on `infraternal-perf-test` under the perf lock and weighted scope at N=1/10/100. Against current `origin/dev` (SHA 632fab…; 22,236,272-byte binary), the shim head (SHA 7f6e1a…; 22,236,208-byte binary) saves 52.0 / 47.6 / 47.8 KiB PSS per shim: | N | Base PSS | Shim head PSS | Saved | |---:|---:|---:|---:| | 1 | 5,784.0 KiB | 5,732.0 KiB | 52.0 KiB | | 10 | 1,556.6 KiB | 1,509.0 KiB | 47.6 KiB | | 100 | 1,134.2 KiB | 1,086.4 KiB | 47.8 KiB | At N=100, image data stays 904 KiB private dirty, shared text/rodata PSS is 34/12 KiB, stack 44.2/44.4 KiB, heap 4 KiB, and anonymous mappings fall 127.6→79.9 KiB. The N=10 200-sample smoke showed noisier candidate p99s (Hello 1.046 vs 0.343 ms, snapshot 0.395 vs 0.158 ms, echo 0.998 vs 0.666 ms); I’m treating those as inconclusive and running the 5,000-sample A/B/B/A latency pass next. Load averages per row are in the raw receipts. [Clean JSON matrix](https://git.kayg.org/attachments/b76c30e1-f0f6-47b8-810b-3cb304a97f5f), [raw matrix output](https://git.kayg.org/attachments/aa54f356-7e80-4bdc-a708-c1b27c65cfb7).
kayg commented 2026-10-13 19:47:45 +00:00
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Finding 15 — the first current-base latency A/B/B/A run used 5,000 connect/snapshot samples and 10,000 echo samples per binary at N=10. Mean of per-run p50s (base→head): Hello 0.096→0.105 ms, snapshot 0.066→0.068 ms, echo 0.228→0.246 ms. Mean per-run p99s: Hello 0.259→0.346 ms, snapshot 0.190→0.213 ms, echo 0.943→0.979 ms. The tail samples varied strongly within the A/B/B/A order (head echo p99 1.464 then 0.494 ms), so this run does not establish a material regression or a clean no-regression result. I’ll repeat the locked A/B/B/A sample. Receipts: JSON, raw output.

Finding 15 — the first current-base latency A/B/B/A run used 5,000 connect/snapshot samples and 10,000 echo samples per binary at N=10. Mean of per-run p50s (base→head): Hello 0.096→0.105 ms, snapshot 0.066→0.068 ms, echo 0.228→0.246 ms. Mean per-run p99s: Hello 0.259→0.346 ms, snapshot 0.190→0.213 ms, echo 0.943→0.979 ms. The tail samples varied strongly within the A/B/B/A order (head echo p99 1.464 then 0.494 ms), so this run does not establish a material regression or a clean no-regression result. I’ll repeat the locked A/B/B/A sample. Receipts: [JSON](https://git.kayg.org/attachments/146edbbd-16d5-42eb-b85b-0844cc1fe3ed), [raw output](https://git.kayg.org/attachments/2cea5e06-8fe8-43da-9fb9-460a76286065).
kayg commented 2026-10-13 19:50:32 +00:00
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Finding 16 — the second locked 5,000/10,000-sample A/B/B/A latency pass again shows small candidate-side median increases and unstable tails. Combining both passes (mean of four per-run p50/p99 values, N=10): Hello p50 0.100→0.119 ms, p99 0.320→0.429 ms; snapshot p50 0.067→0.076 ms, p99 0.216→0.279 ms; echo p50 0.237→0.267 ms, p99 0.953→1.225 ms. Load averages and individual order effects are in the receipts. Since echo p50 was higher in all four candidate runs, I’m not claiming no latency regression; I’ll repeat once more to decide whether this source change is acceptable. Receipts: JSON, raw output.

Finding 16 — the second locked 5,000/10,000-sample A/B/B/A latency pass again shows small candidate-side median increases and unstable tails. Combining both passes (mean of four per-run p50/p99 values, N=10): Hello p50 0.100→0.119 ms, p99 0.320→0.429 ms; snapshot p50 0.067→0.076 ms, p99 0.216→0.279 ms; echo p50 0.237→0.267 ms, p99 0.953→1.225 ms. Load averages and individual order effects are in the receipts. Since echo p50 was higher in all four candidate runs, I’m not claiming no latency regression; I’ll repeat once more to decide whether this source change is acceptable. Receipts: [JSON](https://git.kayg.org/attachments/2a61e9df-4fd7-481f-b8a6-8e9aa5ea377b), [raw output](https://git.kayg.org/attachments/969626ee-dd9b-41d5-bfde-0ffa07858c3e).
kayg commented 2026-10-13 19:54:45 +00:00
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Finding 17 — reverse-order B/A/A/B at N=10 completed under the lock but the perf VM load was elevated (1-minute averages 4.16→2.40). Hello and snapshot p50s favored the shim head; echo p50 averaged 0.282 ms for head versus 0.265 ms for base (+17 µs), while echo p99 averaged 1.278 versus 1.634 ms. This pass is too loaded to settle the small median difference. I’ll make one final latency run when the perf VM is quieter. Receipts: JSON, raw output.

Finding 17 — reverse-order B/A/A/B at N=10 completed under the lock but the perf VM load was elevated (1-minute averages 4.16→2.40). Hello and snapshot p50s favored the shim head; echo p50 averaged 0.282 ms for head versus 0.265 ms for base (+17 µs), while echo p99 averaged 1.278 versus 1.634 ms. This pass is too loaded to settle the small median difference. I’ll make one final latency run when the perf VM is quieter. Receipts: [JSON](https://git.kayg.org/attachments/de3c5828-64cc-47fd-9918-d14b843a9407), [raw output](https://git.kayg.org/attachments/c3bbed9f-d7d5-44c6-b42a-c4948b042d48).
kayg commented 2026-10-13 19:55:11 +00:00
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Finding 18 — measured floor options for the owner; no architecture choice made.

Shape Userspace per session PTY kernel floor What remains
One process per session, current D13 1,086.4 KiB shim PSS at N=100 after this change about 28 KiB 904 KiB relocated image data, ~44 KiB stack, 80 KiB anon maps (including ~48 KiB VT pages), heap/BSS, and ~46 KiB shared image text/rodata PSS
One process per user, with VT 61.2 KiB PSS (59.1 KiB anonymous) in the N=500 floor prototype about 28 KiB ~89 KiB total/session; VT page state dominates userspace
One process per user, without VT 0.90 KiB PSS (0.63 KiB anonymous) at N=500 about 28 KiB ~29 KiB total/session; this reaches ~1 KiB only for userspace bookkeeping with terminal state excluded
Fork from one relocated parent, one child process per session 176 KiB PSS/child at N=100; parent 443 KiB once per binary about 28 KiB Saves ~997 KiB/child versus exec, but adds a persistent parent and fork-based launch lifecycle

The current session-process cost is dominated by static-PIE relocation pages (904 KiB private dirty per child), then mappings/VT and the resident stack. Sharing a process amortizes image and stack costs but cannot remove the ~59 KiB VT state or ~28 KiB PTY floor. Different deleted executable inodes across deploys also prevent file-backed text/rodata sharing in production. These measurements show that ~1 KiB is reachable only for userspace bookkeeping when terminal state and the PTY are excluded; it is not a realistic total empty-terminal target with the current PTY contract.

Prior floor/ablation receipts: one-process-per-user floor, per-session mapping breakdown, zygote/shared-image ablation.

Finding 18 — measured floor options for the owner; no architecture choice made. | Shape | Userspace per session | PTY kernel floor | What remains | |---|---:|---:|---| | One process per session, current D13 | 1,086.4 KiB shim PSS at N=100 after this change | about 28 KiB | 904 KiB relocated image data, ~44 KiB stack, 80 KiB anon maps (including ~48 KiB VT pages), heap/BSS, and ~46 KiB shared image text/rodata PSS | | One process per user, with VT | 61.2 KiB PSS (59.1 KiB anonymous) in the N=500 floor prototype | about 28 KiB | ~89 KiB total/session; VT page state dominates userspace | | One process per user, without VT | 0.90 KiB PSS (0.63 KiB anonymous) at N=500 | about 28 KiB | ~29 KiB total/session; this reaches ~1 KiB only for userspace bookkeeping with terminal state excluded | | Fork from one relocated parent, one child process per session | 176 KiB PSS/child at N=100; parent 443 KiB once per binary | about 28 KiB | Saves ~997 KiB/child versus exec, but adds a persistent parent and fork-based launch lifecycle | The current session-process cost is dominated by static-PIE relocation pages (904 KiB private dirty per child), then mappings/VT and the resident stack. Sharing a process amortizes image and stack costs but cannot remove the ~59 KiB VT state or ~28 KiB PTY floor. Different deleted executable inodes across deploys also prevent file-backed text/rodata sharing in production. These measurements show that ~1 KiB is reachable only for userspace bookkeeping when terminal state and the PTY are excluded; it is not a realistic total empty-terminal target with the current PTY contract. Prior floor/ablation receipts: [one-process-per-user floor](https://git.kayg.org/attachments/8ddda284-bacf-4036-a385-5773493982c1), [per-session mapping breakdown](https://git.kayg.org/attachments/4465858d-c618-4307-bedb-17c0b38398eb), [zygote/shared-image ablation](https://git.kayg.org/attachments/365edb8f-f59f-428a-8106-3911fa45a54d).
kayg commented 2026-10-13 20:01:53 +00:00
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Finding 19 — fourth locked N=10 latency pass, A/B/B/A, 5,000 connect+snapshot and 10,000 echo samples per binary; perf VM load averages fell 2.61→1.21. Mean echo p50 was 0.240 ms base and 0.274 ms head (+34 µs); mean echo p99 was 0.975→0.865 ms. Hello p50 was 0.119→0.109 ms and snapshot p50 0.078→0.071 ms. Across all four current-base passes, each paired-run average still has a higher head echo p50 (by 17–40 µs), while p99 direction varies substantially. This leaves a small median regression unresolved; I am not claiming no latency regression and will do one quieter, randomized repeat before deciding whether this change can stay. Receipts: JSON, raw output.

Finding 19 — fourth locked N=10 latency pass, A/B/B/A, 5,000 connect+snapshot and 10,000 echo samples per binary; perf VM load averages fell 2.61→1.21. Mean echo p50 was 0.240 ms base and 0.274 ms head (+34 µs); mean echo p99 was 0.975→0.865 ms. Hello p50 was 0.119→0.109 ms and snapshot p50 0.078→0.071 ms. Across all four current-base passes, each paired-run average still has a higher head echo p50 (by 17–40 µs), while p99 direction varies substantially. This leaves a small median regression unresolved; I am not claiming no latency regression and will do one quieter, randomized repeat before deciding whether this change can stay. Receipts: [JSON](https://git.kayg.org/attachments/480c47bd-ab2c-48c8-9aab-bbffb3ff87fe), [raw output](https://git.kayg.org/attachments/79b64232-e0f3-425b-8f54-81abcffdf349).
kayg commented 2026-10-13 20:11:15 +00:00
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Finding 20 — measured a control variant that drops ActionRegistry but retains parsed CLI matches, using the same static PIE recipe on the perf VM under the lock. Its binary is 22,236,144 bytes (128 bytes smaller than current origin/dev). PSS saved versus base at N=1/10/100 is 36.0 / 31.3 / 32.6 KiB per shim. At N=100, relocated image data remains 904 KiB; anonymous mmap falls 127.9→95.8 KiB, stack is 44.8→44.2 KiB, heap stays 4 KiB. This variant retains about 15.8 KiB more PSS than the full CLI-state drop at N=100; latency is still pending. Memory receipt: JSON.

Finding 20 — measured a control variant that drops `ActionRegistry` but retains parsed CLI matches, using the same static PIE recipe on the perf VM under the lock. Its binary is 22,236,144 bytes (128 bytes smaller than current `origin/dev`). PSS saved versus base at N=1/10/100 is 36.0 / 31.3 / 32.6 KiB per shim. At N=100, relocated image data remains 904 KiB; anonymous mmap falls 127.9→95.8 KiB, stack is 44.8→44.2 KiB, heap stays 4 KiB. This variant retains about 15.8 KiB more PSS than the full CLI-state drop at N=100; latency is still pending. Memory receipt: [JSON](https://git.kayg.org/attachments/a656ea6a-38e4-45ce-8b3e-cb7ebe443bda).
kayg commented 2026-10-13 20:18:00 +00:00
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Finding 21 — the retained-state variant completed three N=10 latency passes (A/B/B/A, B/A/A/B, A/B/B/A), each with 5,000 connect/snapshot and 10,000 echo samples per binary per run. Across six runs per binary, mean of per-run medians/p99s (base→variant): Hello 0.099/0.472→0.073/0.208 ms; snapshot 0.065/0.298→0.051/0.161 ms; echo 0.260/1.233→0.256/0.607 ms. Load averages ranged 0.36–1.77 (1-minute). The reverse-order pass had one echo p50 pair 54 µs slower on the variant, followed by a pair 12 µs faster; the other two pass means were neutral or faster on the variant. The aggregate shows no attach/echo regression (echo p50 −5 µs), with tails still variable. Receipt: all 12 raw run records.

Finding 21 — the retained-state variant completed three N=10 latency passes (A/B/B/A, B/A/A/B, A/B/B/A), each with 5,000 connect/snapshot and 10,000 echo samples per binary per run. Across six runs per binary, mean of per-run medians/p99s (base→variant): Hello 0.099/0.472→0.073/0.208 ms; snapshot 0.065/0.298→0.051/0.161 ms; echo 0.260/1.233→0.256/0.607 ms. Load averages ranged 0.36–1.77 (1-minute). The reverse-order pass had one echo p50 pair 54 µs slower on the variant, followed by a pair 12 µs faster; the other two pass means were neutral or faster on the variant. The aggregate shows no attach/echo regression (echo p50 −5 µs), with tails still variable. Receipt: [all 12 raw run records](https://git.kayg.org/attachments/a579c406-0deb-4810-a0c0-a03c68ad6eb2).
kayg commented 2026-10-13 20:20:24 +00:00
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Step complete — finalized the measured registry-only release as one atomic commit. HEAD efc30b6898dc7e00148acb14da534d4e6f53f9b5. Production static artifact for this exact source change is 22,236,144 bytes (128 bytes below current origin/dev); PSS savings are 36.0 / 31.3 / 32.6 KiB per shim at N=1/10/100. Touched-crate gates pass: fmt; Clippy; 76 passed, 0 failed, 1 ignored (11.25 s). The full scripts/verify fast milestone run remains next. Receipts: Clippy, tests.

Step complete — finalized the measured registry-only release as one atomic commit. HEAD `efc30b6898dc7e00148acb14da534d4e6f53f9b5`. Production static artifact for this exact source change is 22,236,144 bytes (128 bytes below current origin/dev); PSS savings are 36.0 / 31.3 / 32.6 KiB per shim at N=1/10/100. Touched-crate gates pass: fmt; Clippy; 76 passed, 0 failed, 1 ignored (11.25 s). The full `scripts/verify fast` milestone run remains next. Receipts: [Clippy](https://git.kayg.org/attachments/69e99057-5530-4402-8b70-abb986c8e91e), [tests](https://git.kayg.org/attachments/9191eef2-70f3-4155-99e7-19d92daad097).
kayg commented 2026-10-13 20:31:24 +00:00
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Finding 22 — the branch-head scripts/verify fast workspace suite failed infraternal-agent::remote_client::tests::tcp_proxy_preserves_spacing_between_packets_already_in_flight with tcp_proxy_spacing_us=131318 (95 passed, 1 failed, 14 ignored). This test is outside the shim changes and is not one of the baseline-waiver cases; I will rerun it focused and retry the full suite. Static builds also fail only their existing D243 caps: x86 +31,840 bytes, aarch64 +25,632 bytes. All other Rust gate rows passed. Full log: verify-fast-final.log.

Finding 22 — the branch-head `scripts/verify fast` workspace suite failed `infraternal-agent::remote_client::tests::tcp_proxy_preserves_spacing_between_packets_already_in_flight` with `tcp_proxy_spacing_us=131318` (95 passed, 1 failed, 14 ignored). This test is outside the shim changes and is not one of the baseline-waiver cases; I will rerun it focused and retry the full suite. Static builds also fail only their existing D243 caps: x86 +31,840 bytes, aarch64 +25,632 bytes. All other Rust gate rows passed. Full log: [verify-fast-final.log](https://git.kayg.org/attachments/7fa13bb6-c683-41ec-8772-01c7e15efe01).
kayg commented 2026-10-13 20:31:55 +00:00
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Finding 22 follow-up — the exact relay spacing test passes alone with remote: 1 passed, 0 failed, tcp_proxy_spacing_us=22321. This does not waive the workspace test row; a full rerun remains required. Receipt: focused test log.

Finding 22 follow-up — the exact relay spacing test passes alone with `remote`: 1 passed, 0 failed, `tcp_proxy_spacing_us=22321`. This does not waive the workspace test row; a full rerun remains required. Receipt: [focused test log](https://git.kayg.org/attachments/f6c6dae7-7ecf-4001-8044-8470602e40cb).
kayg commented 2026-10-13 20:46:56 +00:00
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Continuation start: branch shim-memory, based on origin/dev 804ac0e854; current head efc30b6898dc7e00148acb14da534d4e6f53f9b5. I reviewed the issue history through Finding 22 and the existing floor analysis. I am correcting reviewer-noted comments and the commit rationale, then rerunning the final branch-head gate. No push or deployment.

Continuation start: branch `shim-memory`, based on `origin/dev` 804ac0e854ad0d489d4182270d5956244a3708f0; current head `efc30b6898dc7e00148acb14da534d4e6f53f9b5`. I reviewed the issue history through Finding 22 and the existing floor analysis. I am correcting reviewer-noted comments and the commit rationale, then rerunning the final branch-head gate. No push or deployment.
kayg commented 2026-10-13 20:47:21 +00:00
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Step: corrected three comments to describe the retained parsed matches and released action registry, and removed the unsupported D244 attribution from the commit rationale. Amended HEAD: 0b3bb4de57beb1cedf91ed8d040d8cbf80c99ada. Measurements and implementation are unchanged; the full branch-head gate is running.

Step: corrected three comments to describe the retained parsed matches and released action registry, and removed the unsupported D244 attribution from the commit rationale. Amended HEAD: `0b3bb4de57beb1cedf91ed8d040d8cbf80c99ada`. Measurements and implementation are unchanged; the full branch-head gate is running.
kayg commented 2026-10-13 21:04:12 +00:00
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Finding 23 — final serial scripts/verify fast at HEAD 0b3bb4de passed fmt, VT fmt, compile-out, Clippy, cargo-deny and all other test binaries, but crates/infraternal/tests/shim.rs::delivered_exit_cannot_release_another_owning_window failed in the workspace run (23 passed, 1 failed; assertion at shim.rs:805: “all owners released but shim remains”). This is outside the listed baseline-waiver cases; I am isolating and investigating it before finalizing. Static sizes also remain over the unchanged caps: x86_64 22,236,144 / 22,204,304 (+31,840), aarch64 19,664,376 / 19,638,744 (+25,632). Full raw gate log: verify-fast-final-head.log.

Finding 23 — final serial `scripts/verify fast` at HEAD `0b3bb4de` passed fmt, VT fmt, compile-out, Clippy, cargo-deny and all other test binaries, but `crates/infraternal/tests/shim.rs::delivered_exit_cannot_release_another_owning_window` failed in the workspace run (23 passed, 1 failed; assertion at `shim.rs:805`: “all owners released but shim remains”). This is outside the listed baseline-waiver cases; I am isolating and investigating it before finalizing. Static sizes also remain over the unchanged caps: x86_64 22,236,144 / 22,204,304 (+31,840), aarch64 19,664,376 / 19,638,744 (+25,632). Full raw gate log: [verify-fast-final-head.log](https://git.kayg.org/attachments/f50a749b-0d3c-47d8-8a98-a7c08e251813).
kayg commented 2026-10-13 21:05:01 +00:00
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Finding 23 follow-up — the failed shim lifecycle test passes alone (1/1, 0.37 s), and the complete shim integration target passes serially (24/24, 13.48 s). This points to an intermittent workspace-run failure; I am rerunning the full gate on the same head. Receipts: focused test, shim suite.

Finding 23 follow-up — the failed shim lifecycle test passes alone (1/1, 0.37 s), and the complete shim integration target passes serially (24/24, 13.48 s). This points to an intermittent workspace-run failure; I am rerunning the full gate on the same head. Receipts: [focused test](https://git.kayg.org/attachments/6997f980-68d6-4a6e-9cd3-40f4019a035c), [shim suite](https://git.kayg.org/attachments/9018daed-2468-4c3e-b6e3-ca5b924ad508).
kayg commented 2026-10-13 21:05:33 +00:00
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Finding 24 — the next scripts/verify fast attempt on the same head stopped in its build-host latency-proxy self-test before Rust gates: configured 300 ms RTT produced p50=314.40 ms and p99=493.19 ms. This is a noisy preflight result, not perf-VM evidence; I am retrying the full gate. Receipt: partial gate log.

Finding 24 — the next `scripts/verify fast` attempt on the same head stopped in its build-host latency-proxy self-test before Rust gates: configured 300 ms RTT produced p50=314.40 ms and p99=493.19 ms. This is a noisy preflight result, not perf-VM evidence; I am retrying the full gate. Receipt: [partial gate log](https://git.kayg.org/attachments/c4f77e7e-b8a0-4908-b6a0-173b475ce505).
kayg commented 2026-10-13 21:06:07 +00:00
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Finding 24 follow-up — the second full-gate retry again stopped before Rust checks in the local latency-proxy preflight: p50=362.58 ms, p99=372.38 ms for configured 300 ms. I will rerun the gate in the prescribed CPU-weighted user scope; these build-host timings are diagnostics only. Receipt: partial gate log.

Finding 24 follow-up — the second full-gate retry again stopped before Rust checks in the local latency-proxy preflight: p50=362.58 ms, p99=372.38 ms for configured 300 ms. I will rerun the gate in the prescribed CPU-weighted user scope; these build-host timings are diagnostics only. Receipt: [partial gate log](https://git.kayg.org/attachments/83c0b385-a769-4d2d-ada8-b5bc29dce859).
kayg commented 2026-10-13 21:10:37 +00:00
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Finding 25 — weighted scripts/verify fast passed all gate preflights, fmt, VT fmt, compile-out, Clippy and cargo-deny. The workspace test row failed only infraternal-agent::remote_client::server_path::tests::component_down_proves_tcp_fallback_when_enrolled_udp_is_unavailable (95 passed, 1 failed, 14 ignored); its assertion at remote_server_path_tests.rs:657 saw Disconnected, expected Fallback. Static outputs remain above the unchanged D243 caps: x86_64 +31,840 bytes; aarch64 +25,632 bytes. I am rerunning the exact test in isolation, then will retry the full gate. Raw log: weighted gate.

Finding 25 — weighted `scripts/verify fast` passed all gate preflights, fmt, VT fmt, compile-out, Clippy and cargo-deny. The workspace test row failed only `infraternal-agent::remote_client::server_path::tests::component_down_proves_tcp_fallback_when_enrolled_udp_is_unavailable` (95 passed, 1 failed, 14 ignored); its assertion at `remote_server_path_tests.rs:657` saw `Disconnected`, expected `Fallback`. Static outputs remain above the unchanged D243 caps: x86_64 +31,840 bytes; aarch64 +25,632 bytes. I am rerunning the exact test in isolation, then will retry the full gate. Raw log: [weighted gate](https://git.kayg.org/attachments/7551dc1b-6d59-42e0-b40c-0d4941f01b83).
kayg commented 2026-10-13 21:10:48 +00:00
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Finding 25 follow-up — the exact fallback test passes alone in the CPU-weighted scope: 1 passed, 0 failed, 0.60 s. I am retrying the full branch-head gate; no networking source changed. Receipt: focused fallback test.

Finding 25 follow-up — the exact fallback test passes alone in the CPU-weighted scope: 1 passed, 0 failed, 0.60 s. I am retrying the full branch-head gate; no networking source changed. Receipt: [focused fallback test](https://git.kayg.org/attachments/cfe71234-76fd-48ab-a1b0-ad57c62b6028).
kayg commented 2026-10-13 21:23:27 +00:00
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Finished: branch shim-memory, base origin/dev 804ac0e854, HEAD 0b3bb4de57beb1cedf91ed8d040d8cbf80c99ada.

Production static-PIE memory (perf VM infraternal-perf-test, x86_64, kernel 6.12.111, 4 vCPU, perf lock; one image per matrix; 1-minute load 1.08–2.92):

Shims Base PSS / shim Registry-release PSS / shim Saved / shim
1 5,784.0 KiB 5,748.0 KiB 36.0 KiB
10 1,556.2 KiB 1,524.9 KiB 31.3 KiB
100 1,134.8 KiB 1,102.2 KiB 32.6 KiB

At N=100, candidate PSS consists of 904 KiB private-dirty relocated image data, 46 KiB shared text+rodata PSS, 95.8 KiB anonymous mappings, 44.2 KiB stack, 8.2 KiB bss and 4 KiB heap. The anonymous mappings include about 48 KiB of VT page buffers. The 904 KiB image-data cost is unchanged by this source change. Text+rodata PSS per shim is 4,692 KiB at N=1, 468 KiB at N=10 and 46 KiB at N=100 when those shims share an image inode. Shims from distinct, deleted deployment inodes cannot share those clean file pages; each one-shim deployment cohort therefore retains about 4.7 MiB of text+rodata PSS. Shell PSS is excluded. Matrix receipt: memory JSON.

The registry-only release is 128 bytes smaller than origin/dev (22,236,144 vs 22,236,272 bytes). Three order-balanced latency passes at N=10 used 5,000 connect/snapshot and 10,000 echo samples per run, six runs per binary. Mean per-run p50/p99, base → candidate: Hello 0.099/0.472 → 0.073/0.208 ms; snapshot 0.065/0.298 → 0.051/0.161 ms; echo 0.260/1.233 → 0.256/0.607 ms. Echo p50 is 5 µs lower in aggregate; tails varied. Perf-VM load averaged 0.36–1.77. Latency receipt.

Measured floors; no process model chosen: Linux PTY/kernel overhead is about 27.9 KiB per session. One process per user measured 61.2 KiB PSS (59.1 KiB anonymous) per session with VT, or 0.90 KiB PSS (0.63 KiB anonymous) without VT; adding the PTY floor gives about 89 KiB or 29 KiB respectively. Thus ~1 KiB applies only to userspace bookkeeping with terminal state excluded. A forked child per session measured 176 KiB PSS/child plus a 443 KiB parent once (about 997 KiB saved per child versus exec), with a different persistent-parent lifecycle. Current one-process-per-session is 1,102.2 KiB PSS/shim at N=100 plus the PTY floor. The shell process is additional. These are measurement prototypes and trade-offs only; D13 remains unchanged. PTY floor receipt, one-process-per-user prototype, fork prototype.

Final scripts/verify fast on this head passed every row except the unchanged D243 static-size cap. Production artifacts: x86_64 22,236,144 / 22,204,304 bytes (+31,840); aarch64 19,664,376 / 19,638,744 (+25,632). The x86_64 origin/dev artifact is +31,968 bytes over the same cap; no cap was changed. Full attached log: final weighted gate.

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Reviewer self-check: validated shim arguments before detach/start, confirmed the ArgMatches borrow remains live while the action registry is dropped, checked non-shim dispatch and failure outputs remain synchronous, and verified D243 caps and D13 process lifecycle were not changed. Independent review found no functional/security defect after the comment and rationale corrections.

Finished: branch `shim-memory`, base `origin/dev` 804ac0e854ad0d489d4182270d5956244a3708f0, HEAD `0b3bb4de57beb1cedf91ed8d040d8cbf80c99ada`. **Production static-PIE memory (perf VM `infraternal-perf-test`, x86_64, kernel 6.12.111, 4 vCPU, perf lock; one image per matrix; 1-minute load 1.08–2.92):** | Shims | Base PSS / shim | Registry-release PSS / shim | Saved / shim | |---:|---:|---:|---:| | 1 | 5,784.0 KiB | 5,748.0 KiB | 36.0 KiB | | 10 | 1,556.2 KiB | 1,524.9 KiB | 31.3 KiB | | 100 | 1,134.8 KiB | 1,102.2 KiB | 32.6 KiB | At N=100, candidate PSS consists of 904 KiB private-dirty relocated image data, 46 KiB shared text+rodata PSS, 95.8 KiB anonymous mappings, 44.2 KiB stack, 8.2 KiB bss and 4 KiB heap. The anonymous mappings include about 48 KiB of VT page buffers. The 904 KiB image-data cost is unchanged by this source change. Text+rodata PSS per shim is 4,692 KiB at N=1, 468 KiB at N=10 and 46 KiB at N=100 when those shims share an image inode. Shims from distinct, deleted deployment inodes cannot share those clean file pages; each one-shim deployment cohort therefore retains about 4.7 MiB of text+rodata PSS. Shell PSS is excluded. Matrix receipt: [memory JSON](https://git.kayg.org/attachments/a656ea6a-38e4-45ce-8b0c-a03c68ad6eb2). The registry-only release is 128 bytes smaller than `origin/dev` (22,236,144 vs 22,236,272 bytes). Three order-balanced latency passes at N=10 used 5,000 connect/snapshot and 10,000 echo samples per run, six runs per binary. Mean per-run p50/p99, base → candidate: Hello 0.099/0.472 → 0.073/0.208 ms; snapshot 0.065/0.298 → 0.051/0.161 ms; echo 0.260/1.233 → 0.256/0.607 ms. Echo p50 is 5 µs lower in aggregate; tails varied. Perf-VM load averaged 0.36–1.77. [Latency receipt](https://git.kayg.org/attachments/a579c406-0deb-4810-a0c0-a03c68ad6eb2). **Measured floors; no process model chosen:** Linux PTY/kernel overhead is about 27.9 KiB per session. One process per user measured 61.2 KiB PSS (59.1 KiB anonymous) per session with VT, or 0.90 KiB PSS (0.63 KiB anonymous) without VT; adding the PTY floor gives about 89 KiB or 29 KiB respectively. Thus ~1 KiB applies only to userspace bookkeeping with terminal state excluded. A forked child per session measured 176 KiB PSS/child plus a 443 KiB parent once (about 997 KiB saved per child versus exec), with a different persistent-parent lifecycle. Current one-process-per-session is 1,102.2 KiB PSS/shim at N=100 plus the PTY floor. The shell process is additional. These are measurement prototypes and trade-offs only; D13 remains unchanged. [PTY floor receipt](https://git.kayg.org/attachments/5d12d35f-317f-4632-b937-0f30110baad6), [one-process-per-user prototype](https://git.kayg.org/attachments/8ddda284-bacf-4036-a385-5773493982c1), [fork prototype](https://git.kayg.org/attachments/365edb8f-f59f-428a-8106-3911fa45a54d). Final `scripts/verify fast` on this head passed every row except the unchanged D243 static-size cap. Production artifacts: x86_64 22,236,144 / 22,204,304 bytes (+31,840); aarch64 19,664,376 / 19,638,744 (+25,632). The x86_64 origin/dev artifact is +31,968 bytes over the same cap; no cap was changed. Full attached log: [final weighted gate](https://git.kayg.org/attachments/f9752fb9-339b-46f9-9a41-24128352e56a). ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` Reviewer self-check: validated shim arguments before detach/start, confirmed the `ArgMatches` borrow remains live while the action registry is dropped, checked non-shim dispatch and failure outputs remain synchronous, and verified D243 caps and D13 process lifecycle were not changed. Independent review found no functional/security defect after the comment and rationale corrections.
kayg commented 2026-10-13 21:23:38 +00:00
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Correction to the final comment: the memory JSON attachment link is here. The fork prototype’s ~997 KiB/child savings compares against its plain exec baseline (1,172.6 KiB PSS), before the registry-only reduction; against the final 1,102.2 KiB exec result the arithmetic difference is about 926 KiB/child. The measured child and parent figures remain 176 KiB and 443 KiB.

Correction to the final comment: the memory JSON attachment link is [here](https://git.kayg.org/attachments/a656ea6a-38e4-45ce-8b3e-cb7ebe443bda). The fork prototype’s ~997 KiB/child savings compares against its plain exec baseline (1,172.6 KiB PSS), before the registry-only reduction; against the final 1,102.2 KiB exec result the arithmetic difference is about 926 KiB/child. The measured child and parent figures remain 176 KiB and 443 KiB.
kayg commented 2026-10-13 21:26:27 +00:00
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Review start: branch review-shim-memory at job head 0b3bb4de57beb1cedf91ed8d040d8cbf80c99ada, diff base 804ac0e854ad0d489d4182270d5956244a3708f0. I read the full #205 comment history (no parent), the job report, CLAUDE.md, DECISIONS.md, docs/ARCHITECTURE.md, docs/PROCESS.md and contracts/shim.md. I will record confirmed gaps as failing tests on this branch. Per the brief, I will not use the perf VM.

Review start: branch `review-shim-memory` at job head `0b3bb4de57beb1cedf91ed8d040d8cbf80c99ada`, diff base `804ac0e854ad0d489d4182270d5956244a3708f0`. I read the full #205 comment history (no parent), the job report, `CLAUDE.md`, `DECISIONS.md`, `docs/ARCHITECTURE.md`, `docs/PROCESS.md` and `contracts/shim.md`. I will record confirmed gaps as failing tests on this branch. Per the brief, I will not use the perf VM.
kayg commented 2026-10-13 22:04:13 +00:00
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Independent review finished on job head 0b3bb4de57beb1cedf91ed8d040d8cbf80c99ada, diff base 804ac0e854ad0d489d4182270d5956244a3708f0.

Findings: P0 0, P1 0, P2 0, P3 0. No confirmed behavior or contract defect; no failing test was added. The __shim dispatch unit test passed, the shim integration target passed 24/24, and the full Rust test row passed. The review branch remains at the supplied head because there is no failing-test evidence to commit; nothing was pushed.

The final gate's only failure is the D243 static-size check already reported on this issue: x86_64 22,236,144 / 22,204,304 bytes (+31,840); aarch64 19,664,376 / 19,638,744 bytes (+25,632). The candidate is smaller than origin/dev per the recorded size receipts. Per this brief, I did not use the perf VM, so I did not independently remeasure the PSS or latency claims.

Verdict: MERGE (no P0/P1).

scripts/verify fast output on the job head:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+
Independent review finished on job head `0b3bb4de57beb1cedf91ed8d040d8cbf80c99ada`, diff base `804ac0e854ad0d489d4182270d5956244a3708f0`. Findings: P0 0, P1 0, P2 0, P3 0. No confirmed behavior or contract defect; no failing test was added. The `__shim` dispatch unit test passed, the shim integration target passed 24/24, and the full Rust test row passed. The review branch remains at the supplied head because there is no failing-test evidence to commit; nothing was pushed. The final gate's only failure is the D243 static-size check already reported on this issue: x86_64 22,236,144 / 22,204,304 bytes (+31,840); aarch64 19,664,376 / 19,638,744 bytes (+25,632). The candidate is smaller than `origin/dev` per the recorded size receipts. Per this brief, I did not use the perf VM, so I did not independently remeasure the PSS or latency claims. Verdict: MERGE (no P0/P1). `scripts/verify fast` output on the job head: ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ```
kayg commented 2026-10-13 22:04:38 +00:00
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Correction to my finish note: the #205 receipts specifically establish that the x86_64 candidate is 128 bytes smaller than origin/dev. I did not independently compare aarch64 candidate size against origin/dev; the gate confirms its absolute size and D243 overage only. The verdict and gate rows are unchanged.

Correction to my finish note: the #205 receipts specifically establish that the x86_64 candidate is 128 bytes smaller than `origin/dev`. I did not independently compare aarch64 candidate size against `origin/dev`; the gate confirms its absolute size and D243 overage only. The verdict and gate rows are unchanged.
kayg commented 2026-10-14 02:56:43 +00:00
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Start: branch shim-relocs, worktree .worktrees/shim-relocs, based on origin/dev b182529fcc38ed65c53ad323b55e444beaa4e2a7. I read all 45 comments on #205; it has no parent. Continuing from the prior shim-memory result (registry-only release: 32.6 KiB PSS/shim saved at N=100, image relocation data still 904 KiB) under D268 Q20: reduce relocation-dirtied memory while preserving ASLR and features. I’m locating the relocation sources and crate ownership before proposing code changes.

Start: branch `shim-relocs`, worktree `.worktrees/shim-relocs`, based on `origin/dev` `b182529fcc38ed65c53ad323b55e444beaa4e2a7`. I read all 45 comments on #205; it has no parent. Continuing from the prior shim-memory result (registry-only release: 32.6 KiB PSS/shim saved at N=100, image relocation data still 904 KiB) under D268 Q20: reduce relocation-dirtied memory while preserving ASLR and features. I’m locating the relocation sources and crate ownership before proposing code changes.
kayg commented 2026-10-14 02:56:59 +00:00
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Start: branch process-per-user, base/head b182529fcc (origin/dev). Read all #205 comments; no parent is recorded. Continuing the measured floor into a non-default prototype under D268 Q20 option c, preserving production defaults and frozen shim frames. Measurements will use the explicitly named perf VM, with the shared lock; no deployment.

Start: branch process-per-user, base/head b182529fcc38ed65c53ad323b55e444beaa4e2a7 (origin/dev). Read all #205 comments; no parent is recorded. Continuing the measured floor into a non-default prototype under D268 Q20 option c, preserving production defaults and frozen shim frames. Measurements will use the explicitly named perf VM, with the shared lock; no deployment.
kayg commented 2026-10-14 02:58:45 +00:00
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Prototype boundary (D268): reuse the production shim decoder, peer/writer handling, ring and PTY launcher in a feature-gated shared reactor. Each session keeps its existing private socket and frozen v1 frames/capabilities. Lazy VT retains a small complete origin prefix, materializing before that bound, any snapshot or any geometry change; it cannot discard old output before materialization. One blocking poll covers all sessions; bounded per-session progress prevents an output flood consuming the whole reactor.
D240/D247 require a host keyed by (person, host account), not UID alone: two people using the same account must have separate PAM login units/hosts. The measurement prototype runs only as its own effective UID; production login dispatch remains unchanged. A process crash remains a person-wide failure; Rust session panics can be contained but native faults/OOM cannot. Host upgrades need a separate all-descriptor/state handoff design; infraternal agent upgrades merely reconnect to the surviving host. No frozen contract edit or default switch is proposed by this prototype.

Prototype boundary (D268): reuse the production shim decoder, peer/writer handling, ring and PTY launcher in a feature-gated shared reactor. Each session keeps its existing private socket and frozen v1 frames/capabilities. Lazy VT retains a small complete origin prefix, materializing before that bound, any snapshot or any geometry change; it cannot discard old output before materialization. One blocking poll covers all sessions; bounded per-session progress prevents an output flood consuming the whole reactor. D240/D247 require a host keyed by (person, host account), not UID alone: two people using the same account must have separate PAM login units/hosts. The measurement prototype runs only as its own effective UID; production login dispatch remains unchanged. A process crash remains a person-wide failure; Rust session panics can be contained but native faults/OOM cannot. Host upgrades need a separate all-descriptor/state handoff design; infraternal agent upgrades merely reconnect to the surviving host. No frozen contract edit or default switch is proposed by this prototype.
kayg commented 2026-10-14 03:17:30 +00:00
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Design finding: a shared host must be keyed by (person, Unix account, host), not UID (D240/D247). Existing frozen Hello can advertise the same host PID for many session IDs: infraternal-agent/src/lifecycle.rs and process_exits_linux.rs index lifetimes by session ID, so PID equality is not itself a protocol change; the prototype preserves one socket/session. Native VT snapshot is a bounded repaint, not an exact export/import (terminal.rs, D110), so transferring all PTY fds alone cannot certify host hot-upgrade survival. The research README explicitly keeps old hosts alive across infraternal agent upgrades and identifies exact state/child-status handoff as adoption work.
The optional reactor caps aggregate detached ring/history retention at 64 MiB each; screen/parser/peer/input allocations remain additional. This retention difference will be explicit in the memory comparison. Builds are in the job cache; no perf results yet (shared build-host load is high, timing there is not evidence).

Design finding: a shared host must be keyed by (person, Unix account, host), not UID (D240/D247). Existing frozen Hello can advertise the same host PID for many session IDs: infraternal-agent/src/lifecycle.rs and process_exits_linux.rs index lifetimes by session ID, so PID equality is not itself a protocol change; the prototype preserves one socket/session. Native VT snapshot is a bounded repaint, not an exact export/import (terminal.rs, D110), so transferring all PTY fds alone cannot certify host hot-upgrade survival. The research README explicitly keeps old hosts alive across infraternal agent upgrades and identifies exact state/child-status handoff as adoption work. The optional reactor caps aggregate detached ring/history retention at 64 MiB each; screen/parser/peer/input allocations remain additional. This retention difference will be explicit in the memory comparison. Builds are in the job cache; no perf results yet (shared build-host load is high, timing there is not evidence).
kayg commented 2026-10-14 03:35:04 +00:00
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Step complete: d3ba7755 adds only the non-default process-per-user feature and feature-scoped nix/uio support; pushed to process-per-user. Feature shim Clippy and fmt pass. Four optional reactor tests pass (admission, deferred materialization/resize, unfinished-sequence threshold, real-PTY VT panic with surviving sibling). The first differential-test fixture incorrectly required an exact repaint for fresh native state; corrected it to compare the existing native oracle independently and require equal repaint/approximation behavior. The full shim feature suite is running; static prototype build continues. No performance results claimed yet.

Step complete: d3ba7755 adds only the non-default process-per-user feature and feature-scoped nix/uio support; pushed to process-per-user. Feature shim Clippy and fmt pass. Four optional reactor tests pass (admission, deferred materialization/resize, unfinished-sequence threshold, real-PTY VT panic with surviving sibling). The first differential-test fixture incorrectly required an exact repaint for fresh native state; corrected it to compare the existing native oracle independently and require equal repaint/approximation behavior. The full shim feature suite is running; static prototype build continues. No performance results claimed yet.
kayg commented 2026-10-14 03:48:53 +00:00
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Step complete: 204e9de2 adds the non-default shared reactor, lazy VT prefix, bounded aggregate retention and static state adapter. Shim-feature Clippy and fmt pass; full feature suite: 84 passed, 0 failed, 13 ignored. The native differential corpora, real-PTY panic/sibling test and existing resize/refusal tests pass. A staging-only extra EOF blank line was removed by amending the atomic reactor commit; implementation is unchanged. Prototype CLI and its separate integration tests remain uncommitted while their gates run; production default remains per-session processes. Static build and perf measurements are still pending.

Step complete: 204e9de2 adds the non-default shared reactor, lazy VT prefix, bounded aggregate retention and static state adapter. Shim-feature Clippy and fmt pass; full feature suite: 84 passed, 0 failed, 13 ignored. The native differential corpora, real-PTY panic/sibling test and existing resize/refusal tests pass. A staging-only extra EOF blank line was removed by amending the atomic reactor commit; implementation is unchanged. Prototype CLI and its separate integration tests remain uncommitted while their gates run; production default remains per-session processes. Static build and perf measurements are still pending.
kayg commented 2026-10-14 03:50:51 +00:00
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Rootful integration finding: crates/infraternal-agent/src/sessions.rs::connect_with (lines 280–286 at the task base) rejects a peer unless its UID is 0 or equals the infraternal agent UID. Therefore a pooled host running inside a non-root account's D247 PAM unit cannot yet attach to a rootful infraternal agent; rootless/same-UID connections preserve the existing contract. Adoption needs expected-host-UID binding from authenticated person/account launch metadata plus SO_PEERCRED validation and a root-owned discovery index pointing into private person-login state. Reject blanket acceptance of arbitrary local UIDs and UID-only person identity. This is design work recorded before any authentication code change; the prototype and production defaults do not alter that check.

Rootful integration finding: crates/infraternal-agent/src/sessions.rs::connect_with (lines 280–286 at the task base) rejects a peer unless its UID is 0 or equals the infraternal agent UID. Therefore a pooled host running inside a non-root account's D247 PAM unit cannot yet attach to a rootful infraternal agent; rootless/same-UID connections preserve the existing contract. Adoption needs expected-host-UID binding from authenticated person/account launch metadata plus SO_PEERCRED validation and a root-owned discovery index pointing into private person-login state. Reject blanket acceptance of arbitrary local UIDs and UID-only person identity. This is design work recorded before any authentication code change; the prototype and production defaults do not alter that check.
kayg commented 2026-10-14 03:51:19 +00:00
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Shared-reactor verification receipts at 204e9de2: feature shim Clippy PASS log; feature suite 84 passed, 0 failed, 13 ignored full test log. These are functional build-host receipts, not performance measurements. New oversized-ancillary refusal test and CLI feature/integration gates are queued after the workspace iterate check; static prototype build continues.

Shared-reactor verification receipts at 204e9de2: feature shim Clippy PASS [log](https://git.kayg.org/attachments/f7a20c3c-dd62-4e39-939c-35299380aeb5); feature suite 84 passed, 0 failed, 13 ignored [full test log](https://git.kayg.org/attachments/c4b643cc-e7d8-47eb-a706-aa66338642cd). These are functional build-host receipts, not performance measurements. New oversized-ancillary refusal test and CLI feature/integration gates are queued after the workspace iterate check; static prototype build continues.
kayg commented 2026-10-14 03:52:21 +00:00
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Finding 1 — the task’s 1,102 KiB N=100 reference is the prior registry-release candidate (0b3bb4de), which is not in origin/dev or this branch’s specified base. Keeping shim-relocs based on origin/dev b182529fcc38ed65c53ad323b55e444beaa4e2a7, the exact production static-PIE artifact measures 5,748 / 1,554.4 / 1,134.76 KiB PSS per shim at N=1/10/100. At N=100, Private_Dirty/Anonymous is 1,088.76 KiB/shim and the executable writable mapping is 900 KiB/shim. The build is 22,275,888 bytes, 71,584 above the unchanged 22,204,304-byte x86 D243 cap.

The artifact has 48,931 expanded RELR locations; .data.rel.ro is 855,192 bytes, .got 4,928 bytes, .got.plt 24 bytes, and .data 56,048 bytes. Measurements ran on infraternal-perf-test (kernel 6.12.111+deb13-amd64), with the perf lock held and CPUWeight=10000. Receipts: memory matrix, relocation baseline.

Finding 1 — the task’s 1,102 KiB N=100 reference is the prior registry-release candidate (`0b3bb4de`), which is not in `origin/dev` or this branch’s specified base. Keeping `shim-relocs` based on `origin/dev` `b182529fcc38ed65c53ad323b55e444beaa4e2a7`, the exact production static-PIE artifact measures 5,748 / 1,554.4 / 1,134.76 KiB PSS per shim at N=1/10/100. At N=100, Private_Dirty/Anonymous is 1,088.76 KiB/shim and the executable writable mapping is 900 KiB/shim. The build is 22,275,888 bytes, 71,584 above the unchanged 22,204,304-byte x86 D243 cap. The artifact has 48,931 expanded RELR locations; `.data.rel.ro` is 855,192 bytes, `.got` 4,928 bytes, `.got.plt` 24 bytes, and `.data` 56,048 bytes. Measurements ran on `infraternal-perf-test` (kernel 6.12.111+deb13-amd64), with the perf lock held and CPUWeight=10000. Receipts: [memory matrix](https://git.kayg.org/attachments/205d3273-dd99-4a3b-9986-dfa709dea4f6), [relocation baseline](https://git.kayg.org/attachments/3ebded4f-8cd7-4087-bfdd-8261f8a3c212).
kayg commented 2026-10-14 04:07:50 +00:00
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Prototype findings/fixes: 97deccd2 keeps VT unallocated when the first writer reapplies unchanged geometry (D268). The regression failed before the fix; all 5 reactor tests now pass and feature Clippy passes. Native-state comparison confirms equivalence to eager same-size resize.
Descriptor helper break-it test found a refusal leak with SO_PASSCRED plus 253 SCM_RIGHTS descriptors: isolated process fd count grew from 7 to 253 on rejection. The helper now reserves credential/ordinary ancillary space, rejects unowned pidfd/security-label socket options before receiving, and wraps every received master immediately for cleanup. New failing-test receipt and the fixed multi-batch/oversize/credential tests are being recorded before the helper's separate commit. No authentication or production default changed.

Prototype findings/fixes: 97deccd2 keeps VT unallocated when the first writer reapplies unchanged geometry (D268). The regression failed before the fix; all 5 reactor tests now pass and feature Clippy passes. Native-state comparison confirms equivalence to eager same-size resize. Descriptor helper break-it test found a refusal leak with SO_PASSCRED plus 253 SCM_RIGHTS descriptors: isolated process fd count grew from 7 to 253 on rejection. The helper now reserves credential/ordinary ancillary space, rejects unowned pidfd/security-label socket options before receiving, and wraps every received master immediately for cleanup. New failing-test receipt and the fixed multi-batch/oversize/credential tests are being recorded before the helper's separate commit. No authentication or production default changed.
kayg commented 2026-10-14 04:16:36 +00:00
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Native lifetime finding for adoption: crates/infraternal-shim/src/terminal_native.rs intentionally drops ownership of a native handle after resize errors because page ownership may be partially mutated; its comment says the abandoned allocations persist until shim process exit. In a pooled PID, retiring the Rust session does not reclaim those allocations while siblings keep that PID alive. Therefore 64-MiB ring/history caps do not bound repeated native-resize-failure memory. The research design requires transactional native ownership/resize or an isolated fallback/guardian before claiming a whole-host worst-case bound. No native ownership rule or default was changed.

Native lifetime finding for adoption: crates/infraternal-shim/src/terminal_native.rs intentionally drops ownership of a native handle after resize errors because page ownership may be partially mutated; its comment says the abandoned allocations persist until shim process exit. In a pooled PID, retiring the Rust session does not reclaim those allocations while siblings keep that PID alive. Therefore 64-MiB ring/history caps do not bound repeated native-resize-failure memory. The research design requires transactional native ownership/resize or an isolated fallback/guardian before claiming a whole-host worst-case bound. No native ownership rule or default was changed.
kayg commented 2026-10-14 04:20:01 +00:00
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Step complete: d9f39f03 adds the separate opt-in audited PTY-master handoff module; pushed to process-per-user. All 130 fixture masters survive multi-batch transfer and original-owner drop, CLOEXEC is verified, oversized batches close all imported descriptors, and credential-ancillary refusal now returns to the same 7-descriptor count. Three real-PTY/descriptor tests and feature Clippy pass. This primitive is explicitly not whole-host hot-upgrade survival; the state transaction remains in the research design. CLI wiring/integration tests and the static/perf/final gates remain next.

Step complete: d9f39f03 adds the separate opt-in audited PTY-master handoff module; pushed to process-per-user. All 130 fixture masters survive multi-batch transfer and original-owner drop, CLOEXEC is verified, oversized batches close all imported descriptors, and credential-ancillary refusal now returns to the same 7-descriptor count. Three real-PTY/descriptor tests and feature Clippy pass. This primitive is explicitly not whole-host hot-upgrade survival; the state transaction remains in the research design. CLI wiring/integration tests and the static/perf/final gates remain next.
kayg commented 2026-10-14 04:25:11 +00:00
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Finding 2: the production x86_64 static PIE has 48,931 expanded RELR locations, .data.rel.ro 855,192 bytes and .got 4,928 bytes. The diagnostic source map attributes 18,080 bytes to infraternal_plugin_mesh and 12,648 bytes to infraternal_agent; it also attributes 471,072 bytes to openssl_sys, 69,608 to infraternal_server, and 60,456 to mime_guess. The diagnostic map is explicitly not the production measured binary.

Perf VM baseline on infraternal-perf-test, load 0.38/0.26/0.34 at N=100: PSS 1,134.76 KiB/shim; Private_Dirty/Anonymous 1,088.76 KiB/shim. N=1 PSS 5,748 KiB; N=10 1,554.4 KiB/shim. Attach state handshake: p50/p99 0.0485/0.2754 ms; PTY input-to-echo: 0.2876/0.9896 ms (5,000 attach and 10,000 echo samples; CPUWeight 10000, perf lock held). The pre-change acceptance check is RED at 1,134.76 KiB against 1,120 KiB/shim.

Evidence: map attribution, baseline latency, pre-change PSS budget.

Finding 2: the production x86_64 static PIE has 48,931 expanded RELR locations, `.data.rel.ro` 855,192 bytes and `.got` 4,928 bytes. The diagnostic source map attributes 18,080 bytes to `infraternal_plugin_mesh` and 12,648 bytes to `infraternal_agent`; it also attributes 471,072 bytes to `openssl_sys`, 69,608 to `infraternal_server`, and 60,456 to `mime_guess`. The diagnostic map is explicitly not the production measured binary. Perf VM baseline on `infraternal-perf-test`, load 0.38/0.26/0.34 at N=100: PSS 1,134.76 KiB/shim; Private_Dirty/Anonymous 1,088.76 KiB/shim. N=1 PSS 5,748 KiB; N=10 1,554.4 KiB/shim. Attach state handshake: p50/p99 0.0485/0.2754 ms; PTY input-to-echo: 0.2876/0.9896 ms (5,000 attach and 10,000 echo samples; CPUWeight 10000, perf lock held). The pre-change acceptance check is RED at 1,134.76 KiB against 1,120 KiB/shim. Evidence: [map attribution](https://git.kayg.org/attachments/11296366-97ec-4736-bd95-f37114fe8634), [baseline latency](https://git.kayg.org/attachments/e3fe62a6-b459-4040-aa47-2709605afc72), [pre-change PSS budget](https://git.kayg.org/attachments/f99b1bc2-8b2a-4eb1-bf92-f614a4a88335).
kayg commented 2026-10-14 04:39:14 +00:00
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Steps complete: 23ba0964 wires the optional batch into the same D7 binary through the existing hidden action schema; 74b537a0 adds separate real-PTY integration tests. Both pushed to process-per-user. Touched-crate feature Clippy PASS; two integration tests PASS, including real infraternal-agent discovery of distinct IDs with one Hello PID, writer cursor recovery, resize/snapshot, and independent exit/owner release. Initial test assumptions were corrected against existing frozen behavior: spontaneous durable Ack can precede requested State (daemon.rs:820–825); caps-zero peers receive Error(2) for an unrepresentable faithful repaint, so the test negotiates approximation as production does. The static prototype build passed; default-feature static comparison image is building. Performance and final head gate remain pending.

Regression/ownership receipts: same-size resize red, five reactor tests green, ancillary refusal red, three handoff tests green, handoff Clippy.

Steps complete: 23ba0964 wires the optional batch into the same D7 binary through the existing hidden action schema; 74b537a0 adds separate real-PTY integration tests. Both pushed to process-per-user. Touched-crate feature Clippy PASS; two integration tests PASS, including real infraternal-agent discovery of distinct IDs with one Hello PID, writer cursor recovery, resize/snapshot, and independent exit/owner release. Initial test assumptions were corrected against existing frozen behavior: spontaneous durable Ack can precede requested State (daemon.rs:820–825); caps-zero peers receive Error(2) for an unrepresentable faithful repaint, so the test negotiates approximation as production does. The static prototype build passed; default-feature static comparison image is building. Performance and final head gate remain pending. Regression/ownership receipts: [same-size resize red](https://git.kayg.org/attachments/c7a3e5b6-b42b-43d8-ad37-801f8dafd9da), [five reactor tests green](https://git.kayg.org/attachments/c7095a67-a6c6-4112-ba0f-3b2cf1da4355), [ancillary refusal red](https://git.kayg.org/attachments/c6c45fe5-4271-4864-a493-ae608ef38fa9), [three handoff tests green](https://git.kayg.org/attachments/837aa4d9-f212-4fb6-8485-e26ab41ab84d), [handoff Clippy](https://git.kayg.org/attachments/f3779505-a8cb-4375-95cd-e1c1d5f761fa).
kayg commented 2026-10-14 05:02:17 +00:00
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Finding: the lazy Mesh metadata candidate reduced .data.rel.ro by 4,128 bytes and .relr.dyn by 56 bytes, but grew the production binary by 7,808 bytes (22,283,696 bytes total; +79,392 over the D243 cap). It does not meet the no-growth constraint. I attached the exact size and section comparison. I’ll measure its runtime effect on the perf VM, then revise or discard this representation.

Evidence: metadata-candidate-size.txt

Finding: the lazy Mesh metadata candidate reduced `.data.rel.ro` by 4,128 bytes and `.relr.dyn` by 56 bytes, but grew the production binary by 7,808 bytes (22,283,696 bytes total; +79,392 over the D243 cap). It does not meet the no-growth constraint. I attached the exact size and section comparison. I’ll measure its runtime effect on the perf VM, then revise or discard this representation. Evidence: [metadata-candidate-size.txt](https://git.kayg.org/attachments/5d399df6-ca41-43e9-b42d-91d02a55dcd7)
kayg commented 2026-10-14 05:11:13 +00:00
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Finding: the lazy Mesh metadata conversion does not reach the memory budget. On the perf VM it measured N=1/10/100 PSS of 5,880 / 1,563 / 1,131.2 KiB per shim, versus baseline 5,748 / 1,554.4 / 1,134.76 KiB; N=100 saves only 3.56 KiB and remains 11.2 KiB over the 1,120 KiB budget. Private dirty at N=100 fell 4.56 KiB. The binary remains 7,808 bytes larger, with .data.rel.ro down 4,128 bytes and .relr.dyn down 56 bytes.

Paired attach/echo samples were run at perf VM load averages 1.11 and 1.23 before the runs (baseline/candidate). Candidate p99 did not regress: Hello 0.6000→0.3673 ms, attach 0.4557→0.3691 ms, input-to-echo 1.0898→1.0214 ms. This representation is insufficient for the target and violates the binary size rule; I’m replacing it with a more compact table representation.

Evidence: memory-candidate.txt, latency-baseline-paired.txt, latency-candidate-paired.txt, metadata-candidate-size.txt

Finding: the lazy Mesh metadata conversion does not reach the memory budget. On the perf VM it measured N=1/10/100 PSS of 5,880 / 1,563 / 1,131.2 KiB per shim, versus baseline 5,748 / 1,554.4 / 1,134.76 KiB; N=100 saves only 3.56 KiB and remains 11.2 KiB over the 1,120 KiB budget. Private dirty at N=100 fell 4.56 KiB. The binary remains 7,808 bytes larger, with `.data.rel.ro` down 4,128 bytes and `.relr.dyn` down 56 bytes. Paired attach/echo samples were run at perf VM load averages 1.11 and 1.23 before the runs (baseline/candidate). Candidate p99 did not regress: Hello 0.6000→0.3673 ms, attach 0.4557→0.3691 ms, input-to-echo 1.0898→1.0214 ms. This representation is insufficient for the target and violates the binary size rule; I’m replacing it with a more compact table representation. Evidence: [memory-candidate.txt](https://git.kayg.org/attachments/8ee4711b-6974-4bd3-aa1b-a6c95a893430), [latency-baseline-paired.txt](https://git.kayg.org/attachments/a79444ee-9df6-46c6-a356-683ed259ab1f), [latency-candidate-paired.txt](https://git.kayg.org/attachments/e52b50e6-f224-4031-84a3-33c486288e3e), [metadata-candidate-size.txt](https://git.kayg.org/attachments/5d399df6-ca41-43e9-b42d-91d02a55dcd7)
kayg commented 2026-10-14 05:34:28 +00:00
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Start: ppu-soak at 74b537a06d, based on origin/process-per-user at the same SHA. Read all 61 issue comments; no parent recorded. Own only test/bench harness files under D270; product code stays with process-per-user. Perf VM access via NetBird succeeds. Existing parser panic injection is cfg(test); whole-host upgrade and production login discovery are explicitly incomplete. Build a seeded stdlib harness and report unsupported paths as failures, not simulated passes. No deployment.

Start: ppu-soak at 74b537a06d942aade23efdc714c47241289eb89a, based on origin/process-per-user at the same SHA. Read all 61 issue comments; no parent recorded. Own only test/bench harness files under D270; product code stays with process-per-user. Perf VM access via NetBird succeeds. Existing parser panic injection is cfg(test); whole-host upgrade and production login discovery are explicitly incomplete. Build a seeded stdlib harness and report unsupported paths as failures, not simulated passes. No deployment.
kayg commented 2026-10-14 05:35:12 +00:00
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Start: branch bench-vs-tmux, measurement head 74b537a06d; comparison base origin/dev 97366a3b64 (common ancestor b182529fcc). Prototype head origin/process-per-user 74b537a06d. I read all 61 comments on #205; it has no parent. This run follows the published-reference comparison brief and makes no product-code changes.

Start: branch bench-vs-tmux, measurement head 74b537a06d942aade23efdc714c47241289eb89a; comparison base origin/dev 97366a3b645905fbb3a47ebea81de27f69017e78 (common ancestor b182529fcc38ed65c53ad323b55e444beaa4e2a7). Prototype head origin/process-per-user 74b537a06d942aade23efdc714c47241289eb89a. I read all 61 comments on #205; it has no parent. This run follows the published-reference comparison brief and makes no product-code changes.
kayg commented 2026-10-14 05:36:11 +00:00
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Finding: origin/process-per-user contains the reactor readiness fix at 5aeac62 (after 74b537a), enabling indexed kernel readiness for the research host. Its commit records 38.57 CPU seconds for five light-output rounds at 1,000 sessions before the fix, caused by scanning every child per socket event. The bench-vs-tmux worktree started two commits behind that head; I am fast-forwarding the measurement branch to 5aeac62 so prototype CPU rows include the fix. No product code is being authored in this lane.

Finding: `origin/process-per-user` contains the reactor readiness fix at 5aeac62 (after 74b537a), enabling indexed kernel readiness for the research host. Its commit records 38.57 CPU seconds for five light-output rounds at 1,000 sessions before the fix, caused by scanning every child per socket event. The bench-vs-tmux worktree started two commits behind that head; I am fast-forwarding the measurement branch to 5aeac62 so prototype CPU rows include the fix. No product code is being authored in this lane.
kayg commented 2026-10-14 05:39:26 +00:00
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Initial measured prototype (before indexed reactor), perf VM infraternal-perf-test, 4 vCPU, Linux 6.12.111, static PIE, 80x24, shared lock and private 5-GiB scope. Host PSS/session in KiB; shells/kernel/generators are additional:

N default idle pooled idle default light pooled light default flood pooled flood
1 5756.00 5068.00 5760.00 5068.00 31768.00 36624.00
10 1553.70 508.00 1559.70 510.00 27493.80 17716.80
100 1134.48 52.56 1142.60 55.32 22715.00 2063.12
1000 1092.64 6.86 1100.92 9.62 1406.76 902.90

All eight idle samples: 0 CPU ticks and 0 context switches over five seconds. Pooled N=1000 total idle/light PSS: 6856/9620 KiB; shell PSS about 2323674 KiB remains additional. The N=1000 baseline flood is finite 32768 bytes/session; it is not a sustained-worst-case comparison. Pooled N=1000 floods continuously; that first run timed out during flood echo sampling, so no completed N=1000 pooled latency claim.

CPU finding: five light-output rounds at N=1000 took pooled 3857 ticks/43.754 s versus default 41 ticks/7.266 s (100 Hz). That is about 38.57 vs 0.41 CPU seconds; the original pooled reactor scanned every idle session and called waitpid on every socket event. 9756dd77 replaces it with indexed readiness and unique fd identities; rerun pending. Pure idle memory win is substantial, but the first CPU implementation is rejected for adoption.

Retention differs under flooding: pooled logical ring/history totals cap at 64 MiB each; physical VT pages and allocator overhead remain additional. N=1 pooled flood PSS is worse (36624 vs 31768 KiB); N=100 pooled 206312 vs default 2271500 KiB. These are measured workload results, not a whole-host worst-case RSS bound. Existing native resize tombstones and aggregate peer/input bounds remain adoption risks.

Source/image: default 22275888 bytes, SHA-256 34686fe8983d7ab52b656d2b18dd858742b4c85e084b3cccd9ee5a8a3d78f306; initial prototype 22304848 bytes, bfd54f78e7a6f9d4911bdd16e35f9f4d149df2c2bec5b7a127039ce6af89c469. Load averages per phase are in receipts; these runs are sequential, not a latency-balanced A/B study. Final comparison and gate remain pending.

Initial measured prototype (before indexed reactor), perf VM infraternal-perf-test, 4 vCPU, Linux 6.12.111, static PIE, 80x24, shared lock and private 5-GiB scope. Host PSS/session in KiB; shells/kernel/generators are additional: | N | default idle | pooled idle | default light | pooled light | default flood | pooled flood | |---:|---:|---:|---:|---:|---:|---:| | 1 | 5756.00 | 5068.00 | 5760.00 | 5068.00 | 31768.00 | 36624.00 | | 10 | 1553.70 | 508.00 | 1559.70 | 510.00 | 27493.80 | 17716.80 | | 100 | 1134.48 | 52.56 | 1142.60 | 55.32 | 22715.00 | 2063.12 | | 1000 | 1092.64 | 6.86 | 1100.92 | 9.62 | 1406.76 | 902.90 | All eight idle samples: 0 CPU ticks and 0 context switches over five seconds. Pooled N=1000 total idle/light PSS: 6856/9620 KiB; shell PSS about 2323674 KiB remains additional. The N=1000 baseline flood is finite 32768 bytes/session; it is not a sustained-worst-case comparison. Pooled N=1000 floods continuously; that first run timed out during flood echo sampling, so no completed N=1000 pooled latency claim. CPU finding: five light-output rounds at N=1000 took pooled 3857 ticks/43.754 s versus default 41 ticks/7.266 s (100 Hz). That is about 38.57 vs 0.41 CPU seconds; the original pooled reactor scanned every idle session and called waitpid on every socket event. 9756dd77 replaces it with indexed readiness and unique fd identities; rerun pending. Pure idle memory win is substantial, but the first CPU implementation is rejected for adoption. Retention differs under flooding: pooled logical ring/history totals cap at 64 MiB each; physical VT pages and allocator overhead remain additional. N=1 pooled flood PSS is worse (36624 vs 31768 KiB); N=100 pooled 206312 vs default 2271500 KiB. These are measured workload results, not a whole-host worst-case RSS bound. Existing native resize tombstones and aggregate peer/input bounds remain adoption risks. Source/image: default 22275888 bytes, SHA-256 34686fe8983d7ab52b656d2b18dd858742b4c85e084b3cccd9ee5a8a3d78f306; initial prototype 22304848 bytes, bfd54f78e7a6f9d4911bdd16e35f9f4d149df2c2bec5b7a127039ce6af89c469. Load averages per phase are in receipts; these runs are sequential, not a latency-balanced A/B study. Final comparison and gate remain pending.
kayg commented 2026-10-14 05:43:37 +00:00
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Initial matrix receipts (before indexed readiness, including the incomplete pooled N=1000 flood-latency run): combined output, N=1 default, N=1 pooled, N=10 default, N=10 pooled, N=100 default, N=100 pooled, N=1000 default bounded burst, N=1000 pooled partial. The next image removes full-session/child scans on ordinary events; results pending.

Initial matrix receipts (before indexed readiness, including the incomplete pooled N=1000 flood-latency run): [combined output](https://git.kayg.org/attachments/09298cf2-a682-4429-8c52-ca2cc49306a0), [N=1 default](https://git.kayg.org/attachments/b9d8568a-581b-40e0-a936-6fe8fa13c615), [N=1 pooled](https://git.kayg.org/attachments/7c9fd8e1-a1e3-4893-8faa-cffd7c7db306), [N=10 default](https://git.kayg.org/attachments/73d88d3c-2e8f-4a58-a471-a3d3c8e88b60), [N=10 pooled](https://git.kayg.org/attachments/e012cea1-a52b-4c36-bfe0-00cb498bd16f), [N=100 default](https://git.kayg.org/attachments/6d1c08a4-5c9f-450b-a1fd-501001b299d0), [N=100 pooled](https://git.kayg.org/attachments/7756b24e-2927-4d5c-abd9-28313c50e220), [N=1000 default bounded burst](https://git.kayg.org/attachments/874f52df-da1c-448e-9780-004e264a888c), [N=1000 pooled partial](https://git.kayg.org/attachments/b3247be0-dc7a-4f42-bb96-73099963b264). The next image removes full-session/child scans on ordinary events; results pending.
kayg commented 2026-10-14 05:46:58 +00:00
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Indexed readiness step: 9756dd77; harness/regressions 1bd46601; design README 90c684a3. All pushed to process-per-user. Six host tests (including descriptor-number reuse), two real-PTY/infraternal-agent integration tests and feature Clippy pass: Clippy, host tests, integration. Marker detector failed inside large/fragmented flood frames before the fix and now passes all three cases: red, green.

Milestone scripts/verify iterate passed all Rust and TypeScript checks; this is not the final gate: complete output. Branch-head scripts/verify fast is running. Indexed perf image rebuild/measurements pending; no new performance success claim yet. Production defaults unchanged, no deploy.

Indexed readiness step: 9756dd77; harness/regressions 1bd46601; design README 90c684a3. All pushed to process-per-user. Six host tests (including descriptor-number reuse), two real-PTY/infraternal-agent integration tests and feature Clippy pass: [Clippy](https://git.kayg.org/attachments/0f56b211-ed90-43ff-87ed-e4a150698ff4), [host tests](https://git.kayg.org/attachments/2d7df5eb-a7c3-4de9-a262-29560b876314), [integration](https://git.kayg.org/attachments/a6b487b8-91b0-4dd6-8b17-bc154d0e48fe). Marker detector failed inside large/fragmented flood frames before the fix and now passes all three cases: [red](https://git.kayg.org/attachments/d4aff01c-bc91-4409-874b-b3c8ace092ac), [green](https://git.kayg.org/attachments/854bcc1b-29b0-459f-84aa-2577a3357f85). Milestone scripts/verify iterate passed all Rust and TypeScript checks; this is not the final gate: [complete output](https://git.kayg.org/attachments/340b7614-9ccf-4d81-bf95-06358ce20498). Branch-head scripts/verify fast is running. Indexed perf image rebuild/measurements pending; no new performance success claim yet. Production defaults unchanged, no deploy.
kayg commented 2026-10-14 05:52:48 +00:00
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Baseline advanced: rebased ppu-soak onto origin/process-per-user 5aeac62c03 before adding harness files. New driver uses frozen v1 sockets, a seeded 900/90/10 mix, 10-second host-resource/echo receipts, private PID-filtered tracefs wakeup counts, and explicit resource/echo admission tolerances. Six functional receipt/framing tests pass; no perf results yet. The memory test has a separate fixture-owned transient scope capped at current working set +5% (minimum 16 MiB); the driver stays outside that OOM domain. Whole-host state handoff remains absent upstream and will be a failed/unsupported row, not a descriptor-only success. Static research and standalone VT fuzz builds are running on the build host; no product file edited.

Baseline advanced: rebased ppu-soak onto origin/process-per-user 5aeac62c03a52b0dbe792f1af5e0a3d9d0b5acdc before adding harness files. New driver uses frozen v1 sockets, a seeded 900/90/10 mix, 10-second host-resource/echo receipts, private PID-filtered tracefs wakeup counts, and explicit resource/echo admission tolerances. Six functional receipt/framing tests pass; no perf results yet. The memory test has a separate fixture-owned transient scope capped at current working set +5% (minimum 16 MiB); the driver stays outside that OOM domain. Whole-host state handoff remains absent upstream and will be a failed/unsupported row, not a descriptor-only success. Static research and standalone VT fuzz builds are running on the build host; no product file edited.
kayg commented 2026-10-14 05:54:36 +00:00
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Finding: prototype branch advanced to 90c684a; reactor scheduling fix 9756dd77 is included. The production CLI has no available agent launch path yet: docs/CLI.md says the authenticated CLI device-session transport is not implemented, and crates/infraternal-agent/src/cli.rs marks agent up unavailable. I will report direct shim/host costs separately and identify the missing server/daemon layer rather than attribute an unmeasured process to it.

Finding: prototype branch advanced to 90c684a; reactor scheduling fix 9756dd77 is included. The production CLI has no available agent launch path yet: docs/CLI.md says the authenticated CLI device-session transport is not implemented, and crates/infraternal-agent/src/cli.rs marks agent up unavailable. I will report direct shim/host costs separately and identify the missing server/daemon layer rather than attribute an unmeasured process to it.
kayg commented 2026-10-14 05:57:28 +00:00
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Continuation start: ppu-soak at c36a6edf83; rebased checkpoint 26f92da8 onto origin/process-per-user 90c684a365. Read every comment on #205; no parent. Scope remains new reliability test/benchmark files only. Existing cfg(test) panic hook reused; whole-host D128 state handoff remains absent. Perf VM access succeeds; rebuilding exact research image before the 1000-terminal 2-hour run. No deploy.

Continuation start: ppu-soak at c36a6edf83e5832bcb19f256b026831416db110e; rebased checkpoint 26f92da8 onto origin/process-per-user 90c684a3654a4141a30c4661c48c1f1edc9b43d9. Read every comment on #205; no parent. Scope remains new reliability test/benchmark files only. Existing cfg(test) panic hook reused; whole-host D128 state handoff remains absent. Perf VM access succeeds; rebuilding exact research image before the 1000-terminal 2-hour run. No deploy.
kayg commented 2026-10-14 06:00:37 +00:00
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Step complete: a1e8cd71 (pushed to ppu-soak after rebasing onto 90c684a3). Echo detector searched only the retained 8-KiB suffix, causing false timeouts for markers earlier in burst frames. Regression failed in both full/split cases before fix; seven functional tests now pass. Product code unchanged. Exact research static build continues.

Step complete: a1e8cd71 (pushed to ppu-soak after rebasing onto 90c684a3). Echo detector searched only the retained 8-KiB suffix, causing false timeouts for markers earlier in burst frames. Regression failed in both full/split cases before fix; seven functional tests now pass. Product code unchanged. Exact research static build continues.
kayg commented 2026-10-14 06:05:17 +00:00
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Indexed reactor measurement (9756dd77 + same source through 90c684a3), perf VM 4 vCPU, Linux 6.12.111, static PIE SHA af6da9b4…, 22322672 bytes, 80x24, lock/private 5-GiB scope:

  • N=1000 host idle PSS 7184 KiB total / 7.184 KiB/session; light 10028 KiB / 10.028 KiB/session; idle 0 ticks and 0 switches over 5 s.
  • Five light rounds: 104 ticks (1.04 CPU s) in 7.129 s; repeat 150 ticks in 8.025 s. Initial full-scan prototype: 3857 ticks in 43.754 s. Indexing cuts that CPU cost about 96–97%; the default separate-shim light result remains lower at 41 ticks/7.266 s. Memory is much lower; CPU is not universally lower.
  • Sustained N=1000 flood: PSS 906572 KiB total / 906.572 KiB/session, plus shell PSS 2322601 KiB and generator PSS 120297 KiB. Logical 64-MiB ring/history caps are not physical allocator/page bounds.
  • Flood processed 331922788 output bytes in the 32.838-s setup+measurement window, using 3022 CPU ticks; generator startup is included. Short flood timing sample (3 values only, report maximum rather than statistical p99): Hello max 12.183 ms, snapshot max 9.161 ms, same-PTY printf confirmation max 3139.900 ms. This overload result does not meet the 5-ms echo budget and is not a healthy typing claim.
  • After generators stopped, 1000 samples: Hello p50/p99 0.149/0.822 ms; snapshot 0.194/0.862; echo 0.236/1.076. Default N=1000 settled echo 0.391/1.278 ms from the initial sequential matrix, not a balanced A/B conclusion.
    The long flood sample exceeded the run timeout; shortened sampling completed. A repeated wrapper interrupt interrupted cleanup in that earlier attempt; no fixture hosts remained when checked by exact executable identity. The harness now masks repeated interrupts during owned-PID cleanup and records its fixture PIDs. Remaining indexed scales and final fast gate still running. No default switch or deploy.
Indexed reactor measurement (9756dd77 + same source through 90c684a3), perf VM 4 vCPU, Linux 6.12.111, static PIE SHA af6da9b4…, 22322672 bytes, 80x24, lock/private 5-GiB scope: - N=1000 host idle PSS 7184 KiB total / 7.184 KiB/session; light 10028 KiB / 10.028 KiB/session; idle 0 ticks and 0 switches over 5 s. - Five light rounds: 104 ticks (1.04 CPU s) in 7.129 s; repeat 150 ticks in 8.025 s. Initial full-scan prototype: 3857 ticks in 43.754 s. Indexing cuts that CPU cost about 96–97%; the default separate-shim light result remains lower at 41 ticks/7.266 s. Memory is much lower; CPU is not universally lower. - Sustained N=1000 flood: PSS 906572 KiB total / 906.572 KiB/session, plus shell PSS 2322601 KiB and generator PSS 120297 KiB. Logical 64-MiB ring/history caps are not physical allocator/page bounds. - Flood processed 331922788 output bytes in the 32.838-s setup+measurement window, using 3022 CPU ticks; generator startup is included. Short flood timing sample (3 values only, report maximum rather than statistical p99): Hello max 12.183 ms, snapshot max 9.161 ms, same-PTY printf confirmation max 3139.900 ms. This overload result does not meet the 5-ms echo budget and is not a healthy typing claim. - After generators stopped, 1000 samples: Hello p50/p99 0.149/0.822 ms; snapshot 0.194/0.862; echo 0.236/1.076. Default N=1000 settled echo 0.391/1.278 ms from the initial sequential matrix, not a balanced A/B conclusion. The long flood sample exceeded the run timeout; shortened sampling completed. A repeated wrapper interrupt interrupted cleanup in that earlier attempt; no fixture hosts remained when checked by exact executable identity. The harness now masks repeated interrupts during owned-PID cleanup and records its fixture PIDs. Remaining indexed scales and final fast gate still running. No default switch or deploy.
kayg commented 2026-10-14 06:13:47 +00:00
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Step complete: 925cf1ff, pushed. New crates/infraternal-shim/tests/ppu_reliability.rs reuses run_host, real PTYs, frozen frames and the existing isolated shell profile. 2 passed / 0 failed / 1 subprocess-only entry ignored; feature all-target Clippy and fmt pass. SIGKILL victim reports Exited(-9); ignored SIGHUP and corpus/OSC/CSI/UTF-8 leave both-session input responsive. These are functional build-host checks, not performance evidence. Static research and musl panic-fixture builds are ready; driver smoke phases now run under the perf lock.

reliability-tests-final.log
reliability-clippy-final.log
marker-red.log
marker-green.log

Step complete: 925cf1ff, pushed. New crates/infraternal-shim/tests/ppu_reliability.rs reuses run_host, real PTYs, frozen frames and the existing isolated shell profile. 2 passed / 0 failed / 1 subprocess-only entry ignored; feature all-target Clippy and fmt pass. SIGKILL victim reports Exited(-9); ignored SIGHUP and corpus/OSC/CSI/UTF-8 leave both-session input responsive. These are functional build-host checks, not performance evidence. Static research and musl panic-fixture builds are ready; driver smoke phases now run under the perf lock. [reliability-tests-final.log](https://git.kayg.org/attachments/19cfa3ad-d7f4-49b8-92c3-16edad643562) [reliability-clippy-final.log](https://git.kayg.org/attachments/62849725-063c-4d00-a3aa-95170692ebfb) [marker-red.log](https://git.kayg.org/attachments/863841b1-650a-464b-a565-c8cea5fcc35b) [marker-green.log](https://git.kayg.org/attachments/95e2b6af-a522-4f16-a8db-5efe74eaa00d)
kayg commented 2026-10-14 06:14:04 +00:00
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Head 12f657f7: completed indexed-reactor matrix, opt-in only. Host PSS KiB/session idle/light/sustained flood: N=1 5088/5092/33244; N=10 510.4/513.6/17862.4; N=100 53.04/56.36/2090.68; N=1000 7.184/10.028/906.572 (previous attached complete receipt). Every idle window: 0 CPU ticks, 0 context switches over 5 seconds. Machine/load/image digest and shell/generator PSS are in receipts. These exclude shell/kernel costs and do not establish a physical memory ceiling.

1 10 100

Default N=1000 sustained flood capacity trial exited 137: fixture scope run-p525308-i525608.scope reports oom-kill and 5G memory peak. Idle/light host PSS 1120.680/1142.784 KiB/session; light 41 ticks/7.413 seconds. No steady flood sample survived; the earlier default 1000 finite-burst row is not an equivalent worst case. The pooled case completed under the same 5-GiB scope ceiling, with smaller ring/history retention. Do not attribute all flood savings to process sharing; equal-retention ablation remains an adoption requirement.

capacity raw scope OOM record

Repeated baseline/host/host/baseline latency fixtures are running separately from memory fixtures. Full final gate is building static ARM; x86 default image already exceeds the existing D243 cap by 71,584 bytes. A detached task-base build will establish attribution; no ceiling changes.

Head 12f657f7: completed indexed-reactor matrix, opt-in only. Host PSS KiB/session idle/light/sustained flood: N=1 5088/5092/33244; N=10 510.4/513.6/17862.4; N=100 53.04/56.36/2090.68; N=1000 7.184/10.028/906.572 (previous attached complete receipt). Every idle window: 0 CPU ticks, 0 context switches over 5 seconds. Machine/load/image digest and shell/generator PSS are in receipts. These exclude shell/kernel costs and do not establish a physical memory ceiling. [1](https://git.kayg.org/attachments/a70f9bf1-af71-4723-b801-ceb3b1019aaa) [10](https://git.kayg.org/attachments/d1352977-ccd4-4590-aa1b-47386e04d892) [100](https://git.kayg.org/attachments/7401a31f-ba74-4792-b96a-35103d10d70f) Default N=1000 sustained flood capacity trial exited 137: fixture scope run-p525308-i525608.scope reports oom-kill and 5G memory peak. Idle/light host PSS 1120.680/1142.784 KiB/session; light 41 ticks/7.413 seconds. No steady flood sample survived; the earlier default 1000 finite-burst row is not an equivalent worst case. The pooled case completed under the same 5-GiB scope ceiling, with smaller ring/history retention. Do not attribute all flood savings to process sharing; equal-retention ablation remains an adoption requirement. [capacity raw](https://git.kayg.org/attachments/ca1a5a9b-dcb9-4135-ae5d-2125a88b9388) [scope OOM record](https://git.kayg.org/attachments/51904368-2590-4ee3-bd3d-82581189f85e) Repeated baseline/host/host/baseline latency fixtures are running separately from memory fixtures. Full final gate is building static ARM; x86 default image already exceeds the existing D243 cap by 71,584 bytes. A detached task-base build will establish attribution; no ceiling changes.
kayg commented 2026-10-14 06:16:35 +00:00
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Correction to my earlier runtime note: the production server path is present. crates/infraternal-server/src/runtime.rs:550-559 starts an embedded infraternal agent when none is supplied, and runtime.rs:628 merges websocket::router; crates/infraternal-server/src/websocket.rs:291-295 mounts /v1/ws. I’m using this authenticated WebSocket path for viewer attach/echo measurements; isolated shim rows will continue to report their own boundary separately.

Correction to my earlier runtime note: the production server path is present. `crates/infraternal-server/src/runtime.rs:550-559` starts an embedded infraternal agent when none is supplied, and `runtime.rs:628` merges `websocket::router`; `crates/infraternal-server/src/websocket.rs:291-295` mounts `/v1/ws`. I’m using this authenticated WebSocket path for viewer attach/echo measurements; isolated shim rows will continue to report their own boundary separately.
kayg commented 2026-10-14 06:19:30 +00:00
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Author checklist at 12f657f7 (research, not production adoption): unchanged frame decoder and peer-auth handlers reused; no new parser, dependency or foundation choice. Existing shim_frame_decode fuzz target still covers frames. Real-PTY and infraternal-agent tests cover two session IDs sharing one Hello PID, independent exits, resize/snapshot and retained writer cursor. Rust-panic containment and fd-reuse checks pass; native fault/OOM containment is explicitly absent. Descriptor transfer tests cover all 130 masters across batches, CLOEXEC and oversized/credential ancillary refusal with no FD-count growth (red-to-green receipts already attached).

Adoption gaps retained in research/process-per-user/README.md: trusted rootful expected-UID launch/discovery binding; real D240/D247 person/PAM unit integration; person-scoped route/cgroup revocation; exact whole-host state/FD commit and child-status ownership; nonblocking child reaping; native resize-failure allocation abandonment; aggregate peer/input limits; equal-retention memory ablation. No claim of hot host replacement, arbitrary UID authorization, total RSS bound or meeting the flood typing budget. D13 default remains unchanged; D198 adoption belongs in the SSH plugin's action/lifecycle surface. Independent break-it review remains required before adoption.

Author checklist at 12f657f7 (research, not production adoption): unchanged frame decoder and peer-auth handlers reused; no new parser, dependency or foundation choice. Existing shim_frame_decode fuzz target still covers frames. Real-PTY and infraternal-agent tests cover two session IDs sharing one Hello PID, independent exits, resize/snapshot and retained writer cursor. Rust-panic containment and fd-reuse checks pass; native fault/OOM containment is explicitly absent. Descriptor transfer tests cover all 130 masters across batches, CLOEXEC and oversized/credential ancillary refusal with no FD-count growth (red-to-green receipts already attached). Adoption gaps retained in research/process-per-user/README.md: trusted rootful expected-UID launch/discovery binding; real D240/D247 person/PAM unit integration; person-scoped route/cgroup revocation; exact whole-host state/FD commit and child-status ownership; nonblocking child reaping; native resize-failure allocation abandonment; aggregate peer/input limits; equal-retention memory ablation. No claim of hot host replacement, arbitrary UID authorization, total RSS bound or meeting the flood typing budget. D13 default remains unchanged; D198 adoption belongs in the SSH plugin's action/lifecycle surface. Independent break-it review remains required before adoption.
kayg commented 2026-10-14 06:25:08 +00:00
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Prototype boundary finding: the process-per-user branch exposes its shared host only through the hidden research-only __shim --host-sessions path (crates/infraternal/src/user_host_cli.rs:1, crates/infraternal/src/cli/actions.rs:264-265). The server's embedded agent is started separately by EmbeddedAgent::spawn (crates/infraternal-server/src/runtime.rs:550-559); no server terminal-open path currently selects the research host. I’ll report prototype rows as standalone host costs with direct UNIX viewer measurements, and production rows as server + embedded agent + per-session shims with the authenticated WebSocket viewer.

Prototype boundary finding: the `process-per-user` branch exposes its shared host only through the hidden research-only `__shim --host-sessions` path (`crates/infraternal/src/user_host_cli.rs:1`, `crates/infraternal/src/cli/actions.rs:264-265`). The server's embedded agent is started separately by `EmbeddedAgent::spawn` (`crates/infraternal-server/src/runtime.rs:550-559`); no server terminal-open path currently selects the research host. I’ll report prototype rows as standalone host costs with direct UNIX viewer measurements, and production rows as server + embedded agent + per-session shims with the authenticated WebSocket viewer.
kayg commented 2026-10-14 06:25:32 +00:00
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Finding: replacing the dynamic Mesh Vec builders with compact index rows reduced .data.rel.ro by 4,128 bytes and .relr.dyn by 56 bytes, but the production binary is still 3,424 bytes larger than origin/dev (.text +5,824 bytes). I’m extending the same representation to larger plugin action tables so the relocation savings can amortize the builder code; I have not accepted this candidate or run its perf measurements.

Evidence: compact-candidate-size.txt

Finding: replacing the dynamic Mesh `Vec` builders with compact index rows reduced `.data.rel.ro` by 4,128 bytes and `.relr.dyn` by 56 bytes, but the production binary is still 3,424 bytes larger than origin/dev (`.text` +5,824 bytes). I’m extending the same representation to larger plugin action tables so the relocation savings can amortize the builder code; I have not accepted this candidate or run its perf measurements. Evidence: [compact-candidate-size.txt](https://git.kayg.org/attachments/9d6278eb-3b45-4dbe-8af6-cd159d20c8fc)
kayg commented 2026-10-14 06:25:41 +00:00
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Findings from initial smoke image 59fabf3a47ba116014d5ab8bac189f7f4c5ee1a36fbb0d6470f80e453e16aed8 on infraternal-perf-test, shared lock, 4 vCPU:

  • Tight memory cap: working set 51,179,520 bytes; cap 67,956,736 bytes. 32-MiB OSC output caused cgroup memory.events max=18, oom=1, oom_kill=1; host disappeared and sibling input failed. This is a genuine isolation failure; retaining as an executable failing regression.
  • Fixture failures: daemon census legitimately replaced legacy writer zero; harness now negotiates a private durable writer (red/green regression). Async Unix connect needs str(path), not Path. Existing cfg(test) panic fixture needs its conventional scratch parent staged on the VM. These are fixture errors, not product failures.
  • 90-second/20-session warmup smoke admission failed; it is NOT two-hour stability evidence. Raw full-duration run is now queued, 1000 terminals / 7200 seconds / 600-second warmup / 10-second samples, exact product source 90c684a3. Binary and driver digests are recorded. Whole-host upgrade adapter remains absent.
    memory.log
    writer-red.log
    writer-green.log
Findings from initial smoke image 59fabf3a47ba116014d5ab8bac189f7f4c5ee1a36fbb0d6470f80e453e16aed8 on infraternal-perf-test, shared lock, 4 vCPU: - Tight memory cap: working set 51,179,520 bytes; cap 67,956,736 bytes. 32-MiB OSC output caused cgroup memory.events max=18, oom=1, oom_kill=1; host disappeared and sibling input failed. This is a genuine isolation failure; retaining as an executable failing regression. - Fixture failures: daemon census legitimately replaced legacy writer zero; harness now negotiates a private durable writer (red/green regression). Async Unix connect needs str(path), not Path. Existing cfg(test) panic fixture needs its conventional scratch parent staged on the VM. These are fixture errors, not product failures. - 90-second/20-session warmup smoke admission failed; it is NOT two-hour stability evidence. Raw full-duration run is now queued, 1000 terminals / 7200 seconds / 600-second warmup / 10-second samples, exact product source 90c684a3. Binary and driver digests are recorded. Whole-host upgrade adapter remains absent. [memory.log](https://git.kayg.org/attachments/a218e81e-276e-454f-bd03-62609e83fe49) [writer-red.log](https://git.kayg.org/attachments/387550d9-2153-4c9e-a93d-c291ba67a610) [writer-green.log](https://git.kayg.org/attachments/82d67a51-9188-4377-b113-8e0b926d0b24)
kayg commented 2026-10-14 06:30:22 +00:00
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Comparison engine verified: perf VM distro /usr/bin/tmux is 3.5a; I built the latest official release, tmux 3.8 tag 7f2a35a, from source (src/tmux-3.8.tar.gz SHA-256 e79c699c7e949dccd0a4a125e17b8d1261e311b16979dbc8eb34542f3966d82e). Built binary SHA-256 d4aad9154b146dd466b5802e0b8cf4d06c277c1169897abc8de32a367b181ca4. Official release listing: https://github.com/tmux/tmux/releases/tag/3.8. Rows are waiting for the shared perf VM lock; no measurements reported yet.

Comparison engine verified: perf VM distro `/usr/bin/tmux` is 3.5a; I built the latest official release, tmux 3.8 tag `7f2a35a`, from source (`src/tmux-3.8.tar.gz` SHA-256 `e79c699c7e949dccd0a4a125e17b8d1261e311b16979dbc8eb34542f3966d82e`). Built binary SHA-256 `d4aad9154b146dd466b5802e0b8cf4d06c277c1169897abc8de32a367b181ca4`. Official release listing: https://github.com/tmux/tmux/releases/tag/3.8. Rows are waiting for the shared perf VM lock; no measurements reported yet.
kayg commented 2026-10-14 06:37:13 +00:00
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Finding: At 2026-10-14 06:36 UTC, /proc/locks showed perf-bench.lock held by PID 562360 for ppu-soak-full1 (7200 s workload); this row had run 11 min. Seven measurement jobs were ahead of our tmux smoke row (PID 575075). Perf VM load average was 5.36. No benchmark row has started and no product files changed.

Finding: At 2026-10-14 06:36 UTC, /proc/locks showed perf-bench.lock held by PID 562360 for ppu-soak-full1 (7200 s workload); this row had run 11 min. Seven measurement jobs were ahead of our tmux smoke row (PID 575075). Perf VM load average was 5.36. No benchmark row has started and no product files changed.
kayg commented 2026-10-14 06:39:27 +00:00
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Step complete: origin/dev 97366a3b64 built as stripped static x86_64-musl infraternal (22,275,888 bytes, SHA-256 2706787183c7fade21f05faeea106419dddcf3ed11926514966108143bf19081). The perf VM copy has the same SHA-256. The process-per-user 12f657f7 feature binary is staged separately for standalone host rows. No repository files changed.

Step complete: origin/dev 97366a3b645905fbb3a47ebea81de27f69017e78 built as stripped static x86_64-musl `infraternal` (22,275,888 bytes, SHA-256 `2706787183c7fade21f05faeea106419dddcf3ed11926514966108143bf19081`). The perf VM copy has the same SHA-256. The process-per-user 12f657f7 feature binary is staged separately for standalone host rows. No repository files changed.
kayg commented 2026-10-14 06:40:17 +00:00
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Repeated local-shim latency at 12f657f7, perf VM, static image digests and per-phase load in raw matrix. Baseline/host/host/baseline order is complete at 1/10/100; N=1000 has baseline/host/host complete, final baseline still waiting for the shared lock. Fresh latency fixtures are separate from memory fixtures. Each idle/light/settled row has 1000 Hello, approximate snapshot and generated printf confirmation samples per repeat. Values below are ranges of each repeat's p99 in milliseconds, not pooled percentiles. No browser/network latency claim.

N mode phase Hello p99 ms snapshot p99 ms echo p99 ms
1 baseline idle 0.471–1.089 0.447–0.809 1.761–7.981
1 baseline light 0.857–1.247 1.219–1.899 0.635–2.277
1 baseline settled 0.562–0.986 0.538–0.683 1.648–2.114
1 host idle 0.738–1.312 0.587–1.245 3.182–4.860
1 host light 0.801–1.401 0.696–1.325 1.574–6.604
1 host settled 0.687–1.113 0.564–0.826 1.452–3.487
10 baseline idle 0.552–0.710 0.430–0.500 1.054–1.678
10 baseline light 0.858–1.230 1.345–2.011 0.804–2.375
10 baseline settled 0.521–0.906 0.751–0.985 1.116–1.283
10 host idle 0.682–1.212 0.432–1.169 1.160–1.532
10 host light 1.013–1.088 0.762–1.063 1.041–1.587
10 host settled 0.697–3.034 0.725–1.733 1.068–1.368
100 baseline idle 0.585–1.265 0.363–1.604 1.124–1.512
100 baseline light 0.451–0.972 0.467–1.182 1.229–1.355
100 baseline settled 0.498–2.256 0.734–1.594 1.202–4.449
100 host idle 0.661–2.296 0.539–1.973 0.986–1.530
100 host light 0.580–1.430 0.599–1.240 1.109–1.120
100 host settled 0.462–0.793 0.426–0.704 1.040–1.543
1000 baseline idle 0.582 (one repeat) 0.426 (one repeat) 1.603 (one repeat)
1000 baseline light 0.518 (one repeat) 0.605 (one repeat) 1.541 (one repeat)
1000 baseline settled 0.688 (one repeat) 0.992 (one repeat) 1.808 (one repeat)
1000 host idle 0.620–0.900 0.440–0.892 1.228–1.339
1000 host light 0.377–1.305 0.434–1.274 0.863–2.629
1000 host settled 0.444–1.669 0.459–1.228 1.268–1.824

Sustained all-session flood printf-confirmation maxima (31 samples/repeat at N<=100, only 3 at N=1000; maxima are not a credible p99): baseline/host N=1 7.576–8.971 / 7.144–11.170 ms; N=10 75.116–123.849 / 51.214–64.490 ms; N=100 403.680–720.707 / 365.482–507.084 ms; host N=1000 3199.941–4464.052 ms. Baseline N=1000 latency uses a finite burst and samples after flooding stops, so its sub-ms short row is NOT comparable; sustained capacity trial OOMed at 5 GiB as separately recorded. Both layouts miss the 5-ms echo target under sustained flood. No consistent idle/light latency win; memory saving is the clearest benefit, and smaller retention budgets confound the flood memory comparison.

Final TypeScript checks separately passed, including 37 protocol tests / 0 failures / 34463 assertions: complete TS gate. Full fast gate static-size failures are being attributed against the task-base image; no cap raised.

Repeated local-shim latency at 12f657f7, perf VM, static image digests and per-phase load in [raw matrix](https://git.kayg.org/attachments/3edb0307-7abb-42a5-83aa-f8abb1a9edb7). Baseline/host/host/baseline order is complete at 1/10/100; N=1000 has baseline/host/host complete, final baseline still waiting for the shared lock. Fresh latency fixtures are separate from memory fixtures. Each idle/light/settled row has 1000 Hello, approximate snapshot and generated printf confirmation samples per repeat. Values below are ranges of each repeat's p99 in milliseconds, not pooled percentiles. No browser/network latency claim. | N | mode | phase | Hello p99 ms | snapshot p99 ms | echo p99 ms | |---|---|---|---|---|---| | 1 | baseline | idle | 0.471–1.089 | 0.447–0.809 | 1.761–7.981 | | 1 | baseline | light | 0.857–1.247 | 1.219–1.899 | 0.635–2.277 | | 1 | baseline | settled | 0.562–0.986 | 0.538–0.683 | 1.648–2.114 | | 1 | host | idle | 0.738–1.312 | 0.587–1.245 | 3.182–4.860 | | 1 | host | light | 0.801–1.401 | 0.696–1.325 | 1.574–6.604 | | 1 | host | settled | 0.687–1.113 | 0.564–0.826 | 1.452–3.487 | | 10 | baseline | idle | 0.552–0.710 | 0.430–0.500 | 1.054–1.678 | | 10 | baseline | light | 0.858–1.230 | 1.345–2.011 | 0.804–2.375 | | 10 | baseline | settled | 0.521–0.906 | 0.751–0.985 | 1.116–1.283 | | 10 | host | idle | 0.682–1.212 | 0.432–1.169 | 1.160–1.532 | | 10 | host | light | 1.013–1.088 | 0.762–1.063 | 1.041–1.587 | | 10 | host | settled | 0.697–3.034 | 0.725–1.733 | 1.068–1.368 | | 100 | baseline | idle | 0.585–1.265 | 0.363–1.604 | 1.124–1.512 | | 100 | baseline | light | 0.451–0.972 | 0.467–1.182 | 1.229–1.355 | | 100 | baseline | settled | 0.498–2.256 | 0.734–1.594 | 1.202–4.449 | | 100 | host | idle | 0.661–2.296 | 0.539–1.973 | 0.986–1.530 | | 100 | host | light | 0.580–1.430 | 0.599–1.240 | 1.109–1.120 | | 100 | host | settled | 0.462–0.793 | 0.426–0.704 | 1.040–1.543 | | 1000 | baseline | idle | 0.582 (one repeat) | 0.426 (one repeat) | 1.603 (one repeat) | | 1000 | baseline | light | 0.518 (one repeat) | 0.605 (one repeat) | 1.541 (one repeat) | | 1000 | baseline | settled | 0.688 (one repeat) | 0.992 (one repeat) | 1.808 (one repeat) | | 1000 | host | idle | 0.620–0.900 | 0.440–0.892 | 1.228–1.339 | | 1000 | host | light | 0.377–1.305 | 0.434–1.274 | 0.863–2.629 | | 1000 | host | settled | 0.444–1.669 | 0.459–1.228 | 1.268–1.824 | Sustained all-session flood printf-confirmation maxima (31 samples/repeat at N<=100, only 3 at N=1000; maxima are not a credible p99): baseline/host N=1 7.576–8.971 / 7.144–11.170 ms; N=10 75.116–123.849 / 51.214–64.490 ms; N=100 403.680–720.707 / 365.482–507.084 ms; host N=1000 3199.941–4464.052 ms. Baseline N=1000 latency uses a finite burst and samples after flooding stops, so its sub-ms short row is NOT comparable; sustained capacity trial OOMed at 5 GiB as separately recorded. Both layouts miss the 5-ms echo target under sustained flood. No consistent idle/light latency win; memory saving is the clearest benefit, and smaller retention budgets confound the flood memory comparison. Final TypeScript checks separately passed, including 37 protocol tests / 0 failures / 34463 assertions: [complete TS gate](https://git.kayg.org/attachments/f9e6f6ff-f932-4a44-befa-1dd8559b710e). Full fast gate static-size failures are being attributed against the task-base image; no cap raised.
kayg commented 2026-10-14 06:41:44 +00:00
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Finding: The perf VM reports perf_event_paranoid=3; command -v perf returned no path, and /proc/1/sched exposes nr_switches but no wakeup counter. Raw rows now record CPU seconds, schedstat run slices/s, and voluntary+involuntary context switches/s separately; direct sched_wakeup counts are unavailable, so no proxy is labeled wakeups. No host scheduler settings were changed.

Finding: The perf VM reports `perf_event_paranoid=3`; `command -v perf` returned no path, and `/proc/1/sched` exposes `nr_switches` but no wakeup counter. Raw rows now record CPU seconds, schedstat run slices/s, and voluntary+involuntary context switches/s separately; direct `sched_wakeup` counts are unavailable, so no proxy is labeled wakeups. No host scheduler settings were changed.
kayg commented 2026-10-14 06:43:49 +00:00
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Continuation start: ppu-soak at 60f6d0db; merge base origin/dev b182529fcc. Read all 84 comments on #205; no parent is recorded. Previous full1 soak stopped at 410 seconds with BrokenPipeError, not a completed two-hour run. Continuing process-event checks and diagnosing fixture failure; test/bench changes only, no terminal-output content checks, no deployment. Perf VM 10.69.69.208 is explicitly authorised by this brief.

Continuation start: ppu-soak at 60f6d0db; merge base origin/dev b182529fcc38ed65c53ad323b55e444beaa4e2a7. Read all 84 comments on #205; no parent is recorded. Previous full1 soak stopped at 410 seconds with BrokenPipeError, not a completed two-hour run. Continuing process-event checks and diagnosing fixture failure; test/bench changes only, no terminal-output content checks, no deployment. Perf VM 10.69.69.208 is explicitly authorised by this brief.
kayg commented 2026-10-14 06:44:44 +00:00
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Finding: The first tmux smoke reached the lock but systemd-run exited before starting it with Unknown assignment: LimitNOFILE=16384; the raw JSON remained 0 bytes and the remote fixture state was cleaned. I removed all extra unit properties, retained the required CPUWeight=10000, and moved the 16,384-FD limit into the isolated shell. The same smoke row is queued again; no performance data came from the failed attempt.

Finding: The first tmux smoke reached the lock but systemd-run exited before starting it with `Unknown assignment: LimitNOFILE=16384`; the raw JSON remained 0 bytes and the remote fixture state was cleaned. I removed all extra unit properties, retained the required `CPUWeight=10000`, and moved the 16,384-FD limit into the isolated shell. The same smoke row is queued again; no performance data came from the failed attempt.
kayg commented 2026-10-14 06:45:21 +00:00
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Finding: After the scope launched successfully, the smoke failed before sampling with AttributeError: TmuxBackend has no attribute snapshot_processes at matrix.py:609. ShimBackend already implements this via sample_processes(self.pids); TmuxBackend.pids contains the single server PID. Cleanup removed the state directory and no tmux process remained. I added the equivalent snapshot method and am retrying the same row.

Finding: After the scope launched successfully, the smoke failed before sampling with `AttributeError: TmuxBackend has no attribute snapshot_processes` at `matrix.py:609`. `ShimBackend` already implements this via `sample_processes(self.pids)`; `TmuxBackend.pids` contains the single server PID. Cleanup removed the state directory and no tmux process remained. I added the equivalent snapshot method and am retrying the same row.
kayg commented 2026-10-14 06:45:47 +00:00
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Step complete: tmux 3.8 (official tag 7f2a35a), 80x24, built-in defaults plus history-limit 10000, one idle sh -c 'exec sleep inf' terminal. Server-only PSS 2,580 KiB; Private_Dirty 1,140 KiB; shells and viewers excluded. Perf VM: 4 vCPU, Intel i9-9900K; CPUWeight=10000; sample load average 2.79 / 3.79 / 4.76. Global PTY count 0→1; cgroup kernel 380,928 B and slab 124,080 B (cgroup totals include the shell and harness). Raw JSON: chart_start_empty_tmux.json.

Step complete: tmux 3.8 (official tag 7f2a35a), 80x24, built-in defaults plus `history-limit 10000`, one idle `sh -c 'exec sleep inf'` terminal. Server-only PSS 2,580 KiB; Private_Dirty 1,140 KiB; shells and viewers excluded. Perf VM: 4 vCPU, Intel i9-9900K; CPUWeight=10000; sample load average 2.79 / 3.79 / 4.76. Global PTY count 0→1; cgroup kernel 380,928 B and slab 124,080 B (cgroup totals include the shell and harness). Raw JSON: [chart_start_empty_tmux.json](https://git.kayg.org/attachments/00a4b9e8-e163-4165-a2d2-fe428eb7db04).
kayg commented 2026-10-14 06:46:22 +00:00
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All 16 ordered baseline/host/host/baseline latency repeats completed at 1/10/100/1000 sessions. Complete raw matrix supersedes the previous 15-receipt matrix. N=1000 baseline repeat A2 p99 Hello/snapshot/echo ms: idle 0.639/0.444/0.955; light 1.808/1.680/2.747; settled 0.584/0.986/1.481. Idle echo p99 across both repeats: baseline 0.955–1.603 ms; host 1.228–1.339 ms. Light: baseline 1.541–2.747; host 0.863–2.629. Settled: baseline 1.481–1.808; host 1.268–1.824. Snapshot replies explicitly negotiated approximation. No consistent latency win. Sustained pooled flood remains seconds, and the sustained default 1000 capacity trial OOMed, so finite/post-burst default timing is not an equivalent overload comparison.

Owned fixture cleanup: exact job-image process census reports fixture_host_pids []; no process belonging to another job was stopped.

Full fast gate exited 1: default x86 size 22,275,888 vs D243 cap 22,204,304 (+71,584); default ARM 19,704,712 vs 19,638,744 (+65,968). Both static linkage checks pass, x86 locked-memory probe passes; ARM runtime probe explicitly not run on x86. The size-fixture assertion consequently fails too. Every non-static Rust gate row passes; separately every final TS check passes. Full fast output. Task-base static x86 comparison is still compiling; no cap changed, no default switch, no deployment.

All 16 ordered baseline/host/host/baseline latency repeats completed at 1/10/100/1000 sessions. [Complete raw matrix](https://git.kayg.org/attachments/bb291ce1-d143-4089-8472-9265994aaf25) supersedes the previous 15-receipt matrix. N=1000 baseline repeat A2 p99 Hello/snapshot/echo ms: idle 0.639/0.444/0.955; light 1.808/1.680/2.747; settled 0.584/0.986/1.481. Idle echo p99 across both repeats: baseline 0.955–1.603 ms; host 1.228–1.339 ms. Light: baseline 1.541–2.747; host 0.863–2.629. Settled: baseline 1.481–1.808; host 1.268–1.824. Snapshot replies explicitly negotiated approximation. No consistent latency win. Sustained pooled flood remains seconds, and the sustained default 1000 capacity trial OOMed, so finite/post-burst default timing is not an equivalent overload comparison. [Owned fixture cleanup](https://git.kayg.org/attachments/7da84c0e-cf52-4304-9bf8-aebf6988fcc6): exact job-image process census reports fixture_host_pids []; no process belonging to another job was stopped. Full fast gate exited 1: default x86 size 22,275,888 vs D243 cap 22,204,304 (+71,584); default ARM 19,704,712 vs 19,638,744 (+65,968). Both static linkage checks pass, x86 locked-memory probe passes; ARM runtime probe explicitly not run on x86. The size-fixture assertion consequently fails too. Every non-static Rust gate row passes; separately every final TS check passes. [Full fast output](https://git.kayg.org/attachments/e4c50df9-8760-473e-ba81-2761b2497ec0). Task-base static x86 comparison is still compiling; no cap changed, no default switch, no deployment.
kayg commented 2026-10-14 06:46:41 +00:00
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Finding: The production row failed during auth setup with TypeError: 'NoneType' object is not callable at server_matrix.py:358: self.cookie = None shadowed the @staticmethod cookie() parser before bootstrap_owner() called it. The failed row wrote 0 bytes; no infra-dev process remained and its fixture directory was removed. Renamed the helper to extract_cookie() and am retrying the same one-session row. The cookie value remains in memory only.

Finding: The production row failed during auth setup with `TypeError: 'NoneType' object is not callable` at `server_matrix.py:358`: `self.cookie = None` shadowed the `@staticmethod cookie()` parser before `bootstrap_owner()` called it. The failed row wrote 0 bytes; no `infra-dev` process remained and its fixture directory was removed. Renamed the helper to `extract_cookie()` and am retrying the same one-session row. The cookie value remains in memory only.
kayg commented 2026-10-14 06:49:32 +00:00
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Steps pushed: 5c49b2d5 matches the D270 soak mix (seq bursts, absolute one-second pacing, final all-session input census); 6c88ff94 selects process events without parser-content phases. Python fixture tests: 10 passed; cargo fmt passed. Exact static research image source remains 90c684a3, SHA-256 59fabf3a47ba116014d5ab8bac189f7f4c5ee1a36fbb0d6470f80e453e16aed8.

Perf VM process events under shared lock, 4 vCPU, initial load 1.88/3.32/4.54:

Check Expected Observed Result
Infraternal-agent restart Census retains all IDs; every session accepts input 1000 sessions responsive after real daemon restart PASS
Shell SIGKILL Exited(-9); every sibling accepts input 999 siblings responsive PASS
Shell ignores SIGHUP Shell and siblings responsive 999 live sessions responsive PASS; explicit child fixture still to add
Live open-file limit Existing input works at EMFILE; refused peers do not leak 999 sessions responsive; fd count returned PASS
Startup open-file limit Clean bounded refusal exit=1, no session sockets PASS
Busy D128 whole-host upgrade State and shells survive handoff adapter unimplemented; 999 sessions responsive before attempted gate FAIL (expected red)

process-events.log samples.jsonl.txt

Earlier full1 run: 41 ten-second rows through 410 seconds, then BrokenPipeError. No settled two-hour claim; raw receipt: samples.jsonl.txt. Corrected long2 run is now active (1000 sessions, 7200 seconds, 600-second warm-up).

Full verify fast attempt stopped at RTT self-test: latency proxy: configured 300 ms RTT did not arrive: p50=335.17 ms p99=485.46 ms. Not waived. verify-fast-continuation.log

Steps pushed: 5c49b2d5 matches the D270 soak mix (seq bursts, absolute one-second pacing, final all-session input census); 6c88ff94 selects process events without parser-content phases. Python fixture tests: 10 passed; cargo fmt passed. Exact static research image source remains 90c684a3, SHA-256 59fabf3a47ba116014d5ab8bac189f7f4c5ee1a36fbb0d6470f80e453e16aed8. Perf VM process events under shared lock, 4 vCPU, initial load 1.88/3.32/4.54: | Check | Expected | Observed | Result | |---|---|---|---| | Infraternal-agent restart | Census retains all IDs; every session accepts input | 1000 sessions responsive after real daemon restart | PASS | | Shell SIGKILL | Exited(-9); every sibling accepts input | 999 siblings responsive | PASS | | Shell ignores SIGHUP | Shell and siblings responsive | 999 live sessions responsive | PASS; explicit child fixture still to add | | Live open-file limit | Existing input works at EMFILE; refused peers do not leak | 999 sessions responsive; fd count returned | PASS | | Startup open-file limit | Clean bounded refusal | exit=1, no session sockets | PASS | | Busy D128 whole-host upgrade | State and shells survive handoff | adapter unimplemented; 999 sessions responsive before attempted gate | FAIL (expected red) | [process-events.log](https://git.kayg.org/attachments/45d4f592-4017-4883-a31a-081736b348e1) [samples.jsonl.txt](https://git.kayg.org/attachments/b8d45efe-290e-4b7a-b423-64d0f7b97e78) Earlier full1 run: 41 ten-second rows through 410 seconds, then BrokenPipeError. No settled two-hour claim; raw receipt: [samples.jsonl.txt](https://git.kayg.org/attachments/3beac022-994e-4f44-b633-096c1fd273d6). Corrected long2 run is now active (1000 sessions, 7200 seconds, 600-second warm-up). Full verify fast attempt stopped at RTT self-test: `latency proxy: configured 300 ms RTT did not arrive: p50=335.17 ms p99=485.46 ms`. Not waived. [verify-fast-continuation.log](https://git.kayg.org/attachments/fc3f126c-b2ed-4a6b-8c8d-bbfbf4602cf3)
kayg commented 2026-10-14 06:58:30 +00:00
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Process-event scope clarification at 6c88ff94: existing shell-ignores-sighup tests the shell disposition, while the brief explicitly asks for a child. Added a foreground Python child that installs SIG_IGN before publishing its fixture PID, receives SIGHUP through the frozen Signal frame, stays alive while 998 siblings confirm input, then is retired by its captured PID so all 999 surviving sessions confirm input. events3 is staged and waiting for the perf lock behind long2. No terminal-state/content oracle added. Child fixture remains uncommitted until the real perf-VM execution.

Process-event scope clarification at 6c88ff94: existing shell-ignores-sighup tests the shell disposition, while the brief explicitly asks for a child. Added a foreground Python child that installs SIG_IGN before publishing its fixture PID, receives SIGHUP through the frozen Signal frame, stays alive while 998 siblings confirm input, then is retired by its captured PID so all 999 surviving sessions confirm input. events3 is staged and waiting for the perf lock behind long2. No terminal-state/content oracle added. Child fixture remains uncommitted until the real perf-VM execution.
kayg commented 2026-10-14 07:02:04 +00:00
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Main requested matrix and all 16 repeated latency fixtures are complete, attached above. Additional fresh-idle measurement after snapshot-materializing every VT is queued at N=1000 (then 100/10/1), using a short snapshot-only probe, same indexed image, private 5-GiB scope and flock -w 3600. Current lock census shows holder PID 597982 and multiple waiters; no number has been obtained and none is inferred. This extra distinguishes the fresh lazy-allocation floor from all-VT idle. Benchmark scheduling belongs to the orchestrator; I will honor the lock timeout and never bypass the lock or stop another job. Task-base x86 link is still in progress for D243 failure attribution.

Main requested matrix and all 16 repeated latency fixtures are complete, attached above. Additional fresh-idle measurement after snapshot-materializing every VT is queued at N=1000 (then 100/10/1), using a short snapshot-only probe, same indexed image, private 5-GiB scope and flock -w 3600. Current lock census shows holder PID 597982 and multiple waiters; no number has been obtained and none is inferred. This extra distinguishes the fresh lazy-allocation floor from all-VT idle. Benchmark scheduling belongs to the orchestrator; I will honor the lock timeout and never bypass the lock or stop another job. Task-base x86 link is still in progress for D243 failure attribution.
kayg commented 2026-10-14 07:02:18 +00:00
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Finding (long2 still running, not final): perf VM under shared flock, exact 90c684a3 static research image. At 600 seconds host PSS=935556 KiB; at 900 seconds PSS=1368704 KiB (+433148 KiB after warm-up). Both rows have 3005 FDs and one thread; load at 900 seconds=0.01/0.86/2.38. Echo p99 at those rows=17.1014/24.9859 ms, above D41 5 ms. The requested 900 idle / 90 one-line-per-second / 10 seq-burst mix with viewer churn/resizes has not settled by 900 seconds. Keeping the 7200-second run active; product code remains untouched. Final JSONL and table will be attached after the outcome.

Finding (long2 still running, not final): perf VM under shared flock, exact 90c684a3 static research image. At 600 seconds host PSS=935556 KiB; at 900 seconds PSS=1368704 KiB (+433148 KiB after warm-up). Both rows have 3005 FDs and one thread; load at 900 seconds=0.01/0.86/2.38. Echo p99 at those rows=17.1014/24.9859 ms, above D41 5 ms. The requested 900 idle / 90 one-line-per-second / 10 seq-burst mix with viewer churn/resizes has not settled by 900 seconds. Keeping the 7200-second run active; product code remains untouched. Final JSONL and table will be attached after the outcome.
kayg commented 2026-10-14 07:05:57 +00:00
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Finding: compact Mesh and SSH tables reduce .data.rel.ro by 5,568 bytes and .relr.dyn by 72 bytes, but the static PIE grows from 22,275,888 to 22,282,800 bytes (+6,912), so this representation fails the no-growth gate. .text grows 6,336 bytes and .rodata grows 4,096 bytes. The SSH crate passed release musl clippy and its descriptor unit test passed (1/1). I have not run perf measurements on this over-size candidate. Receipt: ssh-candidate-size.txt.

Finding: compact Mesh and SSH tables reduce `.data.rel.ro` by 5,568 bytes and `.relr.dyn` by 72 bytes, but the static PIE grows from 22,275,888 to 22,282,800 bytes (+6,912), so this representation fails the no-growth gate. `.text` grows 6,336 bytes and `.rodata` grows 4,096 bytes. The SSH crate passed release musl clippy and its descriptor unit test passed (1/1). I have not run perf measurements on this over-size candidate. Receipt: [ssh-candidate-size.txt](https://git.kayg.org/attachments/da99a2fa-b6e9-4563-bcc1-f567d12840ea).
kayg commented 2026-10-14 07:21:22 +00:00
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D243 attribution: detached task base b182529fcc built with the same pinned production x86 static-PIE recipe. Base image: 22,275,888 bytes, SHA a1859873d3e862bb9307d3b81574842ed90019784f15042eb64dddaa5edfd992. Branch default: 22,275,888 bytes, SHA 34686fe8983d7ab52b656d2b18dd858742b4c85e084b3cccd9ee5a8a3d78f306. Size delta 0 bytes: the +71,584-byte x86 cap failure predates this branch; no claim of bit-identical images. comparison base build. ARM base-size attribution is now building too.

Fresh idle N=1000 measured host+shell PSS totals: pooled 2,330,797 KiB (2.223 GiB), default 3,444,288 KiB (3.285 GiB), 32.3% reduction in this fixture. This is neither whole-node RSS nor a 99% whole-system saving: kernel PTYs, sockets and server/control-plane costs are additional. Pooled 7.184 KiB/session is the fresh lazy-VT host floor; VT remains allocated after use. The additional all-VT idle probe is still waiting for the shared lock; no all-VT idle number is claimed yet.

D243 attribution: detached task base b182529fcc38ed65c53ad323b55e444beaa4e2a7 built with the same pinned production x86 static-PIE recipe. Base image: 22,275,888 bytes, SHA a1859873d3e862bb9307d3b81574842ed90019784f15042eb64dddaa5edfd992. Branch default: 22,275,888 bytes, SHA 34686fe8983d7ab52b656d2b18dd858742b4c85e084b3cccd9ee5a8a3d78f306. Size delta 0 bytes: the +71,584-byte x86 cap failure predates this branch; no claim of bit-identical images. [comparison](https://git.kayg.org/attachments/0eb875d9-9b49-42c0-b05d-9550a319d32e) [base build](https://git.kayg.org/attachments/873ecd98-6b68-40c8-a6b2-208bcf98006f). ARM base-size attribution is now building too. Fresh idle N=1000 measured host+shell PSS totals: pooled 2,330,797 KiB (2.223 GiB), default 3,444,288 KiB (3.285 GiB), 32.3% reduction in this fixture. This is neither whole-node RSS nor a 99% whole-system saving: kernel PTYs, sockets and server/control-plane costs are additional. Pooled 7.184 KiB/session is the fresh lazy-VT host floor; VT remains allocated after use. The additional all-VT idle probe is still waiting for the shared lock; no all-VT idle number is claimed yet.
kayg commented 2026-10-14 07:28:30 +00:00
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Step pushed: 2b84fd17 adds the explicit foreground-child SIGHUP fixture. It atomically publishes the PID only after SIG_IGN is installed, checks the parent/foreground group and captured birth identity, sends the frozen Signal frame, and requires sibling input before and after retiring that child. Functional Python fixture suite: 10 passed; cargo fmt and diff checks passed. The 1000-session events3 run is queued under the shared lock; no perf success claim yet. At 2450 seconds long2 remains alive: PSS=1959844 KiB, FDs=3005, threads=1, echo batch p99=36.3710 ms, load=0.31/0.53/1.11. Memory has slowed near 1.9 GiB; early post-600-second growth and the 5-ms echo failures remain retained.

Step pushed: 2b84fd17 adds the explicit foreground-child SIGHUP fixture. It atomically publishes the PID only after SIG_IGN is installed, checks the parent/foreground group and captured birth identity, sends the frozen Signal frame, and requires sibling input before and after retiring that child. Functional Python fixture suite: 10 passed; cargo fmt and diff checks passed. The 1000-session events3 run is queued under the shared lock; no perf success claim yet. At 2450 seconds long2 remains alive: PSS=1959844 KiB, FDs=3005, threads=1, echo batch p99=36.3710 ms, load=0.31/0.53/1.11. Memory has slowed near 1.9 GiB; early post-600-second growth and the 5-ms echo failures remain retained.
kayg commented 2026-10-14 07:47:09 +00:00
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Finding: removing the helper's extra string-pointer vector saves 512 bytes from the first Mesh compact candidate, but the production binary remains 2,912 bytes over baseline (22,278,800 bytes). .data.rel.ro is down 4,128 bytes and .relr.dyn 56 bytes; .text remains up 5,312 bytes. The compact API contract test and Mesh metadata integration test each passed (1/1), and API/Mesh release musl clippy passed. The no-growth gate still fails, so I have not run perf measurements. Receipt: mesh-compact-v2-size.txt.

Finding: removing the helper's extra string-pointer vector saves 512 bytes from the first Mesh compact candidate, but the production binary remains 2,912 bytes over baseline (22,278,800 bytes). `.data.rel.ro` is down 4,128 bytes and `.relr.dyn` 56 bytes; `.text` remains up 5,312 bytes. The compact API contract test and Mesh metadata integration test each passed (1/1), and API/Mesh release musl clippy passed. The no-growth gate still fails, so I have not run perf measurements. Receipt: [mesh-compact-v2-size.txt](https://git.kayg.org/attachments/f87b9ea5-152a-4f7c-84d9-02a8c4d35074).
kayg commented 2026-10-14 07:47:14 +00:00
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Finding: The production smoke did not acquire perf-bench.lock within its required 3,600-second wait; flock returned 1 before launching systemd-run, the stderr log was empty, and the output JSON remained 0 bytes. No benchmark process ran. PID 597982 still held the lock at 07:47 UTC. I am requeueing the same row with a fresh one-hour wait.

Finding: The production smoke did not acquire perf-bench.lock within its required 3,600-second wait; `flock` returned 1 before launching `systemd-run`, the stderr log was empty, and the output JSON remained 0 bytes. No benchmark process ran. PID 597982 still held the lock at 07:47 UTC. I am requeueing the same row with a fresh one-hour wait.
kayg commented 2026-10-14 07:52:41 +00:00
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Size check complete with the same command (cargo build --locked --release --package infraternal --target x86_64-unknown-linux-musl, default features), then strip --strip-all on each copy. Merge base b182529fcc38ed65c53ad323b55e444beaa4e2a7: 22,275,880 bytes, SHA-256 33e24d8d139d1111f6a34a15e87baa8a1ab22f2f0bab316efc6205fcd20ae341. Branch head 12f657f7882077d54123272456541764d49a77b2: 22,275,880 bytes, SHA-256 d63c0e5fa2c64b5f93a3aea69814f3eeaee325ae41b12627dc0fbefd1fe69a59. Delta: 0 bytes. Both are stripped static x86_64 PIEs.

Size check complete with the same command (`cargo build --locked --release --package infraternal --target x86_64-unknown-linux-musl`, default features), then `strip --strip-all` on each copy. Merge base `b182529fcc38ed65c53ad323b55e444beaa4e2a7`: 22,275,880 bytes, SHA-256 `33e24d8d139d1111f6a34a15e87baa8a1ab22f2f0bab316efc6205fcd20ae341`. Branch head `12f657f7882077d54123272456541764d49a77b2`: 22,275,880 bytes, SHA-256 `d63c0e5fa2c64b5f93a3aea69814f3eeaee325ae41b12627dc0fbefd1fe69a59`. Delta: 0 bytes. Both are stripped static x86_64 PIEs.
kayg commented 2026-10-14 07:53:38 +00:00
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Research delivery, process-per-user branch head 12f657f788 (pushed; worktree clean). Design is research/process-per-user/README.md. Prototype is opt-in via process-per-user; production defaults remain unchanged and nothing deployed. Core: indexed one-person/account PTY host, complete lazy VT prefix, bounded retention, shared frozen peer/decoder/input handling, per-session Rust unwind retirement and descriptor-transfer primitive. This is research for owner adoption, not production readiness or a new foundation choice.

Measured 1/10/100/1000 idle/light/all-flood host PSS and zero idle CPU in every five-second window on the locked 4-vCPU perf VM. At 1000 fresh sessions: idle/light/flood 7.184/10.028/906.572 KiB host PSS per session, plus shells/kernel/control-plane costs. Default sustained 1000 flood hit the private 5-GiB scope cap and OOMed; its finite-burst timing is not an equivalent flood comparison. All 16 baseline/host/host/baseline latency repetitions completed: idle echo p99 at 1000 baseline 0.955–1.603 ms, pooled 1.228–1.339 ms; pooled sustained flood confirmation maxima 3.200–4.464 seconds (3 samples/repeat, not credible p99). Shared retention is smaller: equal-retention ablation remains required. Light CPU remains higher than default even after the indexed reactor cut the first prototype's cost by about 96–97%.

Complete latency matrix; memory and capacity receipts linked in preceding comments. Author checklist and real-PTY/real infraternal-agent, panic, FD reuse, native-oracle and multi-batch descriptor tests are attached above. Descriptor tests transfer all 130 masters across three batches, with CLOEXEC and no ancillary-refusal FD leak. No exact hot-replacement claim: PAM/person binding, rootful expected UID discovery, person revocation, exact state/FD commit, nonblocking reaping, native-fault/resize-allocation containment and aggregate peer/input bounds remain adoption work. No consistent latency win and no flood-budget pass is claimed.

Final scripts/verify fast exited 1. Every non-static Rust row passed; final TypeScript suite independently passed because Rust failure stops the dispatcher before TS. Both default artifact size failures are reproduced at task base b182529fcc with identical byte counts: x86 22,275,888 vs cap 22,204,304 (+71,584); ARM 19,704,712 vs cap 19,638,744 (+65,968); branch growth 0 bytes on both architectures. Linkage/trust checks pass; x86 key-memory probe passes, ARM runtime probe explicitly not run on x86. D243 resolution on dev is required before a merge-ready claim; caps and decisions were not changed.

x86 comparison, ARM comparison, ARM base build, complete fast gate, TS gate, final Python marker tests: 3 passed. Fast ran through final Rust/TS sources; the sole later repository diff was measurement-fixture cleanup, independently tested and exercised by completed repeats.

Verbatim fast-gate summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Own temporary baseline worktree and build targets removed; evidence retained outside the checkout. No other job or owner fixture was stopped or changed. Additional all-VT idle follow-up could not acquire the shared perf lock within flock -w 3600: exit 1, 0-byte receipt, no fixture launched; later scales not attempted. No all-VT idle statistic is claimed. Wait outcome, reproducible snapshot-only probe. This is recorded for a future booked measurement window, not hidden inside the fresh lazy-VT floor. Final cleanup: fixture_host_pids []; no snapshot-only state directory; unused own capacity state removed. All work commits are pushed, no issue closed. Research is delivered; full-gate/production-adoption readiness remains blocked as stated above.

Research delivery, process-per-user branch head 12f657f7882077d54123272456541764d49a77b2 (pushed; worktree clean). Design is research/process-per-user/README.md. Prototype is opt-in via process-per-user; production defaults remain unchanged and nothing deployed. Core: indexed one-person/account PTY host, complete lazy VT prefix, bounded retention, shared frozen peer/decoder/input handling, per-session Rust unwind retirement and descriptor-transfer primitive. This is research for owner adoption, not production readiness or a new foundation choice. Measured 1/10/100/1000 idle/light/all-flood host PSS and zero idle CPU in every five-second window on the locked 4-vCPU perf VM. At 1000 fresh sessions: idle/light/flood 7.184/10.028/906.572 KiB host PSS per session, plus shells/kernel/control-plane costs. Default sustained 1000 flood hit the private 5-GiB scope cap and OOMed; its finite-burst timing is not an equivalent flood comparison. All 16 baseline/host/host/baseline latency repetitions completed: idle echo p99 at 1000 baseline 0.955–1.603 ms, pooled 1.228–1.339 ms; pooled sustained flood confirmation maxima 3.200–4.464 seconds (3 samples/repeat, not credible p99). Shared retention is smaller: equal-retention ablation remains required. Light CPU remains higher than default even after the indexed reactor cut the first prototype's cost by about 96–97%. [Complete latency matrix](https://git.kayg.org/attachments/bb291ce1-d143-4089-8472-9265994aaf25); memory and capacity receipts linked in preceding comments. Author checklist and real-PTY/real infraternal-agent, panic, FD reuse, native-oracle and multi-batch descriptor tests are attached above. Descriptor tests transfer all 130 masters across three batches, with CLOEXEC and no ancillary-refusal FD leak. No exact hot-replacement claim: PAM/person binding, rootful expected UID discovery, person revocation, exact state/FD commit, nonblocking reaping, native-fault/resize-allocation containment and aggregate peer/input bounds remain adoption work. No consistent latency win and no flood-budget pass is claimed. Final scripts/verify fast exited 1. Every non-static Rust row passed; final TypeScript suite independently passed because Rust failure stops the dispatcher before TS. Both default artifact size failures are reproduced at task base b182529fcc38ed65c53ad323b55e444beaa4e2a7 with identical byte counts: x86 22,275,888 vs cap 22,204,304 (+71,584); ARM 19,704,712 vs cap 19,638,744 (+65,968); branch growth 0 bytes on both architectures. Linkage/trust checks pass; x86 key-memory probe passes, ARM runtime probe explicitly not run on x86. D243 resolution on dev is required before a merge-ready claim; caps and decisions were not changed. [x86 comparison](https://git.kayg.org/attachments/0eb875d9-9b49-42c0-b05d-9550a319d32e), [ARM comparison](https://git.kayg.org/attachments/02e6727b-ad06-4f9a-b1ba-d92cc6a00c90), [ARM base build](https://git.kayg.org/attachments/ce19e8ab-f04a-4aa3-a644-b92a9fe9454b), [complete fast gate](https://git.kayg.org/attachments/e4c50df9-8760-473e-ba81-2761b2497ec0), [TS gate](https://git.kayg.org/attachments/f9e6f6ff-f932-4a44-befa-1dd8559b710e), [final Python marker tests: 3 passed](https://git.kayg.org/attachments/aeb4b083-54ee-4ad5-a6c8-5006cf9aa2ff). Fast ran through final Rust/TS sources; the sole later repository diff was measurement-fixture cleanup, independently tested and exercised by completed repeats. Verbatim fast-gate summary: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` Own temporary baseline worktree and build targets removed; evidence retained outside the checkout. No other job or owner fixture was stopped or changed. Additional all-VT idle follow-up could not acquire the shared perf lock within flock -w 3600: exit 1, 0-byte receipt, no fixture launched; later scales not attempted. No all-VT idle statistic is claimed. [Wait outcome](https://git.kayg.org/attachments/0d1e7bc1-b651-4437-9ee7-6616b1b9297c), [reproducible snapshot-only probe](https://git.kayg.org/attachments/ae9c6f96-2ff7-45bf-a2ca-d314bd94b389). This is recorded for a future booked measurement window, not hidden inside the fresh lazy-VT floor. [Final cleanup](https://git.kayg.org/attachments/baa836ba-82f3-4799-ad04-625121297718): fixture_host_pids []; no snapshot-only state directory; unused own capacity state removed. All work commits are pushed, no issue closed. Research is delivered; full-gate/production-adoption readiness remains blocked as stated above.
kayg commented 2026-10-14 07:55:53 +00:00
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Process-event follow-up scheduling: events3 did not execute; its prescribed flock -w 3600 wait expired while long2 held the perf lock. This is a scheduling timeout, not a product failure. events4 is now queued with the same 2b84fd17 driver and exact research image; the remaining long2 duration fits inside this new one-hour wait. Long2 is still alive after 4020 seconds: host PSS=2064076 KiB (about 2016 MiB), FDs=3005, threads=1, batch echo p99=22.48 ms. Final raw receipt/outcome remains pending.

Process-event follow-up scheduling: events3 did not execute; its prescribed flock -w 3600 wait expired while long2 held the perf lock. This is a scheduling timeout, not a product failure. events4 is now queued with the same 2b84fd17 driver and exact research image; the remaining long2 duration fits inside this new one-hour wait. Long2 is still alive after 4020 seconds: host PSS=2064076 KiB (about 2016 MiB), FDs=3005, threads=1, batch echo p99=22.48 ms. Final raw receipt/outcome remains pending.
kayg commented 2026-10-14 07:57:07 +00:00
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Continuation r2 start: branch process-per-user, base/head 12f657f788; rebase onto origin/process-per-user is already current. Read all 102 #205 comments; no parent recorded. D270 read from origin/dev (not yet in this older branch). First harden per-session allocation isolation, then diagnose retained growth and quiet-session fairness; defaults unchanged, no deploy. Perf VM 10.69.69.208 explicitly authorised. D128 plan: versioned whole-host state plus all PTY masters transferred in bounded batches; old host retains ownership until new host validates every session and commits, abort returns to old owner. FD transfer alone is not exact upgrade survival; that later gate remains required.

Continuation r2 start: branch process-per-user, base/head 12f657f7882077d54123272456541764d49a77b2; rebase onto origin/process-per-user is already current. Read all 102 #205 comments; no parent recorded. D270 read from origin/dev (not yet in this older branch). First harden per-session allocation isolation, then diagnose retained growth and quiet-session fairness; defaults unchanged, no deploy. Perf VM 10.69.69.208 explicitly authorised. D128 plan: versioned whole-host state plus all PTY masters transferred in bounded batches; old host retains ownership until new host validates every session and commits, abort returns to old owner. FD transfer alone is not exact upgrade survival; that later gate remains required.
kayg commented 2026-10-14 07:58:07 +00:00
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Correction to the scheduling comment: the exact 4020-second row has PSS=2063968 KiB, not 2064076 KiB. The previous integer was incorrectly reconstructed from the rounded 2016-MiB progress display. FDs=3005, threads=1 and echo p99=22.477812 ms are unchanged. Raw final JSONL will be attached; use that for exact numbers.

Correction to the scheduling comment: the exact 4020-second row has PSS=2063968 KiB, not 2064076 KiB. The previous integer was incorrectly reconstructed from the rounded 2016-MiB progress display. FDs=3005, threads=1 and echo p99=22.477812 ms are unchanged. Raw final JSONL will be attached; use that for exact numbers.
kayg commented 2026-10-14 07:59:20 +00:00
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Finding/repair pushed: 2292a1fd. A longest-permitted 10-character run ID produced a 110-byte Unix socket pathname for process-events, exceeding Linux sun_path (108 bytes including NUL). Existing events2/events4 explicit names are 107 bytes and fit, so their execution is unaffected. A new regression failed before the fix; the wrapper now uses the shorter events directory for both execution and receipt fetch. All 11 Python fixture tests, cargo fmt and diff checks pass. No product file changed.

socket-path-red.log
socket-path-green.log

Finding/repair pushed: 2292a1fd. A longest-permitted 10-character run ID produced a 110-byte Unix socket pathname for process-events, exceeding Linux sun_path (108 bytes including NUL). Existing events2/events4 explicit names are 107 bytes and fit, so their execution is unaffected. A new regression failed before the fix; the wrapper now uses the shorter events directory for both execution and receipt fetch. All 11 Python fixture tests, cargo fmt and diff checks pass. No product file changed. [socket-path-red.log](https://git.kayg.org/attachments/a75dac52-cf71-4c90-9672-e0e91686d928) [socket-path-green.log](https://git.kayg.org/attachments/5f3bc183-b912-4b3f-89d9-c78131f2ac14)
kayg commented 2026-10-14 08:01:35 +00:00
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Allocation finding: terminal.rs uses vte 0.15 with std enabled; its osc_raw Vec grows without a bound while Terminal.pending only stops at MAX_FRAME. Pinned native PageList.zig initializes both screen pools with pageAllocator(), bypassing the C allocator passed to ghostty_terminal_new. An allocator-only guard therefore cannot account every native page. Adding a fragmented OSC/DCS/APC carry regression before the fix; proposed feature-only boundary is a bounded streaming control-string discard plus a tracked native allocator covering page pools, with per-session accounting and bulk reclamation after a retired nontransactional resize. Production defaults remain unchanged.

Allocation finding: terminal.rs uses vte 0.15 with std enabled; its osc_raw Vec grows without a bound while Terminal.pending only stops at MAX_FRAME. Pinned native PageList.zig initializes both screen pools with pageAllocator(), bypassing the C allocator passed to ghostty_terminal_new. An allocator-only guard therefore cannot account every native page. Adding a fragmented OSC/DCS/APC carry regression before the fix; proposed feature-only boundary is a bounded streaming control-string discard plus a tracked native allocator covering page pools, with per-session accounting and bulk reclamation after a retired nontransactional resize. Production defaults remain unchanged.
kayg commented 2026-10-14 08:09:03 +00:00
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Finding: the process-per-user research host has no server WebSocket ingress in this branch. crates/infraternal/src/user_host_cli.rs directly calls infraternal_shim::run_host, while the measured production path owns /v1/ws in the separate server fixture. I will report PPU viewer echo through its real local Unix protocol as a distinct boundary; I will not add an unshipped proxy and count its cost as product behavior. This makes the PPU viewer comparison directional, not protocol-identical.

Finding: the process-per-user research host has no server WebSocket ingress in this branch. `crates/infraternal/src/user_host_cli.rs` directly calls `infraternal_shim::run_host`, while the measured production path owns `/v1/ws` in the separate server fixture. I will report PPU viewer echo through its real local Unix protocol as a distinct boundary; I will not add an unshipped proxy and count its cost as product behavior. This makes the PPU viewer comparison directional, not protocol-identical.
kayg commented 2026-10-14 08:15:40 +00:00
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Finding: fixed-size LazyLock action arrays fail the no-growth gate. The production binary grows by 13,344 bytes to 22,289,232; .data.rel.ro falls 3,936 bytes, while .text grows 10,880 bytes and .data grows 4,352 bytes. No perf measurements were run on this candidate. Receipt: fixed-array-candidate-size.txt.

Finding: fixed-size `LazyLock` action arrays fail the no-growth gate. The production binary grows by 13,344 bytes to 22,289,232; `.data.rel.ro` falls 3,936 bytes, while `.text` grows 10,880 bytes and `.data` grows 4,352 bytes. No perf measurements were run on this candidate. Receipt: [fixed-array-candidate-size.txt](https://git.kayg.org/attachments/61712cda-7ba4-4d7d-80e6-fa4b3b7255ce).
kayg commented 2026-10-14 08:25:17 +00:00
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String isolation regression: fragmented OSC/DCS/APC/PM/SOS failed before the fix with carry capacity 1,048,576 bytes; now carry remains <=4,096 bytes and the native state matches following printable text/CSI. Three standalone boundary tests also pass (fragmentation, escaped restart, unchanged finite strings). This is build-host functional evidence, not the cgroup/perf gate; that before-fix run is waiting for perf-bench.lock. Native allocator integration tests are compiling. No production default changed.

control-cap-red.log
control-cap-green3.log

String isolation regression: fragmented OSC/DCS/APC/PM/SOS failed before the fix with carry capacity 1,048,576 bytes; now carry remains <=4,096 bytes and the native state matches following printable text/CSI. Three standalone boundary tests also pass (fragmentation, escaped restart, unchanged finite strings). This is build-host functional evidence, not the cgroup/perf gate; that before-fix run is waiting for perf-bench.lock. Native allocator integration tests are compiling. No production default changed. [control-cap-red.log](https://git.kayg.org/attachments/641a81f2-ae53-4557-ba36-12b5459136ac) [control-cap-green3.log](https://git.kayg.org/attachments/9ee7ca64-54de-4ca0-acc9-0b3424452bf6)
kayg commented 2026-10-14 08:26:07 +00:00
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Orchestrator, 13:56 IST: the relocation-table lane (shim-relocs, D268 Q20 option b) is paused, not relaunched after the disk-full crash. Reason: its best candidate saved 3.56 KiB per shim (1,134.76 → 1,131.2 KiB at N=100) and grew the binary 7,808 B, and D270 makes one process per user the design we harden; there the ~900 KiB of relocated image data is paid once per user instead of once per terminal. Branch kept as is.

Orchestrator, 13:56 IST: the relocation-table lane (`shim-relocs`, D268 Q20 option b) is paused, not relaunched after the disk-full crash. Reason: its best candidate saved 3.56 KiB per shim (1,134.76 → 1,131.2 KiB at N=100) and grew the binary 7,808 B, and D270 makes one process per user the design we harden; there the ~900 KiB of relocated image data is paid once per user instead of once per terminal. Branch kept as is.
kayg commented 2026-10-14 08:26:48 +00:00
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Finding: full scripts/verify fast stopped on build-host disk exhaustion, not an executed test assertion. Rust test compilation failed with No space left on device (mesh_ssh incremental directory and LLVM output stream); cargo-deny could not write its advisory DB index; static setup could not create its wrapper-test directory. Fmt, VT fmt, compile-out and clippy passed.

At inspection the filesystem already had 150 GiB free (other cleanup occurred before our check). Removed only this job’s unused fuzz-target, panic-target, test-target and completed size-target after preserving the baseline artifact. Re-running full verify fast on final head 2292a1fd; no waiver and no product changes. Perf VM soak is unaffected.

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | FAIL (101)   |
| cargo-deny                | FAIL (1)     |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

verify-fast-head.log

Finding: full scripts/verify fast stopped on build-host disk exhaustion, not an executed test assertion. Rust test compilation failed with No space left on device (mesh_ssh incremental directory and LLVM output stream); cargo-deny could not write its advisory DB index; static setup could not create its wrapper-test directory. Fmt, VT fmt, compile-out and clippy passed. At inspection the filesystem already had 150 GiB free (other cleanup occurred before our check). Removed only this job’s unused fuzz-target, panic-target, test-target and completed size-target after preserving the baseline artifact. Re-running full verify fast on final head 2292a1fd; no waiver and no product changes. Perf VM soak is unaffected. ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | FAIL (101) | | cargo-deny | FAIL (1) | | static builds | FAIL (1) | +---------------------------+--------------+ ``` [verify-fast-head.log](https://git.kayg.org/attachments/a7be69b7-2bb3-453b-904c-a6706718b905)
kayg commented 2026-10-14 08:27:16 +00:00
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Native feature build failed with LLVM ERROR: IO failure on output stream: No space left on device. Immediate filesystem checks show the job cache on /dev/sda1 has 156 GiB available and 28,497,904 free inodes; /tmp has 31 GiB available. No foreign files or processes removed. Retrying with compiler TMPDIR explicitly under the job cache; this is a build blocker, not a terminal regression. Perf baseline memory/fairness runs are still waiting on the shared lock; no measurement claim.

Native feature build failed with LLVM ERROR: IO failure on output stream: No space left on device. Immediate filesystem checks show the job cache on /dev/sda1 has 156 GiB available and 28,497,904 free inodes; /tmp has 31 GiB available. No foreign files or processes removed. Retrying with compiler TMPDIR explicitly under the job cache; this is a build blocker, not a terminal regression. Perf baseline memory/fairness runs are still waiting on the shared lock; no measurement claim.
kayg commented 2026-10-14 08:27:25 +00:00
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Continuation start: branch bench-vs-tmux at 12f657f7882077d54123272456541764d49a77b2; production comparison base origin/dev 97366a3b645905fbb3a47ebea81de27f69017e78; prototype origin/process-per-user at the same head. Worktree is clean. Read all 110 #205 comments; no parent issue is recorded. Read all four published reference charts. GitHub currently marks tmux 3.8 (tag 7f2a35a) as the latest release: https://github.com/tmux/tmux/releases/tag/3.8. Continuing the reference-matched measurement matrix and CPU remeasurement with the indexed reactor. No product code changes, push or deployment.

Continuation start: branch `bench-vs-tmux` at `12f657f7882077d54123272456541764d49a77b2`; production comparison base `origin/dev` `97366a3b645905fbb3a47ebea81de27f69017e78`; prototype `origin/process-per-user` at the same head. Worktree is clean. Read all 110 #205 comments; no parent issue is recorded. Read all four published reference charts. GitHub currently marks tmux 3.8 (tag `7f2a35a`) as the latest release: https://github.com/tmux/tmux/releases/tag/3.8. Continuing the reference-matched measurement matrix and CPU remeasurement with the indexed reactor. No product code changes, push or deployment.
kayg commented 2026-10-14 08:32:32 +00:00
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Measurement-harness finding: server_matrix.py:707-710 writes echo results to record before the result object is initialized at line 726. Any production scale row with echo enabled (light/flood, and currently filled) raises before producing JSON. I’m fixing this in the scratch harness only; no product source changed.

Measurement-harness finding: `server_matrix.py:707-710` writes echo results to `record` before the result object is initialized at line 726. Any production scale row with echo enabled (`light`/`flood`, and currently `filled`) raises before producing JSON. I’m fixing this in the scratch harness only; no product source changed.
kayg commented 2026-10-14 08:35:03 +00:00
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Fixture-correctness finding: scripts/fill.sh currently prints its FILL_* completion marker as a terminal line after the numbered prose (/root/infraternal-bench/bench-vs-tmux/scripts/fill.sh, final printf). That makes the chart workload 10,001 lines and the scale workload 2,025 lines. I’m moving completion signaling to a state-side acknowledgement file so each terminal receives exactly the requested filler lines.

Fixture-correctness finding: `scripts/fill.sh` currently prints its `FILL_*` completion marker as a terminal line after the numbered prose (`/root/infraternal-bench/bench-vs-tmux/scripts/fill.sh`, final `printf`). That makes the chart workload 10,001 lines and the scale workload 2,025 lines. I’m moving completion signaling to a state-side acknowledgement file so each terminal receives exactly the requested filler lines.
kayg commented 2026-10-14 08:45:59 +00:00
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Size milestone at head 2292a1fd: production-recipe stripped static x86_64-musl defaults measure 22275888 bytes for both merge base b182529f and branch head; delta +0 bytes. Both file descriptions confirm static-PIE linked and stripped. Baseline SHA-256 aa15b65c1923b73019d416f6fd9b710eb845d985fa2bbb58479979e70d995a98; head 92c4801f1ff5b01530d2db0eb1694e62c7afa16cd957f4d70ab993bf0d592513. Both are 71584 bytes over the existing D243 ceiling (22204304); no ceiling changed. Research image and default production image are distinct; perf receipts use the explicitly feature-enabled research image.

static-size-comparison.txt

Size milestone at head 2292a1fd: production-recipe stripped static x86_64-musl defaults measure 22275888 bytes for both merge base b182529f and branch head; delta +0 bytes. Both file descriptions confirm static-PIE linked and stripped. Baseline SHA-256 aa15b65c1923b73019d416f6fd9b710eb845d985fa2bbb58479979e70d995a98; head 92c4801f1ff5b01530d2db0eb1694e62c7afa16cd957f4d70ab993bf0d592513. Both are 71584 bytes over the existing D243 ceiling (22204304); no ceiling changed. Research image and default production image are distinct; perf receipts use the explicitly feature-enabled research image. [static-size-comparison.txt](https://git.kayg.org/attachments/aa3ceb02-8829-42d6-a17b-5108072d30de)
kayg commented 2026-10-14 08:50:31 +00:00
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Before-fix reproductions completed on the 4-vCPU perf VM under perf-bench.lock, indexed static image SHA af6da9b4ba9c8fc861c216c26a2bc1117b1252e59024298b187878a7dc0ad7ac.

  • Memory: 20 sessions, working set 51,109,888 B, cap 67,887,104 B. The 32-MiB OSC ended the shared host: memory.events max=19, oom=1, oom_kill=1; sibling input failed. Initial load 5.43/2.15/1.59. The sampler then reported the missing host as an additional failure; original OOM receipt is retained.
  • Fairness: 1,000 sessions, 100 detached flooders, 1,000 quiet-session generated echo samples. Idle p99 1.640678 ms; flooding p99 41.742632 ms; extra 40.101954 ms, max 60.178603 ms. Load at sample 9.10/3.48/2.06; one host thread, 2,905 FDs. Flood byte-offset growth 685,305,711 B across setup and sampling; 17.726463 s is only the echo sampling window, so no exact throughput rate is inferred from it. The revised driver records each producer's offset/time boundaries for subsequent paired rates. Quiet socket receives no flood frames, avoiding driver bulk-decode interference.
Before-fix reproductions completed on the 4-vCPU perf VM under perf-bench.lock, indexed static image SHA af6da9b4ba9c8fc861c216c26a2bc1117b1252e59024298b187878a7dc0ad7ac. - Memory: 20 sessions, working set 51,109,888 B, cap 67,887,104 B. The 32-MiB OSC ended the shared host: memory.events max=19, oom=1, oom_kill=1; sibling input failed. Initial load 5.43/2.15/1.59. The sampler then reported the missing host as an additional failure; original OOM receipt is retained. - Fairness: 1,000 sessions, 100 detached flooders, 1,000 quiet-session generated echo samples. Idle p99 1.640678 ms; flooding p99 41.742632 ms; extra 40.101954 ms, max 60.178603 ms. Load at sample 9.10/3.48/2.06; one host thread, 2,905 FDs. Flood byte-offset growth 685,305,711 B across setup and sampling; 17.726463 s is only the echo sampling window, so no exact throughput rate is inferred from it. The revised driver records each producer's offset/time boundaries for subsequent paired rates. Quiet socket receives no flood frames, avoiding driver bulk-decode interference.
kayg commented 2026-10-14 08:50:45 +00:00
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Perf checks complete at branch head 2292a1fd (test/bench only; no deployment). Source image 90c684a3, static research feature enabled, SHA-256 59fabf3a47ba116014d5ab8bac189f7f4c5ee1a36fbb0d6470f80e453e16aed8. VM infraternal-perf-test, kernel 6.12.111+deb13-amd64, 4 vCPU, shared flock, CPUWeight=10000, private 5-GiB ceiling. One-minute load during the soak ranged 0.00–15.67; the receipt records every sample. Standalone UNIX viewers/root-account shells; this does not prove D240/PAM integration or browser behavior.

Check Expected Observed Pass/fail Evidence
1000-terminal, 2-hour mixed load 900 idle, 90 one-line/s, 10 seq bursts; churn/resizes; all sessions accept input 720 ten-second samples; 7200.0215 s; host alive; all 1000 final input confirmations PASS completion/liveness; overall soak FAIL below raw, log
Memory after 600-s warm-up Median growth and positive slope at most 1024 KiB First/last settled-quarter PSS medians 1735776/2066976 KiB: +331200 KiB (323.44 MiB); slope +288507.78 KiB/hour; peak host PSS 2075068 KiB FAIL raw
File descriptors / threads No growth after warm-up 3005 FDs throughout; one thread; fd_growth=0, thread_growth=0 PASS raw
Echo steadiness Last/first settled-quarter median p99 ratio at most 1.25 25.6712→23.8189 ms (ratio 0.928) PASS steadiness raw
Native echo budget Each post-warm-up sampled p99 at most 5 ms Peak batch-confirmation p99 123.8522 ms; 100 concurrent printf probes/sample FAIL raw
Infraternal-agent restart while busy Real daemon rediscovers all IDs; all sessions accept input Exact census preserved; 1000 responsive sessions PASS raw, log
Shell SIGKILL Exited(-9); every other session accepts input Victim status -9; 999 responsive siblings PASS raw
Shell ignores SIGHUP Ignoring shell and siblings survive 999 live sessions responsive PASS raw
Child ignores SIGHUP Foreground child survives; siblings accept input Captured child survived frozen Signal(HUP); 998 siblings responsive while child ran; all 999 live shells responsive after child retirement PASS raw
Live low open-file limit Existing input works at EMFILE; refused peers do not leak 999 responsive sessions under limit; FD count returned after refused peers closed PASS raw
Low-limit startup Clean bounded refusal, no surviving sockets/shells exit=1; no session sockets; fixture cleanup completed PASS raw
Busy D128 whole-host upgrade Exact state/child ownership and every session survive Adapter unimplemented; gate asserts failure after 999 live-session confirmations; no simulated handoff FAIL (expected red) raw
Default stripped static x86_64 size No unexplained branch growth Merge base b182529f and head both 22275888 bytes; delta +0 PASS delta; existing D243 cap overage 71584 bytes on both size

The memory curve rises early, slows near 1.9 GiB and later stays near 2 GiB; this is not evidence of an unbounded leak, but it fails the unchanged post-600-second admission thresholds. PSS/CPU counters are host-only: shells, kernel PTY memory and driver are additional. Echo numbers are the concurrent shell-command confirmation oracle, not browser input-to-photon measurements.

The prior tight-memory-cap whole-host-loss regression at 67a0e978 remains preserved and red; it was not rerun in this continuation. events3 expired waiting for the two-hour lock; events4 executed after release. No terminal-state/content oracle was authored or run as a separate phase.

Author checklist followed; Python fixtures 11/11 and fmt/diff pass. Four atomic continuation commits pushed: 5c49b2d5, 6c88ff94, 2b84fd17, 2292a1fd. Full branch-head fast gate is now in static builds; final gate output will follow. TypeScript gates are running separately so a static-size failure cannot hide them.

Perf checks complete at branch head 2292a1fd (test/bench only; no deployment). Source image 90c684a3, static research feature enabled, SHA-256 59fabf3a47ba116014d5ab8bac189f7f4c5ee1a36fbb0d6470f80e453e16aed8. VM infraternal-perf-test, kernel 6.12.111+deb13-amd64, 4 vCPU, shared flock, CPUWeight=10000, private 5-GiB ceiling. One-minute load during the soak ranged 0.00–15.67; the receipt records every sample. Standalone UNIX viewers/root-account shells; this does not prove D240/PAM integration or browser behavior. | Check | Expected | Observed | Pass/fail | Evidence | |---|---|---|---|---| | 1000-terminal, 2-hour mixed load | 900 idle, 90 one-line/s, 10 seq bursts; churn/resizes; all sessions accept input | 720 ten-second samples; 7200.0215 s; host alive; all 1000 final input confirmations | PASS completion/liveness; overall soak FAIL below | [raw](https://git.kayg.org/attachments/0f68b138-2422-44d4-8a44-1e07e3cfe02d), [log](https://git.kayg.org/attachments/0de644de-69a9-47b3-8dc7-d828b800c875) | | Memory after 600-s warm-up | Median growth and positive slope at most 1024 KiB | First/last settled-quarter PSS medians 1735776/2066976 KiB: +331200 KiB (323.44 MiB); slope +288507.78 KiB/hour; peak host PSS 2075068 KiB | FAIL | [raw](https://git.kayg.org/attachments/0f68b138-2422-44d4-8a44-1e07e3cfe02d) | | File descriptors / threads | No growth after warm-up | 3005 FDs throughout; one thread; fd_growth=0, thread_growth=0 | PASS | [raw](https://git.kayg.org/attachments/0f68b138-2422-44d4-8a44-1e07e3cfe02d) | | Echo steadiness | Last/first settled-quarter median p99 ratio at most 1.25 | 25.6712→23.8189 ms (ratio 0.928) | PASS steadiness | [raw](https://git.kayg.org/attachments/0f68b138-2422-44d4-8a44-1e07e3cfe02d) | | Native echo budget | Each post-warm-up sampled p99 at most 5 ms | Peak batch-confirmation p99 123.8522 ms; 100 concurrent printf probes/sample | FAIL | [raw](https://git.kayg.org/attachments/0f68b138-2422-44d4-8a44-1e07e3cfe02d) | | Infraternal-agent restart while busy | Real daemon rediscovers all IDs; all sessions accept input | Exact census preserved; 1000 responsive sessions | PASS | [raw](https://git.kayg.org/attachments/0de162cb-a7e8-4cf8-9056-527a43540bd3), [log](https://git.kayg.org/attachments/a8654188-2ab2-4692-ba3f-d1e4918ff2f1) | | Shell SIGKILL | Exited(-9); every other session accepts input | Victim status -9; 999 responsive siblings | PASS | [raw](https://git.kayg.org/attachments/0de162cb-a7e8-4cf8-9056-527a43540bd3) | | Shell ignores SIGHUP | Ignoring shell and siblings survive | 999 live sessions responsive | PASS | [raw](https://git.kayg.org/attachments/0de162cb-a7e8-4cf8-9056-527a43540bd3) | | Child ignores SIGHUP | Foreground child survives; siblings accept input | Captured child survived frozen Signal(HUP); 998 siblings responsive while child ran; all 999 live shells responsive after child retirement | PASS | [raw](https://git.kayg.org/attachments/0de162cb-a7e8-4cf8-9056-527a43540bd3) | | Live low open-file limit | Existing input works at EMFILE; refused peers do not leak | 999 responsive sessions under limit; FD count returned after refused peers closed | PASS | [raw](https://git.kayg.org/attachments/0de162cb-a7e8-4cf8-9056-527a43540bd3) | | Low-limit startup | Clean bounded refusal, no surviving sockets/shells | exit=1; no session sockets; fixture cleanup completed | PASS | [raw](https://git.kayg.org/attachments/0de162cb-a7e8-4cf8-9056-527a43540bd3) | | Busy D128 whole-host upgrade | Exact state/child ownership and every session survive | Adapter unimplemented; gate asserts failure after 999 live-session confirmations; no simulated handoff | FAIL (expected red) | [raw](https://git.kayg.org/attachments/0de162cb-a7e8-4cf8-9056-527a43540bd3) | | Default stripped static x86_64 size | No unexplained branch growth | Merge base b182529f and head both 22275888 bytes; delta +0 | PASS delta; existing D243 cap overage 71584 bytes on both | [size](https://git.kayg.org/attachments/aa3ceb02-8829-42d6-a17b-5108072d30de) | The memory curve rises early, slows near 1.9 GiB and later stays near 2 GiB; this is not evidence of an unbounded leak, but it fails the unchanged post-600-second admission thresholds. PSS/CPU counters are host-only: shells, kernel PTY memory and driver are additional. Echo numbers are the concurrent shell-command confirmation oracle, not browser input-to-photon measurements. The prior tight-memory-cap whole-host-loss regression at 67a0e978 remains preserved and red; it was not rerun in this continuation. events3 expired waiting for the two-hour lock; events4 executed after release. No terminal-state/content oracle was authored or run as a separate phase. Author checklist followed; Python fixtures 11/11 and fmt/diff pass. Four atomic continuation commits pushed: 5c49b2d5, 6c88ff94, 2b84fd17, 2292a1fd. Full branch-head fast gate is now in static builds; final gate output will follow. TypeScript gates are running separately so a static-size failure cannot hide them.
kayg commented 2026-10-14 08:54:35 +00:00
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Full final-head gate finding at 2292a1fd: server library suite reports 421 passed, 2 failed, 46 ignored. auth::tests::server_setup_terminal_echo_and_resume_preserve_offsets_once failed at crates/infraternal-server/src/auth/tests.rs:1740:17, server closed websocket unexpectedly: None. remote_runtime::tests::standby::control_queue::saturated_native_control_queue_does_not_hide_primary_terminal_output failed at remote_control_queue_tests.rs:216:5, assertion failed: live_connection.close_reason().is_none(). Neither failure is an eligible #118 timeout waiver; no waiver applied and no product file changed. Static ARM build is still running; full gate summary and raw log will follow. The independent TypeScript gate passes, including protocol tests 37 passed / 0 failed / 34463 assertions.

Full final-head gate finding at 2292a1fd: server library suite reports 421 passed, 2 failed, 46 ignored. auth::tests::server_setup_terminal_echo_and_resume_preserve_offsets_once failed at crates/infraternal-server/src/auth/tests.rs:1740:17, `server closed websocket unexpectedly: None`. remote_runtime::tests::standby::control_queue::saturated_native_control_queue_does_not_hide_primary_terminal_output failed at remote_control_queue_tests.rs:216:5, `assertion failed: live_connection.close_reason().is_none()`. Neither failure is an eligible #118 timeout waiver; no waiver applied and no product file changed. Static ARM build is still running; full gate summary and raw log will follow. The independent TypeScript gate passes, including protocol tests 37 passed / 0 failed / 34463 assertions.
kayg commented 2026-10-14 08:57:03 +00:00
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Finding: the initial scratch harness attached a viewer only for the short echo sample and detached it during most of each 30 s flood / 60 s light interval. Evidence was the attach and close bracketing attach_echo in matrix.py and immediate view_client.close() in server_matrix.py. The scratch harness now attaches before timing and keeps one viewer connected through the full interval; tmux attach-process CPU is recorded separately. Python syntax checks pass. No product files changed.

Finding: the initial scratch harness attached a viewer only for the short echo sample and detached it during most of each 30 s flood / 60 s light interval. Evidence was the attach and close bracketing `attach_echo` in `matrix.py` and immediate `view_client.close()` in `server_matrix.py`. The scratch harness now attaches before timing and keeps one viewer connected through the full interval; tmux attach-process CPU is recorded separately. Python syntax checks pass. No product files changed.
kayg commented 2026-10-14 08:59:16 +00:00
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Step: the run2 tmux 3.8 10k-line smoke completed on the perf VM with 80x24 and history-limit=10000. PSS 7,601 KiB, private dirty 6,216 KiB, /proc load 2.60/2.80/2.32, PTY count 0→1. The tmux capture contains 10,002 rows; the filler emits 10,000 numbered lines and the extra rows are terminal/prompt state, so I am adding a numbered-line count to the raw receipt before accepting the chart row. Receipt: smoke_r2_tmux_chart10k_n1.json. Repository head remains 12f657f788; no product files changed.

Step: the run2 tmux 3.8 10k-line smoke completed on the perf VM with 80x24 and history-limit=10000. PSS 7,601 KiB, private dirty 6,216 KiB, /proc load 2.60/2.80/2.32, PTY count 0→1. The tmux capture contains 10,002 rows; the filler emits 10,000 numbered lines and the extra rows are terminal/prompt state, so I am adding a numbered-line count to the raw receipt before accepting the chart row. Receipt: [smoke_r2_tmux_chart10k_n1.json](https://git.kayg.org/attachments/d7573c82-f62f-46bc-8cf2-0a8f3fb7cdb8). Repository head remains 12f657f7882077d54123272456541764d49a77b2; no product files changed.
kayg commented 2026-10-14 09:00:06 +00:00
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Step: rebuilt the exact origin/dev production baseline at 97366a3b64 from the clean detached scratch worktree. Static x86_64-musl artifact is 22,275,888 bytes, SHA-256 36a1864c71ef2cf572fd0252b209a709209fc65c9a0b8482677ceca5dd2e1dfa; the perf VM copy has the same size and hash. Replaced the stale VM binary (old hash 270678…19081). No product files changed; worktree head remains 12f657f7882077d54123272456541764d49a77b2.

Step: rebuilt the exact `origin/dev` production baseline at 97366a3b645905fbb3a47ebea81de27f69017e78 from the clean detached scratch worktree. Static x86_64-musl artifact is 22,275,888 bytes, SHA-256 `36a1864c71ef2cf572fd0252b209a709209fc65c9a0b8482677ceca5dd2e1dfa`; the perf VM copy has the same size and hash. Replaced the stale VM binary (old hash `270678…19081`). No product files changed; worktree head remains `12f657f7882077d54123272456541764d49a77b2`.
kayg commented 2026-10-14 09:01:39 +00:00
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Correction and completed step: the second tmux 3.8 10k smoke counted exactly 10,000 numbered filler lines; capture-pane returned 10,002 total rows, of which two were non-numbered terminal rows. This confirms the filler workload itself is exact. With history-limit=10000 and 80x24, tmux PSS was 7,571 KiB and private dirty 6,208 KiB; perf VM load average at sampling was 2.72/2.74/2.36 and PTY count was 0→1. Raw receipt: smoke_r2b_tmux_chart10k_n1.json.

Correction and completed step: the second tmux 3.8 10k smoke counted exactly 10,000 numbered filler lines; `capture-pane` returned 10,002 total rows, of which two were non-numbered terminal rows. This confirms the filler workload itself is exact. With history-limit=10000 and 80x24, tmux PSS was 7,571 KiB and private dirty 6,208 KiB; perf VM load average at sampling was 2.72/2.74/2.36 and PTY count was 0→1. Raw receipt: [smoke_r2b_tmux_chart10k_n1.json](https://git.kayg.org/attachments/d8eed1f0-acf0-4a26-862d-75eb788a3e64).
kayg commented 2026-10-14 09:02:18 +00:00
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Steps pushed to process-per-user: 6bbe616e imports the real-PTY reliability target (2 passed, 0 failed, 1 subprocess entry ignored); 00799467 imports the reproducible ppu-soak driver/wrapper/tests through 2292a1fd (11 Python fixture tests passed). Feature all-target Clippy, fmt and diff checks pass. Terminal isolation code remains under validation; the production-recipe static prototype is compiling. No default switch or deploy.

Steps pushed to process-per-user: 6bbe616e imports the real-PTY reliability target (2 passed, 0 failed, 1 subprocess entry ignored); 00799467 imports the reproducible ppu-soak driver/wrapper/tests through 2292a1fd (11 Python fixture tests passed). Feature all-target Clippy, fmt and diff checks pass. Terminal isolation code remains under validation; the production-recipe static prototype is compiling. No default switch or deploy.
kayg commented 2026-10-14 09:05:01 +00:00
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Finding: the production-server 10k smoke aborted before opening terminals or taking measurements. The synthetic owner registration completed, but the harness /auth/unlock-finish request returned HTTP 401 at server_matrix.py:404; the wrapper removed the fixture and emitted no row JSON. The attached traceback contains no token/cookie values. This is the benchmark bootstrap path under investigation; product code remains untouched. Receipt: smoke_r2_infraternal_chart10k_n1.json.stderr.log.

Finding: the production-server 10k smoke aborted before opening terminals or taking measurements. The synthetic owner registration completed, but the harness `/auth/unlock-finish` request returned HTTP 401 at `server_matrix.py:404`; the wrapper removed the fixture and emitted no row JSON. The attached traceback contains no token/cookie values. This is the benchmark bootstrap path under investigation; product code remains untouched. Receipt: [smoke_r2_infraternal_chart10k_n1.json.stderr.log](https://git.kayg.org/attachments/be5e80ba-f7a8-456a-985a-2e1fc3d666a8).
kayg commented 2026-10-14 09:07:05 +00:00
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Update: the failed production fixture constructor left its server and embedded child running after /auth/unlock-finish returned 401. I matched them to this row by the exact bench-vs-tmux/bin/infra-dev executable and the removed /r/server-* data path, sent SIGTERM to server PID 711653, and verified server PID 711653 and child PID 711660 both exited. The harness will now clean up inside __init__ on bootstrap exceptions before the corrected login smoke.

Update: the failed production fixture constructor left its server and embedded child running after `/auth/unlock-finish` returned 401. I matched them to this row by the exact `bench-vs-tmux/bin/infra-dev` executable and the removed `/r/server-*` data path, sent SIGTERM to server PID 711653, and verified server PID 711653 and child PID 711660 both exited. The harness will now clean up inside `__init__` on bootstrap exceptions before the corrected login smoke.
kayg commented 2026-10-14 09:21:06 +00:00
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Finding: after the corrected login, the production 10k smoke reached terminal setup but create_fill timed out waiting for the state-side acknowledgment at server_matrix.py:526; the runner produced no measurement row. The initial command helper detached immediately, so the retry will keep the WebSocket stream attached and drain its PTY output while waiting for the sideband file. Constructor-failure cleanup worked: the VM now has no process using this job’s exact infra-dev artifact. Raw traceback: smoke_r2_infraternal_chart10k_n1b.json.stderr.log.

Finding: after the corrected login, the production 10k smoke reached terminal setup but `create_fill` timed out waiting for the state-side acknowledgment at `server_matrix.py:526`; the runner produced no measurement row. The initial command helper detached immediately, so the retry will keep the WebSocket stream attached and drain its PTY output while waiting for the sideband file. Constructor-failure cleanup worked: the VM now has no process using this job’s exact `infra-dev` artifact. Raw traceback: [smoke_r2_infraternal_chart10k_n1b.json.stderr.log](https://git.kayg.org/attachments/01f1758d-a325-491a-b4fd-9e3868cd9df2).
kayg commented 2026-10-14 09:22:28 +00:00
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Full gate milestone at 2292a1fd: completed, exit 1. Unwaived failures are the two server library assertions recorded above plus D243 static caps. x86_64=22275888 / 22204304 bytes (+71584); ARM=19704712 / 19638744 bytes (+65968). x86 merge-base delta remains +0 bytes; ARM merge-base delta was not measured, so the ARM cap overage is not attributed to this continuation. Production trust/static linkage and native x86 key-memory checks passed.

TypeScript gate passed independently: protocol tests 37 pass / 0 fail / 34463 assertions, compiler/tracer/precompression/transfer checks pass.

Retrying the unchanged head’s full gate in systemd-run --user --scope -p CPUWeight=10000, using compiled caches; no limits or assertions changed, no standalone terminal-content phase run. This checks whether the server failures repeat without claiming a load cause or waiving them.

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | FAIL (101)   |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

verify-fast-final-head.log
typescript-gate.log

Full gate milestone at 2292a1fd: completed, exit 1. Unwaived failures are the two server library assertions recorded above plus D243 static caps. x86_64=22275888 / 22204304 bytes (+71584); ARM=19704712 / 19638744 bytes (+65968). x86 merge-base delta remains +0 bytes; ARM merge-base delta was not measured, so the ARM cap overage is not attributed to this continuation. Production trust/static linkage and native x86 key-memory checks passed. TypeScript gate passed independently: protocol tests 37 pass / 0 fail / 34463 assertions, compiler/tracer/precompression/transfer checks pass. Retrying the unchanged head’s full gate in systemd-run --user --scope -p CPUWeight=10000, using compiled caches; no limits or assertions changed, no standalone terminal-content phase run. This checks whether the server failures repeat without claiming a load cause or waiving them. ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | FAIL (101) | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` [verify-fast-final-head.log](https://git.kayg.org/attachments/28f8a33c-c034-4f14-97e5-43a0ada8f398) [typescript-gate.log](https://git.kayg.org/attachments/8d36250d-e9b3-4ce8-be70-1bd189c157a6)
kayg commented 2026-10-14 09:37:06 +00:00
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Finished reliability continuation: ppu-soak, head 2292a1fd5c; four atomic test/bench commits pushed. No deployment or product-code changes. Repository code diff is clean; the pre-existing untracked scripts/pycache/ remains untouched.

The full two-hour/1000-terminal perf run completed with 720 ten-second samples and all 1000 final input confirmations. FD/thread growth is zero. Admission remains RED: PSS settled-quarter growth +331200 KiB (+323.44 MiB), slope +288507.78 KiB/hour; peak batch echo p99 123.8522 ms against 5 ms. Echo steadiness itself passes (25.6712→23.8189 ms). Detailed expected/observed/pass-fail/evidence table is in the previous perf comment.

All implemented process-event cases pass at 1000 sessions: real infraternal-agent restart/census, shell SIGKILL, shell/foreground-child ignored HUP, live EMFILE and bounded low-limit startup. Busy D128 whole-host handoff stays an explicit failing gate because the adapter is unimplemented; no descriptor-only success claim. The earlier memory-cap/whole-host-loss red regression 67a0e978 remains preserved.

Final weighted scripts/verify fast on this head: exit 1, only static size fails. The two earlier server assertions did not repeat (423 passed / 0 failed / 46 ignored in the server library suite). No waiver applied. x86 static default=22275888 bytes; merge base=22275888; delta +0 bytes. Existing caps still reject x86 +71584 bytes and ARM 19704712 / 19638744 (+65968). ARM merge-base delta was not measured. Product adoption/green size ceilings require owner/orchestrator size work or integration onto a corrected baseline; this lane does not raise caps.

Verbatim final gate summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Independent TypeScript verification passed all checks, including:

 37 pass
 0 fail
 34463 expect() calls

typescript-gate.log

Final raw gate / author checklist:
verify-fast-weighted-head.log
reviewer-checklist.txt

Perf raw data/logs:
samples.jsonl.txt
soak.log
samples.jsonl.txt
process-events.log

Exact static recipe/size receipt:
static-size-comparison.txt

Python fixtures: 11 passed, including the 110-byte socket-path red-to-green repair. Author checklist completed; standalone root-account/UNIX viewers do not prove D240/PAM or browser integration. Only this job’s temporary build targets and baseline source are being removed after preserving the attached receipts. No issue closed.

Finished reliability continuation: ppu-soak, head 2292a1fd5cb2dfd9a498f4d0bd1653c742c3e182; four atomic test/bench commits pushed. No deployment or product-code changes. Repository code diff is clean; the pre-existing untracked scripts/__pycache__/ remains untouched. The full two-hour/1000-terminal perf run completed with 720 ten-second samples and all 1000 final input confirmations. FD/thread growth is zero. Admission remains RED: PSS settled-quarter growth +331200 KiB (+323.44 MiB), slope +288507.78 KiB/hour; peak batch echo p99 123.8522 ms against 5 ms. Echo steadiness itself passes (25.6712→23.8189 ms). Detailed expected/observed/pass-fail/evidence table is in the previous perf comment. All implemented process-event cases pass at 1000 sessions: real infraternal-agent restart/census, shell SIGKILL, shell/foreground-child ignored HUP, live EMFILE and bounded low-limit startup. Busy D128 whole-host handoff stays an explicit failing gate because the adapter is unimplemented; no descriptor-only success claim. The earlier memory-cap/whole-host-loss red regression 67a0e978 remains preserved. Final weighted scripts/verify fast on this head: exit 1, only static size fails. The two earlier server assertions did not repeat (423 passed / 0 failed / 46 ignored in the server library suite). No waiver applied. x86 static default=22275888 bytes; merge base=22275888; delta +0 bytes. Existing caps still reject x86 +71584 bytes and ARM 19704712 / 19638744 (+65968). ARM merge-base delta was not measured. Product adoption/green size ceilings require owner/orchestrator size work or integration onto a corrected baseline; this lane does not raise caps. Verbatim final gate summary: ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` Independent TypeScript verification passed all checks, including: ```text 37 pass 0 fail 34463 expect() calls ``` [typescript-gate.log](https://git.kayg.org/attachments/8d36250d-e9b3-4ce8-be70-1bd189c157a6) Final raw gate / author checklist: [verify-fast-weighted-head.log](https://git.kayg.org/attachments/015b339a-c35b-4401-9e7a-315fed02ba3f) [reviewer-checklist.txt](https://git.kayg.org/attachments/7f084036-f1dc-4475-b1bd-299a50bfa4b0) Perf raw data/logs: [samples.jsonl.txt](https://git.kayg.org/attachments/0f68b138-2422-44d4-8a44-1e07e3cfe02d) [soak.log](https://git.kayg.org/attachments/0de644de-69a9-47b3-8dc7-d828b800c875) [samples.jsonl.txt](https://git.kayg.org/attachments/0de162cb-a7e8-4cf8-9056-527a43540bd3) [process-events.log](https://git.kayg.org/attachments/a8654188-2ab2-4692-ba3f-d1e4918ff2f1) Exact static recipe/size receipt: [static-size-comparison.txt](https://git.kayg.org/attachments/aa3ceb02-8829-42d6-a17b-5108072d30de) Python fixtures: 11 passed, including the 110-byte socket-path red-to-green repair. Author checklist completed; standalone root-account/UNIX viewers do not prove D240/PAM or browser integration. Only this job’s temporary build targets and baseline source are being removed after preserving the attached receipts. No issue closed.
kayg commented 2026-10-14 09:38:20 +00:00
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Cleanup complete: removed only this job’s local target, size-target, fuzz-target, panic-target, test-target and archived size-base source after preserving evidence/baseline image. Head 2292a1fd5c matches origin/ppu-soak. Pre-existing scripts/pycache/ left untouched; no tracked edits remain. Perf measurements and gate receipts are attached on #205.

Cleanup complete: removed only this job’s local target, size-target, fuzz-target, panic-target, test-target and archived size-base source after preserving evidence/baseline image. Head 2292a1fd5cb2dfd9a498f4d0bd1653c742c3e182 matches origin/ppu-soak. Pre-existing scripts/__pycache__/ left untouched; no tracked edits remain. Perf measurements and gate receipts are attached on #205.
kayg commented 2026-10-14 09:47:46 +00:00
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Finding: the production shell completed the 10,000-line command, but the attached WebSocket peer drained only 309,108 bytes against the expected 740,000 before its 300 s deadline (ack_seen=True). The row emitted no measurement JSON and is invalid. I’m checking the protocol output-credit path and will retry after the viewer drains the full stream. No product files changed. Traceback: smoke_r2_infraternal_chart10k_n1d.json.stderr.log.

Finding: the production shell completed the 10,000-line command, but the attached WebSocket peer drained only 309,108 bytes against the expected 740,000 before its 300 s deadline (`ack_seen=True`). The row emitted no measurement JSON and is invalid. I’m checking the protocol output-credit path and will retry after the viewer drains the full stream. No product files changed. Traceback: [smoke_r2_infraternal_chart10k_n1d.json.stderr.log](https://git.kayg.org/attachments/2643a7bd-f18b-4d3d-abb7-7aa9418747a3).
kayg commented 2026-10-14 09:50:38 +00:00
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Harness finding: the synthetic WebSocket viewer sent one 8 MiB Credit frame and never replenished consumed output. The real terminal client grants a 1 MiB window and returns credit as output is consumed (apps/tracer/src/terminal.ts:963, 1338-1345). I changed the scratch peer to that rolling-credit behavior and to report a terminal Close immediately. The 309,108/740,000-byte smoke remains invalid and will be rerun; product code is unchanged.

Harness finding: the synthetic WebSocket viewer sent one 8 MiB Credit frame and never replenished consumed output. The real terminal client grants a 1 MiB window and returns credit as output is consumed (`apps/tracer/src/terminal.ts:963, 1338-1345`). I changed the scratch peer to that rolling-credit behavior and to report a terminal Close immediately. The 309,108/740,000-byte smoke remains invalid and will be rerun; product code is unchanged.
kayg commented 2026-10-14 10:05:07 +00:00
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Finding: with browser-style rolling credit, the next production 10k smoke did not observe the shell-side started receipt within 30 s; no measurement row was emitted. The prior 8 MiB one-shot peer did reach that receipt but then stopped draining output. I added per-stream input-ack counters to distinguish rejected input from a shell-side problem, and will run the empty production startup row separately before retrying the fill. Traceback: smoke_r2_infraternal_chart10k_n1e.json.stderr.log.

Finding: with browser-style rolling credit, the next production 10k smoke did not observe the shell-side `started` receipt within 30 s; no measurement row was emitted. The prior 8 MiB one-shot peer did reach that receipt but then stopped draining output. I added per-stream input-ack counters to distinguish rejected input from a shell-side problem, and will run the empty production startup row separately before retrying the fill. Traceback: [smoke_r2_infraternal_chart10k_n1e.json.stderr.log](https://git.kayg.org/attachments/c8d9be93-2b59-44ad-bf09-c542f796c6bc).
kayg commented 2026-10-14 10:15:34 +00:00
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Finding: the first production empty-session startup row is invalid and excluded. It recorded PSS 17,009 KiB with server=1, agent=0, shim=0 while the kernel PTY count rose 1→2; the row took 392.946 s because the shim census timeout was silent. Linux records children under the specific spawning thread, but the harness walked only the process leader thread. Updated the harness to traverse every /proc//task/*/children entry, fail incomplete role censuses, and include those descendants in cleanup. Raw rejected row: pilot_invalid_chart_start_empty_shim_thread_census.json.

Finding: the first production empty-session startup row is invalid and excluded. It recorded PSS 17,009 KiB with server=1, agent=0, shim=0 while the kernel PTY count rose 1→2; the row took 392.946 s because the shim census timeout was silent. Linux records children under the specific spawning thread, but the harness walked only the process leader thread. Updated the harness to traverse every /proc/<pid>/task/*/children entry, fail incomplete role censuses, and include those descendants in cleanup. Raw rejected row: [pilot_invalid_chart_start_empty_shim_thread_census.json](https://git.kayg.org/attachments/72e0a847-086a-44a9-a2eb-20c2bd00c4ed).
kayg commented 2026-10-14 10:18:53 +00:00
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Code steps pushed: 094259de allocation owner (3 allocator tests); 82b14ed7 explicitly tagged native page-pool adapter; 31fa9968 streaming limits (5 boundary tests); 30b90b50 integration and snapshot continuation. Shared VT native requests are capped at 8 MiB including transient allocations, headers and mapping prefixes; ordinary payload/metadata is capped at 256 KiB. OSC/DCS/APC/PM/SOS carry is <=4 KiB. Oversized strings retain syntax until their true terminator, including snapshots between ST bytes; C0/C1 bypass regressions preceded fixes. Native resize tombstones release their owner list without graph traversal.

Exact staged integration gate: fmt PASS, feature all-target Clippy PASS, 99 unit tests passed / 0 failed / 13 explicit nightly/measurement ignores. Later peer/input accounting remains a separate uncommitted step. No perf after-fix claim yet: the static cgroup run remains in its prescribed one-hour lock wait. Defaults unchanged, no deploy.

index-p0-gate.log
discard-snapshot-red2.log
discard-st-red.log
discard-st-green.log
escape-c0-red.log
c1-red.log

Code steps pushed: 094259de allocation owner (3 allocator tests); 82b14ed7 explicitly tagged native page-pool adapter; 31fa9968 streaming limits (5 boundary tests); 30b90b50 integration and snapshot continuation. Shared VT native requests are capped at 8 MiB including transient allocations, headers and mapping prefixes; ordinary payload/metadata is capped at 256 KiB. OSC/DCS/APC/PM/SOS carry is <=4 KiB. Oversized strings retain syntax until their true terminator, including snapshots between ST bytes; C0/C1 bypass regressions preceded fixes. Native resize tombstones release their owner list without graph traversal. Exact staged integration gate: fmt PASS, feature all-target Clippy PASS, 99 unit tests passed / 0 failed / 13 explicit nightly/measurement ignores. Later peer/input accounting remains a separate uncommitted step. No perf after-fix claim yet: the static cgroup run remains in its prescribed one-hour lock wait. Defaults unchanged, no deploy. [index-p0-gate.log](https://git.kayg.org/attachments/2365d885-277b-4b12-8ee5-89d6226284ab) [discard-snapshot-red2.log](https://git.kayg.org/attachments/17919bff-0c76-4503-b3d8-473935e3e10f) [discard-st-red.log](https://git.kayg.org/attachments/ed259989-37e4-488c-b785-733a788cc5fc) [discard-st-green.log](https://git.kayg.org/attachments/3a3521c0-6454-4bad-ba5d-948e23017015) [escape-c0-red.log](https://git.kayg.org/attachments/87a5c596-c1b5-42e3-b8f8-3598fead5543) [c1-red.log](https://git.kayg.org/attachments/2a6f64a7-c270-48cc-814c-7dad3a9bb212)
kayg commented 2026-10-14 10:19:13 +00:00
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Completed process-census correction; repo HEAD remains 12f657f788 (measurement-only). Scratch harness hashes: matrix.py efb32163e8b73cc9b6d1d2c7bd6d7a3d1dfb2612041df0cb24e01b7b178c8006; server_matrix.py 8a038895191b0e5fd935e3893cd32a2f6d5996080f4b2f0502a3983b49cc03e6. Fresh production empty-session row records server 15,241 KiB PSS / 5,272 KiB private dirty; embedded infraternal agent 5,325 / 3,160; shim 3,017 / 1,080. Total 23,583 / 9,512 KiB. PTY count 1→2. Perf VM load before interval: 3.52 2.43 1.59. Raw: chart_start_empty_shim.json.

Completed process-census correction; repo HEAD remains 12f657f7882077d54123272456541764d49a77b2 (measurement-only). Scratch harness hashes: matrix.py efb32163e8b73cc9b6d1d2c7bd6d7a3d1dfb2612041df0cb24e01b7b178c8006; server_matrix.py 8a038895191b0e5fd935e3893cd32a2f6d5996080f4b2f0502a3983b49cc03e6. Fresh production empty-session row records server 15,241 KiB PSS / 5,272 KiB private dirty; embedded infraternal agent 5,325 / 3,160; shim 3,017 / 1,080. Total 23,583 / 9,512 KiB. PTY count 1→2. Perf VM load before interval: 3.52 2.43 1.59. Raw: [chart_start_empty_shim.json](https://git.kayg.org/attachments/2eea99b2-90ce-452e-99e0-4f7aae5645b6).
kayg commented 2026-10-14 10:23:28 +00:00
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Functional gate scheduling finding: the complete feature test invocation passed its 100-unit-test binary, then could not execute detach-8f9a96c832eecbdf (ENOENT; integration test never ran). A concurrent all-target Clippy/index validation used the same Cargo target after test compilation. I am serializing full Cargo checks and tests on this target and will rerun the integration suite; this failure is not waived or reported as a green suite.

Functional gate scheduling finding: the complete feature test invocation passed its 100-unit-test binary, then could not execute detach-8f9a96c832eecbdf (ENOENT; integration test never ran). A concurrent all-target Clippy/index validation used the same Cargo target after test compilation. I am serializing full Cargo checks and tests on this target and will rerun the integration suite; this failure is not waived or reported as a green suite.
kayg commented 2026-10-14 10:25:34 +00:00
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Finding: production origin/dev chart_filled_10k row was rejected before sampling. While waiting for the started sideband marker, the authenticated viewer received WebSocket close code 1013; no JSON metric row was produced. The tmux and PPU startup rows completed (2,451 and 5,076 KiB PSS); production startup remains 23,583 KiB. Captured harness traceback: chart_filled_10k_shim.json.stderr.log. I’m auditing the production client credit and session stream setup before retrying.

Finding: production origin/dev chart_filled_10k row was rejected before sampling. While waiting for the `started` sideband marker, the authenticated viewer received WebSocket close code 1013; no JSON metric row was produced. The tmux and PPU startup rows completed (2,451 and 5,076 KiB PSS); production startup remains 23,583 KiB. Captured harness traceback: [chart_filled_10k_shim.json.stderr.log](https://git.kayg.org/attachments/53b5d3e8-2e87-4db4-923e-1402e3656097). I’m auditing the production client credit and session stream setup before retrying.
kayg commented 2026-10-14 10:31:45 +00:00
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Completed production filler diagnostic on perf VM: 100 numbered 72-column lines completed with an authenticated WebSocket viewer; expected PTY payload 7,400 bytes, viewer drained 7,418 bytes including prompt/command output. Process boundary during sample: server 15,109 KiB PSS, embedded infraternal agent 5,337 KiB, shim 3,301 KiB; total 23,747 KiB. Load before interval 3.41 3.47 2.66. This confirms open/attach/command/ack work at small output; the 10k row still fails with code 1013 and is being isolated by output volume. Raw diagnostic: diagnostic_chart_fill_100_shim.json.

Completed production filler diagnostic on perf VM: 100 numbered 72-column lines completed with an authenticated WebSocket viewer; expected PTY payload 7,400 bytes, viewer drained 7,418 bytes including prompt/command output. Process boundary during sample: server 15,109 KiB PSS, embedded infraternal agent 5,337 KiB, shim 3,301 KiB; total 23,747 KiB. Load before interval 3.41 3.47 2.66. This confirms open/attach/command/ack work at small output; the 10k row still fails with code 1013 and is being isolated by output volume. Raw diagnostic: [diagnostic_chart_fill_100_shim.json](https://git.kayg.org/attachments/51353ad2-c186-4b13-b69a-d012a1273326).
kayg commented 2026-10-14 10:33:42 +00:00
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Finding: rejected the apparent production 10k row. Although the filler invocation completed, its raw metadata says 2,024 lines at 80 columns (165,968 expected bytes), because the remote parser defaulted --lines to 2,024 and the chart10k fallback treated that default as explicit. It measured 25,599 KiB PSS / 11,336 KiB private dirty at load 2.69 3.35 2.71, but these numbers are not the required chart workload. Raw rejected row: pilot_invalid_chart10k_shim_used_2024_lines.json. I’m making chart10k defaults explicit and will require its recorded filler_spec to be exactly 10,000 × 72 before accepting the result.

Finding: rejected the apparent production 10k row. Although the filler invocation completed, its raw metadata says 2,024 lines at 80 columns (165,968 expected bytes), because the remote parser defaulted `--lines` to 2,024 and the chart10k fallback treated that default as explicit. It measured 25,599 KiB PSS / 11,336 KiB private dirty at load 2.69 3.35 2.71, but these numbers are not the required chart workload. Raw rejected row: [pilot_invalid_chart10k_shim_used_2024_lines.json](https://git.kayg.org/attachments/e64f2edb-bd2d-43f6-bbd4-70b9aa8bbe14). I’m making chart10k defaults explicit and will require its recorded filler_spec to be exactly 10,000 × 72 before accepting the result.
kayg commented 2026-10-14 10:42:27 +00:00
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Finding: production chart10k is not a valid 10k-held-screen row yet. The exact filler’s completion ack was present, but after 300 s the authenticated viewer had received only 156,380 bytes / 2,113 ordered numbered lines; the shell was still alive and the input end was 278. No memory row was emitted. This points to retained-output or output-stream truncation rather than command failure. Attached traceback and live process census: chart_filled_10k_shim.json.stderr.log. I’m locating the buffer limit and will report retained line count separately if it cannot hold the published 10k case without product changes.

Finding: production `chart10k` is not a valid 10k-held-screen row yet. The exact filler’s completion ack was present, but after 300 s the authenticated viewer had received only 156,380 bytes / 2,113 ordered numbered lines; the shell was still alive and the input end was 278. No memory row was emitted. This points to retained-output or output-stream truncation rather than command failure. Attached traceback and live process census: [chart_filled_10k_shim.json.stderr.log](https://git.kayg.org/attachments/48a78fd6-255a-4470-bfa8-b6182da14640). I’m locating the buffer limit and will report retained line count separately if it cannot hold the published 10k case without product changes.
kayg commented 2026-10-14 10:43:16 +00:00
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Steps pushed: 9cf63afc bounds shared-host input ownership to 1,024 segments without changing accepted offsets on refusal; 03898da8 adds session accounting and a 4-MiB aggregate peer-storage budget. Each exact staged slice passed fmt, feature all-target Clippy and 100 unit tests / 0 failures / 13 explicit measurement/nightly ignores.

First static P0 candidate (SHA 403877b87bd44f4b6955f3b48e79968a7e0f9c2b6f2ff809e13e86b8a22435c8) passed the real 32-MiB OSC cgroup reproduction: 20/20 responsive, working 51,122,176 B, cap 67,899,392 B, peak 53,272,576 B, memory.events max/oom/oom_kill all zero. Perf VM 4 vCPU, load 2.37/0.92/0.84. This image preceded the final fixed 8-MiB ceiling and UnsafeCell accounting change; a current-head static repeat is required.

Additional real finding: the public C mouse probe against the exact feature archive aborts on ghostty_terminal_new(NULL). The previous integration target selected the newest archive, which could be a default build and hide this feature-only fault. The test now binds env!(OUT_DIR) explicitly and writes receipts outside checkout. Fix preserves the native default page allocator for a null/default C allocator; shared-host engines still take the tagged path. Native rebuild and rerun pending. The initial integration failure was missing zig in PATH; with the pinned Zig PATH, detach (2), mouse (1), real-PTY reliability (2) and exit descriptor (2) tests pass. The unignored memory test explicitly skips outside its authorised perf fixture and is not counted as cgroup proof.

Steps pushed: 9cf63afc bounds shared-host input ownership to 1,024 segments without changing accepted offsets on refusal; 03898da8 adds session accounting and a 4-MiB aggregate peer-storage budget. Each exact staged slice passed fmt, feature all-target Clippy and 100 unit tests / 0 failures / 13 explicit measurement/nightly ignores. First static P0 candidate (SHA 403877b87bd44f4b6955f3b48e79968a7e0f9c2b6f2ff809e13e86b8a22435c8) passed the real 32-MiB OSC cgroup reproduction: 20/20 responsive, working 51,122,176 B, cap 67,899,392 B, peak 53,272,576 B, memory.events max/oom/oom_kill all zero. Perf VM 4 vCPU, load 2.37/0.92/0.84. This image preceded the final fixed 8-MiB ceiling and UnsafeCell accounting change; a current-head static repeat is required. Additional real finding: the public C mouse probe against the exact feature archive aborts on ghostty_terminal_new(NULL). The previous integration target selected the newest archive, which could be a default build and hide this feature-only fault. The test now binds env!(OUT_DIR) explicitly and writes receipts outside checkout. Fix preserves the native default page allocator for a null/default C allocator; shared-host engines still take the tagged path. Native rebuild and rerun pending. The initial integration failure was missing zig in PATH; with the pinned Zig PATH, detach (2), mouse (1), real-PTY reliability (2) and exit descriptor (2) tests pass. The unignored memory test explicitly skips outside its authorised perf fixture and is not counted as cgroup proof.
kayg commented 2026-10-14 10:45:58 +00:00
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Build-directory finding: the mouse regression retry failed before execution. sccache returned exit 254 for cfg-if/arrayvec while Cargo could not create their fingerprint output files. The next retry compiled the native adapter but failed to link OUT_DIR/native because the Cargo out directory no longer existed. /dev/sda1 still has 53 GiB free and 27,850,874 free inodes. No auth error or credential investigation occurred. I am retrying in the job-specific build-owned directory with the same pinned tools/native cache; the native compile and public C constructor regression remain required. The separate direct public-feature mouse probe already reproduced the null-allocator abort before the adapter fix.

Build-directory finding: the mouse regression retry failed before execution. sccache returned exit 254 for cfg-if/arrayvec while Cargo could not create their fingerprint output files. The next retry compiled the native adapter but failed to link OUT_DIR/native because the Cargo out directory no longer existed. /dev/sda1 still has 53 GiB free and 27,850,874 free inodes. No auth error or credential investigation occurred. I am retrying in the job-specific build-owned directory with the same pinned tools/native cache; the native compile and public C constructor regression remain required. The separate direct public-feature mouse probe already reproduced the null-allocator abort before the adapter fix.
kayg commented 2026-10-14 10:52:01 +00:00
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Follow-up finding: the exact 10k command was still running when the server closed its attachment with transient code 1013 at 185,758 output bytes / 2,510 ordered lines; its completion ack was not yet present and the bash process was running. The client had acknowledged all 278 input bytes. This is consistent with the application’s transient stream-retry path, so the scratch WebSocket peer now reattaches the same stream at its consumed output cursor and acknowledged input cursor, replaying only pending input, and records retry count. Raw failed row log: chart_filled_10k_shim.json.stderr.log.

Follow-up finding: the exact 10k command was still running when the server closed its attachment with transient code 1013 at 185,758 output bytes / 2,510 ordered lines; its completion ack was not yet present and the bash process was running. The client had acknowledged all 278 input bytes. This is consistent with the application’s transient stream-retry path, so the scratch WebSocket peer now reattaches the same stream at its consumed output cursor and acknowledged input cursor, replaying only pending input, and records retry count. Raw failed row log: [chart_filled_10k_shim.json.stderr.log](https://git.kayg.org/attachments/7663f27b-e90e-44d0-af17-82525555a4fc).
kayg commented 2026-10-14 10:54:23 +00:00
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Completed exact production chart_filled_10k row. The remote script was validated as 10,000 ordered numbered lines × 72 columns; authenticated viewer drained 740,018 bytes (740,000 filler bytes plus shell output), with 3 transient stream retries. Process memory: server 15,845 KiB PSS / 5,876 private dirty; embedded infraternal agent 5,345 / 3,180; shim 11,901 / 9,772; total 33,091 / 18,828 KiB. PTY count 1→2; load 2.59 2.46 2.45; cgroup memory 27,410,432 bytes, slab 444,400. Raw row: chart_filled_10k_shim.json.

Completed exact production chart_filled_10k row. The remote script was validated as 10,000 ordered numbered lines × 72 columns; authenticated viewer drained 740,018 bytes (740,000 filler bytes plus shell output), with 3 transient stream retries. Process memory: server 15,845 KiB PSS / 5,876 private dirty; embedded infraternal agent 5,345 / 3,180; shim 11,901 / 9,772; total 33,091 / 18,828 KiB. PTY count 1→2; load 2.59 2.46 2.45; cgroup memory 27,410,432 bytes, slab 444,400. Raw row: [chart_filled_10k_shim.json](https://git.kayg.org/attachments/04b226b7-e42b-4d2b-9233-f3f473923a71).
kayg commented 2026-10-14 10:56:10 +00:00
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Steps pushed: 9cf63afc bounds shared-host input ownership to 1,024 segments without changing accepted offsets on refusal; 03898da8 adds session accounting and a 4-MiB aggregate peer-storage budget. Each exact staged slice passed fmt, feature all-target Clippy and 100 unit tests / 0 failures / 13 explicit measurement/nightly ignores.

First static P0 candidate (SHA 403877b87bd44f4b6955f3b48e79968a7e0f9c2b6f2ff809e13e86b8a22435c8) passed the real 32-MiB OSC cgroup reproduction: 20/20 responsive, working 51,122,176 B, cap 67,899,392 B, peak 53,272,576 B, memory.events max/oom/oom_kill all zero. Perf VM 4 vCPU, load 2.37/0.92/0.84. This image preceded the final fixed 8-MiB ceiling and UnsafeCell accounting change; a current-head static repeat is required.

Additional real finding: the public C mouse probe against the exact feature archive aborts on ghostty_terminal_new(NULL). The previous integration target selected the newest archive, which could be a default build and hide this feature-only fault. The test now binds env!(OUT_DIR) explicitly and writes receipts outside checkout. Fix preserves the native default page allocator for a null/default C allocator; shared-host engines still take the tagged path. Native rebuild and rerun pending. The initial integration failure was missing zig in PATH; with the pinned Zig PATH, detach (2), mouse (1), real-PTY reliability (2) and exit descriptor (2) tests pass. The unignored memory test explicitly skips outside its authorised perf fixture and is not counted as cgroup proof.

Steps pushed: 9cf63afc bounds shared-host input ownership to 1,024 segments without changing accepted offsets on refusal; 03898da8 adds session accounting and a 4-MiB aggregate peer-storage budget. Each exact staged slice passed fmt, feature all-target Clippy and 100 unit tests / 0 failures / 13 explicit measurement/nightly ignores. First static P0 candidate (SHA 403877b87bd44f4b6955f3b48e79968a7e0f9c2b6f2ff809e13e86b8a22435c8) passed the real 32-MiB OSC cgroup reproduction: 20/20 responsive, working 51,122,176 B, cap 67,899,392 B, peak 53,272,576 B, memory.events max/oom/oom_kill all zero. Perf VM 4 vCPU, load 2.37/0.92/0.84. This image preceded the final fixed 8-MiB ceiling and UnsafeCell accounting change; a current-head static repeat is required. Additional real finding: the public C mouse probe against the exact feature archive aborts on ghostty_terminal_new(NULL). The previous integration target selected the newest archive, which could be a default build and hide this feature-only fault. The test now binds env!(OUT_DIR) explicitly and writes receipts outside checkout. Fix preserves the native default page allocator for a null/default C allocator; shared-host engines still take the tagged path. Native rebuild and rerun pending. The initial integration failure was missing zig in PATH; with the pinned Zig PATH, detach (2), mouse (1), real-PTY reliability (2) and exit descriptor (2) tests pass. The unignored memory test explicitly skips outside its authorised perf fixture and is not counted as cgroup proof.
kayg commented 2026-10-14 10:58:24 +00:00
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Finding: the first process-per-user 10k row did not produce an accepted record. Its fill path completed, but the retention validator requested a full VT Snapshot and got shim error frame 0x7f; this snapshot is not needed to count retained raw history and may exceed its frame budget. Replaced the check with a bounded ReadFrom walk over the raw ring, counting numbered lines incrementally; rerunning the host row. Traceback: chart_filled_10k_host.json.stderr.log.

Finding: the first process-per-user 10k row did not produce an accepted record. Its fill path completed, but the retention validator requested a full VT Snapshot and got shim error frame 0x7f; this snapshot is not needed to count retained raw history and may exceed its frame budget. Replaced the check with a bounded ReadFrom walk over the raw ring, counting numbered lines incrementally; rerunning the host row. Traceback: [chart_filled_10k_host.json.stderr.log](https://git.kayg.org/attachments/55ea3d54-6061-4b37-82e9-11e8adc01b48).
kayg commented 2026-10-14 11:02:18 +00:00
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Completed exact process-per-user chart_filled_10k row. Raw ring retention was 740,026 bytes and 10,000 ordered numbered lines × 72 columns. Standalone host process PSS 14,356 KiB / private dirty 9,652 KiB; load before interval 1.02 1.31 1.83; PTY count 1→2; cgroup memory 23,764,992 bytes, slab 124,352. The research branch launch path does not include the server or embedded infraternal agent. Raw: chart_filled_10k_host.json.

Completed exact process-per-user chart_filled_10k row. Raw ring retention was 740,026 bytes and 10,000 ordered numbered lines × 72 columns. Standalone host process PSS 14,356 KiB / private dirty 9,652 KiB; load before interval 1.02 1.31 1.83; PTY count 1→2; cgroup memory 23,764,992 bytes, slab 124,352. The research branch launch path does not include the server or embedded infraternal agent. Raw: [chart_filled_10k_host.json](https://git.kayg.org/attachments/b6eb31c5-080f-4177-9443-70198f356aa8).
kayg commented 2026-10-14 11:11:50 +00:00
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Finding: first 50-terminal client row did not produce a valid measurement. The standalone host filled the 50 terminals, then closed the local peer socket on the first echo input (BrokenPipeError at matrix.py:370); no row was written. See attached raw stderr log. This failed attempt is excluded.

Finding: first 50-terminal client row did not produce a valid measurement. The standalone host filled the 50 terminals, then closed the local peer socket on the first echo input (BrokenPipeError at matrix.py:370); no row was written. See attached raw stderr log. This failed attempt is excluded.
kayg commented 2026-10-14 11:14:15 +00:00
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Steps pushed: 6ad56630 repairs the public NULL-allocator native constructor and binds the mouse probe to its exact Cargo archive; exact feature mouse integration passes. d2f1e2f8 removes default-build feature-only constructor warnings; default all-target Clippy passes. Both slices passed fmt. Head d2f1e2f8.

public-mouse-owned-green.log
default-clippy3.log

Current-head static prototype rebuild is running in build-owned; the cgroup regression and native heap warm-up accounting will run on the perf VM after it completes. No default switch or deploy.

Steps pushed: 6ad56630 repairs the public NULL-allocator native constructor and binds the mouse probe to its exact Cargo archive; exact feature mouse integration passes. d2f1e2f8 removes default-build feature-only constructor warnings; default all-target Clippy passes. Both slices passed fmt. Head d2f1e2f8. [public-mouse-owned-green.log](https://git.kayg.org/attachments/8adcdd62-904e-49bf-b49f-d14f0b563cfd) [default-clippy3.log](https://git.kayg.org/attachments/2f78b12a-ff3d-4c30-ab95-8a7f6c73e27a) Current-head static prototype rebuild is running in build-owned; the cgroup regression and native heap warm-up accounting will run on the perf VM after it completes. No default switch or deploy.
kayg commented 2026-10-14 11:21:33 +00:00
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Finding resolution: the host client harness had opened a second same-writer retention peer after attaching the viewer; that correctly replaced the viewer connection before echo. Retention now uses the already validated pre-viewer census, and no further peer is opened. Reproduction on the perf VM: standalone host, 1 terminal, 100×72 numbered filler, 2 echoes passed (p50/p99 0.622/0.622 ms). Diagnostic raw JSON attached; excluded from chart results.

Finding resolution: the host client harness had opened a second same-writer retention peer after attaching the viewer; that correctly replaced the viewer connection before echo. Retention now uses the already validated pre-viewer census, and no further peer is opened. Reproduction on the perf VM: standalone host, 1 terminal, 100×72 numbered filler, 2 echoes passed (p50/p99 0.622/0.622 ms). Diagnostic raw JSON attached; excluded from chart results.
kayg commented 2026-10-14 11:23:55 +00:00
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Completed harness step 13a76257: quiet driver never receives bulk frames; frozen per-producer Hello offsets measure full flood throughput. Fresh indexed baseline af6da9b4 SHA on perf VM (4 vCPU, load 4.65/1.69/1.43): 1,000 sessions, 100 detached flooders, 1,000 sequential quiet samples; idle p99 2.066985 ms, flood p99 40.213512 ms, extra 38.146527 ms, max 77.052217 ms. Aggregate producer throughput 36,974,176 B/s. This is a failing D270 fairness benchmark, not a passing budget. Driver syntax plus 11 protocol/receipt fixtures pass.

baseline-fairness2.log

Docs step 0713c908 records D270 status and exact native/string/input/peer ownership limits, without claiming host RSS admission. Fmt passes. Head 0713c908; parser fuzz build completed, VM run pending.

Completed harness step 13a76257: quiet driver never receives bulk frames; frozen per-producer Hello offsets measure full flood throughput. Fresh indexed baseline af6da9b4 SHA on perf VM (4 vCPU, load 4.65/1.69/1.43): 1,000 sessions, 100 detached flooders, 1,000 sequential quiet samples; idle p99 2.066985 ms, flood p99 40.213512 ms, extra 38.146527 ms, max 77.052217 ms. Aggregate producer throughput 36,974,176 B/s. This is a failing D270 fairness benchmark, not a passing budget. Driver syntax plus 11 protocol/receipt fixtures pass. [baseline-fairness2.log](https://git.kayg.org/attachments/f86e3727-fca5-41ff-9581-9b5785a4a77a) Docs step 0713c908 records D270 status and exact native/string/input/peer ownership limits, without claiming host RSS admission. Fmt passes. Head 0713c908; parser fuzz build completed, VM run pending.
kayg commented 2026-10-14 11:31:06 +00:00
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Finding: the production 50-terminal chart client row failed during terminal 1, so no data is counted. The shell completion ack arrived, but the authenticated viewer had observed 660,498/740,018 bytes and 8,925/10,000 numbered lines when the 300 s output-drain timeout fired; numbered order remained valid. The raw traceback and process census are attached. I am fixing the benchmark client's reconnect handling before retrying.

Finding: the production 50-terminal chart client row failed during terminal 1, so no data is counted. The shell completion ack arrived, but the authenticated viewer had observed 660,498/740,018 bytes and 8,925/10,000 numbered lines when the 300 s output-drain timeout fired; numbered order remained valid. The raw traceback and process census are attached. I am fixing the benchmark client's reconnect handling before retrying.
kayg commented 2026-10-14 11:43:02 +00:00
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Finding: the production viewer fixture reused input offset 278 from a filler WebSocket on a new WebSocket connection. The server writer cursor is keyed by websocket connection_id and client stream; a new viewer writer starts at input_acked=0, and websocket.rs rejects last_in_seq > input_acked by closing the WebSocket. The 1-terminal 100×72 diagnostic therefore had no accepted row (close frame, 2 echo samples not reached). Raw stderr attached. The harness will use input sequence 0 for each new viewer and distinct odd stream IDs for each setup terminal.

Finding: the production viewer fixture reused input offset 278 from a filler WebSocket on a new WebSocket connection. The server writer cursor is keyed by websocket connection_id and client stream; a new viewer writer starts at input_acked=0, and websocket.rs rejects last_in_seq > input_acked by closing the WebSocket. The 1-terminal 100×72 diagnostic therefore had no accepted row (close frame, 2 echo samples not reached). Raw stderr attached. The harness will use input sequence 0 for each new viewer and distinct odd stream IDs for each setup terminal.
kayg commented 2026-10-14 11:48:09 +00:00
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Harness correction verified on perf VM: production server, 1 terminal, 100×72 filler, 2 echo samples passed after using a fresh writer at input offset 0. Echo p50/p99=20.004/20.004 ms; 100 lines retained. This is a protocol diagnostic only and is excluded from chart totals. Raw JSON attached. The chart retry now uses distinct stream IDs in batches of 32 (the server's attachment ceiling).

Harness correction verified on perf VM: production server, 1 terminal, 100×72 filler, 2 echo samples passed after using a fresh writer at input offset 0. Echo p50/p99=20.004/20.004 ms; 100 lines retained. This is a protocol diagnostic only and is excluded from chart totals. Raw JSON attached. The chart retry now uses distinct stream IDs in batches of 32 (the server's attachment ceiling).
kayg commented 2026-10-14 11:50:33 +00:00
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Finding: corrected 50-terminal production client retry still failed on terminal 1, excluded from chart data. The completion ack was present; the WebSocket closed after one terminal-stream retry with output_seq=263,474, input_ack=278, 3,560/10,000 numbered lines, and valid number order. Raw stderr/process census attached. I am recording the control-stream close reason before retrying.

Finding: corrected 50-terminal production client retry still failed on terminal 1, excluded from chart data. The completion ack was present; the WebSocket closed after one terminal-stream retry with output_seq=263,474, input_ack=278, 3,560/10,000 numbered lines, and valid number order. Raw stderr/process census attached. I am recording the control-stream close reason before retrying.
kayg commented 2026-10-14 12:00:38 +00:00
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50-terminal authenticated client harness diagnostic now passes with 100 numbered 72-column lines per terminal: 5,000/5,000 ordered lines, 370,900 bytes drained, 0 stream retries, 50 short-lived fill sockets, and 0 transport resets. Process memory at setup was 113,243 KiB PSS / 99,004 KiB private dirty; the separate attached-viewer delta was +24 KiB each. Two-sample echo was 40.394 ms p50/p99 and is diagnostic only, not a chart result. Harness scripts remain in scratch (server_matrix.py SHA-256 9ada60534e0a4aa4e79181a369256cb6e1420c8bb5122cb73aedde7813dcfd37); no product code changed. Raw JSON: diag_prod_client_50_100_freshviewer.json.

50-terminal authenticated client harness diagnostic now passes with 100 numbered 72-column lines per terminal: 5,000/5,000 ordered lines, 370,900 bytes drained, 0 stream retries, 50 short-lived fill sockets, and 0 transport resets. Process memory at setup was 113,243 KiB PSS / 99,004 KiB private dirty; the separate attached-viewer delta was +24 KiB each. Two-sample echo was 40.394 ms p50/p99 and is diagnostic only, not a chart result. Harness scripts remain in scratch (server_matrix.py SHA-256 9ada60534e0a4aa4e79181a369256cb6e1420c8bb5122cb73aedde7813dcfd37); no product code changed. Raw JSON: [diag_prod_client_50_100_freshviewer.json](https://git.kayg.org/attachments/dcf05ea9-a7c9-4688-ab28-7de8952a255b).
kayg commented 2026-10-14 12:04:16 +00:00
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Finding: real-engine native allocation probe (production musl ReleaseFast archive, current Rust ownership; perf VM) passed 1/10/100/1,000 cohorts after 16 geometry cycles and 16,384 short lines/terminal. Each terminal retains 4,063,570 B: 8,530 ordinary + 4,055,040 pooled mappings, 11 live blocks; zero refusals. At 1,000, native reservations are 4,063,570,000 B and final PSS 1,522,284 KiB. Active ownership counters settle, but pooling dominates retained cost; continuing to trace delayed residency during sparse churn. This short dense probe does not certify the two-hour mixed soak.

An initial standalone probe linked the default native archive and reported page_bytes=0; that row is invalid and excluded. The probe now requires page_bytes>0. ReleaseSafe numbers are diagnostic only and are separate from the production ReleaseFast receipt (its safety memset changes residency).

The unignored Rust cgroup regression reproduces baseline failure (exit 101): the indexed host disappears after 32-MiB OSC and /proc sampling reports the missing PID. Current-head full static image is in final CLI optimisation; wrapper green repeat pending.

Protected-parser fuzz: strengthened marker check initially rejected empty input because the approximate painter emits controls between printed cells. The harness now observes VTE print actions, not contiguous wire bytes; rerun completed 19,148 cases without a crash, seed 270205, VM load 0.11/0.32/0.70 (exact run load is in receipt). This instruments Rust carry/limiter ownership, not native Zig coverage.

heap-scale-fast-before.log
memory-rust-baseline-red.log
p0-fuzz-run3.log

Finding: real-engine native allocation probe (production musl ReleaseFast archive, current Rust ownership; perf VM) passed 1/10/100/1,000 cohorts after 16 geometry cycles and 16,384 short lines/terminal. Each terminal retains 4,063,570 B: 8,530 ordinary + 4,055,040 pooled mappings, 11 live blocks; zero refusals. At 1,000, native reservations are 4,063,570,000 B and final PSS 1,522,284 KiB. Active ownership counters settle, but pooling dominates retained cost; continuing to trace delayed residency during sparse churn. This short dense probe does not certify the two-hour mixed soak. An initial standalone probe linked the default native archive and reported page_bytes=0; that row is invalid and excluded. The probe now requires page_bytes>0. ReleaseSafe numbers are diagnostic only and are separate from the production ReleaseFast receipt (its safety memset changes residency). The unignored Rust cgroup regression reproduces baseline failure (exit 101): the indexed host disappears after 32-MiB OSC and /proc sampling reports the missing PID. Current-head full static image is in final CLI optimisation; wrapper green repeat pending. Protected-parser fuzz: strengthened marker check initially rejected empty input because the approximate painter emits controls between printed cells. The harness now observes VTE print actions, not contiguous wire bytes; rerun completed 19,148 cases without a crash, seed 270205, VM load 0.11/0.32/0.70 (exact run load is in receipt). This instruments Rust carry/limiter ownership, not native Zig coverage. [heap-scale-fast-before.log](https://git.kayg.org/attachments/291fa670-3ff0-4d8c-9ca4-bf182bf049bb) [memory-rust-baseline-red.log](https://git.kayg.org/attachments/66fd0cad-4069-4fc2-8ea1-0e09cb29d717) [p0-fuzz-run3.log](https://git.kayg.org/attachments/6991776f-d56f-46c3-aa41-bb1f7bbe5934)
kayg commented 2026-10-14 12:04:45 +00:00
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Correction to the last finding: the strengthened fuzz run load was 1.29/1.33/1.22, as the attached p0-fuzz-run3.log first line records. The previous comment's load value was incorrect. Seed 270205 and 19,148 completed cases are unchanged.

Correction to the last finding: the strengthened fuzz run load was 1.29/1.33/1.22, as the attached p0-fuzz-run3.log first line records. The previous comment's load value was incorrect. Seed 270205 and 19,148 completed cases are unchanged.
kayg commented 2026-10-14 12:13:14 +00:00
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The first live-attached production fill attempt is invalid: it completed the shell-side ack but the WebSocket ended after 2,854/10,000 ordered lines (211,216 bytes) and one stream retry. The server’s bounded output-reader path retires a stream when that reader falls behind. I aligned production fill with the detached host/tmux rows: wait for each shell completion ack, require each associated shim to read at least the expected PTY byte count, and replay/validate all numbered lines on terminal 0. Diagnostics passed: 1×10,000 lines yielded 10,000 ordered lines and 740,305 replay bytes; 1×100 yielded 100/100 lines and 7,703 replay bytes. The 1×10,000 diagnostic process memory was 32,271 KiB PSS / 18,008 KiB private dirty; it is not a chart row. No product code changed.

Evidence: failed live-stream log, 1×10,000 replay JSON, 1×100 sampled replay JSON.

The first live-attached production fill attempt is invalid: it completed the shell-side ack but the WebSocket ended after 2,854/10,000 ordered lines (211,216 bytes) and one stream retry. The server’s bounded output-reader path retires a stream when that reader falls behind. I aligned production fill with the detached host/tmux rows: wait for each shell completion ack, require each associated shim to read at least the expected PTY byte count, and replay/validate all numbered lines on terminal 0. Diagnostics passed: 1×10,000 lines yielded 10,000 ordered lines and 740,305 replay bytes; 1×100 yielded 100/100 lines and 7,703 replay bytes. The 1×10,000 diagnostic process memory was 32,271 KiB PSS / 18,008 KiB private dirty; it is not a chart row. No product code changed. Evidence: [failed live-stream log](https://git.kayg.org/attachments/b59977b9-7a17-492c-bdd8-52d40e71199a), [1×10,000 replay JSON](https://git.kayg.org/attachments/8b685420-5291-4e6e-aa34-5c374ea64901), [1×100 sampled replay JSON](https://git.kayg.org/attachments/51f36e4b-b244-4cfe-b83f-1e7cc0d3c65a).
kayg commented 2026-10-14 12:19:19 +00:00
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Chart milestone complete: the three startup, three 10,000-line, and three 50-terminal viewer JSON rows are attached below. Linux comparison uses tmux 3.8 tag 7f2a35a; prototypes are process-per-user 12f657f/indexed reactor 9756dd77 and origin/dev 97366a3. The Linux tmux measurement is the version bridge to the published macOS 3.5a chart.

  • Startup with one empty 80×24 terminal, PSS/private dirty KiB: tmux 2,451/1,140; process-per-user 5,076/1,012 (2.07× tmux PSS); origin/dev 23,583/9,512 (9.62×).
  • Added 10,000-line history, measured as filled one-session PSS minus matching one-session empty PSS: tmux 5,094/5,068; process-per-user 9,280/8,640 (1.82× tmux PSS); origin/dev 8,092/7,900 (1.59×). The Linux tmux increment is 4.97 MiB, near the published 4.89 MiB; process-per-user and origin/dev are 22.8× and 19.9× the published 407 KiB reference. The per-empty-session increment comes from the 1→10 scale rows and is still pending.
  • 50 filled terminals, total / per-terminal PSS/private dirty KiB: tmux 227,925/226,616 (4,558.5/4,532.3 per terminal); process-per-user 102,528/97,824 (2,050.6/1,956.5); origin/dev 506,759/492,520 (10,135.2/9,850.4).
  • One viewer echo, p50/p99 ms: tmux 0.794/3.241; process-per-user 0.425/1.729; origin/dev 0.849/1.684 (1,000 samples each). The origin/dev WebSocket viewer added 160 KiB PSS/private dirty to server + embedded agent + shims. tmux added 186/664 KiB to its server plus a 1,224/552 KiB tmux client process. The process-per-user row added 0/0 KiB to its host process via a local UNIX protocol peer; it has no browser/WebSocket front end, so this client-memory number is not a browser-equivalent comparison.

The process-per-user prototype wins the 50-terminal total memory row. tmux wins added memory for the first filled terminal and startup versus origin/dev. The main filled-history loss is terminal scrollback/VT state per session; origin/dev also pays for a shim process per session. Exact raw rows:

Next: finish the scale matrix and derive the per-empty-session increment from scale N=1 and N=10, then post the consolidated table.

Chart milestone complete: the three startup, three 10,000-line, and three 50-terminal viewer JSON rows are attached below. Linux comparison uses tmux 3.8 tag 7f2a35a; prototypes are process-per-user 12f657f/indexed reactor 9756dd77 and origin/dev 97366a3. The Linux tmux measurement is the version bridge to the published macOS 3.5a chart. - Startup with one empty 80×24 terminal, PSS/private dirty KiB: tmux 2,451/1,140; process-per-user 5,076/1,012 (2.07× tmux PSS); origin/dev 23,583/9,512 (9.62×). - Added 10,000-line history, measured as filled one-session PSS minus matching one-session empty PSS: tmux 5,094/5,068; process-per-user 9,280/8,640 (1.82× tmux PSS); origin/dev 8,092/7,900 (1.59×). The Linux tmux increment is 4.97 MiB, near the published 4.89 MiB; process-per-user and origin/dev are 22.8× and 19.9× the published 407 KiB reference. The per-empty-session increment comes from the 1→10 scale rows and is still pending. - 50 filled terminals, total / per-terminal PSS/private dirty KiB: tmux 227,925/226,616 (4,558.5/4,532.3 per terminal); process-per-user 102,528/97,824 (2,050.6/1,956.5); origin/dev 506,759/492,520 (10,135.2/9,850.4). - One viewer echo, p50/p99 ms: tmux 0.794/3.241; process-per-user 0.425/1.729; origin/dev 0.849/1.684 (1,000 samples each). The origin/dev WebSocket viewer added 160 KiB PSS/private dirty to server + embedded agent + shims. tmux added 186/664 KiB to its server plus a 1,224/552 KiB tmux client process. The process-per-user row added 0/0 KiB to its host process via a local UNIX protocol peer; it has no browser/WebSocket front end, so this client-memory number is not a browser-equivalent comparison. The process-per-user prototype wins the 50-terminal total memory row. tmux wins added memory for the first filled terminal and startup versus origin/dev. The main filled-history loss is terminal scrollback/VT state per session; origin/dev also pays for a shim process per session. Exact raw rows: - Startup: [tmux](https://git.kayg.org/attachments/7179adb7-4fa0-44b5-9de8-a509e805c6dd), [process-per-user](https://git.kayg.org/attachments/6fe48ab3-1080-4831-ab90-bb02f269b444), [origin/dev](https://git.kayg.org/attachments/dfeb40eb-a398-443f-809f-c18011a72c29) - Filled: [tmux](https://git.kayg.org/attachments/29247053-1a63-4711-b0f4-33dea9310a50), [process-per-user](https://git.kayg.org/attachments/f3342125-c5c6-4206-a9cb-19ee678e9c2d), [origin/dev](https://git.kayg.org/attachments/266ae65d-0029-4b89-b086-dc7b8433a59d) - 50-terminal client: [tmux](https://git.kayg.org/attachments/91ba5c69-07aa-4f90-9ede-910de8b745aa), [process-per-user](https://git.kayg.org/attachments/1e498426-8d7a-49fc-b084-a3df36432654), [origin/dev](https://git.kayg.org/attachments/29aadea3-47a4-49d5-885d-fdb4f86beaa2) Next: finish the scale matrix and derive the per-empty-session increment from scale N=1 and N=10, then post the consolidated table.
kayg commented 2026-10-14 12:22:15 +00:00
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Continuation r3 start: process-per-user at e339a6a4c (full SHA recorded by git below), base origin/dev b182529f common ancestor. Read #205 history (161 comments); no parent recorded. Continue D270 in prescribed order: validate existing bounded-native/string/input/peer ownership against cgroup regression, then retained-residency ownership and fairness before compact storage/viewer work. Perf VM 10.69.69.208 access succeeds; no default switch or deploy. Existing untracked scripts/pycache/ left untouched.

Continuation r3 start: process-per-user at e339a6a4c (full SHA recorded by git below), base origin/dev b182529f common ancestor. Read #205 history (161 comments); no parent recorded. Continue D270 in prescribed order: validate existing bounded-native/string/input/peer ownership against cgroup regression, then retained-residency ownership and fairness before compact storage/viewer work. Perf VM 10.69.69.208 access succeeds; no default switch or deploy. Existing untracked scripts/__pycache__/ left untouched.
kayg commented 2026-10-14 12:26:12 +00:00
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D270 item 1 validated on exact e339a6a4f8 static feature image (SHA256 75a5a939eabf2f36336c762b6f96ca567c0c5f7d155e17b5887f2ed18b6f06b4): existing 32-MiB OSC cgroup regression passes, 20/20 responsive sessions. Working set 51,240,960 B, cap 68,018,176 B, peak 52,920,320 B, memory.events max/oom/oom_kill all zero. Perf VM 4 vCPU, kernel 6.12.111, load 1.43/1.83/1.55, shared lock and private scope. This closes the previous run’s pending full-image repeat; no new code needed for that reproduction. Current native owner, streaming cap and input/peer budgets remain in place. Proceeding to retained-residency owner diagnosis; no 2-hour or fairness pass claim.

D270 item 1 validated on exact e339a6a4f8afd166ec41bfaaecd5bbdf632b144f static feature image (SHA256 75a5a939eabf2f36336c762b6f96ca567c0c5f7d155e17b5887f2ed18b6f06b4): existing 32-MiB OSC cgroup regression passes, 20/20 responsive sessions. Working set 51,240,960 B, cap 68,018,176 B, peak 52,920,320 B, memory.events max/oom/oom_kill all zero. Perf VM 4 vCPU, kernel 6.12.111, load 1.43/1.83/1.55, shared lock and private scope. This closes the previous run’s pending full-image repeat; no new code needed for that reproduction. Current native owner, streaming cap and input/peer budgets remain in place. Proceeding to retained-residency owner diagnosis; no 2-hour or fairness pass claim.
kayg commented 2026-10-14 12:27:47 +00:00
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D270 item 1 validated on exact e339a6a4f8 static feature image (SHA256 75a5a939eabf2f36336c762b6f96ca567c0c5f7d155e17b5887f2ed18b6f06b4): existing 32-MiB OSC cgroup regression passes, 20/20 responsive sessions. Working set 51,240,960 B, cap 68,018,176 B, peak 52,920,320 B, memory.events max/oom/oom_kill all zero. Perf VM 4 vCPU, kernel 6.12.111, load 1.43/1.83/1.55, shared lock and private scope. This closes the previous run’s pending full-image repeat; no new code needed for that reproduction. Current native owner, streaming cap and input/peer budgets remain in place. Proceeding to retained-residency owner diagnosis; no 2-hour or fairness pass claim.
memory-head.jsonl.txt

D270 item 1 validated on exact e339a6a4f8afd166ec41bfaaecd5bbdf632b144f static feature image (SHA256 75a5a939eabf2f36336c762b6f96ca567c0c5f7d155e17b5887f2ed18b6f06b4): existing 32-MiB OSC cgroup regression passes, 20/20 responsive sessions. Working set 51,240,960 B, cap 68,018,176 B, peak 52,920,320 B, memory.events max/oom/oom_kill all zero. Perf VM 4 vCPU, kernel 6.12.111, load 1.43/1.83/1.55, shared lock and private scope. This closes the previous run’s pending full-image repeat; no new code needed for that reproduction. Current native owner, streaming cap and input/peer budgets remain in place. Proceeding to retained-residency owner diagnosis; no 2-hour or fairness pass claim. [memory-head.jsonl.txt](https://git.kayg.org/attachments/a5bdc568-d467-44d4-a6d9-ee6b14028cc2)
kayg commented 2026-10-14 12:28:38 +00:00
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Scale counter finding: the first origin/dev idle and filled 1-terminal rows produced negative CPU/schedstat deltas (-33,857,267 ns and -36,314,764 ns CPU; -5 and -2 scheduler slices). The old sampler summed live /proc task counters, so thread turnover between samples can make the total go down. These two rows are invalid and excluded. The scratch sampler now uses process-group CPU from /proc/PID/stat and scheduler/context-switch deltas over task IDs present in both samples; rows without nonnegative qualified counters will be rerun. No product code changed.

Evidence: idle row, filled row.

Scale counter finding: the first origin/dev idle and filled 1-terminal rows produced negative CPU/schedstat deltas (-33,857,267 ns and -36,314,764 ns CPU; -5 and -2 scheduler slices). The old sampler summed live /proc task counters, so thread turnover between samples can make the total go down. These two rows are invalid and excluded. The scratch sampler now uses process-group CPU from /proc/PID/stat and scheduler/context-switch deltas over task IDs present in both samples; rows without nonnegative qualified counters will be rerun. No product code changed. Evidence: [idle row](https://git.kayg.org/attachments/1d11a514-eb28-4e8a-9a04-20b8cd65ecd8), [filled row](https://git.kayg.org/attachments/be578e60-6bcf-4480-bc64-4f9a81e3d23a).
kayg commented 2026-10-14 12:31:00 +00:00
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Step 317be239 pushed: sparse-history owner regression, perf-only, rejects multi-megabyte page quanta against a 64-KiB share. Fmt and feature all-target Clippy pass; existing feature unit suite 100 passed, 0 failed, 14 ignored. New probe fails on production ReleaseFast native archive: 1,634,642 B retained at 8,192 light lines. Native PageList::minMaxSize requires two standard pages; standard capacity is 215×215 cells and four items are preheated per screen. The live owner list identifies page mappings as the dominant retained class. Testing smaller pages/preheat in the feature-only native build; default engine remains unchanged. This probe diagnoses the reservoir; only a full repeated soak can establish removal of the prior +323 MiB growth.
sparse-red.log

Step 317be239 pushed: sparse-history owner regression, perf-only, rejects multi-megabyte page quanta against a 64-KiB share. Fmt and feature all-target Clippy pass; existing feature unit suite 100 passed, 0 failed, 14 ignored. New probe fails on production ReleaseFast native archive: 1,634,642 B retained at 8,192 light lines. Native PageList::minMaxSize requires two standard pages; standard capacity is 215×215 cells and four items are preheated per screen. The live owner list identifies page mappings as the dominant retained class. Testing smaller pages/preheat in the feature-only native build; default engine remains unchanged. This probe diagnoses the reservoir; only a full repeated soak can establish removal of the prior +323 MiB growth. [sparse-red.log](https://git.kayg.org/attachments/80cef672-a19d-4faa-9abd-75f4da11acb9)
kayg commented 2026-10-14 12:31:51 +00:00
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Flood N=1 finding: the initial harness rounded 10% up to one terminal, making the sole terminal flood and leaving no non-flood terminal for the required attached echo sample. The N=1 flood row failed with an echo marker timeout and is invalid. I changed the integer count to floor(N/10): N=1 therefore has 0 flooding terminals and an attached echo control; N=10/100/1000 still flood 1/10/100 terminals exactly. The row records the flood terminal count explicitly. Evidence: failed tmux N=1 log.

Flood N=1 finding: the initial harness rounded 10% up to one terminal, making the sole terminal flood and leaving no non-flood terminal for the required attached echo sample. The N=1 flood row failed with an echo marker timeout and is invalid. I changed the integer count to floor(N/10): N=1 therefore has 0 flooding terminals and an attached echo control; N=10/100/1000 still flood 1/10/100 terminals exactly. The row records the flood terminal count explicitly. Evidence: [failed tmux N=1 log](https://git.kayg.org/attachments/1676ae74-48f9-404f-979f-7f187f9aac53).
kayg commented 2026-10-14 12:42:56 +00:00
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Scale N=1 is complete with qualified nonnegative counters. Raw JSON rows are attached. Idle PSS/private dirty KiB: tmux 2,565/1,140; process-per-user 5,084/1,020; origin/dev 21,351/7,280. The scale filled case is 2,024 numbered 80-column lines: 3,640/2,248; 7,292/2,588; 25,243/10,980 respectively. All were sequence-validated for the sampled terminal and the production shim consumed at least the expected PTY bytes.

CPU seconds / schedstat run-slices per second / echo p50-p99 ms (100 samples):

Workload tmux process-per-user origin/dev
Light, one line/s 0.05 / 6.23 / 0.411-1.631 0.02 / 4.33 / 0.385-4.546 0.18 / 123.58 / 1.408-2.101
Flood control, 0/1 terminals flooded 0.02 / 7.17 / 0.370-0.623 0.02 / 6.13 / 0.373-2.190 0.23 / 240.06 / 1.709-14.784

At N=1 the 10% integer workload has zero flooding terminals; this row is an idle-output echo control. Perf is unavailable and perf_event_paranoid=3, so schedstat slices/context switches are recorded as proxies, not wakeups. Each JSON records the machine, load average, PTY counts and the prior 27.9 KiB/PTY reference estimate separately.

Raw data: idle tmux, idle process-per-user, idle origin/dev; filled tmux, filled process-per-user, filled origin/dev; light tmux, light process-per-user, light origin/dev; flood control tmux, flood control process-per-user, flood control origin/dev.

N=10/100/1,000 remain.

Scale N=1 is complete with qualified nonnegative counters. Raw JSON rows are attached. Idle PSS/private dirty KiB: tmux 2,565/1,140; process-per-user 5,084/1,020; origin/dev 21,351/7,280. The scale filled case is 2,024 numbered 80-column lines: 3,640/2,248; 7,292/2,588; 25,243/10,980 respectively. All were sequence-validated for the sampled terminal and the production shim consumed at least the expected PTY bytes. CPU seconds / schedstat run-slices per second / echo p50-p99 ms (100 samples): | Workload | tmux | process-per-user | origin/dev | |---|---:|---:|---:| | Light, one line/s | 0.05 / 6.23 / 0.411-1.631 | 0.02 / 4.33 / 0.385-4.546 | 0.18 / 123.58 / 1.408-2.101 | | Flood control, 0/1 terminals flooded | 0.02 / 7.17 / 0.370-0.623 | 0.02 / 6.13 / 0.373-2.190 | 0.23 / 240.06 / 1.709-14.784 | At N=1 the 10% integer workload has zero flooding terminals; this row is an idle-output echo control. Perf is unavailable and perf_event_paranoid=3, so schedstat slices/context switches are recorded as proxies, not wakeups. Each JSON records the machine, load average, PTY counts and the prior 27.9 KiB/PTY reference estimate separately. Raw data: [idle tmux](https://git.kayg.org/attachments/1b60cec8-b983-407d-8e62-f1af6bc3d796), [idle process-per-user](https://git.kayg.org/attachments/adf8cbad-c767-484f-b2d9-d9725b977512), [idle origin/dev](https://git.kayg.org/attachments/a55a7c48-7716-43c2-9146-937bfc8231b0); [filled tmux](https://git.kayg.org/attachments/bdd805ae-59ed-484b-a1b8-e83157b17395), [filled process-per-user](https://git.kayg.org/attachments/a1845558-9b5f-4188-bb65-7de8f8d33a3b), [filled origin/dev](https://git.kayg.org/attachments/b9e01312-70fb-41a1-bdbd-5d6dffb24619); [light tmux](https://git.kayg.org/attachments/36f6df8e-e9aa-4a57-bc6d-e6df1c31d047), [light process-per-user](https://git.kayg.org/attachments/c35433cd-1f7b-4070-abd9-a3a11558b4c0), [light origin/dev](https://git.kayg.org/attachments/cc308e92-6c1b-46b4-aa5d-806d788ba863); [flood control tmux](https://git.kayg.org/attachments/a77299c4-a840-411c-842c-f533b76d9821), [flood control process-per-user](https://git.kayg.org/attachments/c56b53e4-4a35-422f-9a70-9df90c087126), [flood control origin/dev](https://git.kayg.org/attachments/0f7c2950-ab2f-4d9c-9a24-bc89413e0cc1). N=10/100/1,000 remain.
kayg commented 2026-10-14 12:57:33 +00:00
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Scale N=10 complete; all 12 JSON rows are attached. Idle PSS/private dirty KiB: tmux 2,578/1,172; process-per-user 5,096/1,032; origin/dev 33,384/19,312. The 1→10 idle delta is 1.44/3.56 KiB per added tmux terminal, 1.33/1.33 KiB for process-per-user, and 1,337/1,337 KiB for origin/dev (PSS/private dirty). For 2,024 numbered 80-column lines, total PSS/private dirty is tmux 11,733/10,456; process-per-user 21,160/16,456; origin/dev 48,954/34,692. tmux is the clear filled-memory winner at this scale.

During light output (60s, one line/s/session), total CPU seconds / schedstat slices per second / echo p50-p99 ms are tmux 0.06 / 6.92 / 0.369-1.279; process-per-user 0.01 / 6.82 / 0.196-0.554; origin/dev 0.20 / 122.53 / 0.932-8.406. Process-per-user wins light CPU and latency; origin/dev loses both.

During flooding (one of ten terminals, 30s), CPU seconds / context switches per second / echo p50-p99 ms are tmux 29.90 / 8.83 / 1.099-1.948; process-per-user 29.31 / 533.06 / 0.279-0.633; origin/dev 22.75 / 10,300.64 / 1.129-2.192. Origin/dev uses the least CPU, while tmux has by far the fewest context switches and process-per-user has the lowest echo latency. The origin/dev row’s 10,300/s switch proxy is a clear loss.

Perf counters are unavailable; schedstat slices and context switches are proxies, not wakeups. Load, versions, PTY counts, and measurement method are in the attached JSONs.

Raw data: empty tmux, empty process-per-user, empty origin/dev; filled tmux, filled process-per-user, filled origin/dev; light tmux, light process-per-user, light origin/dev; flood tmux, flood process-per-user, flood origin/dev.

N=100 and N=1,000 remain.

Scale N=10 complete; all 12 JSON rows are attached. Idle PSS/private dirty KiB: tmux 2,578/1,172; process-per-user 5,096/1,032; origin/dev 33,384/19,312. The 1→10 idle delta is 1.44/3.56 KiB per added tmux terminal, 1.33/1.33 KiB for process-per-user, and 1,337/1,337 KiB for origin/dev (PSS/private dirty). For 2,024 numbered 80-column lines, total PSS/private dirty is tmux 11,733/10,456; process-per-user 21,160/16,456; origin/dev 48,954/34,692. tmux is the clear filled-memory winner at this scale. During light output (60s, one line/s/session), total CPU seconds / schedstat slices per second / echo p50-p99 ms are tmux 0.06 / 6.92 / 0.369-1.279; process-per-user 0.01 / 6.82 / 0.196-0.554; origin/dev 0.20 / 122.53 / 0.932-8.406. Process-per-user wins light CPU and latency; origin/dev loses both. During flooding (one of ten terminals, 30s), CPU seconds / context switches per second / echo p50-p99 ms are tmux 29.90 / 8.83 / 1.099-1.948; process-per-user 29.31 / 533.06 / 0.279-0.633; origin/dev 22.75 / 10,300.64 / 1.129-2.192. Origin/dev uses the least CPU, while tmux has by far the fewest context switches and process-per-user has the lowest echo latency. The origin/dev row’s 10,300/s switch proxy is a clear loss. Perf counters are unavailable; schedstat slices and context switches are proxies, not wakeups. Load, versions, PTY counts, and measurement method are in the attached JSONs. Raw data: [empty tmux](https://git.kayg.org/attachments/32925e03-640e-4393-b607-95a3200138f8), [empty process-per-user](https://git.kayg.org/attachments/8110e655-cdd0-4287-8e60-fdafc1713411), [empty origin/dev](https://git.kayg.org/attachments/4fc01ef6-383b-4b15-87e8-ccb5cc0b2032); [filled tmux](https://git.kayg.org/attachments/fabdbd55-2351-4df7-805e-a2153822a980), [filled process-per-user](https://git.kayg.org/attachments/cf16f62b-dea4-4bb4-9f97-e34bcc734b4a), [filled origin/dev](https://git.kayg.org/attachments/22725c6e-3b8d-4e5a-9496-c6c0594fc9a39); [light tmux](https://git.kayg.org/attachments/a62759dd-080d-4c0b-8d90-b0fba848dc61), [light process-per-user](https://git.kayg.org/attachments/55126ae6-4497-400d-a59b-641bd974cbe1), [light origin/dev](https://git.kayg.org/attachments/a20a313a-15f1-4719-8c37-0030874b87f7); [flood tmux](https://git.kayg.org/attachments/72cf6733-64b5-4e41-b2a9-a740171660c6), [flood process-per-user](https://git.kayg.org/attachments/18e0144a-95a3-46d6-a619-b3312cbbe78f), [flood origin/dev](https://git.kayg.org/attachments/c6d203da-6edf-483d-a727-a29ebdb2c56b). N=100 and N=1,000 remain.
kayg commented 2026-10-14 13:01:50 +00:00
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N=100 finding: the production light-output row exited before producing JSON when the echo peer sent on a closed WebSocket (BrokenPipeError(32, 'Broken pipe')). Trace: /home/kayg/.cache/codex-scratch/bench-vs-tmux/logs/scale_light_shim_n100.json.stderr.log. This is a harness transport-state handling failure, not a valid row; I am fixing reconnect handling and rerunning the row.

N=100 finding: the production light-output row exited before producing JSON when the echo peer sent on a closed WebSocket (`BrokenPipeError(32, 'Broken pipe')`). Trace: `/home/kayg/.cache/codex-scratch/bench-vs-tmux/logs/scale_light_shim_n100.json.stderr.log`. This is a harness transport-state handling failure, not a valid row; I am fixing reconnect handling and rerunning the row.
kayg commented 2026-10-14 13:05:38 +00:00
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N=100 retry finding: after the WebSocket reconnect change, light-row echo sampling completed, but cleanup failed before writing JSON: stop_light() closed its socket while waiting for a stop acknowledgement (output_seq=0, input_ack=0). The cleanup command had reset each terminal's tracked input offset to 0 after starting the light loop. I am correcting it to resume from the recorded per-terminal offset; this is harness cleanup, outside the measured interval.

N=100 retry finding: after the WebSocket reconnect change, light-row echo sampling completed, but cleanup failed before writing JSON: `stop_light()` closed its socket while waiting for a stop acknowledgement (`output_seq=0`, `input_ack=0`). The cleanup command had reset each terminal's tracked input offset to 0 after starting the light loop. I am correcting it to resume from the recorded per-terminal offset; this is harness cleanup, outside the measured interval.
kayg commented 2026-10-14 13:10:14 +00:00
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Steps pushed: 0cd00a05 reduces only feature-native page quanta/preheat; ea78cb16 bounds ring allocation to the logical share and precommits small active rings; 4f7133ba adds the audited real-PTY readable-byte hint; 92721f68 caps bulk work to one 4-KiB read per turn. Fmt, feature all-target Clippy and unit tests pass (102 passed, 0 failed, 16 explicit ignores; the hint case separately 1/1).

Perf VM, 4 vCPU, shared lock: sparse native ownership 1,634,642 -> 225,618 B at a 64-KiB history share; smaller-page PSS stays 4,360 KiB through 8,192 lines, with history 15–46 rows in sampled rounds (the old coarse floor accidentally retained hundreds more). Throughput gate 51.98 MB/s. The 900-quiet-session resize probe already stays flat on the old allocator-owned image (64,640 -> 64,828 KiB; reservations fixed at 1,936,267,200 B), ruling out quiet native resize churn alone as the +323-MiB owner. Full mixed soak is still required.

First combined full-image fairness candidate (SHA256 137087a15e660d9f8c1399598f0ee188ee407e14ed68e126539cd05993831e35): 1,000 sessions, 100 detached flooders, 2,000 sequential quiet echoes, idle p99 1.964630 ms, flood p99 3.093161 ms, extra 1.128531 ms, max 6.777918 ms, aggregate bulk 17,678,720 B/s; load 6.04/2.07/1.26. Meets D270 +2-ms quiet target; throughput is below the prior 36,974,176-B/s baseline. Testing removal of classification ioctls for disconnected producers before final fairness/soak. The combined image also repeats the cgroup isolation gate green. Neither two-hour stability nor final gate is claimed.
sparse-green.log
churn-red.log
page-throughput2.log
fairness-first.log
memory-fair.jsonl.txt

Steps pushed: 0cd00a05 reduces only feature-native page quanta/preheat; ea78cb16 bounds ring allocation to the logical share and precommits small active rings; 4f7133ba adds the audited real-PTY readable-byte hint; 92721f68 caps bulk work to one 4-KiB read per turn. Fmt, feature all-target Clippy and unit tests pass (102 passed, 0 failed, 16 explicit ignores; the hint case separately 1/1). Perf VM, 4 vCPU, shared lock: sparse native ownership 1,634,642 -> 225,618 B at a 64-KiB history share; smaller-page PSS stays 4,360 KiB through 8,192 lines, with history 15–46 rows in sampled rounds (the old coarse floor accidentally retained hundreds more). Throughput gate 51.98 MB/s. The 900-quiet-session resize probe already stays flat on the old allocator-owned image (64,640 -> 64,828 KiB; reservations fixed at 1,936,267,200 B), ruling out quiet native resize churn alone as the +323-MiB owner. Full mixed soak is still required. First combined full-image fairness candidate (SHA256 137087a15e660d9f8c1399598f0ee188ee407e14ed68e126539cd05993831e35): 1,000 sessions, 100 detached flooders, 2,000 sequential quiet echoes, idle p99 1.964630 ms, flood p99 3.093161 ms, extra 1.128531 ms, max 6.777918 ms, aggregate bulk 17,678,720 B/s; load 6.04/2.07/1.26. Meets D270 +2-ms quiet target; throughput is below the prior 36,974,176-B/s baseline. Testing removal of classification ioctls for disconnected producers before final fairness/soak. The combined image also repeats the cgroup isolation gate green. Neither two-hour stability nor final gate is claimed. [sparse-green.log](https://git.kayg.org/attachments/8d0f6e2e-b321-4b24-8b4b-4bf82ce889e8) [churn-red.log](https://git.kayg.org/attachments/1d15099b-fb59-404b-8001-12d12f2127a9) [page-throughput2.log](https://git.kayg.org/attachments/fa6175a7-a7b4-4def-8b82-ee8c5f3bf973) [fairness-first.log](https://git.kayg.org/attachments/19607855-f0ef-4ca9-bd5d-e5473295de5d) [memory-fair.jsonl.txt](https://git.kayg.org/attachments/16110590-110c-4528-8d2f-ef334e6eb640)
kayg commented 2026-10-14 13:18:52 +00:00
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N=100 production light row now passes after the harness reconnect and durable-input-cursor fixes. Over 60.0006 s: PSS 132,026→136,582 KiB; private dirty 117,856→122,380 KiB; CPU 0.250 s; 14,835 context switches / 60 s = 247.25/s; viewer echo p50 0.954 ms, p99 26.354 ms. Load average 0.69 before / 0.25 after. These are context-switch proxies, not wakeups. Raw JSON: scale_light_shim_n100.json.

N=100 production light row now passes after the harness reconnect and durable-input-cursor fixes. Over 60.0006 s: PSS 132,026→136,582 KiB; private dirty 117,856→122,380 KiB; CPU 0.250 s; 14,835 context switches / 60 s = 247.25/s; viewer echo p50 0.954 ms, p99 26.354 ms. Load average 0.69 before / 0.25 after. These are context-switch proxies, not wakeups. Raw JSON: [scale_light_shim_n100.json](https://git.kayg.org/attachments/8ac8ce22-6c9d-4c0f-88cc-dc6170e789bf).
kayg commented 2026-10-14 13:23:49 +00:00
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N=100 light-output row complete. Each terminal emitted one line/s for 60 s; echo used 100 samples on one attached client. During the interval, PSS/private-dirty were tmux 6,162/5,372 KiB (61.6/53.7 KiB per terminal), process-per-user 17,240/12,536 KiB (172.4/125.4 per terminal), and origin/dev 136,582/122,380 KiB (1,365.8/1,223.8 per terminal). CPU seconds were 0.20/0.10/0.25; context-switch proxies 12.65/22.33/247.25 per second; echo p50/p99 ms 0.388/2.993, 0.243/3.636, and 0.954/26.354, respectively. tmux has the least memory and switch activity; process-per-user has the lowest CPU and p50; tmux has the lowest p99. Load averages are in raw rows. No perf-event wakeup counter is available on this VM, so context switches are not labeled wakeups.

Raw: tmux, process-per-user, origin/dev.

N=100 light-output row complete. Each terminal emitted one line/s for 60 s; echo used 100 samples on one attached client. During the interval, PSS/private-dirty were tmux 6,162/5,372 KiB (61.6/53.7 KiB per terminal), process-per-user 17,240/12,536 KiB (172.4/125.4 per terminal), and origin/dev 136,582/122,380 KiB (1,365.8/1,223.8 per terminal). CPU seconds were 0.20/0.10/0.25; context-switch proxies 12.65/22.33/247.25 per second; echo p50/p99 ms 0.388/2.993, 0.243/3.636, and 0.954/26.354, respectively. tmux has the least memory and switch activity; process-per-user has the lowest CPU and p50; tmux has the lowest p99. Load averages are in raw rows. No perf-event wakeup counter is available on this VM, so context switches are not labeled wakeups. Raw: [tmux](https://git.kayg.org/attachments/7a2176b4-d739-4b68-a382-6d6ecedd96b6), [process-per-user](https://git.kayg.org/attachments/13ca21da-2ea0-4060-96aa-ecdd483deb47), [origin/dev](https://git.kayg.org/attachments/8ac8ce22-6c9d-4c0f-88cc-dc6170e789bf).
kayg commented 2026-10-14 13:26:01 +00:00
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N=100 worst-case row complete: 10/100 terminals ran yes for 30 s, with one attached viewer on a quiet terminal and 100 echo samples. During the interval:

Engine PSS / private dirty (KiB) CPU seconds Context switches/s Echo p50/p99 (ms)
tmux 3.8 38,715 / 37,948 29.99 13.47 8.826 / 14.745
process-per-user 24,464 / 19,760 29.93 84.17 1.134 / 1.832
origin/dev shims 426,160 / 411,912 91.57 101,492.56 0.959 / 26.238

Here tmux wins on memory and context-switch activity; process-per-user matches tmux CPU and has the best echo tail. Origin/dev uses about 3.05× their CPU, about 11–17× their PSS, and has roughly 1,200× their context-switch rate. Its echo p99 is also much worse than process-per-user. Wakeups are unavailable from the VM's perf configuration; counts above are context-switch proxies. Load averages are included in the raw rows.

Raw: tmux, process-per-user, origin/dev.

N=100 worst-case row complete: 10/100 terminals ran `yes` for 30 s, with one attached viewer on a quiet terminal and 100 echo samples. During the interval: | Engine | PSS / private dirty (KiB) | CPU seconds | Context switches/s | Echo p50/p99 (ms) | |---|---:|---:|---:|---:| | tmux 3.8 | 38,715 / 37,948 | 29.99 | 13.47 | 8.826 / 14.745 | | process-per-user | 24,464 / 19,760 | 29.93 | 84.17 | 1.134 / 1.832 | | origin/dev shims | 426,160 / 411,912 | 91.57 | 101,492.56 | 0.959 / 26.238 | Here tmux wins on memory and context-switch activity; process-per-user matches tmux CPU and has the best echo tail. Origin/dev uses about 3.05× their CPU, about 11–17× their PSS, and has roughly 1,200× their context-switch rate. Its echo p99 is also much worse than process-per-user. Wakeups are unavailable from the VM's perf configuration; counts above are context-switch proxies. Load averages are included in the raw rows. Raw: [tmux](https://git.kayg.org/attachments/74ab8678-d0d7-47b5-827f-2b8865305ce4), [process-per-user](https://git.kayg.org/attachments/f50f1e4e-6d3c-4b73-9ac9-57843d243cb5), [origin/dev](https://git.kayg.org/attachments/019b616f-d9da-4912-8204-6c8990b14bc7).
kayg commented 2026-10-14 13:26:47 +00:00
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D270 accounting seam proposed before implementation: an opt-in, feature-only hidden __shim --host-accounting opens a new mode-0600 receipt with create_new. SIGUSR2 requests numeric ownership snapshots from the same reactor thread: per-session native ordinary/page ownership and resident mapped pages, prefix/ring/input/writer/peer capacities. No terminal content, identity material or credentials are recorded. No frozen shim-frame change and no timer; disabled hosts do no profiling work. File failure disables profiling rather than stopping sessions. The two-hour run will use these receipts to attribute any residual growth; ordinary idle/latency comparisons remain uninstrumented.

D270 accounting seam proposed before implementation: an opt-in, feature-only hidden __shim --host-accounting <new-file> opens a new mode-0600 receipt with create_new. SIGUSR2 requests numeric ownership snapshots from the same reactor thread: per-session native ordinary/page ownership and resident mapped pages, prefix/ring/input/writer/peer capacities. No terminal content, identity material or credentials are recorded. No frozen shim-frame change and no timer; disabled hosts do no profiling work. File failure disables profiling rather than stopping sessions. The two-hour run will use these receipts to attribute any residual growth; ordinary idle/latency comparisons remain uninstrumented.
kayg commented 2026-10-14 13:36:08 +00:00
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N=1,000 process-per-user filled finding: the 2,024-line/80-column input was sent and acknowledged on all 1,000 PTYs, but the retained-history check found only 818 ordered lines (67,108 bytes) on the sampled terminal, versus the 2,024 lines/165,968 bytes required. run_batch correctly rejects this row as incomparable; raw JSON is attached with the failed retention values. The prototype's HOST_HISTORY_BYTES is fixed at 64 MiB and divided by session count (crates/infraternal-shim/src/user_host.rs:40,490-491), which gives 67,108 bytes/session at N=1,000 and matches the observed cap. No product code changed.

Raw invalid row: scale_filled_host_n1000.json.

N=1,000 process-per-user filled finding: the 2,024-line/80-column input was sent and acknowledged on all 1,000 PTYs, but the retained-history check found only 818 ordered lines (67,108 bytes) on the sampled terminal, versus the 2,024 lines/165,968 bytes required. `run_batch` correctly rejects this row as incomparable; raw JSON is attached with the failed retention values. The prototype's `HOST_HISTORY_BYTES` is fixed at 64 MiB and divided by session count (`crates/infraternal-shim/src/user_host.rs:40,490-491`), which gives 67,108 bytes/session at N=1,000 and matches the observed cap. No product code changed. Raw invalid row: [scale_filled_host_n1000.json](https://git.kayg.org/attachments/5d83ff90-2f96-456c-8569-3811df0eb77e).
kayg commented 2026-10-14 13:41:16 +00:00
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N=1,000 filled (2,024 numbered lines at 80 columns) results: tmux retained 2,024 lines and measured 923,592 KiB PSS / 922,308 KiB private dirty (923.6/922.3 KiB per terminal). Origin/dev acknowledged all 1,000 writes and the sampled terminal replayed 2,024 ordered lines / 165,994 bytes; its final process census was only server+agent (13,078/10,212 KiB PSS/private dirty, zero shims), despite an initial 1,002-process census and 1,001 PTYs still open. I report that observed process set and flag the disappearing shims; it is not a steady-state per-shim figure. The process-per-user row is incomparable: its 64 MiB shared history budget retains 818/2,024 lines at N=1,000. Raw: tmux, origin/dev, process-per-user capped row.

N=1,000 filled (2,024 numbered lines at 80 columns) results: tmux retained 2,024 lines and measured 923,592 KiB PSS / 922,308 KiB private dirty (923.6/922.3 KiB per terminal). Origin/dev acknowledged all 1,000 writes and the sampled terminal replayed 2,024 ordered lines / 165,994 bytes; its final process census was only server+agent (13,078/10,212 KiB PSS/private dirty, zero shims), despite an initial 1,002-process census and 1,001 PTYs still open. I report that observed process set and flag the disappearing shims; it is not a steady-state per-shim figure. The process-per-user row is incomparable: its 64 MiB shared history budget retains 818/2,024 lines at N=1,000. Raw: [tmux](https://git.kayg.org/attachments/62587859-de98-4006-b820-48a2d5321c89), [origin/dev](https://git.kayg.org/attachments/fe9cc9f8-0231-4d33-b61c-31a170d743c3), [process-per-user capped row](https://git.kayg.org/attachments/5d83ff90-2f96-456c-8569-3811df0eb77e).
kayg commented 2026-10-14 13:53:17 +00:00
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N=1,000 origin/dev light finding: the 60 s measured interval completed, but the row was not emitted because WebSocket cleanup failed at terminal 98 (output_seq=4946, input_ack=0), so this is not yet a valid row. Trace: scale_light_shim_n1000.json.stderr.log. I am changing only the harness cleanup to stop its recorded light-loop PIDs and then rerun the row.

N=1,000 origin/dev light finding: the 60 s measured interval completed, but the row was not emitted because WebSocket cleanup failed at terminal 98 (`output_seq=4946`, `input_ack=0`), so this is not yet a valid row. Trace: [scale_light_shim_n1000.json.stderr.log](https://git.kayg.org/attachments/1fb37223-6092-43db-9896-526acddc8992). I am changing only the harness cleanup to stop its recorded light-loop PIDs and then rerun the row.
kayg commented 2026-10-14 14:09:58 +00:00
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N=1,000 production light rerun has not entered its measurement: the remote wrapper is still inside flock -w 3600 /var/lock/perf-bench.lock. Process inspection shows the shared lock held by another 1,000-session soak; this row remains queued, with no measurement claimed. I am honoring the configured wait.

N=1,000 production light rerun has not entered its measurement: the remote wrapper is still inside `flock -w 3600 /var/lock/perf-bench.lock`. Process inspection shows the shared lock held by another 1,000-session soak; this row remains queued, with no measurement claimed. I am honoring the configured wait.
kayg commented 2026-10-14 14:11:01 +00:00
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N=100 detached idle and filled rows complete; all six JSON receipts attached. Per-terminal PSS/private dirty (KiB):

Workload tmux 3.8 process-per-user origin/dev shims
Empty idle 30.03 / 16.36 52.12 / 11.48 1,284.74 / 1,143.72
2,024 numbered lines retained 945.51 / 933.16 1,044.44 / 997.40 2,796.22 / 2,654.20

All three filled validators confirmed 2,024 retained lines. Idle and filled intervals recorded zero CPU and zero scheduler context switches for the multiplexer processes. Kernel PTYs are separate from process PSS; the raw files note the 27.9 KiB/PTY reference estimate, not a direct per-row attribution.

Raw empty: tmux, process-per-user, origin/dev. Raw filled: tmux, process-per-user, origin/dev.

N=100 detached idle and filled rows complete; all six JSON receipts attached. Per-terminal PSS/private dirty (KiB): | Workload | tmux 3.8 | process-per-user | origin/dev shims | |---|---:|---:|---:| | Empty idle | 30.03 / 16.36 | 52.12 / 11.48 | 1,284.74 / 1,143.72 | | 2,024 numbered lines retained | 945.51 / 933.16 | 1,044.44 / 997.40 | 2,796.22 / 2,654.20 | All three filled validators confirmed 2,024 retained lines. Idle and filled intervals recorded zero CPU and zero scheduler context switches for the multiplexer processes. Kernel PTYs are separate from process PSS; the raw files note the 27.9 KiB/PTY reference estimate, not a direct per-row attribution. Raw empty: [tmux](https://git.kayg.org/attachments/2df03ce4-0d32-4cc3-9937-a70e5865c263), [process-per-user](https://git.kayg.org/attachments/1ec37d20-afa0-4e75-bc74-b1ddb3ac0faa), [origin/dev](https://git.kayg.org/attachments/15498706-c25a-4ef1-a862-2455f7c59829). Raw filled: [tmux](https://git.kayg.org/attachments/7917670d-5785-46f2-84d7-c13a599abea1), [process-per-user](https://git.kayg.org/attachments/6263c278-86b2-46fa-b16a-decbcd63ff13), [origin/dev](https://git.kayg.org/attachments/57a7e454-6a9b-4245-abcf-c8a92282dbef).
kayg commented 2026-10-14 14:13:34 +00:00
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N=1,000 never-printed idle row complete. Per-terminal PSS/private dirty (KiB): tmux 9.432/8.084; process-per-user 6.260/2.196; origin/dev 1,101.810/1,088.172 (1,000 shims plus server and embedded agent). The process-per-user prototype is smallest here; origin/dev uses about 117× tmux PSS. All three recorded zero CPU and zero scheduler context switches during the 30 s interval. The origin/dev row held 1,001 kernel PTYs; PTY cost remains separate from process PSS.

Raw: tmux, process-per-user, origin/dev.

N=1,000 never-printed idle row complete. Per-terminal PSS/private dirty (KiB): tmux 9.432/8.084; process-per-user 6.260/2.196; origin/dev 1,101.810/1,088.172 (1,000 shims plus server and embedded agent). The process-per-user prototype is smallest here; origin/dev uses about 117× tmux PSS. All three recorded zero CPU and zero scheduler context switches during the 30 s interval. The origin/dev row held 1,001 kernel PTYs; PTY cost remains separate from process PSS. Raw: [tmux](https://git.kayg.org/attachments/115a88e2-ebd0-48e3-8a25-55736cd6a34a), [process-per-user](https://git.kayg.org/attachments/0388c66f-b7fc-47aa-a57f-1295c2352db2), [origin/dev](https://git.kayg.org/attachments/6e9ea36e-4397-4761-a994-f7d037f628c6).
kayg commented 2026-10-14 14:35:23 +00:00
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N=1,000 light rows for tmux and process-per-user are complete (60 s, one line/s/terminal, 100 echo samples). During interval: tmux PSS/private dirty 42,514/41,732 KiB, CPU 4.06 s, 41.52 context switches/s, echo p50/p99 2.756/54.406 ms; process-per-user 119,192/114,488 KiB, CPU 1.82 s, 51.38 context switches/s, echo 0.252/33.097 ms. Process-per-user used less CPU and had lower echo latency; tmux used less memory and had fewer context switches. Raw: tmux, process-per-user. Origin/dev is queued separately and has no valid row yet.

N=1,000 light rows for tmux and process-per-user are complete (60 s, one line/s/terminal, 100 echo samples). During interval: tmux PSS/private dirty 42,514/41,732 KiB, CPU 4.06 s, 41.52 context switches/s, echo p50/p99 2.756/54.406 ms; process-per-user 119,192/114,488 KiB, CPU 1.82 s, 51.38 context switches/s, echo 0.252/33.097 ms. Process-per-user used less CPU and had lower echo latency; tmux used less memory and had fewer context switches. Raw: [tmux](https://git.kayg.org/attachments/e016420b-cca7-4872-9b7b-525a30d7ba4f), [process-per-user](https://git.kayg.org/attachments/45a47bac-21b8-4b03-b8f9-769c95956189). Origin/dev is queued separately and has no valid row yet.
kayg commented 2026-10-14 14:54:21 +00:00
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N=1,000 origin/dev light row was not measured: its flock -w 3600 /var/lock/perf-bench.lock wait expired after approximately 60 minutes. The wrapper returned exit 1; remote stderr and row JSON were both 0 bytes, and the fixture never started. Receipt: scale_light_shim_n1000_lock-wait.json. I am requeueing it with the same lock policy; no result is inferred.

N=1,000 origin/dev light row was not measured: its `flock -w 3600 /var/lock/perf-bench.lock` wait expired after approximately 60 minutes. The wrapper returned exit 1; remote stderr and row JSON were both 0 bytes, and the fixture never started. Receipt: [scale_light_shim_n1000_lock-wait.json](https://git.kayg.org/attachments/241ce642-cb56-47b2-a723-02adca6e79f1). I am requeueing it with the same lock policy; no result is inferred.
kayg commented 2026-10-14 15:08:43 +00:00
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D270 r3 progress: 5f897f93 rotates one 4KiB bulk read per turn and prioritises attached PTYs with <=1024 queued bytes. Perf VM 1,000 sessions/100 detached bulk producers/5,000 echoes: idle p99 0.421830002ms, flood p99 0.763912991ms, extra 0.342082989ms, maximum 3.190377ms, aggregate bulk 42,390,635B/s. SHA256 5abad0220d398ef592e78407270ce8be495511e067d28eb987122a4c780b6494. VM load 2.69/2.17/1.51. Earlier baseline extra38.146527ms; loads differ.

b8b3c744 adds optional create-new0600 numeric per-session ownership receipts on SIGUSR2; no timer or file when disabled. d29d6673 adds test-only allocator accounting without changing layouts. f829b74f fixes a spurious one-byte allocation on empty ring append. ae1b1145 frees vacant viewer slots after last disconnect; real-PTY regression failed with4 slots and passes with0. 5060fa63 adds 1/10/100/1000 ownership ledger, queued for locked measurement. Feature unit tests107passed/0failed/17ignored, touched shim+CLI clippy passed.

The full r3long soak is ongoing. At4260s host PSS309412KiB, anonymous304636KiB, fds3005, threads1, load0.43/0.62/0.36. Thus the two-hour growth has NOT yet been fixed or attributed; preparing the accounting image to identify its owner. No adoption claim.

Receipt: fairness-final.log

D270 r3 progress: 5f897f93 rotates one 4KiB bulk read per turn and prioritises attached PTYs with <=1024 queued bytes. Perf VM 1,000 sessions/100 detached bulk producers/5,000 echoes: idle p99 0.421830002ms, flood p99 0.763912991ms, extra 0.342082989ms, maximum 3.190377ms, aggregate bulk 42,390,635B/s. SHA256 5abad0220d398ef592e78407270ce8be495511e067d28eb987122a4c780b6494. VM load 2.69/2.17/1.51. Earlier baseline extra38.146527ms; loads differ. b8b3c744 adds optional create-new0600 numeric per-session ownership receipts on SIGUSR2; no timer or file when disabled. d29d6673 adds test-only allocator accounting without changing layouts. f829b74f fixes a spurious one-byte allocation on empty ring append. ae1b1145 frees vacant viewer slots after last disconnect; real-PTY regression failed with4 slots and passes with0. 5060fa63 adds 1/10/100/1000 ownership ledger, queued for locked measurement. Feature unit tests107passed/0failed/17ignored, touched shim+CLI clippy passed. The full r3long soak is ongoing. At4260s host PSS309412KiB, anonymous304636KiB, fds3005, threads1, load0.43/0.62/0.36. Thus the two-hour growth has NOT yet been fixed or attributed; preparing the accounting image to identify its owner. No adoption claim. Receipt: [fairness-final.log](https://git.kayg.org/attachments/8323fe2e-3ee6-4a5f-95e7-2fbae09d2cd5)
kayg commented 2026-10-14 15:43:17 +00:00
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D270 completed code steps: a246b269 adds the50-filled-terminal live-viewer harness; fedea1fc retains attach summaries and owned cleanup identities. c1eb8778 adds exact cold-page UTF-8/rawattribute codec; 70af363a wires separate nondefault compact-history feature; d9151363 verifies every10,000 numbered72-column line, full replay, reconstructed search/selection spans, reflow and coldUnicode/styles/links. 5c17d1a5 documents actual scheduling, allocation classes and prototype limitations. Both build features remain off by default.

Native codec6 functional tests pass (rawbit/opaque metadata roundtrip, malformed dimensions/truncations,10k mutationguards, fuzz seed entry). Staticmusl compact-feature suite now111passed/0failed/18ignored, including encoded-allocation-class regression being finalized. Standalone production CLI integration2passed confirms mode0600 numeric receipts, refusing overwrite and original host stillusable. Shim compact all-target clippy passed; fresh shim+CLI all-target clippy and normal workspace iterate are ongoing.

Receipts: native codec, 111 functional tests, CLI private receipt, viewer9 tests.

Ongoing r3long: PSS66596KiB at10s,308032KiB at610s,309032KiB at4830s,307912KiB at5850s. Growth appears concentrated before600s warmup rather than continuing; final settled-window criterion awaits7200s. Descriptor count3005 andthreads1 remainflat. Echo of100 concurrent active probes still exceeds suite5ms budget (32.653601ms at6160s), despite the separate quiet-session/100bulk-producer target passing; report those as different workloads, never a green whole-suite claim. Ownership, viewer, compactresident and fuzz/properties runs queued behind the shared lock.

D270 completed code steps: a246b269 adds the50-filled-terminal live-viewer harness; fedea1fc retains attach summaries and owned cleanup identities. c1eb8778 adds exact cold-page UTF-8/rawattribute codec; 70af363a wires separate nondefault compact-history feature; d9151363 verifies every10,000 numbered72-column line, full replay, reconstructed search/selection spans, reflow and coldUnicode/styles/links. 5c17d1a5 documents actual scheduling, allocation classes and prototype limitations. Both build features remain off by default. Native codec6 functional tests pass (rawbit/opaque metadata roundtrip, malformed dimensions/truncations,10k mutationguards, fuzz seed entry). Staticmusl compact-feature suite now111passed/0failed/18ignored, including encoded-allocation-class regression being finalized. Standalone production CLI integration2passed confirms mode0600 numeric receipts, refusing overwrite and original host stillusable. Shim compact all-target clippy passed; fresh shim+CLI all-target clippy and normal workspace iterate are ongoing. Receipts: [native codec](https://git.kayg.org/attachments/768fd851-9107-438d-aa56-7dc5d94e8a99), [111 functional tests](https://git.kayg.org/attachments/f7bc3b66-d90f-423e-8707-e9680c2c3640), [CLI private receipt](https://git.kayg.org/attachments/26c3152f-9d4b-4301-acc0-54fd67ce466a), [viewer9 tests](https://git.kayg.org/attachments/93b6123d-0d54-47a6-8a2c-b4f9d492202a). Ongoing r3long: PSS66596KiB at10s,308032KiB at610s,309032KiB at4830s,307912KiB at5850s. Growth appears concentrated before600s warmup rather than continuing; final settled-window criterion awaits7200s. Descriptor count3005 andthreads1 remainflat. Echo of100 concurrent active probes still exceeds suite5ms budget (32.653601ms at6160s), despite the separate quiet-session/100bulk-producer target passing; report those as different workloads, never a green whole-suite claim. Ownership, viewer, compactresident and fuzz/properties runs queued behind the shared lock.
kayg commented 2026-10-14 15:55:38 +00:00
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The second N=1,000 origin/dev light wait also expired without starting a fixture. flock -w 3600 returned through the wrapper as exit 1 after approximately 60 minutes; stderr and row JSON were both 0 bytes. Receipt: scale_light_shim_n1000_lock-wait-2.json. No result is claimed. I am requeueing the same row again per the perf-VM lock rule.

The second N=1,000 origin/dev light wait also expired without starting a fixture. `flock -w 3600` returned through the wrapper as exit 1 after approximately 60 minutes; stderr and row JSON were both 0 bytes. Receipt: [scale_light_shim_n1000_lock-wait-2.json](https://git.kayg.org/attachments/f8457b38-bab4-4cea-b8bf-d6cb57e0aea1). No result is claimed. I am requeueing the same row again per the perf-VM lock rule.
kayg commented 2026-10-14 16:06:52 +00:00
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D270 two-hour rerun: r3long used full image SHA256 5abad0220d398ef592e78407270ce8be495511e067d28eb987122a4c780b6494, source 5f897f93. Perf VM: 4 vCPU, kernel 6.12.111, starting load 0.90/0.66/1.02; 1,000 sessions (900 idle, 90 light, 10 bursts), 600-second warmup, 7,200-second run, samples every 10 seconds.

Criterion Result Verdict
Settled PSS median growth +176 KiB (previously +323 MiB) PASS: 1,024 KiB
Settled PSS slope +106.592 KiB/hour PASS: 1,024 KiB/hour
FD/thread growth 0 / 0 PASS
Responsive survivors 1,000 / 1,000 PASS
Active-probe first/last median p99 8.003960 / 10.301145 ms FAIL: 1.25 ratio
Active-probe peak p99 112.157323 ms FAIL: 5 ms

Whole soak exits 1. The focused quiet-session/100-detached-producer result (+0.342083 ms p99 over idle) is a distinct workload and cannot replace the failed active-probe row. Full raw soak. Corpus and remaining suite phases are ongoing.

Viewer run used the noncompact accounting image f38cc668..., source label 5060fa63-noncompact-scaffold. Validated 50 × 10,000 fill lines and all 250 writer/terminal pairs. Host PSS for 1/2/3/5 viewers: 79,212/79,340/79,468/79,688 KiB; each extra native viewer (50 sockets) added 128/128/110 KiB. Idle CPU: zero ticks in each ten-second window. Echo p99: 0.847/1.885/2.444/1.786 ms. All 250 snapshots were approximate; this proves neither 10,000 retained VT lines nor browser cost. All 51 captured process identities were cleaned up. Viewer result, raw, cleanup.

Ownership diagnosis: after 2,400 accelerated quiet churn events and 120 active-output rounds at 1,000 sessions, host PSS was 74,980 KiB. Native ordinary/mapped/resident bytes: 9,200,000 / 290,816,000 / 51,335,168. Total charged ownership 311,267,900 bytes includes nonresident reservations. This diagnostic is separate from the timing soak. A bridge run will verify the two static images’ native pool sizes before attributing the PSS difference. Ownership receipt.

Completed 7539c14e encoded-class reconciliation and 8b72bb7f private-file CLI integration: 111 compact shim tests pass, 3 CLI integration tests pass, compact shim + CLI all-target clippy passes. Default features remain unchanged. Full final gate and remaining measurements are pending.

D270 two-hour rerun: r3long used full image SHA256 `5abad0220d398ef592e78407270ce8be495511e067d28eb987122a4c780b6494`, source `5f897f93`. Perf VM: 4 vCPU, kernel 6.12.111, starting load 0.90/0.66/1.02; 1,000 sessions (900 idle, 90 light, 10 bursts), 600-second warmup, 7,200-second run, samples every 10 seconds. | Criterion | Result | Verdict | |---|---:|---| | Settled PSS median growth | +176 KiB (previously +323 MiB) | PASS: 1,024 KiB | | Settled PSS slope | +106.592 KiB/hour | PASS: 1,024 KiB/hour | | FD/thread growth | 0 / 0 | PASS | | Responsive survivors | 1,000 / 1,000 | PASS | | Active-probe first/last median p99 | 8.003960 / 10.301145 ms | FAIL: 1.25 ratio | | Active-probe peak p99 | 112.157323 ms | FAIL: 5 ms | Whole soak exits 1. The focused quiet-session/100-detached-producer result (+0.342083 ms p99 over idle) is a distinct workload and cannot replace the failed active-probe row. [Full raw soak](https://git.kayg.org/attachments/947db6bb-dfaf-4d5d-838d-cb055833546c). Corpus and remaining suite phases are ongoing. Viewer run used the noncompact accounting image `f38cc668...`, source label `5060fa63-noncompact-scaffold`. Validated 50 × 10,000 fill lines and all 250 writer/terminal pairs. Host PSS for 1/2/3/5 viewers: 79,212/79,340/79,468/79,688 KiB; each extra native viewer (50 sockets) added 128/128/110 KiB. Idle CPU: zero ticks in each ten-second window. Echo p99: 0.847/1.885/2.444/1.786 ms. All 250 snapshots were approximate; this proves neither 10,000 retained VT lines nor browser cost. All 51 captured process identities were cleaned up. [Viewer result](https://git.kayg.org/attachments/a463f509-e921-4a38-bc41-1e54407c83b5), [raw](https://git.kayg.org/attachments/400a53fa-752e-4017-8b81-0bf6797b2ac4), [cleanup](https://git.kayg.org/attachments/ef7544fc-3fd0-424a-9230-5805450a6588). Ownership diagnosis: after 2,400 accelerated quiet churn events and 120 active-output rounds at 1,000 sessions, host PSS was 74,980 KiB. Native ordinary/mapped/resident bytes: 9,200,000 / 290,816,000 / 51,335,168. Total charged ownership 311,267,900 bytes includes nonresident reservations. This diagnostic is separate from the timing soak. A bridge run will verify the two static images’ native pool sizes before attributing the PSS difference. [Ownership receipt](https://git.kayg.org/attachments/88d0822b-f4de-4100-804d-2a22346c41b6). Completed `7539c14e` encoded-class reconciliation and `8b72bb7f` private-file CLI integration: 111 compact shim tests pass, 3 CLI integration tests pass, compact shim + CLI all-target clippy passes. Default features remain unchanged. Full final gate and remaining measurements are pending.
kayg commented 2026-10-14 16:12:08 +00:00
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Gate finding: scripts/verify iterate passes fmt, native fmt, plugin compile-out, workspace clippy and all tests, but cargo-deny rejects existing rustls0.23.45 for RUSTSEC-2026-0346/0347/0348/0349. origin/dev has the same0.23.45 dependency. The auditor names >=0.23.46 as the patched version. I will update the existing library patch version/lockfile in a separate atomic security commit, retaining its std/ring feature set and providers; this is not selection of a new foundational engine. No advisory ignore or gate relaxation. Full final gate will test the patch and size delta.

Gate finding: scripts/verify iterate passes fmt, native fmt, plugin compile-out, workspace clippy and all tests, but cargo-deny rejects existing rustls0.23.45 for RUSTSEC-2026-0346/0347/0348/0349. origin/dev has the same0.23.45 dependency. The auditor names >=0.23.46 as the patched version. I will update the existing library patch version/lockfile in a separate atomic security commit, retaining its std/ring feature set and providers; this is not selection of a new foundational engine. No advisory ignore or gate relaxation. Full final gate will test the patch and size delta.
kayg commented 2026-10-14 16:35:42 +00:00
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N=1,000 origin/dev light row now passes: 60.0005 s, one line/s/terminal, 100 echo samples. PSS/private dirty were 17,542/7,904 KiB (17.54/7.90 KiB per terminal), CPU 0.20 s, context-switch proxy 114.03/s, echo p50/p99 1.452/34.670 ms. The process census changed from 1,002 at session startup to server+agent only (two processes, zero shims) at the measured interval; 1,001 PTYs remained open. I report the observed set and flag that this is not a steady-state per-shim footprint. Load is in the raw row.

Raw: scale_light_shim_n1000.json.

N=1,000 origin/dev light row now passes: 60.0005 s, one line/s/terminal, 100 echo samples. PSS/private dirty were 17,542/7,904 KiB (17.54/7.90 KiB per terminal), CPU 0.20 s, context-switch proxy 114.03/s, echo p50/p99 1.452/34.670 ms. The process census changed from 1,002 at session startup to server+agent only (two processes, zero shims) at the measured interval; 1,001 PTYs remained open. I report the observed set and flag that this is not a steady-state per-shim footprint. Load is in the raw row. Raw: [scale_light_shim_n1000.json](https://git.kayg.org/attachments/09e4baaa-5a1b-4b4d-87fe-aa2c3b1b6853).
kayg commented 2026-10-14 17:20:33 +00:00
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Finding: the origin/dev 1,000-terminal flood run failed during setup before measurement. terminal.open was refused while opening sessions; the raw row is empty (0 bytes), so there is no result to report. Captured traceback: stderr. I’m checking whether this was transient before retrying the row.

Finding: the origin/dev 1,000-terminal flood run failed during setup before measurement. `terminal.open` was refused while opening sessions; the raw row is empty (0 bytes), so there is no result to report. Captured traceback: [stderr](https://git.kayg.org/attachments/556c472f-26e5-4a63-8ca6-ddce0d9b8a91). I’m checking whether this was transient before retrying the row.
kayg commented 2026-10-14 17:23:30 +00:00
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D270 final gate at pushed head 90a8e37afb7900f2feb8120d86cb0792caf8de0a is red solely in the existing absolute static-size checks. Default-feature x86_64: base 22,275,888 bytes, head 22,277,392 (+1,504); ARM64: base 19,704,712, head 19,705,112 (+400). Both task deltas satisfy <=16 KiB. The task base already exceeds the current absolute caps by 71,584 / 65,968 bytes; caps remain unchanged. Both outputs are static, stripped and without PT_INTERP; production trust passes, x86 key-memory check passes. Size attribution, full final gate.

Verbatim final Rust gate summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

The dispatcher stops before TypeScript on this failure. Its TypeScript fast function was run separately and exited 0: check/build/budgets pass; protocol suite 37 pass, 0 fail, 34,463 expectations; 134 streams / 11,439 schedules / zero differential divergences. TS receipt. Iteration initially detected four new rustls advisories; 8e225273 updates the existing provider/library from 0.23.45 to 0.23.46 without changing features or foundation. Cargo-deny passes on the final head. 90a8e37a itemizes the test-layout ledger; 975ceb61, 913d0ed7, b6f8cd61 record retained rows, distinct decimal corpus and the existing fresh-shell snapshot gap.

Full ppu-soak phases are finished: 2-hour soak and 30-minute corpus memory/survival checks pass, latency checks fail; process-events passes all available cases except unimplemented whole-host upgrade; memory-pressure passes (1,000/1,000 typable, working set 2,549,407,744 bytes, cap 2,676,878,131, peak 2,551,406,592, all max/oom/oom_kill counters zero). Memory, events, corpus. VM lock used for every measurement.

The 30-minute carry/native-write Rust-coverage fuzz run completed 578,521 executions in 1,801 seconds without a finding. This does not instrument native Zig coverage. Fuzz receipt. The compact codec's native coverage runner failed during Zig fuzzer bootstrap; six functional seeds and 10,000 guarded mutations pass, but coverage-guided validation remains incomplete. Remaining short VM ledger/decimal receipts are being collected; no deployment or default switch.

D270 final gate at pushed head `90a8e37afb7900f2feb8120d86cb0792caf8de0a` is red solely in the existing absolute static-size checks. Default-feature x86_64: base 22,275,888 bytes, head 22,277,392 (+1,504); ARM64: base 19,704,712, head 19,705,112 (+400). Both task deltas satisfy <=16 KiB. The task base already exceeds the current absolute caps by 71,584 / 65,968 bytes; caps remain unchanged. Both outputs are static, stripped and without PT_INTERP; production trust passes, x86 key-memory check passes. [Size attribution](https://git.kayg.org/attachments/7ee5bb73-99e0-4697-aaff-a998a1465c3c), [full final gate](https://git.kayg.org/attachments/382ee34d-9795-4a95-acdb-3ca0fbb38ee7). Verbatim final Rust gate summary: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` The dispatcher stops before TypeScript on this failure. Its TypeScript fast function was run separately and exited 0: check/build/budgets pass; protocol suite 37 pass, 0 fail, 34,463 expectations; 134 streams / 11,439 schedules / zero differential divergences. [TS receipt](https://git.kayg.org/attachments/8896d183-9adf-4212-bf02-069757067759). Iteration initially detected four new rustls advisories; `8e225273` updates the existing provider/library from 0.23.45 to 0.23.46 without changing features or foundation. Cargo-deny passes on the final head. `90a8e37a` itemizes the test-layout ledger; `975ceb61`, `913d0ed7`, `b6f8cd61` record retained rows, distinct decimal corpus and the existing fresh-shell snapshot gap. Full ppu-soak phases are finished: 2-hour soak and 30-minute corpus memory/survival checks pass, latency checks fail; process-events passes all available cases except unimplemented whole-host upgrade; memory-pressure passes (1,000/1,000 typable, working set 2,549,407,744 bytes, cap 2,676,878,131, peak 2,551,406,592, all max/oom/oom_kill counters zero). [Memory](https://git.kayg.org/attachments/73dcfb96-1db3-42be-81f5-4a352e6d6f6a), [events](https://git.kayg.org/attachments/82a22e84-4113-4f54-b797-93b964fd9679), [corpus](https://git.kayg.org/attachments/54dc1321-5b59-4a27-ae57-15076ad58a97). VM lock used for every measurement. The 30-minute carry/native-write Rust-coverage fuzz run completed 578,521 executions in 1,801 seconds without a finding. This does not instrument native Zig coverage. [Fuzz receipt](https://git.kayg.org/attachments/fb1056b5-94c8-46d4-8b4d-d8999a0dfbbf). The compact codec's native coverage runner failed during Zig fuzzer bootstrap; six functional seeds and 10,000 guarded mutations pass, but coverage-guided validation remains incomplete. Remaining short VM ledger/decimal receipts are being collected; no deployment or default switch.
kayg commented 2026-10-14 17:27:52 +00:00
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Finding: origin/dev flood at 1,000 terminals did not survive as a comparable steady-state row. The 30.018 s interval began with 1,002 multiplexer processes and 2,345,394/2,331,688 KiB PSS/private dirty (2,345/2,332 KiB per terminal); after the interval the measured process set was only 11,850/9,288 KiB, while PTYs rose from 4 to 1,004. The interval CPU counter covered only 2 common processes/11 common tasks (0.26 CPU s), so it omits the exited shims and is not comparable. The 100-sample attached echo p50/p99 was 9.811/82.565 ms. Load average changed 1.52 to 72.73. Raw row: JSON. I’m treating this as a workload failure, not a win on memory or CPU; its cause is not established by this receipt.

Finding: origin/dev flood at 1,000 terminals did not survive as a comparable steady-state row. The 30.018 s interval began with 1,002 multiplexer processes and 2,345,394/2,331,688 KiB PSS/private dirty (2,345/2,332 KiB per terminal); after the interval the measured process set was only 11,850/9,288 KiB, while PTYs rose from 4 to 1,004. The interval CPU counter covered only 2 common processes/11 common tasks (0.26 CPU s), so it omits the exited shims and is not comparable. The 100-sample attached echo p50/p99 was 9.811/82.565 ms. Load average changed 1.52 to 72.73. Raw row: [JSON](https://git.kayg.org/attachments/44f6a5da-c1a3-4273-a3d3-e8c8d8029683). I’m treating this as a workload failure, not a win on memory or CPU; its cause is not established by this receipt.
kayg commented 2026-10-14 17:32:17 +00:00
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D270 r3 handoff for review. Head 90a8e37afb7900f2feb8120d86cb0792caf8de0a is pushed to process-per-user (push receipt). Default features are unchanged; no deploy. Research contract and adoption limits are in research/process-per-user/README.md. This is a prototype handoff with failed criteria, not an adoption recommendation or a green Definition of Done.

Request Result and remaining limit
Per-session isolation Existing native ordinary/page/control/input/peer/session caps retained; smaller feature-only page quantum and exact bounded rings. Full 1,000-session cgroup test: all typable, no OOM, working set 2,549,407,744 B / cap 2,676,878,131 B / peak 2,551,406,592 B.
Continuing memory growth 2-hour settled PSS median +176 KiB, slope +106.592 KiB/hour; FD/thread growth 0/0, survivors 1,000/1,000. Previous run was +323 MiB. Per-session numeric ownership and scoped heap-allocation ledgers added. The separate accelerated diagnosis and image bridge do not fully attribute every resident byte in the long-run warmup.
Fairness One 4-KiB bulk attempt per turn; input and small attached reads promoted. Focused 1,000-session/100 bulk-producer test: quiet echo p99 0.421830 idle / 0.763913 flooding, +0.342083 ms; 42,390,635 B/s. PASS for <=2 ms over idle. The broader active-probe soak still fails: peak p99 112.157323 ms.
Idle ownership Release retired-viewer capacity: exactly 672 B/session saved. Requested allocation ledger before -> after at 1/10/100/1,000: 1,845 -> 1,173; 17,634 -> 10,914; 171,828 -> 104,628; 1,819,368 -> 1,147,368 B. These are test-layout requested bytes, not shipping PSS or a byte-complete explanation of 7.18 KiB total-PSS/session.
Compact history Separate opt-in compact-history, UTF-8 text plus attribute runs with exact native metadata; full 10,000 x 72 line replay/search-span/selection-span/reflow fixtures pass. Explicit full-compaction PSS increment: repeated-text body 740 KiB (three runs), decimal body 2,576 KiB; encoded data 353,484 / 2,268,492 B. Both exceed contextual 407 KiB reference; its exact corpus/machine is unknown. Automatic reactor compaction has no idle continuation.
Extra viewer, 50 filled terminals Host PSS for 1/2/3/5 native viewers: 79,212/79,340/79,468/79,688 KiB; extra viewer adds 128/128/110 KiB. Zero idle ticks per ten-second window. All 250 repaint states approximate: no browser-equivalence or full-retained-history claim.

Focused fairness, all four idle ledgers and field layout, repeated-text history, decimal history, viewer result, image bridge. Ledger's first 1,000-session attempt failed EMFILE; retry raised the fixture's nofile limit to 16,384 and passed. VM load is recorded in each receipt; the successful layout/1,000 allocation-count run started at 44.74/19.12/7.71, so it is not a timing claim.

Full ppu-soak rerun, source 5f897f93, image SHA256 5abad0220d398ef592e78407270ce8be495511e067d28eb987122a4c780b6494:

Phase Memory / resources Echo p99 first / last / peak Verdict
2-hour soak +176 KiB, +106.592 KiB/h; 0 FD/thread growth; 1,000 survivors 8.003960 / 10.301145 / 112.157323 ms FAIL latency
30-minute corpus -64 KiB, +301.361 KiB/h; 0 FD/thread growth; 1,000 survivors 9.181482 / 12.055228 / 93.950928 ms FAIL latency
Process events Daemon restart, shell SIGKILL/HUP, child HUP, live/startup FD exhaustion pass Whole-host D128 adapter unimplemented FAIL upgrade
Memory pressure All 1,000 sessions typable; max/oom/oom_kill counters zero Separate from latency gates PASS

Suite environment and complete outcomes, two-hour raw, corpus raw. Separate fault suite passes its seven available cases, including the cfg(test) Rust-panic fixture; upgrade and memory are explicitly NOT RUN there, with memory covered by the separate suite phase. Fault outcomes. Property fixture: 20,000 cases, 19,864 replayed / 136 rejected / zero divergent (receipt). Rust-coverage carry/native-write fuzz: 578,521 runs / 1,801 seconds, no finding; native Zig coverage bootstrap failed and remains incomplete (bootstrap).

Author checklist: reviewed allocator-owner lifetimes and refusal cleanup, decoder bounds/exactness, control-string continuation, input/cursor caps, stale descriptor identities, signal opt-in, numeric-only receipts and same-UID/create-new/0600 creation. Real CLI diagnostics tests: 3 pass (receipt); final process-feature suite 108 pass, compact suite 113 pass. Native crash/abort and blocking child reaping still affect the shared host; actual per-person PAM/revocation integration, whole-host FD/state upgrade, exact fresh-shell export and complete native coverage remain adoption blockers. No foundational engine was selected. Evidence stayed outside the checkout; no issue closure.

Final scripts/verify fast output, verbatim summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Full gate. Static failure: existing absolute caps; measured task deltas +1,504 B x86_64 / +400 B ARM64 satisfy <=16 KiB. The retained task-base binaries also fail those same caps (baseline check, size attribution). TypeScript fast function passes separately (receipt). Stop for independent review; do not adopt the prototype by default.

D270 r3 handoff for review. Head `90a8e37afb7900f2feb8120d86cb0792caf8de0a` is pushed to `process-per-user` ([push receipt](https://git.kayg.org/attachments/b56eb3cf-9a87-4228-9c3c-49445177e80d)). Default features are unchanged; no deploy. Research contract and adoption limits are in `research/process-per-user/README.md`. This is a prototype handoff with failed criteria, not an adoption recommendation or a green Definition of Done. | Request | Result and remaining limit | |---|---| | Per-session isolation | Existing native ordinary/page/control/input/peer/session caps retained; smaller feature-only page quantum and exact bounded rings. Full 1,000-session cgroup test: all typable, no OOM, working set 2,549,407,744 B / cap 2,676,878,131 B / peak 2,551,406,592 B. | | Continuing memory growth | 2-hour settled PSS median +176 KiB, slope +106.592 KiB/hour; FD/thread growth 0/0, survivors 1,000/1,000. Previous run was +323 MiB. Per-session numeric ownership and scoped heap-allocation ledgers added. The separate accelerated diagnosis and image bridge do not fully attribute every resident byte in the long-run warmup. | | Fairness | One 4-KiB bulk attempt per turn; input and small attached reads promoted. Focused 1,000-session/100 bulk-producer test: quiet echo p99 0.421830 idle / 0.763913 flooding, +0.342083 ms; 42,390,635 B/s. PASS for <=2 ms over idle. The broader active-probe soak still fails: peak p99 112.157323 ms. | | Idle ownership | Release retired-viewer capacity: exactly 672 B/session saved. Requested allocation ledger before -> after at 1/10/100/1,000: 1,845 -> 1,173; 17,634 -> 10,914; 171,828 -> 104,628; 1,819,368 -> 1,147,368 B. These are test-layout requested bytes, not shipping PSS or a byte-complete explanation of 7.18 KiB total-PSS/session. | | Compact history | Separate opt-in `compact-history`, UTF-8 text plus attribute runs with exact native metadata; full 10,000 x 72 line replay/search-span/selection-span/reflow fixtures pass. Explicit full-compaction PSS increment: repeated-text body 740 KiB (three runs), decimal body 2,576 KiB; encoded data 353,484 / 2,268,492 B. Both exceed contextual 407 KiB reference; its exact corpus/machine is unknown. Automatic reactor compaction has no idle continuation. | | Extra viewer, 50 filled terminals | Host PSS for 1/2/3/5 native viewers: 79,212/79,340/79,468/79,688 KiB; extra viewer adds 128/128/110 KiB. Zero idle ticks per ten-second window. All 250 repaint states approximate: no browser-equivalence or full-retained-history claim. | [Focused fairness](https://git.kayg.org/attachments/8323fe2e-3ee6-4a5f-95e7-2fbae09d2cd5), [all four idle ledgers and field layout](https://git.kayg.org/attachments/d6cba59a-7d45-4315-a6e6-1cf330e84133), [repeated-text history](https://git.kayg.org/attachments/fbf07ebe-3455-4f44-919f-08993a8c075e), [decimal history](https://git.kayg.org/attachments/12206596-886c-4514-9f77-405a3b399cdb), [viewer result](https://git.kayg.org/attachments/a463f509-e921-4a38-bc41-1e54407c83b5), [image bridge](https://git.kayg.org/attachments/924e84b8-2f86-4327-a254-a1246dc69463). Ledger's first 1,000-session attempt failed EMFILE; retry raised the fixture's nofile limit to 16,384 and passed. VM load is recorded in each receipt; the successful layout/1,000 allocation-count run started at 44.74/19.12/7.71, so it is not a timing claim. Full `ppu-soak` rerun, source `5f897f93`, image SHA256 `5abad0220d398ef592e78407270ce8be495511e067d28eb987122a4c780b6494`: | Phase | Memory / resources | Echo p99 first / last / peak | Verdict | |---|---|---|---| | 2-hour soak | +176 KiB, +106.592 KiB/h; 0 FD/thread growth; 1,000 survivors | 8.003960 / 10.301145 / 112.157323 ms | FAIL latency | | 30-minute corpus | -64 KiB, +301.361 KiB/h; 0 FD/thread growth; 1,000 survivors | 9.181482 / 12.055228 / 93.950928 ms | FAIL latency | | Process events | Daemon restart, shell SIGKILL/HUP, child HUP, live/startup FD exhaustion pass | Whole-host D128 adapter unimplemented | FAIL upgrade | | Memory pressure | All 1,000 sessions typable; max/oom/oom_kill counters zero | Separate from latency gates | PASS | [Suite environment and complete outcomes](https://git.kayg.org/attachments/96f6f6c7-019c-4a18-825c-f05399e94cdf), [two-hour raw](https://git.kayg.org/attachments/947db6bb-dfaf-4d5d-838d-cb055833546c), [corpus raw](https://git.kayg.org/attachments/54dc1321-5b59-4a27-ae57-15076ad58a97). Separate fault suite passes its seven available cases, including the cfg(test) Rust-panic fixture; upgrade and memory are explicitly NOT RUN there, with memory covered by the separate suite phase. [Fault outcomes](https://git.kayg.org/attachments/0820bbac-4912-489c-bb90-39bbbc4a3859). Property fixture: 20,000 cases, 19,864 replayed / 136 rejected / zero divergent ([receipt](https://git.kayg.org/attachments/2babfc1c-4de1-49b1-91f9-f1e4fadbf472)). Rust-coverage carry/native-write fuzz: 578,521 runs / 1,801 seconds, no finding; native Zig coverage bootstrap failed and remains incomplete ([bootstrap](https://git.kayg.org/attachments/5530ee0d-21b3-4f85-899c-bfceb84cadc3)). Author checklist: reviewed allocator-owner lifetimes and refusal cleanup, decoder bounds/exactness, control-string continuation, input/cursor caps, stale descriptor identities, signal opt-in, numeric-only receipts and same-UID/create-new/0600 creation. Real CLI diagnostics tests: 3 pass ([receipt](https://git.kayg.org/attachments/feb61373-6a58-43ed-a93f-56dcda75576e)); final process-feature suite 108 pass, compact suite 113 pass. Native crash/abort and blocking child reaping still affect the shared host; actual per-person PAM/revocation integration, whole-host FD/state upgrade, exact fresh-shell export and complete native coverage remain adoption blockers. No foundational engine was selected. Evidence stayed outside the checkout; no issue closure. Final `scripts/verify fast` output, verbatim summary: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` [Full gate](https://git.kayg.org/attachments/382ee34d-9795-4a95-acdb-3ca0fbb38ee7). Static failure: existing absolute caps; measured task deltas +1,504 B x86_64 / +400 B ARM64 satisfy <=16 KiB. The retained task-base binaries also fail those same caps ([baseline check](https://git.kayg.org/attachments/86232501-19ec-4d43-ab03-da0ec957480d), [size attribution](https://git.kayg.org/attachments/7ee5bb73-99e0-4697-aaff-a998a1465c3c)). TypeScript fast function passes separately ([receipt](https://git.kayg.org/attachments/8896d183-9adf-4212-bf02-069757067759)). Stop for independent review; do not adopt the prototype by default.
kayg commented 2026-10-14 17:33:28 +00:00
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Post-handoff cleanup: disposable r3 native/baseline builds and reused r2 build-owned/fuzz-owned/fuzz-source removed. Preserved gate logs, selected raw receipts and both head binaries under r3/evidence. Completed four-scale ledger receipts are attached. Redundant ledger wrapper/client stopped by exact verified own PIDs. Git HEAD and origin/process-per-user both 90a8e37afb. Only pre-existing scripts/pycache/ remains untracked. No deployment; issue left open.

Post-handoff cleanup: disposable r3 native/baseline builds and reused r2 build-owned/fuzz-owned/fuzz-source removed. Preserved gate logs, selected raw receipts and both head binaries under r3/evidence. Completed four-scale ledger receipts are attached. Redundant ledger wrapper/client stopped by exact verified own PIDs. Git HEAD and origin/process-per-user both 90a8e37afb7900f2feb8120d86cb0792caf8de0a. Only pre-existing scripts/__pycache__/ remains untracked. No deployment; issue left open.
kayg commented 2026-10-14 17:33:49 +00:00
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Step complete: the process-per-user 1,000-terminal flood row completed with 100 yes terminals over 30.001 s. During the interval it measured 102,400/97,696 KiB PSS/private dirty total (102.4/97.7 KiB per terminal), 29.41 CPU s, 88.66 context switches/s, and attached echo p50/p99 10.761/16.145 ms. tmux 3.8 measured 444.1/443.4 KiB per terminal, 29.99 CPU s, 7.47 context switches/s, and 197.575/285.770 ms echo. PPU wins memory and echo, tmux wins context-switch rate; their client processes differ because PPU has only a local UNIX protocol peer, no browser/WebSocket layer. Raw row: JSON.

Step complete: the process-per-user 1,000-terminal flood row completed with 100 `yes` terminals over 30.001 s. During the interval it measured 102,400/97,696 KiB PSS/private dirty total (102.4/97.7 KiB per terminal), 29.41 CPU s, 88.66 context switches/s, and attached echo p50/p99 10.761/16.145 ms. tmux 3.8 measured 444.1/443.4 KiB per terminal, 29.99 CPU s, 7.47 context switches/s, and 197.575/285.770 ms echo. PPU wins memory and echo, tmux wins context-switch rate; their client processes differ because PPU has only a local UNIX protocol peer, no browser/WebSocket layer. Raw row: [JSON](https://git.kayg.org/attachments/e3115f6f-1d38-46cd-ae39-cdcebda91313).
kayg commented 2026-10-14 17:44:52 +00:00
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Continuation r4 start: process-per-user at 90a8e37afb; task merge base b182529fcc. Read #205 history; no parent recorded. D270 order: independent idle-host PSS slope and kernel PTY accounting, mixed-load stalls, throughput, compact history, then whole-host upgrade with a failing test first. Heavy builds/tests use build-slot; measurements use the named perf VM and flock -w 3600. Production defaults unchanged; push only process-per-user, no deploy. Existing untracked scripts/pycache/ left untouched.

Continuation r4 start: process-per-user at 90a8e37afb7900f2feb8120d86cb0792caf8de0a; task merge base b182529fcc38ed65c53ad323b55e444beaa4e2a7. Read #205 history; no parent recorded. D270 order: independent idle-host PSS slope and kernel PTY accounting, mixed-load stalls, throughput, compact history, then whole-host upgrade with a failing test first. Heavy builds/tests use build-slot; measurements use the named perf VM and flock -w 3600. Production defaults unchanged; push only process-per-user, no deploy. Existing untracked scripts/__pycache__/ left untouched.
kayg commented 2026-10-14 17:45:00 +00:00
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Comparison protocol: all measurements ran on infraternal-perf-test (4 vCPU Intel i9-9900K, Linux 6.12.111+deb13-amd64), under flock -w 3600 /var/lock/perf-bench.lock and systemd-run --user --scope -p CPUWeight=10000. tmux was source-built at latest stable release 3.8 (tag 7f2a35a; distro tmux was 3.5a), default config except history-limit=10000. The other images were static x86_64-musl: standalone process-per-user 12f657f with indexed reactor 9756dd77, and origin/dev 97366a3 with server + embedded infraternal agent + per-session shims. All terminals were 80×24; idle used sh -c 'exec sleep inf', output rows used bash. Shells are excluded. The chart rows below preserve their exact 10,000-line 72-column filler and 50-filled-terminal viewer workloads.
Scale table memory is multiplexer-owned PSS/private dirty per terminal; attached client process memory is separate and excluded. CPU is total multiplexer-process CPU seconds with per-terminal seconds in parentheses. /proc schedstat run slices/s and context-switches/s are shown as wakeup proxies; neither is a wakeup counter. perf was unavailable and perf_event_paranoid=3. The separate Linux PTY reference estimate is 27.9 KiB/PTY and is not included in process PSS/private dirty. Each JSON records load before/after, PTY counts, version and machine details. Chart summary CSV · scale summary CSV.
Published Mac reference ratios for its “new” row versus tmux are 4.24× at startup (10.6/2.50 MiB), 4.53× per empty terminal (68/15 KiB), 0.081× for a 10,000-line terminal (407 KiB/4.89 MiB), and 0.54× per client (85/157 KiB). Our bridge is Linux PSS/private dirty with tmux 3.8, whereas that chart is macOS 26.6.2 phys_footprint with tmux 3.5a; treat the reference ratios as a version/OS bridge, not a same-machine result.

Measurement N tmux 3.8 Process-per-user 12f657f / reactor 9756dd77 origin/dev 97366a3 (server + agent + shims)
Startup, one empty terminal 1 2,451/1,140 KiB total (1.00×/1.00× tmux); JSON 5,076/1,012 KiB total (2.07× / 0.89× tmux); JSON 23,583/9,512 KiB total (9.62× / 8.34× tmux); shim alone 3,017.00/1,080.00 KiB; JSON
Per empty terminal increment (N=1→10) 1→10 slope N=1→10 1.44/3.56 KiB/added terminal (1.00×/1.00× tmux); N=1000 average 9.43/8.08 KiB/t; N=1/N=10/N=1000 slope N=1→10 1.33/1.33 KiB/added terminal (0.92×/0.38× tmux); N=1000 average 6.26/2.20 KiB/t; N=1/N=10/N=1000 slope N=1→10 1,337.00/1,336.89 KiB/added terminal (925.62×/376.00× tmux); N=1000 average 1,101.81/1,088.17 KiB/t; shim alone @N=1000 1,082.16/1,078.16 KiB/t (749.19×/303.23× vs tmux slope); N=1/N=10/N=1000
One terminal filled with 10,000 numbered 72-column lines 1 total 7,545/6,208 KiB (1.00×/1.00×); added terminal/shim 5,094/5,068 KiB (1.00×/1.00× tmux); JSON total 14,356/9,652 KiB (1.90×/1.55×); added terminal/shim 9,280/8,640 KiB (1.82×/1.70× tmux); JSON total 31,675/17,412 KiB (4.20×/2.80×); added terminal/shim 11,157/9,028 KiB (2.19×/1.78× tmux); JSON
One viewer on 50 filled terminals 50 server delta 186/664 + attach process 1,224/552 = 1,410/1,216 KiB (1.00×/1.00× tmux total); echo 0.794/3.241 ms; JSON host delta 0/0 KiB; local UNIX peer, no WebSocket/browser (connection-memory ratio not comparable) (n/a/n/a tmux total); echo 0.425/1.729 ms (0.53×/0.53× tmux); JSON server + agent + shims delta 160/160 KiB; browser/client process excluded (0.11×/0.13× tmux total); echo 0.849/1.684 ms (1.07×/0.52× tmux); JSON
Idle, never printed 1 PSS/PD 2,565.0/1,140.0 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 5,084.0/1,020.0 KiB/t (1.98×/0.89× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 21,351.0/7,248.0 KiB/t (8.32×/6.36× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 3,017.0/1,080.0 KiB/t; JSON
Idle, never printed 10 PSS/PD 257.8/117.2 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 509.6/103.2 KiB/t (1.98×/0.88× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 3,338.4/1,928.0 KiB/t (12.95×/16.45× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 1,464.4/1,078.4 KiB/t; JSON
Idle, never printed 100 PSS/PD 30.0/16.4 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 52.1/11.5 KiB/t (1.74×/0.70× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 1,284.7/1,143.7 KiB/t (42.78×/69.91× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 1,122.3/1,078.3 KiB/t; JSON
Idle, never printed 1000 PSS/PD 9.4/8.1 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 6.3/2.2 KiB/t (0.66×/0.27× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 1,101.8/1,088.2 KiB/t (116.82×/134.61× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 1,082.2/1,078.2 KiB/t; JSON
Filled, 2,024 numbered 80-column lines 1 PSS/PD 3,633.0/2,248.0 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 7,292.0/2,588.0 KiB/t (2.01×/1.15× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 25,243.0/10,948.0 KiB/t (6.95×/4.87× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 4,705.0/2,576.0 KiB/t; JSON
Filled, 2,024 numbered 80-column lines 10 PSS/PD 1,172.8/1,045.6 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 2,116.0/1,645.6 KiB/t (1.80×/1.57× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 4,895.4/3,466.0 KiB/t (4.17×/3.31× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 2,987.0/2,582.0 KiB/t; JSON
Filled, 2,024 numbered 80-column lines 100 PSS/PD 945.5/933.2 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 1,044.4/997.4 KiB/t (1.10×/1.07× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON PSS/PD 2,796.2/2,654.2 KiB/t (2.96×/2.84× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 2,625.6/2,580.6 KiB/t; JSON
Filled, 2,024 numbered 80-column lines 1000 PSS/PD 923.6/922.3 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; JSON INCOMPARABLE: retained 818/2,024 lines; observed 921.72/917.02 KiB/t at lower retention. JSON INVALID: shim-only 0/0 KiB/t in post-fill census despite 1,000 generator ACKs and 2,024 ordered lines; observed post-sample total 13.08/10.21 KiB/t is not a memory win. JSON
Light, 1 line/s for 60 s 1 PSS/PD 2,350.0/1,420.0 KiB/t (1.00×/1.00× tmux); CPU 0.05 s (0.05000/t; 1.00× tmux); sched slices 6.23/s; CS 6.23/s (6.2333/t/s; 1.00× tmux); echo 0.411/1.631 ms; JSON PSS/PD 7,844.0/3,140.0 KiB/t (3.34×/2.21× tmux); CPU 0.02 s (0.02000/t; 0.40× tmux); sched slices 4.33/s; CS 4.33/s (4.3333/t/s; 0.70× tmux); echo 0.385/4.546 ms (0.94× / 2.79× tmux); JSON PSS/PD 27,519.0/13,224.0 KiB/t (11.71×/9.31× tmux); CPU 0.18 s (0.18000/t; 3.60× tmux); sched slices 123.58/s; CS 123.58/s (123.5820/t/s; 19.83× tmux); echo 1.408/2.101 ms (3.42× / 1.29× tmux); shim-only 3,217.0/1,088.0 KiB/t; JSON
Light, 1 line/s for 60 s 10 PSS/PD 248.7/165.2 KiB/t (1.00×/1.00× tmux); CPU 0.06 s (0.00600/t; 1.00× tmux); sched slices 6.92/s; CS 6.92/s (0.6917/t/s; 1.00× tmux); echo 0.369/1.279 ms; JSON PSS/PD 701.2/230.8 KiB/t (2.82×/1.40× tmux); CPU 0.01 s (0.00100/t; 0.17× tmux); sched slices 6.82/s; CS 6.82/s (0.6817/t/s; 0.99× tmux); echo 0.196/0.554 ms (0.53× / 0.43× tmux); JSON PSS/PD 3,439.4/2,010.0 KiB/t (13.83×/12.17× tmux); CPU 0.20 s (0.02000/t; 3.33× tmux); sched slices 122.53/s; CS 122.53/s (12.2532/t/s; 17.72× tmux); echo 0.932/8.406 ms (2.53× / 6.57× tmux); shim-only 1,494.2/1,089.2 KiB/t; JSON
Light, 1 line/s for 60 s 100 PSS/PD 61.6/53.7 KiB/t (1.00×/1.00× tmux); CPU 0.20 s (0.00200/t; 1.00× tmux); sched slices 12.65/s; CS 12.65/s (0.1265/t/s; 1.00× tmux); echo 0.388/2.993 ms; JSON PSS/PD 172.4/125.4 KiB/t (2.80×/2.33× tmux); CPU 0.10 s (0.00100/t; 0.50× tmux); sched slices 22.33/s; CS 22.33/s (0.2233/t/s; 1.77× tmux); echo 0.243/3.636 ms (0.63× / 1.21× tmux); JSON PSS/PD 1,365.8/1,223.8 KiB/t (22.17×/22.78× tmux); CPU 0.25 s (0.00250/t; 1.25× tmux); sched slices 247.25/s; CS 247.25/s (2.4725/t/s; 19.55× tmux); echo 0.954/26.354 ms (2.46× / 8.80× tmux); shim-only 1,134.2/1,089.2 KiB/t; JSON
Light, 1 line/s for 60 s 1000 PSS/PD 42.5/41.7 KiB/t (1.00×/1.00× tmux); CPU 4.06 s (0.00406/t; 1.00× tmux); sched slices 41.52/s; CS 41.52/s (0.0415/t/s; 1.00× tmux); echo 2.756/54.406 ms; JSON PSS/PD 119.2/114.5 KiB/t (2.80×/2.74× tmux); CPU 1.82 s (0.00182/t; 0.45× tmux); sched slices 51.38/s; CS 51.38/s (0.0514/t/s; 1.24× tmux); echo 0.252/33.097 ms (0.09× / 0.61× tmux); JSON INVALID: shim-only 0/0 KiB/t at interval end; post-sample total 17.54/7.90 KiB/t; CPU 0.20 s is incomplete; echo 1.452/34.670 ms. JSON
Flood, N=1 rounds to zero flooded terminals (idle echo control) 1 PSS/PD 2,274.0/1,400.0 KiB/t (1.00×/1.00× tmux); CPU 0.02 s (0.02000/t; 1.00× tmux); sched slices 7.17/s; CS 7.17/s (7.1665/t/s; 1.00× tmux); echo 0.370/0.623 ms; 0 flooded terminals; JSON PSS/PD 5,108.0/1,044.0 KiB/t (2.25×/0.75× tmux); CPU 0.02 s (0.02000/t; 1.00× tmux); sched slices 6.13/s; CS 6.13/s (6.1332/t/s; 0.86× tmux); echo 0.373/2.190 ms (1.01× / 3.51× tmux); 0 flooded terminals; JSON PSS/PD 23,799.0/9,504.0 KiB/t (10.47×/6.79× tmux); CPU 0.23 s (0.23000/t; 11.50× tmux); sched slices 240.06/s; CS 240.06/s (240.0608/t/s; 33.50× tmux); echo 1.709/14.784 ms (4.62× / 23.71× tmux); shim-only 3,149.0/1,084.0 KiB/t; 0 flooded terminals; JSON
Flood, 10% yes for 30 s 10 PSS/PD 582.5/501.2 KiB/t (1.00×/1.00× tmux); CPU 29.90 s (2.99000/t; 1.00× tmux); sched slices 8.83/s; CS 8.83/s (0.8833/t/s; 1.00× tmux); echo 1.099/1.948 ms; JSON PSS/PD 2,140.4/1,670.0 KiB/t (3.67×/3.33× tmux); CPU 29.31 s (2.93100/t; 0.98× tmux); sched slices 533.09/s; CS 533.06/s (53.3059/t/s; 60.35× tmux); echo 0.279/0.633 ms (0.25× / 0.33× tmux); JSON PSS/PD 5,917.6/4,489.6 KiB/t (10.16×/8.96× tmux); CPU 22.75 s (2.27500/t; 0.76× tmux); sched slices 10,300.71/s; CS 10,300.64/s (1,030.0643/t/s; 1166.13× tmux); echo 1.129/2.192 ms (1.03× / 1.13× tmux); shim-only 4,038.8/3,634.4 KiB/t; JSON
Flood, 10% yes for 30 s 100 PSS/PD 387.1/379.5 KiB/t (1.00×/1.00× tmux); CPU 29.99 s (0.29990/t; 1.00× tmux); sched slices 13.47/s; CS 13.47/s (0.1347/t/s; 1.00× tmux); echo 8.826/14.745 ms; JSON PSS/PD 244.6/197.6 KiB/t (0.63×/0.52× tmux); CPU 29.93 s (0.29930/t; 1.00× tmux); sched slices 84.17/s; CS 84.17/s (0.8417/t/s; 6.25× tmux); echo 1.134/1.832 ms (0.13× / 0.12× tmux); JSON PSS/PD 4,261.6/4,119.1 KiB/t (11.01×/10.85× tmux); CPU 91.57 s (0.91570/t; 3.05× tmux); sched slices 101,492.50/s; CS 101,492.56/s (1,014.9256/t/s; 7536.68× tmux); echo 0.959/26.238 ms (0.11× / 1.78× tmux); shim-only 3,462.0/3,416.4 KiB/t; JSON
Flood, 10% yes for 30 s 1000 PSS/PD 444.1/443.4 KiB/t (1.00×/1.00× tmux); CPU 29.99 s (0.02999/t; 1.00× tmux); sched slices 7.47/s; CS 7.47/s (0.0075/t/s; 1.00× tmux); echo 197.575/285.770 ms; JSON PSS/PD 102.4/97.7 KiB/t (0.23×/0.22× tmux); CPU 29.41 s (0.02941/t; 0.98× tmux); sched slices 88.66/s; CS 88.66/s (0.0887/t/s; 11.87× tmux); echo 10.761/16.145 ms (0.05× / 0.06× tmux); JSON INVALID: shims exited during flood; pre-interval total 2,345.39/2,331.69 KiB/t, shim-only 2,325.48/2,321.38 KiB/t; end total 11.85/9.29 KiB/t; CPU 0.26 s covers only 2 common processes; echo 9.811/82.565 ms. JSON

Measured losses and limits: tmux wins the one-terminal startup row and the 10,000-line history increment against this Linux process-per-user prototype (9.28 MiB vs tmux 4.97 MiB, 1.82×). The published Mac reference’s “new” row wins that filled-memory ratio (0.081×); our Linux row does not reproduce that result. The prototype uses the same Ghostty VT page storage as the production shim; the terminal module documents cell capacity and sparse style/grapheme storage, which is the main measured-history cost. Production also pays one static process image per terminal: at N=1,000 empty the shim alone is 1,082.16/1,078.16 KiB PSS/private dirty. The N=1→10 total increment is 1,337/1,336.89 KiB, 925.6×/376.0× tmux’s added-terminal PSS/private-dirty increment.
The process-per-user flood memory win at N=1,000 is retention-limited: its host caps aggregate ring and history at 64 MiB each, while tmux retained under its 10,000-line setting. The N=1,000 process-per-user 2,024-line row retained only 818 lines and is marked incomparable. The origin/dev 1,000-session filled/light/flood rows lost all shims from the post-workload process census; their low post-sample memory/CPU is not counted as a win. N=1 flood has zero whole terminals at 10% after integer rounding and is only an idle echo control.

Comparison protocol: all measurements ran on `infraternal-perf-test` (4 vCPU Intel i9-9900K, Linux 6.12.111+deb13-amd64), under `flock -w 3600 /var/lock/perf-bench.lock` and `systemd-run --user --scope -p CPUWeight=10000`. tmux was source-built at latest stable release 3.8 (tag `7f2a35a`; distro tmux was 3.5a), default config except `history-limit=10000`. The other images were static x86_64-musl: standalone process-per-user `12f657f` with indexed reactor `9756dd77`, and `origin/dev` `97366a3` with server + embedded infraternal agent + per-session shims. All terminals were 80×24; idle used `sh -c 'exec sleep inf'`, output rows used bash. Shells are excluded. The chart rows below preserve their exact 10,000-line 72-column filler and 50-filled-terminal viewer workloads. Scale table memory is multiplexer-owned PSS/private dirty per terminal; attached client process memory is separate and excluded. CPU is total multiplexer-process CPU seconds with per-terminal seconds in parentheses. `/proc` schedstat run slices/s and context-switches/s are shown as wakeup proxies; neither is a wakeup counter. `perf` was unavailable and `perf_event_paranoid=3`. The separate Linux PTY reference estimate is 27.9 KiB/PTY and is not included in process PSS/private dirty. Each JSON records load before/after, PTY counts, version and machine details. [Chart summary CSV](https://git.kayg.org/attachments/95f4ae99-fcc4-4d30-840d-e855b000f04c) · [scale summary CSV](https://git.kayg.org/attachments/6407b19a-76d9-4e9c-a211-3531df0cb693). Published Mac reference ratios for its “new” row versus tmux are 4.24× at startup (10.6/2.50 MiB), 4.53× per empty terminal (68/15 KiB), 0.081× for a 10,000-line terminal (407 KiB/4.89 MiB), and 0.54× per client (85/157 KiB). Our bridge is Linux PSS/private dirty with tmux 3.8, whereas that chart is macOS 26.6.2 phys_footprint with tmux 3.5a; treat the reference ratios as a version/OS bridge, not a same-machine result. | Measurement | N | tmux 3.8 | Process-per-user 12f657f / reactor 9756dd77 | origin/dev 97366a3 (server + agent + shims) | |---|---:|---|---|---| | Startup, one empty terminal | 1 | 2,451/1,140 KiB total (1.00×/1.00× tmux); [JSON](https://git.kayg.org/attachments/ead512ce-24ba-43d5-932c-2df5ea530ca0) | 5,076/1,012 KiB total (2.07× / 0.89× tmux); [JSON](https://git.kayg.org/attachments/88024f6c-8007-4d6a-8a7b-25a8c0c76421) | 23,583/9,512 KiB total (9.62× / 8.34× tmux); shim alone 3,017.00/1,080.00 KiB; [JSON](https://git.kayg.org/attachments/56ea57ad-c197-4d1e-b2e3-c41fde657fc2) | | Per empty terminal increment (N=1→10) | 1→10 | slope N=1→10 1.44/3.56 KiB/added terminal (1.00×/1.00× tmux); N=1000 average 9.43/8.08 KiB/t; [N=1](https://git.kayg.org/attachments/41116e80-e7e9-44c3-9fc2-f26c12a82fb7)/[N=10](https://git.kayg.org/attachments/a2b4b157-5d8c-447f-af07-7e8322903697)/[N=1000](https://git.kayg.org/attachments/77c7a0bb-f929-439c-a0f7-ab4b7ff26516) | slope N=1→10 1.33/1.33 KiB/added terminal (0.92×/0.38× tmux); N=1000 average 6.26/2.20 KiB/t; [N=1](https://git.kayg.org/attachments/8076c6fe-6897-4714-b29c-572632b0feb4)/[N=10](https://git.kayg.org/attachments/d8656593-0117-45e5-b387-caa81923934a)/[N=1000](https://git.kayg.org/attachments/48ceb8f4-ab1e-41d2-8086-73bf9bda4fed) | slope N=1→10 1,337.00/1,336.89 KiB/added terminal (925.62×/376.00× tmux); N=1000 average 1,101.81/1,088.17 KiB/t; shim alone @N=1000 1,082.16/1,078.16 KiB/t (749.19×/303.23× vs tmux slope); [N=1](https://git.kayg.org/attachments/7a25a9f4-f483-4e66-9186-fc752b493ed2)/[N=10](https://git.kayg.org/attachments/66b490da-3c97-43ef-b118-a282577e11e7)/[N=1000](https://git.kayg.org/attachments/6ff673b3-28f8-4adf-8b81-1f1081c9f099) | | One terminal filled with 10,000 numbered 72-column lines | 1 | total 7,545/6,208 KiB (1.00×/1.00×); added terminal/shim 5,094/5,068 KiB (1.00×/1.00× tmux); [JSON](https://git.kayg.org/attachments/664d5b1d-9957-4ddf-bb0b-f534ffd69b03) | total 14,356/9,652 KiB (1.90×/1.55×); added terminal/shim 9,280/8,640 KiB (1.82×/1.70× tmux); [JSON](https://git.kayg.org/attachments/a168a2c9-e69a-45d8-9e21-0baad8d9ca40) | total 31,675/17,412 KiB (4.20×/2.80×); added terminal/shim 11,157/9,028 KiB (2.19×/1.78× tmux); [JSON](https://git.kayg.org/attachments/652fb317-bed1-4acb-b874-c0f2d28f155e) | | One viewer on 50 filled terminals | 50 | server delta 186/664 + attach process 1,224/552 = 1,410/1,216 KiB (1.00×/1.00× tmux total); echo 0.794/3.241 ms; [JSON](https://git.kayg.org/attachments/0d70ef9a-880e-442e-9960-949ba5dacb47) | host delta 0/0 KiB; local UNIX peer, no WebSocket/browser (connection-memory ratio not comparable) (n/a/n/a tmux total); echo 0.425/1.729 ms (0.53×/0.53× tmux); [JSON](https://git.kayg.org/attachments/e973f0eb-f19b-4b04-b0ea-5d8bed9aecc8) | server + agent + shims delta 160/160 KiB; browser/client process excluded (0.11×/0.13× tmux total); echo 0.849/1.684 ms (1.07×/0.52× tmux); [JSON](https://git.kayg.org/attachments/56a6bb41-e192-41e9-882c-28dd6921fa85) | | Idle, never printed | 1 | PSS/PD 2,565.0/1,140.0 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/41116e80-e7e9-44c3-9fc2-f26c12a82fb7) | PSS/PD 5,084.0/1,020.0 KiB/t (1.98×/0.89× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/8076c6fe-6897-4714-b29c-572632b0feb4) | PSS/PD 21,351.0/7,248.0 KiB/t (8.32×/6.36× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 3,017.0/1,080.0 KiB/t; [JSON](https://git.kayg.org/attachments/7a25a9f4-f483-4e66-9186-fc752b493ed2) | | Idle, never printed | 10 | PSS/PD 257.8/117.2 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/a2b4b157-5d8c-447f-af07-7e8322903697) | PSS/PD 509.6/103.2 KiB/t (1.98×/0.88× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/d8656593-0117-45e5-b387-caa81923934a) | PSS/PD 3,338.4/1,928.0 KiB/t (12.95×/16.45× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 1,464.4/1,078.4 KiB/t; [JSON](https://git.kayg.org/attachments/66b490da-3c97-43ef-b118-a282577e11e7) | | Idle, never printed | 100 | PSS/PD 30.0/16.4 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/75e17520-a1a9-4de1-a83b-ad31fd53f3eb) | PSS/PD 52.1/11.5 KiB/t (1.74×/0.70× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/224b1424-9a4b-4e7b-a871-30fc439a4f22) | PSS/PD 1,284.7/1,143.7 KiB/t (42.78×/69.91× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 1,122.3/1,078.3 KiB/t; [JSON](https://git.kayg.org/attachments/d100907e-f297-444c-9255-9f322f4e7545) | | Idle, never printed | 1000 | PSS/PD 9.4/8.1 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/77c7a0bb-f929-439c-a0f7-ab4b7ff26516) | PSS/PD 6.3/2.2 KiB/t (0.66×/0.27× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/48ceb8f4-ab1e-41d2-8086-73bf9bda4fed) | PSS/PD 1,101.8/1,088.2 KiB/t (116.82×/134.61× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 1,082.2/1,078.2 KiB/t; [JSON](https://git.kayg.org/attachments/6ff673b3-28f8-4adf-8b81-1f1081c9f099) | | Filled, 2,024 numbered 80-column lines | 1 | PSS/PD 3,633.0/2,248.0 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/17637446-f3f1-4f75-8981-7d09ba0dff6d) | PSS/PD 7,292.0/2,588.0 KiB/t (2.01×/1.15× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/0dfaa229-0d3f-4b0a-8135-4e9f34ef4087) | PSS/PD 25,243.0/10,948.0 KiB/t (6.95×/4.87× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 4,705.0/2,576.0 KiB/t; [JSON](https://git.kayg.org/attachments/643d6ea2-995a-4907-bca7-ad5c81b443e9) | | Filled, 2,024 numbered 80-column lines | 10 | PSS/PD 1,172.8/1,045.6 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/258a27f7-1bb5-4e11-9d75-79bb0ad8acb0) | PSS/PD 2,116.0/1,645.6 KiB/t (1.80×/1.57× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/d73a905c-18fd-4227-a4d9-6ff218f9df08) | PSS/PD 4,895.4/3,466.0 KiB/t (4.17×/3.31× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 2,987.0/2,582.0 KiB/t; [JSON](https://git.kayg.org/attachments/7e6ece77-0509-4950-8711-110aabe8bd91) | | Filled, 2,024 numbered 80-column lines | 100 | PSS/PD 945.5/933.2 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/71a0f3e3-d313-4184-aff0-3cfb7c055552) | PSS/PD 1,044.4/997.4 KiB/t (1.10×/1.07× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/594479d7-c0e2-4f01-998c-42061f35ff85) | PSS/PD 2,796.2/2,654.2 KiB/t (2.96×/2.84× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; shim-only 2,625.6/2,580.6 KiB/t; [JSON](https://git.kayg.org/attachments/e70061ae-5558-4cc8-9397-cc0365a9e4ae) | | Filled, 2,024 numbered 80-column lines | 1000 | PSS/PD 923.6/922.3 KiB/t (1.00×/1.00× tmux); CPU 0.00 s (0.00000/t; — tmux); sched slices 0.00/s; CS 0.00/s (0.0000/t/s; — tmux); echo —; [JSON](https://git.kayg.org/attachments/daade31c-894e-4ae7-9935-8c05f48ac9ee) | INCOMPARABLE: retained 818/2,024 lines; observed 921.72/917.02 KiB/t at lower retention. [JSON](https://git.kayg.org/attachments/5adceed8-9774-4c74-a3a8-effa9bec84a9) | INVALID: shim-only 0/0 KiB/t in post-fill census despite 1,000 generator ACKs and 2,024 ordered lines; observed post-sample total 13.08/10.21 KiB/t is not a memory win. [JSON](https://git.kayg.org/attachments/d5cb85d5-e60d-43b8-903e-bc3a9c2a0433) | | Light, 1 line/s for 60 s | 1 | PSS/PD 2,350.0/1,420.0 KiB/t (1.00×/1.00× tmux); CPU 0.05 s (0.05000/t; 1.00× tmux); sched slices 6.23/s; CS 6.23/s (6.2333/t/s; 1.00× tmux); echo 0.411/1.631 ms; [JSON](https://git.kayg.org/attachments/0de61093-1095-4266-a441-75d2fd576e8c) | PSS/PD 7,844.0/3,140.0 KiB/t (3.34×/2.21× tmux); CPU 0.02 s (0.02000/t; 0.40× tmux); sched slices 4.33/s; CS 4.33/s (4.3333/t/s; 0.70× tmux); echo 0.385/4.546 ms (0.94× / 2.79× tmux); [JSON](https://git.kayg.org/attachments/e0cbbe83-96d2-46b2-bed6-381b0640ca06) | PSS/PD 27,519.0/13,224.0 KiB/t (11.71×/9.31× tmux); CPU 0.18 s (0.18000/t; 3.60× tmux); sched slices 123.58/s; CS 123.58/s (123.5820/t/s; 19.83× tmux); echo 1.408/2.101 ms (3.42× / 1.29× tmux); shim-only 3,217.0/1,088.0 KiB/t; [JSON](https://git.kayg.org/attachments/4877bcb4-5bba-4b5b-8447-80b05e20ce0c) | | Light, 1 line/s for 60 s | 10 | PSS/PD 248.7/165.2 KiB/t (1.00×/1.00× tmux); CPU 0.06 s (0.00600/t; 1.00× tmux); sched slices 6.92/s; CS 6.92/s (0.6917/t/s; 1.00× tmux); echo 0.369/1.279 ms; [JSON](https://git.kayg.org/attachments/fd9e5c99-60df-49a7-a316-8e994e69b13f) | PSS/PD 701.2/230.8 KiB/t (2.82×/1.40× tmux); CPU 0.01 s (0.00100/t; 0.17× tmux); sched slices 6.82/s; CS 6.82/s (0.6817/t/s; 0.99× tmux); echo 0.196/0.554 ms (0.53× / 0.43× tmux); [JSON](https://git.kayg.org/attachments/bb9ac22e-b80b-44d9-84e8-93b9cd8955c3) | PSS/PD 3,439.4/2,010.0 KiB/t (13.83×/12.17× tmux); CPU 0.20 s (0.02000/t; 3.33× tmux); sched slices 122.53/s; CS 122.53/s (12.2532/t/s; 17.72× tmux); echo 0.932/8.406 ms (2.53× / 6.57× tmux); shim-only 1,494.2/1,089.2 KiB/t; [JSON](https://git.kayg.org/attachments/6dcde1f8-d6d1-47ae-8ffe-4d5ed6c88c51) | | Light, 1 line/s for 60 s | 100 | PSS/PD 61.6/53.7 KiB/t (1.00×/1.00× tmux); CPU 0.20 s (0.00200/t; 1.00× tmux); sched slices 12.65/s; CS 12.65/s (0.1265/t/s; 1.00× tmux); echo 0.388/2.993 ms; [JSON](https://git.kayg.org/attachments/3bd8ee09-f0b1-4612-97da-0af453957c72) | PSS/PD 172.4/125.4 KiB/t (2.80×/2.33× tmux); CPU 0.10 s (0.00100/t; 0.50× tmux); sched slices 22.33/s; CS 22.33/s (0.2233/t/s; 1.77× tmux); echo 0.243/3.636 ms (0.63× / 1.21× tmux); [JSON](https://git.kayg.org/attachments/4edf0f9e-7ee5-48e3-86c3-ba0b344abe7e) | PSS/PD 1,365.8/1,223.8 KiB/t (22.17×/22.78× tmux); CPU 0.25 s (0.00250/t; 1.25× tmux); sched slices 247.25/s; CS 247.25/s (2.4725/t/s; 19.55× tmux); echo 0.954/26.354 ms (2.46× / 8.80× tmux); shim-only 1,134.2/1,089.2 KiB/t; [JSON](https://git.kayg.org/attachments/389856a5-dab0-43b4-a7a2-3d3e4cf4bd73) | | Light, 1 line/s for 60 s | 1000 | PSS/PD 42.5/41.7 KiB/t (1.00×/1.00× tmux); CPU 4.06 s (0.00406/t; 1.00× tmux); sched slices 41.52/s; CS 41.52/s (0.0415/t/s; 1.00× tmux); echo 2.756/54.406 ms; [JSON](https://git.kayg.org/attachments/a4565028-78e0-4cfe-93a3-a1f4dabcbc4a) | PSS/PD 119.2/114.5 KiB/t (2.80×/2.74× tmux); CPU 1.82 s (0.00182/t; 0.45× tmux); sched slices 51.38/s; CS 51.38/s (0.0514/t/s; 1.24× tmux); echo 0.252/33.097 ms (0.09× / 0.61× tmux); [JSON](https://git.kayg.org/attachments/245f6a39-cc01-4767-8788-80b6eb4ce8be) | INVALID: shim-only 0/0 KiB/t at interval end; post-sample total 17.54/7.90 KiB/t; CPU 0.20 s is incomplete; echo 1.452/34.670 ms. [JSON](https://git.kayg.org/attachments/95676180-f00f-43ea-a169-fabff5a54899) | | Flood, N=1 rounds to zero flooded terminals (idle echo control) | 1 | PSS/PD 2,274.0/1,400.0 KiB/t (1.00×/1.00× tmux); CPU 0.02 s (0.02000/t; 1.00× tmux); sched slices 7.17/s; CS 7.17/s (7.1665/t/s; 1.00× tmux); echo 0.370/0.623 ms; 0 flooded terminals; [JSON](https://git.kayg.org/attachments/2d34324f-190d-41f4-a7bd-d1ba66869c9b) | PSS/PD 5,108.0/1,044.0 KiB/t (2.25×/0.75× tmux); CPU 0.02 s (0.02000/t; 1.00× tmux); sched slices 6.13/s; CS 6.13/s (6.1332/t/s; 0.86× tmux); echo 0.373/2.190 ms (1.01× / 3.51× tmux); 0 flooded terminals; [JSON](https://git.kayg.org/attachments/f54a87c2-c8c3-4742-883d-66ba4a658657) | PSS/PD 23,799.0/9,504.0 KiB/t (10.47×/6.79× tmux); CPU 0.23 s (0.23000/t; 11.50× tmux); sched slices 240.06/s; CS 240.06/s (240.0608/t/s; 33.50× tmux); echo 1.709/14.784 ms (4.62× / 23.71× tmux); shim-only 3,149.0/1,084.0 KiB/t; 0 flooded terminals; [JSON](https://git.kayg.org/attachments/e11a8e86-beaf-4d6d-ae06-22843628233e) | | Flood, 10% `yes` for 30 s | 10 | PSS/PD 582.5/501.2 KiB/t (1.00×/1.00× tmux); CPU 29.90 s (2.99000/t; 1.00× tmux); sched slices 8.83/s; CS 8.83/s (0.8833/t/s; 1.00× tmux); echo 1.099/1.948 ms; [JSON](https://git.kayg.org/attachments/9ef5df8c-3ab6-4ddf-a27c-94b099a9461b) | PSS/PD 2,140.4/1,670.0 KiB/t (3.67×/3.33× tmux); CPU 29.31 s (2.93100/t; 0.98× tmux); sched slices 533.09/s; CS 533.06/s (53.3059/t/s; 60.35× tmux); echo 0.279/0.633 ms (0.25× / 0.33× tmux); [JSON](https://git.kayg.org/attachments/3414e553-0f81-4e7d-9392-fbd1e59e1aa3) | PSS/PD 5,917.6/4,489.6 KiB/t (10.16×/8.96× tmux); CPU 22.75 s (2.27500/t; 0.76× tmux); sched slices 10,300.71/s; CS 10,300.64/s (1,030.0643/t/s; 1166.13× tmux); echo 1.129/2.192 ms (1.03× / 1.13× tmux); shim-only 4,038.8/3,634.4 KiB/t; [JSON](https://git.kayg.org/attachments/1585f589-5add-47d0-ab99-e7359bbed9a2) | | Flood, 10% `yes` for 30 s | 100 | PSS/PD 387.1/379.5 KiB/t (1.00×/1.00× tmux); CPU 29.99 s (0.29990/t; 1.00× tmux); sched slices 13.47/s; CS 13.47/s (0.1347/t/s; 1.00× tmux); echo 8.826/14.745 ms; [JSON](https://git.kayg.org/attachments/ac1be114-ac67-46a1-b73c-58d0a2072d1b) | PSS/PD 244.6/197.6 KiB/t (0.63×/0.52× tmux); CPU 29.93 s (0.29930/t; 1.00× tmux); sched slices 84.17/s; CS 84.17/s (0.8417/t/s; 6.25× tmux); echo 1.134/1.832 ms (0.13× / 0.12× tmux); [JSON](https://git.kayg.org/attachments/0b36923a-3a16-4f68-87f1-8a2b927d403c) | PSS/PD 4,261.6/4,119.1 KiB/t (11.01×/10.85× tmux); CPU 91.57 s (0.91570/t; 3.05× tmux); sched slices 101,492.50/s; CS 101,492.56/s (1,014.9256/t/s; 7536.68× tmux); echo 0.959/26.238 ms (0.11× / 1.78× tmux); shim-only 3,462.0/3,416.4 KiB/t; [JSON](https://git.kayg.org/attachments/3fdd7abe-8276-43e3-bb08-1f0972ee8bee) | | Flood, 10% `yes` for 30 s | 1000 | PSS/PD 444.1/443.4 KiB/t (1.00×/1.00× tmux); CPU 29.99 s (0.02999/t; 1.00× tmux); sched slices 7.47/s; CS 7.47/s (0.0075/t/s; 1.00× tmux); echo 197.575/285.770 ms; [JSON](https://git.kayg.org/attachments/427cec54-d51e-48a5-b894-d3dc264efd21) | PSS/PD 102.4/97.7 KiB/t (0.23×/0.22× tmux); CPU 29.41 s (0.02941/t; 0.98× tmux); sched slices 88.66/s; CS 88.66/s (0.0887/t/s; 11.87× tmux); echo 10.761/16.145 ms (0.05× / 0.06× tmux); [JSON](https://git.kayg.org/attachments/9b082706-ac7b-4087-8d78-8959d54a58d7) | INVALID: shims exited during flood; pre-interval total 2,345.39/2,331.69 KiB/t, shim-only 2,325.48/2,321.38 KiB/t; end total 11.85/9.29 KiB/t; CPU 0.26 s covers only 2 common processes; echo 9.811/82.565 ms. [JSON](https://git.kayg.org/attachments/8718481f-dbfa-4eeb-8f6d-2587f48bcf20) | Measured losses and limits: tmux wins the one-terminal startup row and the 10,000-line history increment against this Linux process-per-user prototype (9.28 MiB vs tmux 4.97 MiB, 1.82×). The published Mac reference’s “new” row wins that filled-memory ratio (0.081×); our Linux row does not reproduce that result. The prototype uses the same Ghostty VT page storage as the production shim; the terminal module documents cell capacity and sparse style/grapheme storage, which is the main measured-history cost. Production also pays one static process image per terminal: at N=1,000 empty the shim alone is 1,082.16/1,078.16 KiB PSS/private dirty. The N=1→10 total increment is 1,337/1,336.89 KiB, 925.6×/376.0× tmux’s added-terminal PSS/private-dirty increment. The process-per-user flood memory win at N=1,000 is retention-limited: its host caps aggregate ring and history at 64 MiB each, while tmux retained under its 10,000-line setting. The N=1,000 process-per-user 2,024-line row retained only 818 lines and is marked incomparable. The origin/dev 1,000-session filled/light/flood rows lost all shims from the post-workload process census; their low post-sample memory/CPU is not counted as a win. N=1 flood has zero whole terminals at 10% after integer rounding and is only an idle echo control.
kayg commented 2026-10-14 17:52:17 +00:00
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D270 r4 independent PSS finding, three locked perf-VM repeats of the retained r3 static accounting image (digest in receipt), 4 vCPU/Linux 6.12.111. Hello-only census; no input/resize/snapshot, native ordinary/page ownership stays zero. Host PSS KiB at 1/10/100/1000: 5044–5048 / 5056–5060 / 5204–5212 / 6376–6396. Incremental (1000−1)/999: 1.3333–1.3534 KiB/session, all anonymous, versus prior requested allocation ledger 1.1205 KiB/session. The ownership-only figure is NOT shipping PSS; ~0.21–0.23 KiB/session remains allocator/layout overhead to reconcile. All idle two-second windows record zero CPU ticks. Image mapping is fixed 4916 KiB PSS including 904 KiB relocated anonymous data; shells and kernel excluded. Startup load ranges in receipt include fixture shell startup. First global kernel probe confirms ~24 KiB vmalloc/pair, but slab deltas are noisy and output flip work was unfenced; rerunning kernel-only with readiness fence and private-cgroup counters before a total-cost claim. Current exact-head rebuild and scheduler/syscall diagnostic are pending; no default switch.

idle-base.log

D270 r4 independent PSS finding, three locked perf-VM repeats of the retained r3 static accounting image (digest in receipt), 4 vCPU/Linux 6.12.111. Hello-only census; no input/resize/snapshot, native ordinary/page ownership stays zero. Host PSS KiB at 1/10/100/1000: 5044–5048 / 5056–5060 / 5204–5212 / 6376–6396. Incremental (1000−1)/999: 1.3333–1.3534 KiB/session, all anonymous, versus prior requested allocation ledger 1.1205 KiB/session. The ownership-only figure is NOT shipping PSS; ~0.21–0.23 KiB/session remains allocator/layout overhead to reconcile. All idle two-second windows record zero CPU ticks. Image mapping is fixed 4916 KiB PSS including 904 KiB relocated anonymous data; shells and kernel excluded. Startup load ranges in receipt include fixture shell startup. First global kernel probe confirms ~24 KiB vmalloc/pair, but slab deltas are noisy and output flip work was unfenced; rerunning kernel-only with readiness fence and private-cgroup counters before a total-cost claim. Current exact-head rebuild and scheduler/syscall diagnostic are pending; no default switch. [idle-base.log](https://git.kayg.org/attachments/ffc8d7fa-639c-472f-b91e-6cc4687fa982)
kayg commented 2026-10-14 18:11:58 +00:00
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Step pushed e9e04532: independent shipping-host PSS/kernel benchmark; existing driver functional suite 23/23 passes. Fenced kernel-only probe (3×2000 raw PTY pairs, no shells, perf lock/private scope): VmallocUsed +24.0 KiB/pair in every repeat; global slab +2.438–3.002 KiB/pair, including epoll and first output, so observed kernel increment ~26.44–27.00 KiB/pair (global counters retain noise; private-cgroup counters are also attached). This is separate from host PSS and shell memory.

Scheduler/syscall diagnostic on retained r3 image, 1000 sessions/180 seconds, not an admission timing run: runnable descheduling p99 3.549 ms, max 28.679 ms; 299590 wait4 calls; 461294 userspace gaps p99 0.041 ms, max 15.817 ms. All syscall arguments are discarded; private instance reports zero overruns and is removed. The first trace printer decoder missed syscall records; only the corrected trace-base2 syscall totals are valid. Expanding the syscall set to remove untraced-kernel ambiguity before attributing the longest gaps.

Two requested-allocation regressions now fail on the old implementation: untouched legacy writer allocates 180 bytes (target 0); one session readiness owns 336 bytes (target <=240). Inline cursor and single-generation-index repairs pass the focused tests; touched-crate clippy/full tests are running before their separate commits. No measured after-change PSS or latency claim yet.

kernel.log
trace-base2.log
writer-red-verified.log
registry-red.log

Step pushed e9e04532: independent shipping-host PSS/kernel benchmark; existing driver functional suite 23/23 passes. Fenced kernel-only probe (3×2000 raw PTY pairs, no shells, perf lock/private scope): VmallocUsed +24.0 KiB/pair in every repeat; global slab +2.438–3.002 KiB/pair, including epoll and first output, so observed kernel increment ~26.44–27.00 KiB/pair (global counters retain noise; private-cgroup counters are also attached). This is separate from host PSS and shell memory. Scheduler/syscall diagnostic on retained r3 image, 1000 sessions/180 seconds, not an admission timing run: runnable descheduling p99 3.549 ms, max 28.679 ms; 299590 wait4 calls; 461294 userspace gaps p99 0.041 ms, max 15.817 ms. All syscall arguments are discarded; private instance reports zero overruns and is removed. The first trace printer decoder missed syscall records; only the corrected trace-base2 syscall totals are valid. Expanding the syscall set to remove untraced-kernel ambiguity before attributing the longest gaps. Two requested-allocation regressions now fail on the old implementation: untouched legacy writer allocates 180 bytes (target 0); one session readiness owns 336 bytes (target <=240). Inline cursor and single-generation-index repairs pass the focused tests; touched-crate clippy/full tests are running before their separate commits. No measured after-change PSS or latency claim yet. [kernel.log](https://git.kayg.org/attachments/372ec557-2d10-4b3f-b83d-fb44c29a890c) [trace-base2.log](https://git.kayg.org/attachments/f1b46e85-1b98-4122-a043-47b82dddfd8b) [writer-red-verified.log](https://git.kayg.org/attachments/046c6f86-e387-426f-ad8d-e9c3cabf751a) [registry-red.log](https://git.kayg.org/attachments/3b510e3a-8ef5-4f13-8bbb-f3fefde48ba8)
kayg commented 2026-10-14 18:38:31 +00:00
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Scripts/verify fast is still running. Its server test batch finished with 417 passed, 6 failed, 46 ignored (1,311.78 s). Failures: auth::tests::socket_tests::fresh_delete::review_mesh_delete_requires_fresh_passkey_tap; auth::tests::socket_tests::review_input_credit::{browser_input_overload_retires_only_the_terminal_stream,review_full_input_writer_preserves_browser_control_progress}; runtime::remote_demo_tests::renewal_ack::failed_publication_retains_original_admission_without_interrupting_terminal; and remote_runtime::tests::standby::{primed_fallback_hedges_while_primary_native_send_buffer_is_full,detached_primed_writers_release_native_binding_budget}. The standby hedge failed its 2-second elapsed check; the detached writer saw ConnectionLost(ApplicationClosed(...)). The host had multiple concurrent verification/build jobs. Exact excerpt: verify-fast-test-failures.txt. Gate is continuing through cargo-deny and static builds; no product files were changed.

`Scripts/verify fast` is still running. Its server test batch finished with 417 passed, 6 failed, 46 ignored (1,311.78 s). Failures: `auth::tests::socket_tests::fresh_delete::review_mesh_delete_requires_fresh_passkey_tap`; `auth::tests::socket_tests::review_input_credit::{browser_input_overload_retires_only_the_terminal_stream,review_full_input_writer_preserves_browser_control_progress}`; `runtime::remote_demo_tests::renewal_ack::failed_publication_retains_original_admission_without_interrupting_terminal`; and `remote_runtime::tests::standby::{primed_fallback_hedges_while_primary_native_send_buffer_is_full,detached_primed_writers_release_native_binding_budget}`. The standby hedge failed its 2-second elapsed check; the detached writer saw `ConnectionLost(ApplicationClosed(...))`. The host had multiple concurrent verification/build jobs. Exact excerpt: [verify-fast-test-failures.txt](https://git.kayg.org/attachments/d053d982-0350-4378-89b4-2b1ecf5bb353). Gate is continuing through cargo-deny and static builds; no product files were changed.
kayg commented 2026-10-14 19:02:38 +00:00
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The same scripts/verify fast run also reports advisories FAILED, bans ok, licenses ok, sources ok. cargo-deny flags locked rustls 0.23.45 for RUSTSEC-2026-0346, -0347, -0348 and -0349; its report says upgrade to >=0.23.46. The lockfile is unchanged in this measurement-only worktree; I made no dependency or product-code changes. Exact cargo-deny output: verify-fast-cargo-deny.txt.

The same `scripts/verify fast` run also reports `advisories FAILED, bans ok, licenses ok, sources ok`. `cargo-deny` flags locked `rustls 0.23.45` for RUSTSEC-2026-0346, -0347, -0348 and -0349; its report says upgrade to >=0.23.46. The lockfile is unchanged in this measurement-only worktree; I made no dependency or product-code changes. Exact cargo-deny output: [verify-fast-cargo-deny.txt](https://git.kayg.org/attachments/6cfd2cdf-1a8a-42d0-872a-e87e398ff70d).
kayg commented 2026-10-14 19:27:34 +00:00
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D270 r4 item 1: independent idle slope is now measured, rather than equated with requested allocation bytes. Commits ab2540c9 (inline legacy cursor) and e7de21f7 (one generation-checked readiness index) are pushed; their exact staged slices passed fmt, feature all-target clippy and 109/110 shim unit tests respectively.

Three locked perf-VM repeats, 4 vCPU/Linux 6.12.111, no input/resize/snapshot; native allocation stays zero and all two-second idle windows have zero CPU ticks. Matched process-per-user-only static builds (other roles compiled out identically):

Sessions Before PSS KiB After PSS KiB
1 1396 1392–1396
10 1404 1400
100 1528–1532 1496–1500
1000 2744–2748 2400–2408
Incremental (1000−1)/999 1.349–1.353 KiB/session 1.009–1.017 KiB/session

The earlier full-role baseline slope was 1.333–1.353 KiB/session, despite its much larger fixed image mapping (4916 KiB versus 1288 in the matched compile-out fixtures). This cross-check separates the per-session change from fixed image cost; final full-role head repeat remains required. Kernel PTYs (~24 KiB vmalloc plus slab) and shells are additional.

Updated requested-byte ledger at 1000: session slots 432000 B; constructor paths 123000 B; prefix+ring 102000 B; retired viewers 0; readiness registry 175184 B; total 832184 B (was 1147368). Field layout: config64/listener4/path24/PTY32/lazyVT64/ring48/input32/writers96/peers24/created8/deferred8/exit8/drained1/deadline16/padding3 B. cfg(test) adds an 8-B lazy-state layout difference; shipping slots remain separate from PSS. The ownership ledger excludes reactor queue capacity, allocator metadata/resident slack and fixed process pages; those are not terminal state. Resident savings at 1000 are 336–348 KiB, versus 315184 B fewer requested allocations. No claim that 0.813 KiB requested bytes equals the measured 1.01 KiB resident slope.

Current input-path changes have red/green regressions for immediate state/output delivery, replay continuation after inline writes, and duplicate peer retirement; full feature integration checks are running. The optional compact codec measured 588/584 KiB repeated/decimal history increments, improving 740/2576 KiB but still failing 407 KiB; native ordinary metadata is 209312 B in both corpora. Testing another bounded compression pass; no default switch or deploy.
idle-base-min.log
idle-head-min.log
ledger-head.log
history-memory.log

D270 r4 item 1: independent idle slope is now measured, rather than equated with requested allocation bytes. Commits ab2540c9 (inline legacy cursor) and e7de21f7 (one generation-checked readiness index) are pushed; their exact staged slices passed fmt, feature all-target clippy and 109/110 shim unit tests respectively. Three locked perf-VM repeats, 4 vCPU/Linux 6.12.111, no input/resize/snapshot; native allocation stays zero and all two-second idle windows have zero CPU ticks. Matched process-per-user-only static builds (other roles compiled out identically): | Sessions | Before PSS KiB | After PSS KiB | |---:|---:|---:| | 1 |1396|1392–1396| | 10 |1404|1400| | 100 |1528–1532|1496–1500| | 1000 |2744–2748|2400–2408| | Incremental (1000−1)/999 |1.349–1.353 KiB/session|1.009–1.017 KiB/session| The earlier full-role baseline slope was 1.333–1.353 KiB/session, despite its much larger fixed image mapping (4916 KiB versus 1288 in the matched compile-out fixtures). This cross-check separates the per-session change from fixed image cost; final full-role head repeat remains required. Kernel PTYs (~24 KiB vmalloc plus slab) and shells are additional. Updated requested-byte ledger at 1000: session slots 432000 B; constructor paths 123000 B; prefix+ring 102000 B; retired viewers 0; readiness registry 175184 B; total 832184 B (was 1147368). Field layout: config64/listener4/path24/PTY32/lazyVT64/ring48/input32/writers96/peers24/created8/deferred8/exit8/drained1/deadline16/padding3 B. cfg(test) adds an 8-B lazy-state layout difference; shipping slots remain separate from PSS. The ownership ledger excludes reactor queue capacity, allocator metadata/resident slack and fixed process pages; those are not terminal state. Resident savings at 1000 are 336–348 KiB, versus 315184 B fewer requested allocations. No claim that 0.813 KiB requested bytes equals the measured 1.01 KiB resident slope. Current input-path changes have red/green regressions for immediate state/output delivery, replay continuation after inline writes, and duplicate peer retirement; full feature integration checks are running. The optional compact codec measured 588/584 KiB repeated/decimal history increments, improving 740/2576 KiB but still failing 407 KiB; native ordinary metadata is 209312 B in both corpora. Testing another bounded compression pass; no default switch or deploy. [idle-base-min.log](https://git.kayg.org/attachments/b87f25cc-a06b-4da2-b43d-f5db93f7e416) [idle-head-min.log](https://git.kayg.org/attachments/9aa62850-e127-4dd1-8c75-261170c2c577) [ledger-head.log](https://git.kayg.org/attachments/60a7a9fd-a854-4fd9-96d3-22c16b914792) [history-memory.log](https://git.kayg.org/attachments/cf4849c0-1386-435f-b791-aef889815bc7)
kayg commented 2026-10-14 19:31:44 +00:00
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Finished measurement on branch bench-vs-tmux, head 12f657f7882077d54123272456541764d49a77b2. No repository files changed. The comparison table and raw chart/scale CSV/JSON rows are in the earlier #205 comment.

verify fast full log: verify-fast.log.

Gate findings:

Final gate output verbatim:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | FAIL (101)   |
| cargo-deny                | FAIL (1)     |
| static builds             | FAIL (1)     |
+---------------------------+--------------+
Finished measurement on branch `bench-vs-tmux`, head `12f657f7882077d54123272456541764d49a77b2`. No repository files changed. The comparison table and raw chart/scale CSV/JSON rows are in the earlier #205 comment. `verify fast` full log: [verify-fast.log](https://git.kayg.org/attachments/1c9c697c-8789-44e6-8072-8fa107bbd405). Gate findings: - Server tests: 417 passed, 6 failed, 46 ignored. The six outputs are [fresh passkey rerun](https://git.kayg.org/attachments/ba07dd49-253d-459f-815f-7c5c2620a1b6), [browser overload rerun](https://git.kayg.org/attachments/15d8337a-afb6-485b-8e2e-ee46d37a8cd1), [full input writer rerun](https://git.kayg.org/attachments/1d4427b9-8b76-4d6f-8749-6f940849c216), [renewal publication rerun](https://git.kayg.org/attachments/c1b81f7f-57b2-43bb-9629-bd7f6d53d16c), [detached standby writer rerun](https://git.kayg.org/attachments/bcf889ce-6c07-4f27-8080-fa69d94dbc32), and [standby hedge rerun](https://git.kayg.org/attachments/ed4b9156-61d8-40e2-891c-f0153cbede9e). Five passed individually; `review_mesh_delete_requires_fresh_passkey_tap` failed again with the same passkey freshness refusal. - `cargo-deny` rejects locked `rustls 0.23.45` for RUSTSEC-2026-0346 through -0349; report: [verify-fast-cargo-deny.txt](https://git.kayg.org/attachments/6cfd2cdf-1a8a-42d0-872a-e87e398ff70d). No dependency changes were made. - Static x86_64 binary: 22,275,888 bytes vs 22,204,304 cap (+71,584). Static aarch64: 19,704,712 bytes vs 19,638,744 cap (+65,968). Against merge base `b182529fcc38ed65c53ad323b55e444beaa4e2a7`, branch size delta is 0 bytes. Final gate output verbatim: ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | FAIL (101) | | cargo-deny | FAIL (1) | | static builds | FAIL (1) | +---------------------------+--------------+ ```
kayg commented 2026-10-14 19:45:51 +00:00
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D270 r4 input-path step pushed 7e9295cc. Writable state/output replies now flush immediately within a per-peer 32 KiB/four-write housekeeping budget. Partial frames retain order; logical replay remains registered even after an inline frame drains. Large completed repaint storage is released immediately. Decoder and write failures retire a peer once, preserving its sibling. Removed the intermediate readiness update before inline writes.

Validation: fmt, feature all-target clippy, 114 feature and 80 default library tests; detach 2/2 and public mouse 1/1. Initial reliability failures were missing scratch parent (fixture returned ENOENT); after recreating that test parent both real-host reliability tests pass 2/2. No latency success claim before the new artifact is measured.

Next bounded-bulk test failed on the old 4096-byte turn (expected16384) and now passes; its feature gates and measurement follow separately. Private numeric trace driver pushed67a8a17b; Python suite23/23. Expanded all-syscall trace first overflowed, so that receipt is not complete attribution. Rerunning with16MiB/CPU kernel buffers.
inline-write-red.log
inline-io-retry.log
inline-reliability.log
batch-red.log

D270 r4 input-path step pushed 7e9295cc. Writable state/output replies now flush immediately within a per-peer 32 KiB/four-write housekeeping budget. Partial frames retain order; logical replay remains registered even after an inline frame drains. Large completed repaint storage is released immediately. Decoder and write failures retire a peer once, preserving its sibling. Removed the intermediate readiness update before inline writes. Validation: fmt, feature all-target clippy, 114 feature and 80 default library tests; detach 2/2 and public mouse 1/1. Initial reliability failures were missing scratch parent (fixture returned ENOENT); after recreating that test parent both real-host reliability tests pass 2/2. No latency success claim before the new artifact is measured. Next bounded-bulk test failed on the old 4096-byte turn (expected16384) and now passes; its feature gates and measurement follow separately. Private numeric trace driver pushed67a8a17b; Python suite23/23. Expanded all-syscall trace first overflowed, so that receipt is not complete attribution. Rerunning with16MiB/CPU kernel buffers. [inline-write-red.log](https://git.kayg.org/attachments/8acba007-14c4-4230-bc21-6170e88750a5) [inline-io-retry.log](https://git.kayg.org/attachments/8e312fec-a3cf-427e-9db9-d6d9b373fea7) [inline-reliability.log](https://git.kayg.org/attachments/03cfb729-3ff8-4642-afb2-10fe50227b23) [batch-red.log](https://git.kayg.org/attachments/7fd33877-947f-4c6e-acd2-5f44bbdf00c0)
kayg commented 2026-10-14 20:16:36 +00:00
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D270 r4 steps pushed: 7e9295cc bounded immediate replies (114 feature/80 default library tests), 82abff38 bounded16KiB bulk batching (115 feature tests), 54a25097 exit-readiness child reconciliation (116 feature tests plus2/2 real-host reliability regressions). Each passed fmt and feature all-target clippy.

Locked perf VM,4 vCPU/Linux6.12.111; same5000-sample/1000-session/100 detached producer driver. Matched role-compile-out baseline90a image versus82ab batching image:

Metric Before After
Bulk throughput 25.35 MB/s 42.93 MB/s
Idle echo p99 1.104 ms 0.545 ms
Flood echo p99 1.614 ms 2.042 ms
Added p99 over idle 0.509 ms 1.497 ms

Both quiet-echo runs meet<=2ms over idle; throughput recovers above36.97MB/s. Load averages are in receipts (startup contributes); do not treat a single run as a latency win.

Untraced90-second mixed-load diagnostics,1000 sessions and unchanged active-shell probes: baseline median p99=10.931ms, peak21.004; batching7.064ms, peak10.300; exit-readiness build7.689ms, peak12.685. All1000 sessions confirm at completion. These are diagnostic, NOT the requested two-hour admission run;5ms remains unmet. Further readiness work has red/green tests: indexed membership36896→5000 requested bytes at1000; single ready-event and steady registration1→0 transient allocations. Generation wrap/cancellation and stale-fd tests retained; broad gate is queued for a host build slot (own cgroup confirms build-slot sleeping, no own heavy build running).

Compact row-delta candidate measured396KiB repeated-text and408KiB decimal-text increments for10000 numbered72-column lines; encoded89468/92206B, ordinary metadata209312B, mapped-resident increment86016B. Decimal still misses407KiB. Attribute deltas now pass8 native codec tests; final artifact/fidelity gates and remeasurement pending.
batch-fairness2.log
fair-base-min.log
batch-short-summary.log
child-poll-gate.log
history-delta-memory.log

D270 r4 steps pushed: 7e9295cc bounded immediate replies (114 feature/80 default library tests), 82abff38 bounded16KiB bulk batching (115 feature tests), 54a25097 exit-readiness child reconciliation (116 feature tests plus2/2 real-host reliability regressions). Each passed fmt and feature all-target clippy. Locked perf VM,4 vCPU/Linux6.12.111; same5000-sample/1000-session/100 detached producer driver. Matched role-compile-out baseline90a image versus82ab batching image: | Metric | Before | After | |---|---:|---:| | Bulk throughput |25.35 MB/s|42.93 MB/s| | Idle echo p99 |1.104 ms|0.545 ms| | Flood echo p99 |1.614 ms|2.042 ms| | Added p99 over idle |0.509 ms|1.497 ms| Both quiet-echo runs meet<=2ms over idle; throughput recovers above36.97MB/s. Load averages are in receipts (startup contributes); do not treat a single run as a latency win. Untraced90-second mixed-load diagnostics,1000 sessions and unchanged active-shell probes: baseline median p99=10.931ms, peak21.004; batching7.064ms, peak10.300; exit-readiness build7.689ms, peak12.685. All1000 sessions confirm at completion. These are diagnostic, NOT the requested two-hour admission run;5ms remains unmet. Further readiness work has red/green tests: indexed membership36896→5000 requested bytes at1000; single ready-event and steady registration1→0 transient allocations. Generation wrap/cancellation and stale-fd tests retained; broad gate is queued for a host build slot (own cgroup confirms build-slot sleeping, no own heavy build running). Compact row-delta candidate measured396KiB repeated-text and408KiB decimal-text increments for10000 numbered72-column lines; encoded89468/92206B, ordinary metadata209312B, mapped-resident increment86016B. Decimal still misses407KiB. Attribute deltas now pass8 native codec tests; final artifact/fidelity gates and remeasurement pending. [batch-fairness2.log](https://git.kayg.org/attachments/67a57a29-e22b-47e4-9fd3-7f4f3b387e99) [fair-base-min.log](https://git.kayg.org/attachments/559caac9-f583-4a43-994c-c124e42481b4) [batch-short-summary.log](https://git.kayg.org/attachments/86368f16-8a92-4162-9bfb-d96eb741b7b7) [child-poll-gate.log](https://git.kayg.org/attachments/3fa929d9-2b7b-48ec-8470-ae38bb2f560b) [history-delta-memory.log](https://git.kayg.org/attachments/8ea86d6a-460b-4154-9a5e-a2ce409ee9d8)
kayg commented 2026-10-14 20:37:24 +00:00
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Lifecycle finding after124 library tests pass: abrupt_shell_exit_and_ignored_hup_leave_sibling_accepting_input timed out waiting for Exited after30s. The integration fixture starts run_host inside a Rust test-harness worker; its other harness thread leaves SIGCHLD unblocked. SIGCHLD can be delivered there after PTY HUP precedes zombie publication, leaving the signalfd reactor asleep with the drained master omitted. Earlier passes depended on this race.

Proposed experimental API boundary (before implementation): require and validate single-threaded host startup before binding sockets or spawning PTYs, matching the standalone CLI process architecture. Run the real reliability fixture as a standalone feature-gated example executable, not inside the threaded test harness. This retains event-driven exit reconciliation with no periodic scan or extra per-session lifetime descriptor. Frozen wire frames and production defaults stay unchanged. Add refusal-before-side-effects coverage and rerun the existing failing reliability test before proceeding.
ready-history-gate.log

Lifecycle finding after124 library tests pass: abrupt_shell_exit_and_ignored_hup_leave_sibling_accepting_input timed out waiting for Exited after30s. The integration fixture starts run_host inside a Rust test-harness worker; its other harness thread leaves SIGCHLD unblocked. SIGCHLD can be delivered there after PTY HUP precedes zombie publication, leaving the signalfd reactor asleep with the drained master omitted. Earlier passes depended on this race. Proposed experimental API boundary (before implementation): require and validate single-threaded host startup before binding sockets or spawning PTYs, matching the standalone CLI process architecture. Run the real reliability fixture as a standalone feature-gated example executable, not inside the threaded test harness. This retains event-driven exit reconciliation with no periodic scan or extra per-session lifetime descriptor. Frozen wire frames and production defaults stay unchanged. Add refusal-before-side-effects coverage and rerun the existing failing reliability test before proceeding. [ready-history-gate.log](https://git.kayg.org/attachments/ebc595cd-3d79-4466-a0bf-7321344f9bfb)
kayg commented 2026-10-14 20:46:06 +00:00
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Lifecycle repair pushed c0bdd3f6. The experimental entry rejects threaded startup before umask/signal mask, sockets or PTYs change. Real reliability tests now build and launch a standalone main with the matching target/profile/features; another harness thread can no longer consume SIGCHLD. No per-session lifetime fd or idle polling timer was added.

Exact staged gate: fmt and feature all-target clippy pass. Library result:117 passed;0 failed;17 ignored. Both real-host reliability tests pass, including the previously failing abrupt-shell-exit/ignored-HUP case. The new refusal test confirms no session directory is created for a threaded caller. Pending memory/ready/codec slices were held outside the tree for this gate and restored after this atomic commit.
lifecycle-guard-gate.log

Lifecycle repair pushed c0bdd3f6. The experimental entry rejects threaded startup before umask/signal mask, sockets or PTYs change. Real reliability tests now build and launch a standalone main with the matching target/profile/features; another harness thread can no longer consume SIGCHLD. No per-session lifetime fd or idle polling timer was added. Exact staged gate: fmt and feature all-target clippy pass. Library result:117 passed;0 failed;17 ignored. Both real-host reliability tests pass, including the previously failing abrupt-shell-exit/ignored-HUP case. The new refusal test confirms no session directory is created for a threaded caller. Pending memory/ready/codec slices were held outside the tree for this gate and restored after this atomic commit. [lifecycle-guard-gate.log](https://git.kayg.org/attachments/1026bcdc-1a84-42c7-868f-f02db1bdaa4c)
kayg commented 2026-10-14 21:39:45 +00:00
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R4 completed steps (pushed): 66bb3322 keeps write-budget bookkeeping out of default builds; 820b9e25 replaces per-turn readiness allocations/hash membership with inline readiness and 5 bytes/session generation slots; 93017d0c releases the startup directory after binding the session socket.

Independent full-role host PSS on the perf VM, identical fresh runtime pathname, three repeats:

sessions 90a8e37a PSS KiB 93017d0c PSS KiB
1 4984 / 4984 / 4980 5004 / 5004 / 5008
10 5000 / 5004 / 4996 5016 / 5012 / 5016
100 5140 / 5136 / 5136 5120 / 5120 / 5120
1000 6328 / 6328 / 6332 5936 / 5936 / 5940
Endpoint slope: 1.345–1.353 -> 0.932933 KiB/session. Native VT allocations: zero at every idle scale. Idle CPU ticks: zero in every observation window. Machine 4 vCPU, kernel 6.12.111+deb13-amd64; load recorded per row. PTY kernel memory remains separate; this is host PSS, not total session cost. Paths are normalized because different path lengths cross allocator size classes.

Gate at 93017d0c: default 79 passed/13 ignored; process feature 125 passed/17 ignored plus 2 standalone reliability tests; compact feature 131 passed/19 ignored. fmt and all-target clippy passed in all three configurations. Exact output attached.

Remaining targets are not met yet: unchanged-driver 120 s mixed-soak diagnostic median echo p99 18.826 ms (peak 43.570), versus 5 ms target. Exact Cargo history binary measured 460/476 KiB for repeated/decimal bodies, versus 407 KiB target. External decimal profile attributes its 496 KiB increment to anonymous allocations 340, worker stack 28, image pages 128 KiB; this includes sampler code faulted after the empty fence. Smaller codec stack buffers are under test. No default change.

idle-normalized-before.log
idle-normalized-after.log
ready-history-gate2.log
history-profile-before.log

R4 completed steps (pushed): 66bb3322 keeps write-budget bookkeeping out of default builds; 820b9e25 replaces per-turn readiness allocations/hash membership with inline readiness and 5 bytes/session generation slots; 93017d0c releases the startup directory after binding the session socket. Independent full-role host PSS on the perf VM, identical fresh runtime pathname, three repeats: | sessions | 90a8e37a PSS KiB | 93017d0c PSS KiB | |---:|---|---| |1|4984 / 4984 / 4980|5004 / 5004 / 5008| |10|5000 / 5004 / 4996|5016 / 5012 / 5016| |100|5140 / 5136 / 5136|5120 / 5120 / 5120| |1000|6328 / 6328 / 6332|5936 / 5936 / 5940| Endpoint slope: 1.345–1.353 -> 0.932933 KiB/session. Native VT allocations: zero at every idle scale. Idle CPU ticks: zero in every observation window. Machine 4 vCPU, kernel 6.12.111+deb13-amd64; load recorded per row. PTY kernel memory remains separate; this is host PSS, not total session cost. Paths are normalized because different path lengths cross allocator size classes. Gate at 93017d0c: default 79 passed/13 ignored; process feature 125 passed/17 ignored plus 2 standalone reliability tests; compact feature 131 passed/19 ignored. fmt and all-target clippy passed in all three configurations. Exact output attached. Remaining targets are not met yet: unchanged-driver 120 s mixed-soak diagnostic median echo p99 18.826 ms (peak 43.570), versus 5 ms target. Exact Cargo history binary measured 460/476 KiB for repeated/decimal bodies, versus 407 KiB target. External decimal profile attributes its 496 KiB increment to anonymous allocations 340, worker stack 28, image pages 128 KiB; this includes sampler code faulted after the empty fence. Smaller codec stack buffers are under test. No default change. [idle-normalized-before.log](https://git.kayg.org/attachments/1327da87-553d-4efd-891a-74ba1e8f7b29) [idle-normalized-after.log](https://git.kayg.org/attachments/271adb7a-c561-4176-a234-d85159e1e24c) [ready-history-gate2.log](https://git.kayg.org/attachments/c102ae32-6258-4d58-bd76-208a65c4dee1) [history-profile-before.log](https://git.kayg.org/attachments/b3551499-63a7-4030-b515-b139a4b7dca6)
kayg commented 2026-10-14 22:36:40 +00:00
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R4 input cohort pushed f4892886 (following ordered-reply batching cb7121c8). All ready shells receive input before output/reply service. Closed identities are retired before listener admission; temporary writable interest is not published before flushing, preserving stale-fd safety without extra epoll changes per input.

unchanged 1000-session 120 s diagnostic, warmup30/interval10 before 93017d0c after f4892886
median sample echo p99, ms 18.826 8.552
peak sample echo p99, ms 43.570 17.883
responsive sessions 1000 1000
fd/thread growth 0 / 0 0 / 0
The 5 ms budget remains unmet. This short run is not two-hour admission and its +78,488 KiB PSS during 30 s warmup is not a settled growth measurement; the prescribed full run uses600 s warmup. Artifact2d9c0920995f124c5b7ef6d5544ff79d84faf06ca60cfa6b881e619a5ebe6a0b, matching minimal-role profile, perf VM4 vCPU/kernel6.12.111+deb13-amd64, initial load1.17/1.16/1.08 and per-row load in receipt.

The preceding cb7121c8 complete90 s numeric trace has zero overruns. Largest host userspace gap148.938 ms is in initial resize at0.073 s; after30 s the maximum is2.386 ms. Runnable descheduling p99/max2.182/8.381 ms; wakeup-to-running3.337/9.878 ms. Diagnostic echo median sample p9914.926/peak34.297 ms. This traced, interval1 run is not budget admission. No scheduler settings were changed.

Independent requested-byte ledger at1000 idle sessions: Session slots432,000 (test layout adds8/session), retained socket paths88,000, origin-prefix/ring102,000, closed-viewer storage0, readiness registry175,184: total797,184 bytes. Shipping layout is424 bytes/session; normalized socket paths86; prefix38; ring64; registry175.184/session at1000; readiness marks5/session. PSS remains higher because it includes allocator residency/startup scratch, not just live requested bytes. Kernel PTY cost is separate.

History measurement correction: warm only observation code/mincore before empty PSS, not history or the codec. Exact Cargo artifactcd55eec86af1fe92fab39560c130538d929cb9b5c4d06c856c1994553c6ea2e6 measures396 KiB repeated /408 KiB decimal; decimal still misses407 by1 KiB. External decimal classification: anonymous+340 KiB, image+64 KiB, worker stack+0; its already resident2 MiB stack is a transparent huge page, now explicitly recorded. A smaller8-byte cold-page envelope is being tested. The new50-terminal slope fixture failed on the seed row (9978 vs9977), now corrected; no slope is claimed from that failed run.

Verbatim relevant gate output at the cohort head:
All 8 tests passed.
test result: ok. 134 passed; 0 failed; 20 ignored; 0 measured; 0 filtered out; finished in 11.03s
test result: ok. 128 passed; 0 failed; 17 ignored; 0 measured; 0 filtered out; finished in 6.57s
test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.47s
fmt and all-target clippy passed; exact full log attached. Production defaults unchanged.

cohort-history-gate5.log

R4 input cohort pushed f4892886 (following ordered-reply batching cb7121c8). All ready shells receive input before output/reply service. Closed identities are retired before listener admission; temporary writable interest is not published before flushing, preserving stale-fd safety without extra epoll changes per input. | unchanged 1000-session 120 s diagnostic, warmup30/interval10 | before 93017d0c | after f4892886 | |---|---:|---:| |median sample echo p99, ms|18.826|8.552| |peak sample echo p99, ms|43.570|17.883| |responsive sessions|1000|1000| |fd/thread growth|0 / 0|0 / 0| The 5 ms budget remains unmet. This short run is not two-hour admission and its +78,488 KiB PSS during 30 s warmup is not a settled growth measurement; the prescribed full run uses600 s warmup. Artifact2d9c0920995f124c5b7ef6d5544ff79d84faf06ca60cfa6b881e619a5ebe6a0b, matching minimal-role profile, perf VM4 vCPU/kernel6.12.111+deb13-amd64, initial load1.17/1.16/1.08 and per-row load in receipt. The preceding cb7121c8 complete90 s numeric trace has zero overruns. Largest host userspace gap148.938 ms is in initial resize at0.073 s; after30 s the maximum is2.386 ms. Runnable descheduling p99/max2.182/8.381 ms; wakeup-to-running3.337/9.878 ms. Diagnostic echo median sample p9914.926/peak34.297 ms. This traced, interval1 run is not budget admission. No scheduler settings were changed. Independent requested-byte ledger at1000 idle sessions: Session slots432,000 (test layout adds8/session), retained socket paths88,000, origin-prefix/ring102,000, closed-viewer storage0, readiness registry175,184: total797,184 bytes. Shipping layout is424 bytes/session; normalized socket paths86; prefix38; ring64; registry175.184/session at1000; readiness marks5/session. PSS remains higher because it includes allocator residency/startup scratch, not just live requested bytes. Kernel PTY cost is separate. History measurement correction: warm only observation code/mincore before empty PSS, not history or the codec. Exact Cargo artifactcd55eec86af1fe92fab39560c130538d929cb9b5c4d06c856c1994553c6ea2e6 measures396 KiB repeated /408 KiB decimal; decimal still misses407 by1 KiB. External decimal classification: anonymous+340 KiB, image+64 KiB, worker stack+0; its already resident2 MiB stack is a transparent huge page, now explicitly recorded. A smaller8-byte cold-page envelope is being tested. The new50-terminal slope fixture failed on the seed row (9978 vs9977), now corrected; no slope is claimed from that failed run. Verbatim relevant gate output at the cohort head: All 8 tests passed. test result: ok. 134 passed; 0 failed; 20 ignored; 0 measured; 0 filtered out; finished in 11.03s test result: ok. 128 passed; 0 failed; 17 ignored; 0 measured; 0 filtered out; finished in 6.57s test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.47s fmt and all-target clippy passed; exact full log attached. Production defaults unchanged. [cohort-history-gate5.log](https://git.kayg.org/attachments/2c5e3981-a258-424c-a1d2-96a8fb3fe3da)
kayg commented 2026-10-14 22:44:16 +00:00
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Additional raw receipts for the preceding cohort/ownership/history finding (the .jsonl attachment was refused with HTTP422; the identical bytes are attached as .log).

cohort-samples.log
state-trace-summary.json
history-calibrated-perf.log
ledger-ready.log

Additional raw receipts for the preceding cohort/ownership/history finding (the .jsonl attachment was refused with HTTP422; the identical bytes are attached as .log). [cohort-samples.log](https://git.kayg.org/attachments/3aa54c94-4bd8-410e-ba1f-3a499e74976b) [state-trace-summary.json](https://git.kayg.org/attachments/41ddc13c-5bf6-49d6-9eec-a2ce39bb9fdb) [history-calibrated-perf.log](https://git.kayg.org/attachments/95892744-da7c-448b-87b7-5b48e3fd7d7f) [ledger-ready.log](https://git.kayg.org/attachments/4863ff88-1ba8-4641-9363-1d5bba7ed320)
kayg commented 2026-10-14 23:34:52 +00:00
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R4 history/scale steps pushed131889c7 (codec),317af03e (full decimal replay and residency tests),12379129 (external numeric observer),c6a5caae (sparse pool mappings without huge pages).

10,000 numbered72-column lines, perf VM earlier IHC1 new cold single-terminal PSS increment
repeated text 740 KiB 392 /392 /392 KiB
decimal text 2576 KiB 404 /404 /404 KiB
The observation code is warmed before empty PSS; history/codec remain cold. Encoded charged bytes88328/91066. Native ordinary209312, mapped resident172032 (empty86016), retained virtual reservation22151168 bytes. UTF-8 row deltas, run-length attributes and opaque metadata preserve every raw cell bit. The smaller length-checked envelope retains truncation/trailing/nesting refusal. Inline native tests8 pass, including bounded fuzzing; real-engine tests check all10,000 rows, Unicode/styles/links, text spans and reflow. No default switch or new dependency.

Scale exposed a separate sparse-mapping cost:50 filled terminals added19488 KiB for the last40 histories,487.2 KiB each. MADV_NOHUGEPAGE on only the native private sparse pools cuts this to13564 KiB/40 =339.1 KiB. At50: ordinary10465600, mapped resident8601600, encoded4553300 bytes; only the preexisting2 MiB worker stack remains huge. First fill still pays cold code/stack costs; the1→10 slope is3044 KiB/9 =338.2 KiB. This explains why the isolated cold row alone was insufficient.

Runtime performance after the mapping change:1000 sessions/100 detached flooders/5000 quiet probes retain40.640 MB/s; idle p991.228 ms, flooded2.448 ms, extra1.219 ms. Perf VM4 vCPU; load3.56/1.87/1.66. Separate compact-enabled trial measures33.213 MB/s and extra1.230 ms (load5.31/2.50/1.88); its throughput is below36.97 MB/s and is still being investigated. These two build profiles must not be conflated.

Final relevant gate rows for this mapping slice (verbatim full log attached):
test result: ok. 134 passed; 0 failed; 20 ignored; 0 measured; 0 filtered out; finished in 11.48s
Default/prototype clippy,79/128 library tests and both real-host reliability tests also pass. Full branch-head scripts/verify fast remains pending.

Latency diagnostics have not met5 ms: the unchanged120 s workload with VT updates deliberately skipped still measures7.530 ms median sample p99/13.445 peak. The temporary source patch is restored, never committed, and this image cannot supply VT snapshots. Pinning the real host to CPU3 and shells/harness to0–2 instead measures9.012/12.086 ms; no placement change is adopted. Classifying the original probes adds no workload/budget change: light-session median sample p999.898 ms, bulk7.328. A native wire observer is being built because overlapping driver CPU during native-disabled probe windows alone has p996.727 ms (echo10.181); overlapping intervals are not additive and are not subtracted from latency. The original two-hour run is queued under the perf lock.

history-envelope-perf.log
history-no-huge-perf.log
history-no-huge-gate2.log
no-huge-default-process-gate.log
fair-no-huge.log

R4 history/scale steps pushed131889c7 (codec),317af03e (full decimal replay and residency tests),12379129 (external numeric observer),c6a5caae (sparse pool mappings without huge pages). |10,000 numbered72-column lines, perf VM|earlier IHC1|new cold single-terminal PSS increment| |---|---:|---:| |repeated text|740 KiB|392 /392 /392 KiB| |decimal text|2576 KiB|404 /404 /404 KiB| The observation code is warmed before empty PSS; history/codec remain cold. Encoded charged bytes88328/91066. Native ordinary209312, mapped resident172032 (empty86016), retained virtual reservation22151168 bytes. UTF-8 row deltas, run-length attributes and opaque metadata preserve every raw cell bit. The smaller length-checked envelope retains truncation/trailing/nesting refusal. Inline native tests8 pass, including bounded fuzzing; real-engine tests check all10,000 rows, Unicode/styles/links, text spans and reflow. No default switch or new dependency. Scale exposed a separate sparse-mapping cost:50 filled terminals added19488 KiB for the last40 histories,487.2 KiB each. MADV_NOHUGEPAGE on only the native private sparse pools cuts this to13564 KiB/40 =339.1 KiB. At50: ordinary10465600, mapped resident8601600, encoded4553300 bytes; only the preexisting2 MiB worker stack remains huge. First fill still pays cold code/stack costs; the1→10 slope is3044 KiB/9 =338.2 KiB. This explains why the isolated cold row alone was insufficient. Runtime performance after the mapping change:1000 sessions/100 detached flooders/5000 quiet probes retain40.640 MB/s; idle p991.228 ms, flooded2.448 ms, extra1.219 ms. Perf VM4 vCPU; load3.56/1.87/1.66. Separate compact-enabled trial measures33.213 MB/s and extra1.230 ms (load5.31/2.50/1.88); its throughput is below36.97 MB/s and is still being investigated. These two build profiles must not be conflated. Final relevant gate rows for this mapping slice (verbatim full log attached): test result: ok. 134 passed; 0 failed; 20 ignored; 0 measured; 0 filtered out; finished in 11.48s Default/prototype clippy,79/128 library tests and both real-host reliability tests also pass. Full branch-head scripts/verify fast remains pending. Latency diagnostics have not met5 ms: the unchanged120 s workload with VT updates deliberately skipped still measures7.530 ms median sample p99/13.445 peak. The temporary source patch is restored, never committed, and this image cannot supply VT snapshots. Pinning the real host to CPU3 and shells/harness to0–2 instead measures9.012/12.086 ms; no placement change is adopted. Classifying the original probes adds no workload/budget change: light-session median sample p999.898 ms, bulk7.328. A native wire observer is being built because overlapping driver CPU during native-disabled probe windows alone has p996.727 ms (echo10.181); overlapping intervals are not additive and are not subtracted from latency. The original two-hour run is queued under the perf lock. [history-envelope-perf.log](https://git.kayg.org/attachments/b824b5d8-f71c-4e86-a3fe-0a5a8dacd8f7) [history-no-huge-perf.log](https://git.kayg.org/attachments/450764ac-f283-46c6-957d-2603c7aabdda) [history-no-huge-gate2.log](https://git.kayg.org/attachments/52d10695-e95d-4460-b5ca-e25f03d00cfb) [no-huge-default-process-gate.log](https://git.kayg.org/attachments/3ab44c09-8fe6-4a80-b88d-e8440384e85d) [fair-no-huge.log](https://git.kayg.org/attachments/74cea6bc-d5bf-4a29-a6e6-0699a56e531d)
kayg commented 2026-10-15 00:43:53 +00:00
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R4 soak finding at c6a5caae, artifact f67fad5b6d7592236074e4fe54603100affbe846b7eb5fc3e3f17ecb450750dc: interrupted after 4480 active seconds/448 samples to release the perf lock after discovering the new 30-minute fairness rule in orchestrator/rules.md. It is NOT two-hour admission evidence. Same perf VM, 1000 sessions, original interval10/warmup600 workload.

Settled-window PSS growth1472 KiB, slope1799.56 KiB/hour; first settled PSS74040, last75868 KiB. Median settled sample echo p998.996ms, peak53.497; fd/thread growth0/0. Both memory and5ms echo admission fail. Existing r3 two-hour176KiB growth is not reproduced by this partial r4 run. Investigating ownership rather than treating flat descriptors as proof.

The coordinator change under test keeps the same fixture cgroup frozen between<=29-minute holds, excludes only certified frozen time from the driver's active clock, records every freeze/thaw/wall-time boundary, and releases between segments. No new host process or default setting. The native diagnostic observer also has a red path-index test (inclusive session origin); fixed source is waiting for its build slot before any valid observer result can be claimed.

partial-soak-summary.json
partial-soak-samples.log

R4 soak finding at c6a5caae, artifact f67fad5b6d7592236074e4fe54603100affbe846b7eb5fc3e3f17ecb450750dc: interrupted after 4480 active seconds/448 samples to release the perf lock after discovering the new 30-minute fairness rule in orchestrator/rules.md. It is NOT two-hour admission evidence. Same perf VM, 1000 sessions, original interval10/warmup600 workload. Settled-window PSS growth1472 KiB, slope1799.56 KiB/hour; first settled PSS74040, last75868 KiB. Median settled sample echo p998.996ms, peak53.497; fd/thread growth0/0. Both memory and5ms echo admission fail. Existing r3 two-hour176KiB growth is not reproduced by this partial r4 run. Investigating ownership rather than treating flat descriptors as proof. The coordinator change under test keeps the same fixture cgroup frozen between<=29-minute holds, excludes only certified frozen time from the driver's active clock, records every freeze/thaw/wall-time boundary, and releases between segments. No new host process or default setting. The native diagnostic observer also has a red path-index test (inclusive session origin); fixed source is waiting for its build slot before any valid observer result can be claimed. [partial-soak-summary.json](https://git.kayg.org/attachments/99ef6577-c11e-42da-a673-b0353a86387c) [partial-soak-samples.log](https://git.kayg.org/attachments/1c9c33b2-47d6-4bf8-a96c-74a8ee2be3c3)
kayg commented 2026-10-15 01:07:18 +00:00
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R4 steps pushed: 4a669265 native diagnostic observer (2 tests and clippy pass); 4f71ce65 reuses bounded host-wide readiness/work buffers (128 library +2 real-host reliability tests pass); 54bd7aaf preserves one fixture between short perf-lock segments; a0907812 adds an invocation tag so a preexisting same-name scope cannot authorize freezing/killing another job (30 driver tests pass).

Native observer diagnostic, c6a5caae host/1000 sessions/120s/warmup30/interval10: median sample echo p9910.874ms, peak16.190. This has100 additional temporary viewers, not original-suite admission. It does not support blaming or subtracting Python driver CPU to meet5ms. The earlier invalid session-origin/helper-startup attempts produced no usable result.

The replacement 7200-active-second soak is now running on 4f71ce65, binary9af85a8fd4b1fd3ac15a47beebe073c2b3d76d6c039023f5e6b4df254a501cb7, staged driver/coordinator54bd7aaf, default ownership diagnostics off. It freezes the same scope between<=29-minute locks, retaining all shells/state; wall boundaries stay explicit. A separate kernel-clock child retained its PID across freezes and checked6 active seconds across348 wall seconds; coordinator final exit/cleanup is still pending its last lock reacquisition, so that end-to-end fixture is not yet a completed pass (the commit wording was premature).

Replay profiling found one temporary output-payload allocation per already-buffered reply. A new real-session allocation regression now fails1 versus0 before the fix and passes after borrowing the ring slices directly. Frozen-byte/wrapped-range tests and broad feature gates are pending; this slice is not committed or measured yet. Full iterate is waiting for a build slot. D128 whole-host upgrade remains unimplemented, not represented by the descriptor-only test.

native-fixed3-samples.log
turn-cache-gate.log
native-probe-green.log
segment-ownership-green.log

R4 steps pushed: 4a669265 native diagnostic observer (2 tests and clippy pass); 4f71ce65 reuses bounded host-wide readiness/work buffers (128 library +2 real-host reliability tests pass); 54bd7aaf preserves one fixture between short perf-lock segments; a0907812 adds an invocation tag so a preexisting same-name scope cannot authorize freezing/killing another job (30 driver tests pass). Native observer diagnostic, c6a5caae host/1000 sessions/120s/warmup30/interval10: median sample echo p9910.874ms, peak16.190. This has100 additional temporary viewers, not original-suite admission. It does not support blaming or subtracting Python driver CPU to meet5ms. The earlier invalid session-origin/helper-startup attempts produced no usable result. The replacement 7200-active-second soak is now running on 4f71ce65, binary9af85a8fd4b1fd3ac15a47beebe073c2b3d76d6c039023f5e6b4df254a501cb7, staged driver/coordinator54bd7aaf, default ownership diagnostics off. It freezes the same scope between<=29-minute locks, retaining all shells/state; wall boundaries stay explicit. A separate kernel-clock child retained its PID across freezes and checked6 active seconds across348 wall seconds; coordinator final exit/cleanup is still pending its last lock reacquisition, so that end-to-end fixture is not yet a completed pass (the commit wording was premature). Replay profiling found one temporary output-payload allocation per already-buffered reply. A new real-session allocation regression now fails1 versus0 before the fix and passes after borrowing the ring slices directly. Frozen-byte/wrapped-range tests and broad feature gates are pending; this slice is not committed or measured yet. Full iterate is waiting for a build slot. D128 whole-host upgrade remains unimplemented, not represented by the descriptor-only test. [native-fixed3-samples.log](https://git.kayg.org/attachments/81f001e6-c958-4f25-961f-74da9cbcc78c) [turn-cache-gate.log](https://git.kayg.org/attachments/c14fb448-ead3-4f44-b91b-b91891560af8) [native-probe-green.log](https://git.kayg.org/attachments/100b2d10-ce56-4b9c-b254-846d2ed55c01) [segment-ownership-green.log](https://git.kayg.org/attachments/9a9b70f8-6bd8-43c3-9914-07b294291a0b)
kayg commented 2026-10-15 01:45:26 +00:00
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R4 pushed db0e602e: shared Output encoding now borrows a bounded ring range across physical wrap directly into reusable wire storage. No temporary owned payload. The steady real-session regression fails1 allocation before and passes0 after; explicit frozen bytes, prefix-preserving refusal and physical-wrap offsets pass. Reject writev over live ring storage because stalled partial frames need stable ownership. Both opt-in feature clippy runs pass. Verbatim gate rows:

test result: ok. 131 passed; 0 failed; 17 ignored; 0 measured; 0 filtered out; finished in 7.47s
test result: ok. 137 passed; 0 failed; 20 ignored; 0 measured; 0 filtered out; finished in 9.45s
Both real-host reliability tests pass in each feature build. Normal artifact and compact artifact hashes are preserved with the staged binaries; actual perf comparisons are pending, not inferred from the allocation count.

Separate fixture fix ebe800c8: parallel fork can briefly retain a client FD after drop. Explicit shutdown fences the tested connection before stale-identity retirement. Preserve the failing broad run;128 library tests and feature clippy pass after the fix. No production disconnect behavior changed.

Kernel segmented-clock fixture is now fully complete: coordinator exit0; scope inactive and ControlGroup empty. Same child PID across pauses; all transitions attached. Its final coordinator accounting6.126active seconds includes a final pause before process teardown. 636f721c additionally keeps future frozen fixtures across one-hour lock timeouts and reports owner after45min;32 driver checks pass.

Current state for resumption: whole7200-active-second soak on 4f71ce65/driver54bd7aaf is frozen after1740.089 coordinator-active seconds, in /root/infraternal-bench/ppu-soak/r4seg (unit ppu-soak-r4seg-soak.scope), awaiting the next perf lock. Separate opt-in ownership diagnosis is running in /root/infraternal-bench/p4/ow0 on the same 4f71ce65 image; it requests ownership at warmup/end. Borrowed-replay images db0e602e are staged for numeric syscall-delivery tracing (dv0) and idle/fairness repeats (br-*). Full iterate is in workspace tests via the build-slot; final fast has not run. D128 exact whole-host import remains unimplemented and5ms echo remains unmet.

borrow-feature-gates.log
close-fence-gate.log
segment-kernel-final.log
segment-retry-green.log

R4 pushed db0e602e: shared Output encoding now borrows a bounded ring range across physical wrap directly into reusable wire storage. No temporary owned payload. The steady real-session regression fails1 allocation before and passes0 after; explicit frozen bytes, prefix-preserving refusal and physical-wrap offsets pass. Reject writev over live ring storage because stalled partial frames need stable ownership. Both opt-in feature clippy runs pass. Verbatim gate rows: test result: ok. 131 passed; 0 failed; 17 ignored; 0 measured; 0 filtered out; finished in 7.47s test result: ok. 137 passed; 0 failed; 20 ignored; 0 measured; 0 filtered out; finished in 9.45s Both real-host reliability tests pass in each feature build. Normal artifact and compact artifact hashes are preserved with the staged binaries; actual perf comparisons are pending, not inferred from the allocation count. Separate fixture fix ebe800c8: parallel fork can briefly retain a client FD after drop. Explicit shutdown fences the tested connection before stale-identity retirement. Preserve the failing broad run;128 library tests and feature clippy pass after the fix. No production disconnect behavior changed. Kernel segmented-clock fixture is now fully complete: coordinator exit0; scope inactive and ControlGroup empty. Same child PID across pauses; all transitions attached. Its final coordinator accounting6.126active seconds includes a final pause before process teardown. 636f721c additionally keeps future frozen fixtures across one-hour lock timeouts and reports owner after45min;32 driver checks pass. Current state for resumption: whole7200-active-second soak on 4f71ce65/driver54bd7aaf is frozen after1740.089 coordinator-active seconds, in /root/infraternal-bench/ppu-soak/r4seg (unit ppu-soak-r4seg-soak.scope), awaiting the next perf lock. Separate opt-in ownership diagnosis is running in /root/infraternal-bench/p4/ow0 on the same 4f71ce65 image; it requests ownership at warmup/end. Borrowed-replay images db0e602e are staged for numeric syscall-delivery tracing (dv0) and idle/fairness repeats (br-*). Full iterate is in workspace tests via the build-slot; final fast has not run. D128 exact whole-host import remains unimplemented and5ms echo remains unmet. [borrow-feature-gates.log](https://git.kayg.org/attachments/63df2550-9864-4a88-bad3-d68628d369cb) [close-fence-gate.log](https://git.kayg.org/attachments/042e8c51-4551-432e-b3e1-e72f42e52572) [segment-kernel-final.log](https://git.kayg.org/attachments/a421378a-cddc-4d87-bd9b-d5a075e82ff3) [segment-retry-green.log](https://git.kayg.org/attachments/eb22dfe8-36a0-4b59-901a-24ae7815e209)
kayg commented 2026-10-15 02:17:05 +00:00
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Continuation r5 start: branch process-per-user, head a4612719d; task merge base b182529fcc. Read #205 history (215 comments; no parent recorded), repository contract and orchestrator build-slot/perf fairness rules. No default switch or deployment. Resume ownership, delivery tracing and compact artifact measurements before D128 whole-host work. Recorded r4seg scope is now inactive with empty ControlGroup; its last sample is 1720 active seconds and boundaries stop at first 1740-second freeze, so it cannot resume as a retained fixture. ow0 also stops at 1720 seconds. Preserve partial receipts; launch a fresh segmented soak rather than combine different fixtures. Existing untracked Python cache left untouched.

Continuation r5 start: branch process-per-user, head a4612719d; task merge base b182529fcc38ed65c53ad323b55e444beaa4e2a7. Read #205 history (215 comments; no parent recorded), repository contract and orchestrator build-slot/perf fairness rules. No default switch or deployment. Resume ownership, delivery tracing and compact artifact measurements before D128 whole-host work. Recorded r4seg scope is now inactive with empty ControlGroup; its last sample is 1720 active seconds and boundaries stop at first 1740-second freeze, so it cannot resume as a retained fixture. ow0 also stops at 1720 seconds. Preserve partial receipts; launch a fresh segmented soak rather than combine different fixtures. Existing untracked Python cache left untouched.
kayg commented 2026-10-15 02:21:37 +00:00
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D270 experimental lazy-state change proposed before implementation: retain up to 32 ordered geometry events alongside the complete <=4096-byte origin prefix. Materialize at the original geometry and replay output/resizes in order when either bound is reached or a snapshot is requested. This avoids allocating native VT only because an otherwise quiet session resizes. No frame, authentication, production default or foundation changes. Regression compares against eager native state across reflow and a partial OSC; run it failing first. Prior ownership receipts show 57 quiet terminals each gain one 4096-byte mapped page between warmup and the manual fence while active-terminal native residency is flat.

D270 experimental lazy-state change proposed before implementation: retain up to 32 ordered geometry events alongside the complete <=4096-byte origin prefix. Materialize at the original geometry and replay output/resizes in order when either bound is reached or a snapshot is requested. This avoids allocating native VT only because an otherwise quiet session resizes. No frame, authentication, production default or foundation changes. Regression compares against eager native state across reflow and a partial OSC; run it failing first. Prior ownership receipts show 57 quiet terminals each gain one 4096-byte mapped page between warmup and the manual fence while active-terminal native residency is flat.
kayg commented 2026-10-15 02:27:10 +00:00
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Step pushed: 77ecd3026, bounded lazy geometry transcript (32 events plus <=4096 output bytes), with historical reflow/parser order retained. Red regression fails on the prior implementation; fmt and feature all-target clippy pass; 134 library tests and both real-host reliability tests pass. Minimal static prototype 2522656 bytes; prior borrowed-replay image 2521824 bytes (+832). These are prototype artifact bytes, not default-binary growth attribution. Independent PSS/latency results remain pending.

The old-image repeat had not acquired the lock or started a fixture, so its exact owned coordinator was retired before admission. Fresh 7200-active-second soak is queued as r5lazy on this exact lazy-geometry implementation, original workload/driver and <=1740-second locked segments. No different fixtures will be combined. Numeric delivery tracing and baseline preflight remain queued/running independently.

lazy-red.log
lazy-gate.log

Step pushed: 77ecd3026, bounded lazy geometry transcript (32 events plus <=4096 output bytes), with historical reflow/parser order retained. Red regression fails on the prior implementation; fmt and feature all-target clippy pass; 134 library tests and both real-host reliability tests pass. Minimal static prototype 2522656 bytes; prior borrowed-replay image 2521824 bytes (+832). These are prototype artifact bytes, not default-binary growth attribution. Independent PSS/latency results remain pending. The old-image repeat had not acquired the lock or started a fixture, so its exact owned coordinator was retired before admission. Fresh 7200-active-second soak is queued as r5lazy on this exact lazy-geometry implementation, original workload/driver and <=1740-second locked segments. No different fixtures will be combined. Numeric delivery tracing and baseline preflight remain queued/running independently. [lazy-red.log](https://git.kayg.org/attachments/a16c0b13-a7d4-400a-8783-356d77659254) [lazy-gate.log](https://git.kayg.org/attachments/c0c6941b-0a4c-482c-9b75-3fa3e3e2f447)
kayg commented 2026-10-15 02:35:31 +00:00
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Steps pushed: 65056bf93 promotes the numeric delivery observer and repairs bare-hexadecimal syscall fields/signed returns; 8c00177a4 adds 64 deterministic geometry/property cases; 97d6eae17 updates research boundaries. All 35 Python checks pass. Compact feature: 141 library tests pass, 20 explicit measurement/nightly ignores; its all-target clippy and fmt pass. Geometry property case also passes in the noncompact process feature.

Perf diagnostic r5dv on borrowed-replay image 456d3e39, 1000 sessions/120 s: zero trace overruns, 47406 sendto calls, but zero correlated writes. The old printer decoder interpreted bare hexadecimal socket descriptors incorrectly; this delivery result is invalid and cannot attribute reader delay. Corrected dv1 is queued. Scheduler-only diagnostic wakeup-to-running p99/max 3.442/10.492 ms, runnable descheduling 1.916/6.946 ms. Initial load 5.91/2.05/1.34; these traced values are not admission evidence or a no-regression claim. Full unchanged-workload 7200-active-second lazy-geometry run r5lazy and compact artifact cold/slope repeats remain queued under the shared lock.

delivery-trace-summary.json
delivery-red.log
driver-green.log
geometry-properties.log

Steps pushed: 65056bf93 promotes the numeric delivery observer and repairs bare-hexadecimal syscall fields/signed returns; 8c00177a4 adds 64 deterministic geometry/property cases; 97d6eae17 updates research boundaries. All 35 Python checks pass. Compact feature: 141 library tests pass, 20 explicit measurement/nightly ignores; its all-target clippy and fmt pass. Geometry property case also passes in the noncompact process feature. Perf diagnostic r5dv on borrowed-replay image 456d3e39, 1000 sessions/120 s: zero trace overruns, 47406 sendto calls, but zero correlated writes. The old printer decoder interpreted bare hexadecimal socket descriptors incorrectly; this delivery result is invalid and cannot attribute reader delay. Corrected dv1 is queued. Scheduler-only diagnostic wakeup-to-running p99/max 3.442/10.492 ms, runnable descheduling 1.916/6.946 ms. Initial load 5.91/2.05/1.34; these traced values are not admission evidence or a no-regression claim. Full unchanged-workload 7200-active-second lazy-geometry run r5lazy and compact artifact cold/slope repeats remain queued under the shared lock. [delivery-trace-summary.json](https://git.kayg.org/attachments/dc5f2147-7416-4cd1-962c-2b8b2962bda3) [delivery-red.log](https://git.kayg.org/attachments/a42df01f-e78b-4773-bc69-5b69c5721d2c) [driver-green.log](https://git.kayg.org/attachments/19870b2d-6e7d-4696-94e9-50a3bd5dd297) [geometry-properties.log](https://git.kayg.org/attachments/2ac4eeb4-ae79-4aa7-8145-7dbf13713b28)
kayg commented 2026-10-15 02:38:00 +00:00
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Measurement setup correction: r5-before exited 1 before any fixture ran; the scratch preflight used relative script paths while its coordinator started in /root. All three Python launches returned ENOENT, so this attempt has no valid PSS/fairness numbers. Corrected invocation changes to its staged /root/infraternal-bench/p4 working directory first; r5-before-fixed is queued with the same baseline images and probes. No product source or budget changed.

Measurement setup correction: r5-before exited 1 before any fixture ran; the scratch preflight used relative script paths while its coordinator started in /root. All three Python launches returned ENOENT, so this attempt has no valid PSS/fairness numbers. Corrected invocation changes to its staged /root/infraternal-bench/p4 working directory first; r5-before-fixed is queued with the same baseline images and probes. No product source or budget changed.
kayg commented 2026-10-15 02:49:51 +00:00
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Ongoing r5lazy 1000-session original-workload run (77ecd3026 implementation, no ownership diagnostics): at 640 active seconds host PSS 24256 KiB, anonymous 22372 KiB, descriptors 3005, threads 1. At 710 s PSS 24260 KiB; echo sample p99 8.823020 ms. Native echo budget remains unmet. This is an early segment after the 600-s warmup, not completed two-hour stability/admission. Perf VM lock owner is this job; first segment releases by 1740 coordinator-active seconds. Compact cold/slope, corrected delivery, baseline/after idle/fairness probes are queued.

Ongoing r5lazy 1000-session original-workload run (77ecd3026 implementation, no ownership diagnostics): at 640 active seconds host PSS 24256 KiB, anonymous 22372 KiB, descriptors 3005, threads 1. At 710 s PSS 24260 KiB; echo sample p99 8.823020 ms. Native echo budget remains unmet. This is an early segment after the 600-s warmup, not completed two-hour stability/admission. Perf VM lock owner is this job; first segment releases by 1740 coordinator-active seconds. Compact cold/slope, corrected delivery, baseline/after idle/fairness probes are queued.
kayg commented 2026-10-15 02:58:14 +00:00
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D270 next experiment proposed before implementation: avoid sending a standalone fresh InputAck immediately before an interactive shell reply. After an input cohort, allow at most the next writable-readiness visit for a subscribed data peer at the ring head, so Ack and newly available output can share one ordered batch. PTY writes still happen immediately; explicit InputState replies, pending requests and input-only links remain immediate. Writable interest must guarantee Ack delivery even when a program emits no output; no timer or idle scan. Existing 1000-session soak still exceeds 5 ms with the lazy geometry image; prior complete numeric trace counted 47406 sends versus 25140 PTY writes. First add byte-level ordering/readiness regressions, then compare the original mixed-load driver; no latency improvement claim yet.

D270 next experiment proposed before implementation: avoid sending a standalone fresh InputAck immediately before an interactive shell reply. After an input cohort, allow at most the next writable-readiness visit for a subscribed data peer at the ring head, so Ack and newly available output can share one ordered batch. PTY writes still happen immediately; explicit InputState replies, pending requests and input-only links remain immediate. Writable interest must guarantee Ack delivery even when a program emits no output; no timer or idle scan. Existing 1000-session soak still exceeds 5 ms with the lazy geometry image; prior complete numeric trace counted 47406 sends versus 25140 PTY writes. First add byte-level ordering/readiness regressions, then compare the original mixed-load driver; no latency improvement claim yet.
kayg commented 2026-10-15 03:04:40 +00:00
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Confirmed lazy-resize correctness finding: native resize clears synchronized-output mode even when dimensions are unchanged. The preexisting equal-size lazy shortcut and the new transcript could skip that side effect after intervening output. Existing grid/repaint comparisons omit this flag intentionally; a test-only query of the pinned native mode ABI exposes it. New regression fails at the synchronization-reset assertion (C eager control first verifies enabled then cleared). Fix records equal-size events whenever bytes intervened, and coalesces them only for an empty byte range. No forced native allocation is needed. Green focused regression and broader feature gates follow; retain current long soak as exact 77ecd3026 evidence, not a test of this later repair.

Confirmed lazy-resize correctness finding: native resize clears synchronized-output mode even when dimensions are unchanged. The preexisting equal-size lazy shortcut and the new transcript could skip that side effect after intervening output. Existing grid/repaint comparisons omit this flag intentionally; a test-only query of the pinned native mode ABI exposes it. New regression fails at the synchronization-reset assertion (C eager control first verifies enabled then cleared). Fix records equal-size events whenever bytes intervened, and coalesces them only for an empty byte range. No forced native allocation is needed. Green focused regression and broader feature gates follow; retain current long soak as exact 77ecd3026 evidence, not a test of this later repair.
kayg commented 2026-10-15 03:39:32 +00:00
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Measured r5 findings, locked perf VM 4 vCPU/Linux 6.12.111, production musl artifacts; no default change.

Compact artifact e7256fd5 (141 passing compact tests): cold 10000 x 72 retained-line PSS increments repeated text 340/324/324 KiB, decimal text 336/336/360 KiB, all below contextual 407 KiB reference. Native anonymous increment 324/336 KiB; variation is image +16 KiB in first repeated run and worker stack +24 KiB in last decimal run. Encoded ownership 88328/91066 B; ordinary native metadata 209312 B; mapped-resident increment 86016 B; reserved virtual bytes 22151168. At 50 filled terminals the last 40 add 13564 KiB, 339.1 KiB/history. The 17-MiB per-terminal history fixture excludes the raw wire ring and is not the divided 64-MiB host pool. Comparison remains cross-machine/contextual to the published reference.

Corrected 120-s numeric delivery trace: all 12000 probes correlated, zero overruns. After 30 s: echo p99 42.790 ms; conservative reader-delay lower-bound p99 40.586 ms, 6315/9000 probes have lower bound >5 ms. Host userspace gap p99/max 0.040/2.045 ms; wakeup-to-running p99/max 3.276/10.028 ms. This traced run itself adds reader contention; no time is subtracted from admission. A bare-PTY control using the same shell-marker routine is queued; it has a different reader and cannot replace the original suite.

5b76a2e5a and f1ca40d58 pushed: native equal-size resize side-effect repair and first-snapshot geometry receipt. Feature fmt/clippy, 136 library tests and both real-host reliability tests pass. The three earlier workspace server failures pass individually from their exact original test executable. A package-only rerun selected zero tests because its feature graph differed and is discarded. Full head gate remains required.

One preflight waiter reached 45 min at 03:24:51 UTC: owner file contained process-per-user ppu-soak-r5-before-fixed 2026-10-15T03:18:26.552164+00:00. It kept waiting and acquired at 03:26:31. The same original r5lazy fixture is frozen after 1740.046 coordinator-active seconds, releasing the machine between segments. No combined-fixture two-hour claim.

delivery-fixed-brief.json
history-perf.log
same-geometry-red.log
same-geometry-green.log
server-exact-reruns.log

Measured r5 findings, locked perf VM 4 vCPU/Linux 6.12.111, production musl artifacts; no default change. Compact artifact e7256fd5 (141 passing compact tests): cold 10000 x 72 retained-line PSS increments repeated text 340/324/324 KiB, decimal text 336/336/360 KiB, all below contextual 407 KiB reference. Native anonymous increment 324/336 KiB; variation is image +16 KiB in first repeated run and worker stack +24 KiB in last decimal run. Encoded ownership 88328/91066 B; ordinary native metadata 209312 B; mapped-resident increment 86016 B; reserved virtual bytes 22151168. At 50 filled terminals the last 40 add 13564 KiB, 339.1 KiB/history. The 17-MiB per-terminal history fixture excludes the raw wire ring and is not the divided 64-MiB host pool. Comparison remains cross-machine/contextual to the published reference. Corrected 120-s numeric delivery trace: all 12000 probes correlated, zero overruns. After 30 s: echo p99 42.790 ms; conservative reader-delay lower-bound p99 40.586 ms, 6315/9000 probes have lower bound >5 ms. Host userspace gap p99/max 0.040/2.045 ms; wakeup-to-running p99/max 3.276/10.028 ms. This traced run itself adds reader contention; no time is subtracted from admission. A bare-PTY control using the same shell-marker routine is queued; it has a different reader and cannot replace the original suite. 5b76a2e5a and f1ca40d58 pushed: native equal-size resize side-effect repair and first-snapshot geometry receipt. Feature fmt/clippy, 136 library tests and both real-host reliability tests pass. The three earlier workspace server failures pass individually from their exact original test executable. A package-only rerun selected zero tests because its feature graph differed and is discarded. Full head gate remains required. One preflight waiter reached 45 min at 03:24:51 UTC: owner file contained `process-per-user ppu-soak-r5-before-fixed 2026-10-15T03:18:26.552164+00:00`. It kept waiting and acquired at 03:26:31. The same original r5lazy fixture is frozen after 1740.046 coordinator-active seconds, releasing the machine between segments. No combined-fixture two-hour claim. [delivery-fixed-brief.json](https://git.kayg.org/attachments/b56b28f1-ec8e-42e8-8dac-163928c371a5) [history-perf.log](https://git.kayg.org/attachments/52b00758-5b5f-4feb-b2e0-c899d3de05b5) [same-geometry-red.log](https://git.kayg.org/attachments/257e9f44-0a6e-4e6a-aa04-038d2e767f2d) [same-geometry-green.log](https://git.kayg.org/attachments/c461eb7c-713d-4051-a94d-3b6cc35151ea) [server-exact-reruns.log](https://git.kayg.org/attachments/471c67ae-1c5a-4fe8-ae84-dacbc24f5636)
kayg commented 2026-10-15 03:42:36 +00:00
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Independent idle preflight completed on matched minimal-role images and identical runtime path, 3 repeats: borrowed replay baseline PSS KiB N=1/10/100/1000 is 1420-1424 /1428-1432 /1520-1524 /2432-2436; lazy geometry is 1420 /1432 /1524 /2464-2468. Native ownership remains zero; idle CPU ticks remain zero. The endpoint slope is about 1.01-1.02 -> 1.045-1.049 KiB/session; the 32-KiB delta at 1000 matches the new lazy record. This differs from the older 93017d0c slope because later retained reactor scratch is additional ownership, not native VT.

Next D270 reductions: compact descriptor registrations (the fd is already encoded in its generation key; session index is bounded by 1000), and indexed ready rows with two inline descriptors. The current work HashMap retains its startup high-water capacity and allocates overflow storage for ordinary PTY+peer readiness. Add failing layout/allocation regressions first, preserve fd-generation and wrap tests, then remeasure shipping PSS and balanced throughput/latency. No new dependency or wire/default change.

The single ordered preflight does not certify throughput neutrality: baseline normal/compact 48.64/39.79 MB/s versus lazy 36.87/34.32 MB/s; extra echo p99 1.263/1.436 versus 1.350/2.376 ms. These require balanced repeats; compact misses the +2 ms target in this run. Load averages are in raw rows. No adoption claim.

Independent idle preflight completed on matched minimal-role images and identical runtime path, 3 repeats: borrowed replay baseline PSS KiB N=1/10/100/1000 is 1420-1424 /1428-1432 /1520-1524 /2432-2436; lazy geometry is 1420 /1432 /1524 /2464-2468. Native ownership remains zero; idle CPU ticks remain zero. The endpoint slope is about 1.01-1.02 -> 1.045-1.049 KiB/session; the 32-KiB delta at 1000 matches the new lazy record. This differs from the older 93017d0c slope because later retained reactor scratch is additional ownership, not native VT. Next D270 reductions: compact descriptor registrations (the fd is already encoded in its generation key; session index is bounded by 1000), and indexed ready rows with two inline descriptors. The current work HashMap retains its startup high-water capacity and allocates overflow storage for ordinary PTY+peer readiness. Add failing layout/allocation regressions first, preserve fd-generation and wrap tests, then remeasure shipping PSS and balanced throughput/latency. No new dependency or wire/default change. The single ordered preflight does not certify throughput neutrality: baseline normal/compact 48.64/39.79 MB/s versus lazy 36.87/34.32 MB/s; extra echo p99 1.263/1.436 versus 1.350/2.376 ms. These require balanced repeats; compact misses the +2 ms target in this run. Load averages are in raw rows. No adoption claim.
kayg commented 2026-10-15 03:56:23 +00:00
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Further measured D270 work, same perf VM/lock: first snapshot after 32 deferred geometry events at 1000x100 spends 24.500–29.397 ms materializing, versus 0.629–0.832 ms at 80x24 and 2.589–2.828 ms at 160x60. Memory/event count alone does not bound deferred reflow CPU. Next cap the sum of deferred destination cells, preserving the historical transcript rather than dropping geometry. The native equal-size side-effect repair remains mandatory.

Readiness red tests confirm 24-B registrations and 1 transient allocation for ordinary PTY+viewer events. Indexed ready rows and compact registrations are awaiting their build slot; stale descriptor generations, repeated rounds and wrap are covered. No claim before green gates and shipping PSS/latency repeats.

The unchanged r5lazy fixture has reached 2790 active s: host PSS 24340 KiB, fd/thread 3005/1, latest batch echo p99 8.612 ms. It is still above 5 ms. A counter-process A/B is queued because the existing private wakeup counter drains in a Python thread sharing the echo reader's interpreter; workload and thresholds stay unchanged. It is diagnostic and does not retroactively alter the original segmented admission run.

registration-red.log
two-ready-red.log
geometry-before-perf.log

Further measured D270 work, same perf VM/lock: first snapshot after 32 deferred geometry events at 1000x100 spends 24.500–29.397 ms materializing, versus 0.629–0.832 ms at 80x24 and 2.589–2.828 ms at 160x60. Memory/event count alone does not bound deferred reflow CPU. Next cap the sum of deferred destination cells, preserving the historical transcript rather than dropping geometry. The native equal-size side-effect repair remains mandatory. Readiness red tests confirm 24-B registrations and 1 transient allocation for ordinary PTY+viewer events. Indexed ready rows and compact registrations are awaiting their build slot; stale descriptor generations, repeated rounds and wrap are covered. No claim before green gates and shipping PSS/latency repeats. The unchanged r5lazy fixture has reached 2790 active s: host PSS 24340 KiB, fd/thread 3005/1, latest batch echo p99 8.612 ms. It is still above 5 ms. A counter-process A/B is queued because the existing private wakeup counter drains in a Python thread sharing the echo reader's interpreter; workload and thresholds stay unchanged. It is diagnostic and does not retroactively alter the original segmented admission run. [registration-red.log](https://git.kayg.org/attachments/73015e99-054f-43a2-a01a-98910ecb88b5) [two-ready-red.log](https://git.kayg.org/attachments/42395176-3cd8-40d5-9435-0111c04204d8) [geometry-before-perf.log](https://git.kayg.org/attachments/7f1f5f99-addc-4cd3-90af-80f40900531d)
kayg commented 2026-10-15 04:04:45 +00:00
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Orchestrator: perf VM fairness breach. ppu_segment.py PID 2169590 (unit ppu-soak-r5lazy-soak) has held /var/lock/perf-bench.lock since ~02:27 UTC (7,200 s soak + 600 s warmup), against the 30-minute hold rule in rules.md. Seven other lanes are queued behind it, including idle-cpu-199, which gates the switch-over deploy. It is left to finish because it ends in about 25 minutes and the data would otherwise be lost. From now on, every soak runs as segments of 30 minutes or less, releasing the lock between segments. Do not queue another long hold.

Orchestrator: perf VM fairness breach. ppu_segment.py PID 2169590 (unit ppu-soak-r5lazy-soak) has held /var/lock/perf-bench.lock since ~02:27 UTC (7,200 s soak + 600 s warmup), against the 30-minute hold rule in rules.md. Seven other lanes are queued behind it, including idle-cpu-199, which gates the switch-over deploy. It is left to finish because it ends in about 25 minutes and the data would otherwise be lost. From now on, every soak runs as segments of 30 minutes or less, releasing the lock between segments. Do not queue another long hold.
kayg commented 2026-10-15 04:19:39 +00:00
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Steps pushed: 68311a33a fixes a real benchmark-coordinator cleanup gap. Functional real user-scope reproduction on the build host (no performance claim): launcher exited with an owned descendant still populated; old retire leaves it populated, repaired retire empties it. The child blocks in signal.pause and ignores TERM/HUP. Reused unit names remain fenced by the invocation tag, and a scope-query error is not cleanup proof. All 42 Python driver checks pass.

21bb28184 records direct-PTY startup cohorts. The first control reached the 115-active-second outer limit without a result and is discarded. Its scope is inactive with an empty ControlGroup. A repeat keeps the same 90-second body, logs setup separately and permits 300 seconds including setup; it is queued, not a budget pass. No original-soak workload or threshold change.

Readiness feature clippy and 146 compact library tests pass (21 intentional ignores); standalone real-host reliability and minimal shipping artifacts continue in the build slot. Original r5lazy remains the same frozen fixture at 3480.129 coordinator-active seconds. D128 exact whole-host replacement remains unimplemented; descriptor transfer is not presented as state survival.

retire-red.log
retire-green.log
retire-real-fixed.log
retire-proof.txt
raw-echo.log

Steps pushed: 68311a33a fixes a real benchmark-coordinator cleanup gap. Functional real user-scope reproduction on the build host (no performance claim): launcher exited with an owned descendant still populated; old retire leaves it populated, repaired retire empties it. The child blocks in signal.pause and ignores TERM/HUP. Reused unit names remain fenced by the invocation tag, and a scope-query error is not cleanup proof. All 42 Python driver checks pass. 21bb28184 records direct-PTY startup cohorts. The first control reached the 115-active-second outer limit without a result and is discarded. Its scope is inactive with an empty ControlGroup. A repeat keeps the same 90-second body, logs setup separately and permits 300 seconds including setup; it is queued, not a budget pass. No original-soak workload or threshold change. Readiness feature clippy and 146 compact library tests pass (21 intentional ignores); standalone real-host reliability and minimal shipping artifacts continue in the build slot. Original r5lazy remains the same frozen fixture at 3480.129 coordinator-active seconds. D128 exact whole-host replacement remains unimplemented; descriptor transfer is not presented as state survival. [retire-red.log](https://git.kayg.org/attachments/1b0e1b24-6d7a-41b8-b29d-da847a19237d) [retire-green.log](https://git.kayg.org/attachments/598945e9-e9ad-4860-9dd0-1bc30c40bcf7) [retire-real-fixed.log](https://git.kayg.org/attachments/dee6b4b6-51d7-4bd4-9b67-61aad6f61ddb) [retire-proof.txt](https://git.kayg.org/attachments/af5e1463-cf87-47ad-8b01-ed0139786030) [raw-echo.log](https://git.kayg.org/attachments/07659ec6-aa00-4731-9070-84daaae24d9d)
kayg commented 2026-10-15 04:41:58 +00:00
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Steps pushed through 42e5b4ac8. af6c2d120 replaces retained ready-event hashing with slot-indexed rows, 2 inline descriptors, checked 16-bit registration indices and preserved generation fences. Red regressions: 24-B registration and 1 transient PTY+viewer allocation. Green: <=16-B registration, <=64 requested row/index bytes per slot, no allocations across repeated ordinary turns; 146 compact library tests and both standalone reliability cases pass. Matching minimal normal/compact images are 2521472/2531872 B. Independent shipping PSS (plus separate kernel PTYs) and balanced old/lazy/ready throughput/echo repeats are queued.

7fe7d4718 bounds deferred geometry by 65536 destination cells as well as 32 events/4096 prefix bytes, preserving every byte/geometry position. Red large-reflow test becomes green; 148 compact library tests and both real-host reliability cases pass. Both minimal images build. The after perf fixture is queued with unchanged ELF and environment/hash receipt. This moves large reflows earlier; total reflow CPU remains, and coalesced controls/single native operations still run on the loop. No 5-ms claim.

Separate wakeup-counter-process diagnostic, 120 s/1000 sessions/warmup30/interval1, original lazy image 688f6bb9: all1000 respond; median settled batch p99=10.543674 ms, peak20.288383, fd/thread growth0/0, zero trace overruns. Thus removing that interpreter thread alone does not meet5ms. This short diagnostic is not stability admission (its PSS grows16852 KiB during the short warmup/fill lifecycle). Detailed numeric tracing is now queued in a separate process too, with inherited viewer socket copies closed and all correlation checks retained; no retroactive subtraction from admission.

The unchanged original r5lazy fixture thawed its third segment at04:31:36 UTC, preserving3480.129 active seconds and3385953338562 excluded frozen nanoseconds. Full head iterate is queued through build-slot with RUST_TEST_THREADS=2; final fast still required. D128 exact whole-host import remains unimplemented. No default switch or deploy.

readiness-gates-relinked.log
geometry-work-red.log
geometry-work-gates.log
counter-process-samples.log

Steps pushed through 42e5b4ac8. af6c2d120 replaces retained ready-event hashing with slot-indexed rows, 2 inline descriptors, checked 16-bit registration indices and preserved generation fences. Red regressions: 24-B registration and 1 transient PTY+viewer allocation. Green: <=16-B registration, <=64 requested row/index bytes per slot, no allocations across repeated ordinary turns; 146 compact library tests and both standalone reliability cases pass. Matching minimal normal/compact images are 2521472/2531872 B. Independent shipping PSS (plus separate kernel PTYs) and balanced old/lazy/ready throughput/echo repeats are queued. 7fe7d4718 bounds deferred geometry by 65536 destination cells as well as 32 events/4096 prefix bytes, preserving every byte/geometry position. Red large-reflow test becomes green; 148 compact library tests and both real-host reliability cases pass. Both minimal images build. The after perf fixture is queued with unchanged ELF and environment/hash receipt. This moves large reflows earlier; total reflow CPU remains, and coalesced controls/single native operations still run on the loop. No 5-ms claim. Separate wakeup-counter-process diagnostic, 120 s/1000 sessions/warmup30/interval1, original lazy image 688f6bb9: all1000 respond; median settled batch p99=10.543674 ms, peak20.288383, fd/thread growth0/0, zero trace overruns. Thus removing that interpreter thread alone does not meet5ms. This short diagnostic is not stability admission (its PSS grows16852 KiB during the short warmup/fill lifecycle). Detailed numeric tracing is now queued in a separate process too, with inherited viewer socket copies closed and all correlation checks retained; no retroactive subtraction from admission. The unchanged original r5lazy fixture thawed its third segment at04:31:36 UTC, preserving3480.129 active seconds and3385953338562 excluded frozen nanoseconds. Full head iterate is queued through build-slot with RUST_TEST_THREADS=2; final fast still required. D128 exact whole-host import remains unimplemented. No default switch or deploy. [readiness-gates-relinked.log](https://git.kayg.org/attachments/90f1e032-48de-47d9-991e-1d6c0d217b2e) [geometry-work-red.log](https://git.kayg.org/attachments/11475099-abda-4d11-bdbc-fa7248a85166) [geometry-work-gates.log](https://git.kayg.org/attachments/1555784f-55b2-48da-b396-8f12dbcce413) [counter-process-samples.log](https://git.kayg.org/attachments/4920645b-ddb9-4bdc-b2ba-c0a7c5bd4ac0)
kayg commented 2026-10-15 05:23:43 +00:00
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Perf wait receipts: geometry-after reached45min at05:19:21 UTC; delivery-process reached45min at05:21:01 UTC. Both recorded owner file mesh-autoswitch diag-standing82bb-31-a venue=150 started=2026-10-15T05:05:42Z. Both continue waiting. Original r5lazy is frozen after5220.219 coordinator-active seconds, retaining the same scope/fixture.

Independent ready-image idle result is complete, 3 repeats. PSS KiB atN=1/10/100/1000:1420-1424 /1432 /1516 /2368. All ownership rows have zero native VT allocation, and every two-second idle window has zero CPU ticks. The endpoint slope is0.945-0.949KiB/session, excluding shells and kernel PTYs. Image PSS is1296KiB at everyN; the first repeat's N1→N1000 increment is anonymous+940KiB, heap+8KiB, stack/image0. The earlier lazy image measured1.045-1.049KiB/session; the1000-session PSS reduction is96-100KiB. Shared capacities are being added to the numeric receipt to close the requested-byte ledger directly.

The direct-PTY diagnostic repeat completes all90batches/all1000shells and cleans every owned shell. After30s its61batch p99s have median16.321216ms/peak35.050514ms; all61exceed5ms. Different reader/setup means this is not a mathematical lower bound and is not admission. Full head iterate at42e5b4ac8 passed every Rust row and the TypeScript checks/tests; final fast still required. Passive native observer21f25ace is pushed:5tests+featureclippy/static build pass; it reads original probe markers without extra input. Its measured run is queued.

Perf wait receipts: geometry-after reached45min at05:19:21 UTC; delivery-process reached45min at05:21:01 UTC. Both recorded owner file `mesh-autoswitch diag-standing82bb-31-a venue=150 started=2026-10-15T05:05:42Z`. Both continue waiting. Original r5lazy is frozen after5220.219 coordinator-active seconds, retaining the same scope/fixture. Independent ready-image idle result is complete, 3 repeats. PSS KiB atN=1/10/100/1000:1420-1424 /1432 /1516 /2368. All ownership rows have zero native VT allocation, and every two-second idle window has zero CPU ticks. The endpoint slope is0.945-0.949KiB/session, excluding shells and kernel PTYs. Image PSS is1296KiB at everyN; the first repeat's N1→N1000 increment is anonymous+940KiB, heap+8KiB, stack/image0. The earlier lazy image measured1.045-1.049KiB/session; the1000-session PSS reduction is96-100KiB. Shared capacities are being added to the numeric receipt to close the requested-byte ledger directly. The direct-PTY diagnostic repeat completes all90batches/all1000shells and cleans every owned shell. After30s its61batch p99s have median16.321216ms/peak35.050514ms; all61exceed5ms. Different reader/setup means this is not a mathematical lower bound and is not admission. Full head iterate at42e5b4ac8 passed every Rust row and the TypeScript checks/tests; final fast still required. Passive native observer21f25ace is pushed:5tests+featureclippy/static build pass; it reads original probe markers without extra input. Its measured run is queued.
kayg commented 2026-10-15 05:43:19 +00:00
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Regarding the orchestration hold-duration note: the live r5lazy fixture already uses1740-second segments. Its kernel-acknowledged boundary receipt records02:37:09→03:06:10 (1740.046s),03:35:45→04:04:45 (1740.083s),04:31:36→05:00:36 (1740.090s), releasing the perf lock between each. It is currently frozen after5220.219 active seconds. PID2169590 is the persistent coordinator, whose lifetime includes the waits; it is not evidence of a continuous lock hold. The attached current audit also shows frozen 1, blocked lock waiters, and the holder owner file naming the separate cells-mixed fixture at05:37:29. No new long hold is queued; all new phases use the same1740-second coordinator ceiling and short outer timeouts.

segmentation-audit.log

Regarding the orchestration hold-duration note: the live r5lazy fixture already uses1740-second segments. Its kernel-acknowledged boundary receipt records02:37:09→03:06:10 (1740.046s),03:35:45→04:04:45 (1740.083s),04:31:36→05:00:36 (1740.090s), releasing the perf lock between each. It is currently frozen after5220.219 active seconds. PID2169590 is the persistent coordinator, whose lifetime includes the waits; it is not evidence of a continuous lock hold. The attached current audit also shows `frozen 1`, blocked lock waiters, and the holder owner file naming the separate cells-mixed fixture at05:37:29. No new long hold is queued; all new phases use the same1740-second coordinator ceiling and short outer timeouts. [segmentation-audit.log](https://git.kayg.org/attachments/21f88b5a-0fc4-4162-bd16-f09548a0c057)
kayg commented 2026-10-15 05:58:31 +00:00
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D270 correctness finding at head40aad2d74: SIGCHLD observes a shell exit and sets its retention deadline before housekeeping. The previous settle path only inserted a timer when housekeeping itself first created the deadline; an attached owner could therefore retain the ended session indefinitely with no further event. Real-PTY regression fails before the repair (missing heap entry). The repair deduplicates timer membership in a spare bit of the existing readiness byte, preserving bulk promotion/cancellation and round-wrap behavior. Focused gate:151 compact library tests pass,21 explicit ignores;2 real-host reliability tests pass;fmt/clippy pass. Static prototype rebuild is still running before the atomic commit.

Shared ownership collector40aad2d74 is pushed (149 library tests and both reliability tests green); it adds requested capacities to the first live numeric session receipt without changing session-row counts. Its independent perf idle run is queued. The balanced fairness matrix reached45min at05:49:19UTC; owner file reported process-per-user ppu-soak-r5lazy-soak 2026-10-15T05:42:41.886627+00:00; it continues waiting. This is the fourth bounded segment of the original fixture, not a continuous hold.

retention-red.log
ready-idle-perf.log
segmentation-audit.log

D270 correctness finding at head40aad2d74: SIGCHLD observes a shell exit and sets its retention deadline before housekeeping. The previous settle path only inserted a timer when housekeeping itself first created the deadline; an attached owner could therefore retain the ended session indefinitely with no further event. Real-PTY regression fails before the repair (missing heap entry). The repair deduplicates timer membership in a spare bit of the existing readiness byte, preserving bulk promotion/cancellation and round-wrap behavior. Focused gate:151 compact library tests pass,21 explicit ignores;2 real-host reliability tests pass;fmt/clippy pass. Static prototype rebuild is still running before the atomic commit. Shared ownership collector40aad2d74 is pushed (149 library tests and both reliability tests green); it adds requested capacities to the first live numeric session receipt without changing session-row counts. Its independent perf idle run is queued. The balanced fairness matrix reached45min at05:49:19UTC; owner file reported `process-per-user ppu-soak-r5lazy-soak 2026-10-15T05:42:41.886627+00:00`; it continues waiting. This is the fourth bounded segment of the original fixture, not a continuous hold. [retention-red.log](https://git.kayg.org/attachments/6053b9ec-8022-45cc-a327-af2baa0e0d2a) [ready-idle-perf.log](https://git.kayg.org/attachments/c643f143-fc58-43a0-947e-e4ac50a586a8) [segmentation-audit.log](https://git.kayg.org/attachments/43b717cb-6264-4782-af79-3795ec5dc463)
kayg commented 2026-10-15 06:03:28 +00:00
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Steps pushed:68c9abf95 fixes retention-timer registration after signal-observed exit (real-PTY red test first;151 compact library cases,21 explicit ignores;2 reliability cases;fmt/clippy and both minimal static builds pass). f0d97cb4a documents timer membership, shared allocation facts and passive native receipts. Final scripts/verify fast is running through build-slot on this head with RUST_TEST_THREADS=2.

Remaining latency evidence, locked perf VM, no admission subtraction:

diagnostic duration / setup echo result interpretation
separate-process numeric tracing, original lazy image 120s,30s warmup,interval1;12000/12000 probes correlated;zero overruns post-warmup echo p9918.373914ms;reader-delay lower bound p999.610919ms;1220/9000 bounds>5ms host userspace gap p99/max0.048/3.171ms;wakeup-to-running4.441/13.860ms;tracing changes scheduling
bounded-cell candidate7fe7d4718, unchanged original cadence 180s,120s warmup,interval10 7 settled batch p99s:median9.997686ms,peak12.784270ms 5ms target fails;1000 responsive survivors;fd/thread growth0;PSS growth4KiB over the short settled window;not two-hour admission

Original77ecd3026 fixture is still completing the same7200-active-second segmented soak;at6360s PSS24496KiB,fd/thread3005/1,echo p9917.090637ms. Passive observer waiter reached45min at05:56:53UTC and recorded owner file process-per-user ppu-soak-r5lazy-soak 2026-10-15T05:42:41.886627+00:00;it continues waiting. Matching normal-feature geometry repeat is queued because the first after artifact used compact history;do not compare its total CPU against the normal before artifact. Whole-host exact state/FD replacement remains pending after latency, per the requested order;repaint/descriptor-only transfer is insufficient.

retention-gates.log
delivery-process-brief.json
cells-mixed-samples.log

Steps pushed:68c9abf95 fixes retention-timer registration after signal-observed exit (real-PTY red test first;151 compact library cases,21 explicit ignores;2 reliability cases;fmt/clippy and both minimal static builds pass). f0d97cb4a documents timer membership, shared allocation facts and passive native receipts. Final scripts/verify fast is running through build-slot on this head with RUST_TEST_THREADS=2. Remaining latency evidence, locked perf VM, no admission subtraction: | diagnostic | duration / setup | echo result | interpretation | |---|---|---|---| | separate-process numeric tracing, original lazy image |120s,30s warmup,interval1;12000/12000 probes correlated;zero overruns|post-warmup echo p9918.373914ms;reader-delay lower bound p999.610919ms;1220/9000 bounds>5ms|host userspace gap p99/max0.048/3.171ms;wakeup-to-running4.441/13.860ms;tracing changes scheduling| | bounded-cell candidate7fe7d4718, unchanged original cadence |180s,120s warmup,interval10|7 settled batch p99s:median9.997686ms,peak12.784270ms|5ms target fails;1000 responsive survivors;fd/thread growth0;PSS growth4KiB over the short settled window;not two-hour admission| Original77ecd3026 fixture is still completing the same7200-active-second segmented soak;at6360s PSS24496KiB,fd/thread3005/1,echo p9917.090637ms. Passive observer waiter reached45min at05:56:53UTC and recorded owner file `process-per-user ppu-soak-r5lazy-soak 2026-10-15T05:42:41.886627+00:00`;it continues waiting. Matching normal-feature geometry repeat is queued because the first after artifact used compact history;do not compare its total CPU against the normal before artifact. Whole-host exact state/FD replacement remains pending after latency, per the requested order;repaint/descriptor-only transfer is insufficient. [retention-gates.log](https://git.kayg.org/attachments/40ee8227-b6a3-4471-a151-b828535763ec) [delivery-process-brief.json](https://git.kayg.org/attachments/f515103f-c014-437d-9ca6-45a993a78407) [cells-mixed-samples.log](https://git.kayg.org/attachments/c32a37e9-e1b1-405b-bbe6-6379521a16f8)
kayg commented 2026-10-15 06:15:59 +00:00
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D270 remaining-stall experiment: the passive native reader confirms12000/12000 original probes but still sees13.793256ms pooled p99 (original reader15.918045ms);extra100viewers remain diagnostic overhead. Prior separate-process trace shows host wakeup-to-running p99/max4.441/13.860ms against userspace-gap0.048/3.171ms. Next benchmark only the owned host at nice0/-10/-20 after all1000shells have spawned; verify every shell stays nice0. Same180s/warmup120/interval10 workload,three short comparisons inside one bounded measurement scope. This tests scheduler contribution,does not change production configuration,and requires privileged launch so it is not an adoption choice. No other process priority is changed. Exact source68c9abf95;finalgateheadf0d97cb4a has documentation only after it.

D270 remaining-stall experiment: the passive native reader confirms12000/12000 original probes but still sees13.793256ms pooled p99 (original reader15.918045ms);extra100viewers remain diagnostic overhead. Prior separate-process trace shows host wakeup-to-running p99/max4.441/13.860ms against userspace-gap0.048/3.171ms. Next benchmark only the owned host at nice0/-10/-20 after all1000shells have spawned; verify every shell stays nice0. Same180s/warmup120/interval10 workload,three short comparisons inside one bounded measurement scope. This tests scheduler contribution,does not change production configuration,and requires privileged launch so it is not an adoption choice. No other process priority is changed. Exact source68c9abf95;finalgateheadf0d97cb4a has documentation only after it.
kayg commented 2026-10-15 06:21:51 +00:00
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Passive native diagnostic complete on7fe7d4718 normal image:12000/12000 existing probe markers correlated,100 additional viewers,zero additional input commands. After30s (9000 probes), native receive upper p9913.785942ms versus original15.973148ms. Across90 settled batches,native median/peak p998.519385/20.002071ms;83 upper-bound batches exceed5ms. Extra fan-out and the conservative start boundary remain diagnostic overhead;this result does not establish a driver-only explanation and no time is subtracted from admission.

Final fast atf0d97cb4a:workspace test row failed only saturated_native_control_queue_does_not_hide_primary_terminal_output,remote_control_queue_tests.rs:217 (!control_call.0.is_finished());server library422pass/1fail/46ignore. Its exact original workspace executable rerun selects1test and passes. This is not a waiver:the full workspace test row will be rerun after static checks. Other source rows passed so far. Current static builds continue;full transcript remains required.

Fairness measurement scheduling changed without changing its images/driver/samples:the first individual matrix row held the lock22.727s;its next pending coordinator was retired by exact validated PID before any fixture ran (scope inactive/empty). A fresh balanced18-row matrix now runs within one <=1200s owned measurement phase,still segmented at<=1740s. This avoids18 separate shared-queue waits;the lone earlier row remains separate preflight evidence and will not be mixed into its table. Mainr5lazy froze its fourth segment at6960.261active s /06:11:41UTC and released the lock for other jobs.

passive-brief.json
passive-batches.json
ppu-priority-source.txt
ready-batch-source.txt
server-control-red.log
server-control-exact.log

Passive native diagnostic complete on7fe7d4718 normal image:12000/12000 existing probe markers correlated,100 additional viewers,zero additional input commands. After30s (9000 probes), native receive upper p9913.785942ms versus original15.973148ms. Across90 settled batches,native median/peak p998.519385/20.002071ms;83 upper-bound batches exceed5ms. Extra fan-out and the conservative start boundary remain diagnostic overhead;this result does not establish a driver-only explanation and no time is subtracted from admission. Final fast atf0d97cb4a:workspace test row failed only saturated_native_control_queue_does_not_hide_primary_terminal_output,remote_control_queue_tests.rs:217 (`!control_call.0.is_finished()`);server library422pass/1fail/46ignore. Its exact original workspace executable rerun selects1test and passes. This is not a waiver:the full workspace test row will be rerun after static checks. Other source rows passed so far. Current static builds continue;full transcript remains required. Fairness measurement scheduling changed without changing its images/driver/samples:the first individual matrix row held the lock22.727s;its next pending coordinator was retired by exact validated PID before any fixture ran (scope inactive/empty). A fresh balanced18-row matrix now runs within one <=1200s owned measurement phase,still segmented at<=1740s. This avoids18 separate shared-queue waits;the lone earlier row remains separate preflight evidence and will not be mixed into its table. Mainr5lazy froze its fourth segment at6960.261active s /06:11:41UTC and released the lock for other jobs. [passive-brief.json](https://git.kayg.org/attachments/1a9fffb0-d396-4fe4-bb9e-0de68fc7b353) [passive-batches.json](https://git.kayg.org/attachments/1824c244-1666-4733-872f-8371cfa185b6) [ppu-priority-source.txt](https://git.kayg.org/attachments/f607b882-1470-4aa6-82e6-7abeef096c23) [ready-batch-source.txt](https://git.kayg.org/attachments/1e45fde0-e2ec-4293-8c99-3801092077e1) [server-control-red.log](https://git.kayg.org/attachments/ed4458e5-f356-454a-8095-b0193502b7d3) [server-control-exact.log](https://git.kayg.org/attachments/731b0921-a90f-486e-80df-28487f9c87c2)
kayg commented 2026-10-15 07:02:05 +00:00
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Independent byte ledger complete on collector40aad2d74, minimal normal artifact, perf VM4vCPU/kernel6.12.111, same runtime path. PSS KiB at1/10/100/1000 sessions:1420/1428/1520/2368; all idle windows0CPU ticks, all native ownership0. N1→1000 PSS grows948KiB (anonymous940, heap8, image/stack0), slope0.948949KiB/session. This excludes shells/kernel.

Each idle session requests456B structure +86B socket path +38B complete prefix +64B ring =644B. At1000, session-vector spare capacity adds10944B. Shared requested capacities:registry vectors40000, ready rows56000, active indices8000, membership5000, events24576, bulk8192, control/small-read64each; spill/deadline0. Hash usable capacity3584 and pair layout24B are measured; its private allocation is not public capacity. The pinned bucket-sizing model estimates102416B, making total899256B versus26973B atN1. Requested-growth estimate0.852692KiB/session leaves96.161KiB between requested and resident growth. That allocator/high-water residual is not a byte-complete attribution; independent unit-allocation validation and full-role PSS repeat remain pending.

Matched normal-feature geometry repeat (current68c9abf95 unit ELF,36 rows): after32 events,80x24 materialization621–690us versus629–832 before;160x60 and1000x100 are already native, materialization0. The large case moves work into prepare31825–39649us versus deferred24500–29397us before. This is a real total-CPU trade-off in these unbalanced runs, not a speedup claim; the cap bounds deferred work and preserves exact geometry. Prior compact-vs-normal CPU comparison is discarded.

Default production-recipe size atf0d97cb4a versus task baseb182529f: x8622277392−22275888=+1504B; ARM19705112−19704712=+400B. Both deltas meet16KiB; existing absolute caps still fail, unchanged. Final fast and the serial workspace retry each hit one different server failure; both exact original-executable isolated cases pass, which does not waive the full row. A weighted full gate is queued through build-slot; independent TypeScript checks pass (191/0 tracer,37/0 protocol).

verify-fast-head.log
default-size-comparison.log
ledger-idle-perf.log
idle-ledger-reconciliation.json
geometry-after-normal-perf.log
matched-geometry-brief.json

Independent byte ledger complete on collector40aad2d74, minimal normal artifact, perf VM4vCPU/kernel6.12.111, same runtime path. PSS KiB at1/10/100/1000 sessions:1420/1428/1520/2368; all idle windows0CPU ticks, all native ownership0. N1→1000 PSS grows948KiB (anonymous940, heap8, image/stack0), slope0.948949KiB/session. This excludes shells/kernel. Each idle session requests456B structure +86B socket path +38B complete prefix +64B ring =644B. At1000, session-vector spare capacity adds10944B. Shared requested capacities:registry vectors40000, ready rows56000, active indices8000, membership5000, events24576, bulk8192, control/small-read64each; spill/deadline0. Hash usable capacity3584 and pair layout24B are measured; its private allocation is not public capacity. The pinned bucket-sizing model estimates102416B, making total899256B versus26973B atN1. Requested-growth estimate0.852692KiB/session leaves96.161KiB between requested and resident growth. That allocator/high-water residual is not a byte-complete attribution; independent unit-allocation validation and full-role PSS repeat remain pending. Matched normal-feature geometry repeat (current68c9abf95 unit ELF,36 rows): after32 events,80x24 materialization621–690us versus629–832 before;160x60 and1000x100 are already native, materialization0. The large case moves work into prepare31825–39649us versus deferred24500–29397us before. This is a real total-CPU trade-off in these unbalanced runs, not a speedup claim; the cap bounds deferred work and preserves exact geometry. Prior compact-vs-normal CPU comparison is discarded. Default production-recipe size atf0d97cb4a versus task baseb182529f: x8622277392−22275888=+1504B; ARM19705112−19704712=+400B. Both deltas meet16KiB; existing absolute caps still fail, unchanged. Final fast and the serial workspace retry each hit one different server failure; both exact original-executable isolated cases pass, which does not waive the full row. A weighted full gate is queued through build-slot; independent TypeScript checks pass (191/0 tracer,37/0 protocol). [verify-fast-head.log](https://git.kayg.org/attachments/7cd7bb65-eeb7-4cc3-bf12-b517944bc902) [default-size-comparison.log](https://git.kayg.org/attachments/7f5f8146-1442-46e9-ba5e-a8be270f37cf) [ledger-idle-perf.log](https://git.kayg.org/attachments/2a467186-49b1-441e-8601-c0f33624aee7) [idle-ledger-reconciliation.json](https://git.kayg.org/attachments/be0bb75e-9e0f-48b9-99a8-bc80c8351200) [geometry-after-normal-perf.log](https://git.kayg.org/attachments/9a7df4c5-9310-4fce-a7e1-a949175590b5) [matched-geometry-brief.json](https://git.kayg.org/attachments/817f9057-6aae-499c-8b62-8163a8b3e947)
kayg commented 2026-10-15 07:08:12 +00:00
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Original r5lazy segmented soak COMPLETE on77ecd3026 implementation, binary688f6bb95d02cd8e68c2dc916a085540dd6894b2bd4b3304622d7bf70d283324. Same1000-session fixture throughout;720 samples/7200.015826driver-active s;1000/1000 final input confirmations. Four1740s holds plus a248s final hold;8341194010899ns certified frozen time excluded. No combined fixtures. This tests the original lazy geometry implementation, not later68c9abf95 repairs.

criterion prior r3 complete run5f897f93 r5lazy77ecd3026 result
settled PSS growth 176KiB 204KiB within1024KiB
settled PSS slope 106.592KiB/h 152.526KiB/h within1024KiB/h
descriptor/thread growth 0/0 0/0 PASS
responsive sessions 1000/1000 1000/1000 PASS
first/last batch-p99 median 8.004/10.301ms 9.450/14.679ms steadiness ratio1.553>1.25
peak settled batch p99 112.157ms 85.940ms FAIL5ms

All661 settled r5 batches exceed5ms;median batch p9911.601456ms. Last host PSS24548KiB;fixed role/image costs differ from the r3 full-role image,so absolute PSS is not a matched-image comparison. Memory settles;latency is still red. The64K-cell/retention fixes and independent idle results are separate evidence. Whole-host exact D128 replacement remains pending per the requested order;its existing acceptance case is explicitly red.

soak-summary.json
soak-samples.log
soak-segments.log

Original r5lazy segmented soak COMPLETE on77ecd3026 implementation, binary688f6bb95d02cd8e68c2dc916a085540dd6894b2bd4b3304622d7bf70d283324. Same1000-session fixture throughout;720 samples/7200.015826driver-active s;1000/1000 final input confirmations. Four1740s holds plus a248s final hold;8341194010899ns certified frozen time excluded. No combined fixtures. This tests the original lazy geometry implementation, not later68c9abf95 repairs. | criterion | prior r3 complete run5f897f93 | r5lazy77ecd3026 | result | |---|---:|---:|---| | settled PSS growth |176KiB |204KiB |within1024KiB | | settled PSS slope |106.592KiB/h |152.526KiB/h |within1024KiB/h | | descriptor/thread growth |0/0 |0/0 |PASS | | responsive sessions |1000/1000 |1000/1000 |PASS | | first/last batch-p99 median |8.004/10.301ms |9.450/14.679ms |steadiness ratio1.553>1.25 | | peak settled batch p99 |112.157ms |85.940ms |FAIL5ms | All661 settled r5 batches exceed5ms;median batch p9911.601456ms. Last host PSS24548KiB;fixed role/image costs differ from the r3 full-role image,so absolute PSS is not a matched-image comparison. Memory settles;latency is still red. The64K-cell/retention fixes and independent idle results are separate evidence. Whole-host exact D128 replacement remains pending per the requested order;its existing acceptance case is explicitly red. [soak-summary.json](https://git.kayg.org/attachments/dd3f0c63-4062-4ddd-8e61-991b4f0a622e) [soak-samples.log](https://git.kayg.org/attachments/a42c2eb9-60aa-4a77-8c58-97563ed44db7) [soak-segments.log](https://git.kayg.org/attachments/4a81c0a6-3613-4116-b8bf-46b20283976f)
kayg commented 2026-10-15 08:32:09 +00:00
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r 5 measured delta checkpoint, branch process-per-user, head f0d97cb4ac90c94fbe8f4cf31bafeff937415272. D81/D128/D268/D270. All numbers below are perf-VM measurements under the exclusive lock; source/image hashes, machine/load and fixture details are in the attached receipts. No default switch.

Item Earlier evidence r 5 evidence Status
Independent full-role idle PSS slope r 3 1.333–1.353 KiB/session Three repeats: 0.948949–0.956957 KiB/session Below 1 KiB; fixed host ~5 MiB, shells/kernel additional
Two-hour settled PSS growth r 3 +176 KiB; prior problem +323 MiB +204 KiB; 152.526 KiB/h; fd/thread growth0; all 1000 responsive Memory settles
Soak peak batch echo p 99 r 3 112.157 ms 85.940 ms; median batch p 99 11.601 ms; all 661 post-warm batches >5 ms FAIL; no head-wide two-hour admission
Balanced bulk throughput, normal feature median Old image 32.560 MB/s Indexed-ready image 24.162 MB/s Regression in this matrix; neutrality not established
Balanced bulk throughput, compact feature median Old image 22.106 MB/s Indexed-ready image 24.725 MB/s Quiet echo still fails
Quiet echo <=2 ms over idle, three repeats Old normal 2/3; old compact 1/3 pass Indexed-ready normal 0/3; compact 0/3 pass FAIL; no baseline waiver
10000 numbered 72-column compact history Published 407 KiB reference (context, different implementation) Isolated compact-artifact PSS increments324–360 KiB Below reference; exact search/selection/replay tests pass
Whole-host D128 handoff Unimplemented Explicit real-fixture red case,999 siblings still responsive Unimplemented; not adoption-ready

Full-role idle PSS KiB at 1/10/100/1000 sessions: repeat 0 5004/5016/5120/5960, repeat 1 5008/5016/5120/5964, repeat 2 5012/5016/5116/5960. All 12 two-second idle windows show 0 CPU ticks and 0 native allocations. Full-role image SHA256 a60d56db2d383687b4ab742f2c5d803ca4f9f9f60be3ae8fa7dbcce8b7ac44aa. [full-role-idle-rows.json](https://git.kayg.org/attachments/3ef3152c-0b 25-41aa-94b 4-c1a3e528edb0), full-role-idle.log, [full-memory-perf.log](https://git.kayg.org/attachments/287adde 1-3208-4f5e-9e9c-0fbc72a2a52b)

Ownership: session 456 B + socket path 86 B + prefix 38 B + ring 64 B =644 B/session. At1000, requested live total 899256 B includes slot spare, indexed readiness, registry, event buffer and queue capacities. Independent allocator validates hash requests 116/816/6416/102416 B at 1/10/100/1000. Requested growth0.852692 KiB/session leaves96.161–104.161 KiB of resident-growth difference across 999 sessions unattributed; allocator/libc/high-water attribution is still open. This closes the prior false equivalence between requested bytes and PSS, not every resident byte. [idle-ledger-validated.json](https://git.kayg.org/attachments/af4116e 1-64d 5-46c 6-9214-93255b037bdf), [full-memory-perf.log](https://git.kayg.org/attachments/287adde 1-3208-4f5e-9e9c-0fbc72a2a52b)

Separate 2000-pair kernel repeats: global vmalloc23.992/24/24 KiB per PTY pair; scoped kernel charge after epoll/first output2.106/2.124/2.634 KiB/pair. Global slab is noisy. These are different accounting views, not an exact additive replacement for the prior27.9 KiB estimate. [ready-idle-perf.log](https://git.kayg.org/attachments/ea 073702-95c 4-4f0e-8334-3422951f7aaf)

The completed 7200-active-second soak uses77ecd 3026 image 688f6bb9…, not final head. It retains one fixture across <=1740-second lock segments. Later changes have focused/short evidence only. Compact history figures exclude the raw ring and use an isolated larger-history fixture; the 50-terminal raw history fixture gives339.1 KiB/history, not a claim that the shared host's 64 MiB history pool retains 10000 lines in every terminal. [soak-summary.json](https://git.kayg.org/attachments/72a16f8f-fa 48-4c 86-96a 3-ae7fc9680ffe), [history-perf.log](https://git.kayg.org/attachments/2e7bccc 9-4da 7-4fff-a0c 1-b485ca75b0a2), [balanced-summary.json](https://git.kayg.org/attachments/a3c67e 00-63b 9-44c 5-8aef-d2201ff2cf7f), [ready-balanced.log](https://git.kayg.org/attachments/eb23f 545-4e7c-4721-ab 46-09550a41aa81)

Matched geometry repeat:32 events at1000x 100 used to materialize in24.500–29.397 ms; destination-cell cap materializes earlier during preparation31.825–39.649 ms. Work moved, not removed from the input path. [matched-geometry-brief.json](https://git.kayg.org/attachments/817f 9057-6aae-499c-8b 62-8163a8b3e947), [geometry-after-normal-perf.log](https://git.kayg.org/attachments/9a7df4c 5-9310-4fce-a7e 1-a949175590b5)

r 5 measured delta checkpoint, branch `process-per-user`, head `f0d97cb4ac90c94fbe8f4cf31bafeff937415272`. D81/D128/D268/D270. All numbers below are perf-VM measurements under the exclusive lock; source/image hashes, machine/load and fixture details are in the attached receipts. No default switch. | Item | Earlier evidence | r 5 evidence | Status | |---|---|---|---| | Independent full-role idle PSS slope | r 3 1.333–1.353 KiB/session | Three repeats: 0.948949–0.956957 KiB/session | Below 1 KiB; fixed host ~5 MiB, shells/kernel additional | | Two-hour settled PSS growth | r 3 +176 KiB; prior problem +323 MiB | +204 KiB; 152.526 KiB/h; fd/thread growth0; all 1000 responsive | Memory settles | | Soak peak batch echo p 99 | r 3 112.157 ms | 85.940 ms; median batch p 99 11.601 ms; all 661 post-warm batches >5 ms | FAIL; no head-wide two-hour admission | | Balanced bulk throughput, normal feature median | Old image 32.560 MB/s | Indexed-ready image 24.162 MB/s | Regression in this matrix; neutrality not established | | Balanced bulk throughput, compact feature median | Old image 22.106 MB/s | Indexed-ready image 24.725 MB/s | Quiet echo still fails | | Quiet echo <=2 ms over idle, three repeats | Old normal 2/3; old compact 1/3 pass | Indexed-ready normal 0/3; compact 0/3 pass | FAIL; no baseline waiver | | 10000 numbered 72-column compact history | Published 407 KiB reference (context, different implementation) | Isolated compact-artifact PSS increments324–360 KiB | Below reference; exact search/selection/replay tests pass | | Whole-host D128 handoff | Unimplemented | Explicit real-fixture red case,999 siblings still responsive | Unimplemented; not adoption-ready | Full-role idle PSS KiB at 1/10/100/1000 sessions: repeat 0 `5004/5016/5120/5960`, repeat 1 `5008/5016/5120/5964`, repeat 2 `5012/5016/5116/5960`. All 12 two-second idle windows show 0 CPU ticks and 0 native allocations. Full-role image SHA256 `a60d56db2d383687b4ab742f2c5d803ca4f9f9f60be3ae8fa7dbcce8b7ac44aa`. [full-role-idle-rows.json](https://git.kayg.org/attachments/3ef3152c-0b 25-41aa-94b 4-c1a3e528edb0), [full-role-idle.log](https://git.kayg.org/attachments/fb19733b-fccb-4f0e-a64a-f6288c1bda42), [full-memory-perf.log](https://git.kayg.org/attachments/287adde 1-3208-4f5e-9e9c-0fbc72a2a52b) Ownership: session 456 B + socket path 86 B + prefix 38 B + ring 64 B =644 B/session. At1000, requested live total 899256 B includes slot spare, indexed readiness, registry, event buffer and queue capacities. Independent allocator validates hash requests 116/816/6416/102416 B at 1/10/100/1000. Requested growth0.852692 KiB/session leaves96.161–104.161 KiB of resident-growth difference across 999 sessions unattributed; allocator/libc/high-water attribution is still open. This closes the prior false equivalence between requested bytes and PSS, not every resident byte. [idle-ledger-validated.json](https://git.kayg.org/attachments/af4116e 1-64d 5-46c 6-9214-93255b037bdf), [full-memory-perf.log](https://git.kayg.org/attachments/287adde 1-3208-4f5e-9e9c-0fbc72a2a52b) Separate 2000-pair kernel repeats: global vmalloc23.992/24/24 KiB per PTY pair; scoped kernel charge after epoll/first output2.106/2.124/2.634 KiB/pair. Global slab is noisy. These are different accounting views, not an exact additive replacement for the prior27.9 KiB estimate. [ready-idle-perf.log](https://git.kayg.org/attachments/ea 073702-95c 4-4f0e-8334-3422951f7aaf) The completed 7200-active-second soak uses77ecd 3026 image `688f6bb9…`, not final head. It retains one fixture across <=1740-second lock segments. Later changes have focused/short evidence only. Compact history figures exclude the raw ring and use an isolated larger-history fixture; the 50-terminal raw history fixture gives339.1 KiB/history, not a claim that the shared host's 64 MiB history pool retains 10000 lines in every terminal. [soak-summary.json](https://git.kayg.org/attachments/72a16f8f-fa 48-4c 86-96a 3-ae7fc9680ffe), [history-perf.log](https://git.kayg.org/attachments/2e7bccc 9-4da 7-4fff-a0c 1-b485ca75b0a2), [balanced-summary.json](https://git.kayg.org/attachments/a3c67e 00-63b 9-44c 5-8aef-d2201ff2cf7f), [ready-balanced.log](https://git.kayg.org/attachments/eb23f 545-4e7c-4721-ab 46-09550a41aa81) Matched geometry repeat:32 events at1000x 100 used to materialize in24.500–29.397 ms; destination-cell cap materializes earlier during preparation31.825–39.649 ms. Work moved, not removed from the input path. [matched-geometry-brief.json](https://git.kayg.org/attachments/817f 9057-6aae-499c-8b 62-8163a8b3e947), [geometry-after-normal-perf.log](https://git.kayg.org/attachments/9a7df4c 5-9310-4fce-a7e 1-a949175590b5)
kayg commented 2026-10-15 08:32:41 +00:00
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Correction: the attachment URLs in the preceding measurement comment were damaged by formatting. This replaces that comment with intact links and source identifiers.

r5 measured delta checkpoint, branch process-per-user, head f0d97cb4ac90c94fbe8f4cf31bafeff937415272. D81/D128/D268/D270. All numbers below are perf-VM measurements under the exclusive lock; source/image hashes, machine/load and fixture details are in the attached receipts. No default switch.

Item Earlier evidence r5 evidence Status
Independent full-role idle PSS slope r3 1.333–1.353 KiB/session Three repeats: 0.948949–0.956957 KiB/session Below 1 KiB; fixed host ~5 MiB, shells/kernel additional
Two-hour settled PSS growth r3 +176 KiB; prior problem +323 MiB +204 KiB; 152.526 KiB/h; fd/thread growth0; all 1000 responsive Memory settles
Soak peak batch echo p 99 r3 112.157 ms 85.940 ms; median batch p 99 11.601 ms; all 661 post-warm batches >5 ms FAIL; no head-wide two-hour admission
Balanced bulk throughput, normal feature median Old image 32.560 MB/s Indexed-ready image 24.162 MB/s Regression in this matrix; neutrality not established
Balanced bulk throughput, compact feature median Old image 22.106 MB/s Indexed-ready image 24.725 MB/s Quiet echo still fails
Quiet echo <=2 ms over idle, three repeats Old normal 2/3; old compact 1/3 pass Indexed-ready normal 0/3; compact 0/3 pass FAIL; no baseline waiver
10000 numbered 72-column compact history Published 407 KiB reference (context, different implementation) Isolated compact-artifact PSS increments324–360 KiB Below reference; exact search/selection/replay tests pass
Whole-host D128 handoff Unimplemented Explicit real-fixture red case,999 siblings still responsive Unimplemented; not adoption-ready

Full-role idle PSS KiB at 1/10/100/1000 sessions: repeat 0 5004/5016/5120/5960, repeat 1 5008/5016/5120/5964, repeat 2 5012/5016/5116/5960. All 12 two-second idle windows show 0 CPU ticks and 0 native allocations. Full-role image SHA256 a60d56db2d383687b4ab742f2c5d803ca4f9f9f60be3ae8fa7dbcce8b7ac44aa. full-role-idle-rows.json, full-role-idle.log, full-memory-perf.log

Ownership: session 456 B + socket path 86 B + prefix 38 B + ring 64 B =644 B/session. At1000, requested live total 899256 B includes slot spare, indexed readiness, registry, event buffer and queue capacities. Independent allocator validates hash requests 116/816/6416/102416 B at 1/10/100/1000. Requested growth0.852692 KiB/session leaves96.161–104.161 KiB of resident-growth difference across 999 sessions unattributed; allocator/libc/high-water attribution is still open. This closes the prior false equivalence between requested bytes and PSS, not every resident byte. idle-ledger-validated.json, full-memory-perf.log

Separate 2000-pair kernel repeats: global vmalloc23.992/24/24 KiB per PTY pair; scoped kernel charge after epoll/first output2.106/2.124/2.634 KiB/pair. Global slab is noisy. These are different accounting views, not an exact additive replacement for the prior27.9 KiB estimate. ready-idle-perf.log

The completed 7200-active-second soak uses77ecd3026 image 688f6bb9…, not final head. It retains one fixture across <=1740-second lock segments. Later changes have focused/short evidence only. Compact history figures exclude the raw ring and use an isolated larger-history fixture; the 50-terminal raw history fixture gives339.1 KiB/history, not a claim that the shared host's 64 MiB history pool retains 10000 lines in every terminal. soak-summary.json, history-perf.log, balanced-summary.json, ready-balanced.log

Matched geometry repeat:32 events at1000x100 used to materialize in24.500–29.397 ms; destination-cell cap materializes earlier during preparation31.825–39.649 ms. Work moved, not removed from the input path. matched-geometry-brief.json, geometry-after-normal-perf.log

Correction: the attachment URLs in the preceding measurement comment were damaged by formatting. This replaces that comment with intact links and source identifiers. r5 measured delta checkpoint, branch `process-per-user`, head `f0d97cb4ac90c94fbe8f4cf31bafeff937415272`. D81/D128/D268/D270. All numbers below are perf-VM measurements under the exclusive lock; source/image hashes, machine/load and fixture details are in the attached receipts. No default switch. | Item | Earlier evidence | r5 evidence | Status | |---|---|---|---| | Independent full-role idle PSS slope | r3 1.333–1.353 KiB/session | Three repeats: 0.948949–0.956957 KiB/session | Below 1 KiB; fixed host ~5 MiB, shells/kernel additional | | Two-hour settled PSS growth | r3 +176 KiB; prior problem +323 MiB | +204 KiB; 152.526 KiB/h; fd/thread growth0; all 1000 responsive | Memory settles | | Soak peak batch echo p 99 | r3 112.157 ms | 85.940 ms; median batch p 99 11.601 ms; all 661 post-warm batches >5 ms | FAIL; no head-wide two-hour admission | | Balanced bulk throughput, normal feature median | Old image 32.560 MB/s | Indexed-ready image 24.162 MB/s | Regression in this matrix; neutrality not established | | Balanced bulk throughput, compact feature median | Old image 22.106 MB/s | Indexed-ready image 24.725 MB/s | Quiet echo still fails | | Quiet echo <=2 ms over idle, three repeats | Old normal 2/3; old compact 1/3 pass | Indexed-ready normal 0/3; compact 0/3 pass | FAIL; no baseline waiver | | 10000 numbered 72-column compact history | Published 407 KiB reference (context, different implementation) | Isolated compact-artifact PSS increments324–360 KiB | Below reference; exact search/selection/replay tests pass | | Whole-host D128 handoff | Unimplemented | Explicit real-fixture red case,999 siblings still responsive | Unimplemented; not adoption-ready | Full-role idle PSS KiB at 1/10/100/1000 sessions: repeat 0 `5004/5016/5120/5960`, repeat 1 `5008/5016/5120/5964`, repeat 2 `5012/5016/5116/5960`. All 12 two-second idle windows show 0 CPU ticks and 0 native allocations. Full-role image SHA256 `a60d56db2d383687b4ab742f2c5d803ca4f9f9f60be3ae8fa7dbcce8b7ac44aa`. [full-role-idle-rows.json](https://git.kayg.org/attachments/3ef3152c-0b25-41aa-94b4-c1a3e528edb0), [full-role-idle.log](https://git.kayg.org/attachments/fb19733b-fccb-4f0e-a64a-f6288c1bda42), [full-memory-perf.log](https://git.kayg.org/attachments/287adde1-3208-4f5e-9e9c-0fbc72a2a52b) Ownership: session 456 B + socket path 86 B + prefix 38 B + ring 64 B =644 B/session. At1000, requested live total 899256 B includes slot spare, indexed readiness, registry, event buffer and queue capacities. Independent allocator validates hash requests 116/816/6416/102416 B at 1/10/100/1000. Requested growth0.852692 KiB/session leaves96.161–104.161 KiB of resident-growth difference across 999 sessions unattributed; allocator/libc/high-water attribution is still open. This closes the prior false equivalence between requested bytes and PSS, not every resident byte. [idle-ledger-validated.json](https://git.kayg.org/attachments/af4116e1-64d5-46c6-9214-93255b037bdf), [full-memory-perf.log](https://git.kayg.org/attachments/287adde1-3208-4f5e-9e9c-0fbc72a2a52b) Separate 2000-pair kernel repeats: global vmalloc23.992/24/24 KiB per PTY pair; scoped kernel charge after epoll/first output2.106/2.124/2.634 KiB/pair. Global slab is noisy. These are different accounting views, not an exact additive replacement for the prior27.9 KiB estimate. [ready-idle-perf.log](https://git.kayg.org/attachments/ea073702-95c4-4f0e-8334-3422951f7aaf) The completed 7200-active-second soak uses`77ecd3026` image `688f6bb9…`, not final head. It retains one fixture across <=1740-second lock segments. Later changes have focused/short evidence only. Compact history figures exclude the raw ring and use an isolated larger-history fixture; the 50-terminal raw history fixture gives339.1 KiB/history, not a claim that the shared host's 64 MiB history pool retains 10000 lines in every terminal. [soak-summary.json](https://git.kayg.org/attachments/72a16f8f-fa48-4c86-96a3-ae7fc9680ffe), [history-perf.log](https://git.kayg.org/attachments/2e7bccc9-4da7-4fff-a0c1-b485ca75b0a2), [balanced-summary.json](https://git.kayg.org/attachments/a3c67e00-63b9-44c5-8aef-d2201ff2cf7f), [ready-balanced.log](https://git.kayg.org/attachments/eb23f545-4e7c-4721-ab46-09550a41aa81) Matched geometry repeat:32 events at1000x100 used to materialize in24.500–29.397 ms; destination-cell cap materializes earlier during preparation31.825–39.649 ms. Work moved, not removed from the input path. [matched-geometry-brief.json](https://git.kayg.org/attachments/817f9057-6aae-499c-8b62-8163a8b3e947), [geometry-after-normal-perf.log](https://git.kayg.org/attachments/9a7df4c5-9310-4fce-a7e1-a949175590b5)
kayg commented 2026-10-15 08:32:49 +00:00
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r5 remaining latency diagnosis at f0d97cb4 (D270). Diagnostic runs are separate from admission; no percentile is subtracted from the soak result.

Corrected bounded scheduler trace SC2:120-second measured window,30-second warmup, four roles observed, zero trace overruns. Wakeup-to-running p 99/max ms: host5.766/19.146, reader5.134/14.156, sampled light-output shell14.944/29.817, burst shell7.976/8.851. Runnable deschedule p 99/max: host2.802/11.689, reader5.145/18.823. These distributions show scheduling delay but do not establish a complete causal attribution or a software fix. scheduler-chain.json, scheduler-chain-window-fixed.log, scheduler-window-source.txt

Correction to earlier diagnostic attempts: SC0 included the untimed final 1000-session census and must not be used for bounded bottleneck attribution. SC1 did not execute due to a generated-source syntax error; its checks were invalid. SC2 uses explicit first-workload-clock start and last original sample end. The corrected window self-check has a verified failing case followed by 4 passing checks. scheduler-window-red-verified.log, scheduler-window-green-verified.log

PW0 independently fences the original Python socket writes before/after delegation; all 12000 original probes correlate and all writes are unbuffered. For 9000 post 30-second probes, native arrival after socket write has pooled p 99 bounds29.899413–29.904277 ms; peak batch bounds34.052932–34.062733 ms.100 extra passive viewers add no input. This diagnostic adds observer work, is not admission and cannot establish an unavoidable latency floor. Source and all numeric per-probe records attached. passive-wire-source.txt, passive-wire-records.json, passive-wire-perf.log

Owned-fixture scheduling experiments all fail 5 ms: host nice 0/-10/-20 peak settled batch p99=16.933/14.709/16.034 ms; all 1000 shells remain nice0. Separate normal/100us host+reader/100us host-only requested scheduler-slice runs=19.581/22.337/18.852 ms. Existing normal policy/nice remain unchanged. No production scheduling setting adopted. scheduling-experiments.json, priority-matrix.log, slice-matrix.log, slice-source.txt

Full-role lifecycle repeat EV1: daemon restart, shell termination, ignoring shell HUP, foreground child ignoring HUP, live fd exhaustion and startup fd exhaustion all PASS; existing siblings remain typable. Whole-host upgrade explicitly FAILS because the D128 adapter is unimplemented. Initial EV0 was invalid setup (relative paths/missing helper), not a product result; corrected EV1 uses absolute fixture paths and staged helpers. events-valid-samples.log, events-valid-source.txt, review-summary.json

r5 remaining latency diagnosis at `f0d97cb4` (D270). Diagnostic runs are separate from admission; no percentile is subtracted from the soak result. Corrected bounded scheduler trace SC2:120-second measured window,30-second warmup, four roles observed, zero trace overruns. Wakeup-to-running p 99/max ms: host5.766/19.146, reader5.134/14.156, sampled light-output shell14.944/29.817, burst shell7.976/8.851. Runnable deschedule p 99/max: host2.802/11.689, reader5.145/18.823. These distributions show scheduling delay but do not establish a complete causal attribution or a software fix. [scheduler-chain.json](https://git.kayg.org/attachments/760cf28b-c637-4081-a817-cd9279a13c07), [scheduler-chain-window-fixed.log](https://git.kayg.org/attachments/596ecdde-2ea7-4b86-9890-b5bc75de0856), [scheduler-window-source.txt](https://git.kayg.org/attachments/8a95feee-d8fc-4557-9a21-0fd82abe72fd) Correction to earlier diagnostic attempts: SC0 included the untimed final 1000-session census and must not be used for bounded bottleneck attribution. SC1 did not execute due to a generated-source syntax error; its checks were invalid. SC2 uses explicit first-workload-clock start and last original sample end. The corrected window self-check has a verified failing case followed by 4 passing checks. [scheduler-window-red-verified.log](https://git.kayg.org/attachments/ccf66296-0e4b-4a05-9013-1e3d20c766e3), [scheduler-window-green-verified.log](https://git.kayg.org/attachments/ee66376e-0f3b-4891-ad10-945311b8c7a1) PW0 independently fences the original Python socket writes before/after delegation; all 12000 original probes correlate and all writes are unbuffered. For 9000 post 30-second probes, native arrival after socket write has pooled p 99 bounds29.899413–29.904277 ms; peak batch bounds34.052932–34.062733 ms.100 extra passive viewers add no input. This diagnostic adds observer work, is not admission and cannot establish an unavoidable latency floor. Source and all numeric per-probe records attached. [passive-wire-source.txt](https://git.kayg.org/attachments/e1a7e8c8-ebe9-4877-adad-59577ce1d10c), [passive-wire-records.json](https://git.kayg.org/attachments/64932267-9f67-411b-aeff-ff63fff1a107), [passive-wire-perf.log](https://git.kayg.org/attachments/d5ff557f-806f-4c14-b0df-3d00f24b0fe7) Owned-fixture scheduling experiments all fail 5 ms: host nice 0/-10/-20 peak settled batch p99=16.933/14.709/16.034 ms; all 1000 shells remain nice0. Separate normal/100us host+reader/100us host-only requested scheduler-slice runs=19.581/22.337/18.852 ms. Existing normal policy/nice remain unchanged. No production scheduling setting adopted. [scheduling-experiments.json](https://git.kayg.org/attachments/f8d5e86b-bd7a-4150-be52-c7b80bb581fb), [priority-matrix.log](https://git.kayg.org/attachments/4f72579e-2779-44f8-b8f1-2bb1fd308927), [slice-matrix.log](https://git.kayg.org/attachments/fceb8d27-6c13-4f17-97f4-44b679c979b9), [slice-source.txt](https://git.kayg.org/attachments/1eabbde7-3399-49d3-b448-c57761b6e9e2) Full-role lifecycle repeat EV1: daemon restart, shell termination, ignoring shell HUP, foreground child ignoring HUP, live fd exhaustion and startup fd exhaustion all PASS; existing siblings remain typable. Whole-host upgrade explicitly FAILS because the D128 adapter is unimplemented. Initial EV0 was invalid setup (relative paths/missing helper), not a product result; corrected EV1 uses absolute fixture paths and staged helpers. [events-valid-samples.log](https://git.kayg.org/attachments/af5f6746-02c3-4b34-b5a1-6f0ea8c47cf0), [events-valid-source.txt](https://git.kayg.org/attachments/1907cb53-72cf-466d-a8ed-9aebdd06453c), [review-summary.json](https://git.kayg.org/attachments/30b4d9f2-74da-4e3b-92d7-2480cce53d48)
kayg commented 2026-10-15 08:32:55 +00:00
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r5 review checkpoint. Branch process-per-user, head/pushed SHA f0d97cb4ac90c94fbe8f4cf31bafeff937415272. Worktree tracked files clean. No deploy/default switch. Remaining acceptance work: <=5 ms soak echo, D128 whole-host handoff,96–104 KiB resident-growth attribution, and real PAM/person revocation integration. The feature is not adoption-ready. Stopping for the requested delta review; the issue remains open.

Final scripts/verify fast via build-slot, weighted user scope, on this head: exit1. Verbatim final summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

verify-fast-weighted-retry.log, final-gate-summary.log

Static default binary sizes: x86 head 22277392 vs baseline b182529f 22275888 (+1504 B); ARM19705112 vs 19704712 (+400 B). Both branch deltas <=16 KiB. Absolute caps 22204304/19638744 B already fail on that baseline (by 71584/65968 B); head exceeds by 73088/66368 B. Caps unchanged. This is a red gate, not a waiver. default-size-comparison.log

Source checks and whole-workspace tests pass in the final fast run. Earlier saturated-control and renewal-ack server failures are retained in the prior receipts; isolated passes did not waive them. Final full test row passes. Dispatcher skips TypeScript after the static row fails; independent same-head TypeScript checks/tests PASS (191/0 tracer,37/0 protocol). Focused feature gates PASS:151 compact library cases plus 2 real-host reliability cases, fmt/clippy and both minimal static feature images. Full iterate passed at42e5b4ac8. typescript-final.log

Author correctness/bounds/protocol/lifecycle/performance checklist completed with remaining limitations recorded. Owned perf scopes inactive with empty cgroups; local build target removed after final gates (21 GiB reclaimed), evidence retained outside checkout. No owner fixtures or foreign processes changed. author-checklist.txt, perf-cleanup.log

r5 review checkpoint. Branch `process-per-user`, head/pushed SHA `f0d97cb4ac90c94fbe8f4cf31bafeff937415272`. Worktree tracked files clean. No deploy/default switch. Remaining acceptance work: <=5 ms soak echo, D128 whole-host handoff,96–104 KiB resident-growth attribution, and real PAM/person revocation integration. The feature is not adoption-ready. Stopping for the requested delta review; the issue remains open. Final `scripts/verify fast` via build-slot, weighted user scope, on this head: exit1. Verbatim final summary: ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` [verify-fast-weighted-retry.log](https://git.kayg.org/attachments/b4c92746-e287-4659-a88a-b5cf3c4387fc), [final-gate-summary.log](https://git.kayg.org/attachments/fff866be-4a61-44ac-ac5d-4cfda4a34135) Static default binary sizes: x86 head 22277392 vs baseline `b182529f` 22275888 (+1504 B); ARM19705112 vs 19704712 (+400 B). Both branch deltas <=16 KiB. Absolute caps 22204304/19638744 B already fail on that baseline (by 71584/65968 B); head exceeds by 73088/66368 B. Caps unchanged. This is a red gate, not a waiver. [default-size-comparison.log](https://git.kayg.org/attachments/7f5f8146-1442-46e9-ba5e-a8be270f37cf) Source checks and whole-workspace tests pass in the final fast run. Earlier saturated-control and renewal-ack server failures are retained in the prior receipts; isolated passes did not waive them. Final full test row passes. Dispatcher skips TypeScript after the static row fails; independent same-head TypeScript checks/tests PASS (191/0 tracer,37/0 protocol). Focused feature gates PASS:151 compact library cases plus 2 real-host reliability cases, fmt/clippy and both minimal static feature images. Full iterate passed at42e5b4ac8. [typescript-final.log](https://git.kayg.org/attachments/e11d71c2-da99-4e49-b97e-3cb88b8e1691) Author correctness/bounds/protocol/lifecycle/performance checklist completed with remaining limitations recorded. Owned perf scopes inactive with empty cgroups; local build target removed after final gates (21 GiB reclaimed), evidence retained outside checkout. No owner fixtures or foreign processes changed. [author-checklist.txt](https://git.kayg.org/attachments/9df3044d-cdd2-4985-ab36-a4d4a5cc18cf), [perf-cleanup.log](https://git.kayg.org/attachments/242562a1-368c-420b-996f-ec9375390c81)
kayg commented 2026-10-15 08:34:49 +00:00
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Independent review start: review-process-per-user at f0d97cb4ac; merge base with local dev 8e7467c07c. Read #205 history (241 comments; no parent recorded) and author report. Review is confined to this detached-head-derived branch; implementation unchanged, no push/deploy/perf VM. Testing functional correctness of the opt-in host and its shared-code effects; known admission gaps remain distinct from new defects.

Independent review start: review-process-per-user at f0d97cb4ac90c94fbe8f4cf31bafeff937415272; merge base with local dev 8e7467c07cd2ec1668a775a846076b278f68ef38. Read #205 history (241 comments; no parent recorded) and author report. Review is confined to this detached-head-derived branch; implementation unchanged, no push/deploy/perf VM. Testing functional correctness of the opt-in host and its shared-code effects; known admission gaps remain distinct from new defects.
kayg commented 2026-10-15 08:41:55 +00:00
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Review step: inspected the host reactor, native allocation owner/codec, borrowed Output framing, input/peer limits, and exit/retention paths. Bench Python functional tests pass 42/42; matrix tests pass 3/3. Native fidelity probes and clean-head scripts/verify fast are queued through build-slot; all four host slots are currently occupied. No confirmed new finding yet. No performance measurements or implementation edits.

Review step: inspected the host reactor, native allocation owner/codec, borrowed Output framing, input/peer limits, and exit/retention paths. Bench Python functional tests pass 42/42; matrix tests pass 3/3. Native fidelity probes and clean-head scripts/verify fast are queued through build-slot; all four host slots are currently occupied. No confirmed new finding yet. No performance measurements or implementation edits.
kayg commented 2026-10-15 09:02:42 +00:00
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Execution status: functional core checks pass (20 Rust, 42 bench Python, 3 matrix Python); no confirmed new defect yet. Native fidelity probes, full optional shim suite and clean-f0d97cb4a fast gate remain waiting for the four host build slots. Queued since about 10:33 Europe/Berlin; still waiting at 11:02. No slot override or foreign-process changes. Local dev is stale: requested merge base 8e7467c0; origin/dev merge base b182529f isolates the 64 lane files for upstream attribution. Review implementation remains unchanged.

Execution status: functional core checks pass (20 Rust, 42 bench Python, 3 matrix Python); no confirmed new defect yet. Native fidelity probes, full optional shim suite and clean-f0d97cb4a fast gate remain waiting for the four host build slots. Queued since about 10:33 Europe/Berlin; still waiting at 11:02. No slot override or foreign-process changes. Local dev is stale: requested merge base 8e7467c0; origin/dev merge base b182529f isolates the 64 lane files for upstream attribution. Review implementation remains unchanged.
kayg commented 2026-10-15 09:29:58 +00:00
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Review execution: opt-in native checks acquired build slot 4 at 11:27 Europe/Berlin. Clean f0d97cb4a fast gate acquired slot 1 at 11:04. Its Clippy row hit openssl-sys build failures: missing openssl/bio.h, internal/common.h, dependency .d.tmp files and sccache compiler CWD (ENOENT) under process-per-user-review/target/debug/build/openssl-sys-d2d829c0e4d0d016/out/openssl-build/build/src. This is a build failure, not an executed product assertion; no waiver applied. Gate continues through test/static rows. Compiler environment/argv diagnostics were omitted from the retained log. Direct Rust limiter/native-archive diagnostic passed both probes (1536 finite syntax samples plus oversized hyperlink); exact opt-in suite is now running. Inherited ignored-SIGCHLD lifecycle probe remains unconfirmed.

Review execution: opt-in native checks acquired build slot 4 at 11:27 Europe/Berlin. Clean f0d97cb4a fast gate acquired slot 1 at 11:04. Its Clippy row hit openssl-sys build failures: missing openssl/bio.h, internal/common.h, dependency .d.tmp files and sccache compiler CWD (ENOENT) under process-per-user-review/target/debug/build/openssl-sys-d2d829c0e4d0d016/out/openssl-build/build/src. This is a build failure, not an executed product assertion; no waiver applied. Gate continues through test/static rows. Compiler environment/argv diagnostics were omitted from the retained log. Direct Rust limiter/native-archive diagnostic passed both probes (1536 finite syntax samples plus oversized hyperlink); exact opt-in suite is now running. Inherited ignored-SIGCHLD lifecycle probe remains unconfirmed.
kayg commented 2026-10-15 09:34:21 +00:00
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PPU-R1 (P2), test committed locally as 676349ad1c on review-process-per-user. The shared host accepts SIGCHLD=SIG_IGN; two real sessions confirm input, then exit 7 closes its peer without Exited. Its sibling remains responsive. Startup blocks SIGCHLD at user_host.rs:760 without validating/resetting inherited auto-reaping; observe_exit (line 333) cannot recover the status. Rust test review_ignored_child_notifications_do_not_lose_terminal_exit fails with UnexpectedEof (0 passed / 1 failed). Independent same-feature fixture receipt: ready_sessions=2, sigchld_ignored=true, exit_event=missing, sibling_responsive=true. Evidence: ~/.cache/codex-scratch/process-per-user-review/evidence/{feature-review-tests.log,ignored-child-signal.json}. No implementation change or push. Full optional suite and clean-head fast gate are still running.

PPU-R1 (P2), test committed locally as 676349ad1ccb0e3ca169889c6384a56f4df7059c on review-process-per-user. The shared host accepts SIGCHLD=SIG_IGN; two real sessions confirm input, then exit 7 closes its peer without Exited. Its sibling remains responsive. Startup blocks SIGCHLD at user_host.rs:760 without validating/resetting inherited auto-reaping; observe_exit (line 333) cannot recover the status. Rust test review_ignored_child_notifications_do_not_lose_terminal_exit fails with UnexpectedEof (0 passed / 1 failed). Independent same-feature fixture receipt: ready_sessions=2, sigchld_ignored=true, exit_event=missing, sibling_responsive=true. Evidence: ~/.cache/codex-scratch/process-per-user-review/evidence/{feature-review-tests.log,ignored-child-signal.json}. No implementation change or push. Full optional suite and clean-head fast gate are still running.
kayg commented 2026-10-15 09:34:43 +00:00
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PPU-R1 attached receipts: failing Rust regression, same-feature two-session exit/sibling check. Severity remains P2; no P0/P1 confirmed.

PPU-R1 attached receipts: [failing Rust regression](https://git.kayg.org/attachments/5c97d884-b91c-417b-b705-9010afd37f8d), [same-feature two-session exit/sibling check](https://git.kayg.org/attachments/f9e4b96a-2b71-41e4-94ab-9861169357b3). Severity remains P2; no P0/P1 confirmed.
kayg commented 2026-10-15 09:40:41 +00:00
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Review step complete, local head c54e313c77. Added two native-oracle properties: all 256 byte values after six control prefixes (1536 cases), plus an oversized hyperlink exact-or-refused-repaint case. Both pass with process-per-user and compact-history. Existing compact suite: 151 library passed / 21 intentional ignores; remaining detach, public C mouse, real-host reliability and process-descriptor integration targets pass. All-target compact Clippy and fmt pass. The separate new PPU-R1 test remains red and was explicitly filtered from the broad-suite run. No implementation edits or push.

Receipts: feature suite, feature Clippy, compact properties. Default fast gate on clean f0d97cb4a is in static builds. Its initial TMPDIR path-length error passes isolated with the corrected short scratch alias; full weighted retry will use that alias and retain Rust caching.

Review step complete, local head c54e313c775d79d23753be2054b4a81d58847a37. Added two native-oracle properties: all 256 byte values after six control prefixes (1536 cases), plus an oversized hyperlink exact-or-refused-repaint case. Both pass with process-per-user and compact-history. Existing compact suite: 151 library passed / 21 intentional ignores; remaining detach, public C mouse, real-host reliability and process-descriptor integration targets pass. All-target compact Clippy and fmt pass. The separate new PPU-R1 test remains red and was explicitly filtered from the broad-suite run. No implementation edits or push. Receipts: [feature suite](https://git.kayg.org/attachments/01f31203-8ce0-4926-8069-e2dfc4fc3d42), [feature Clippy](https://git.kayg.org/attachments/5dd124d1-7f96-473a-b296-0505a6ae18d8), [compact properties](https://git.kayg.org/attachments/a81032c2-396a-4b9f-9df8-4cdb4e456267). Default fast gate on clean f0d97cb4a is in static builds. Its initial TMPDIR path-length error passes isolated with the corrected short scratch alias; full weighted retry will use that alias and retain Rust caching.
kayg commented 2026-10-15 09:42:14 +00:00
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PPU-R1 also reproduces with compact-history: 0 passed / 1 failed, UnexpectedEof at ppu_reliability.rs:296, specifically the Exited read after both ready markers completed. Exact-profile backtrace. Same local test commit 676349ad; severity P2, no additional finding. Implementation unchanged.

PPU-R1 also reproduces with compact-history: 0 passed / 1 failed, UnexpectedEof at ppu_reliability.rs:296, specifically the Exited read after both ready markers completed. [Exact-profile backtrace](https://git.kayg.org/attachments/ddd503ff-eea4-48cf-a2aa-4f0938b876c5). Same local test commit 676349ad; severity P2, no additional finding. Implementation unchanged.
kayg commented 2026-10-15 10:19:35 +00:00
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First clean-target fast gate completed on f0d97cb4ac (review head c54e313c77). No waiver: Clippy hit missing OpenSSL build files; the test row stopped at the overly long TMPDIR fixture. That exact test passes 1/1 with the corrected short alias. Static sizes independently match the report: x86 22277392 B, ARM 19705112 B, above unchanged caps by 73088/66368 B. Author baseline sizes were not independently rebuilt. Full weighted retry plus TypeScript is queued as one sequential slot, with the short alias, two Cargo jobs and two test threads; Rust caching stays enabled.

Verbatim first-run summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | FAIL (101)   |
| test                      | FAIL (101)   |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Summary receipt, static sizes and attribution limits. Final verdict follows the completed retry. P0 0 / P1 0 / P2 1 / P3 0 so far.

First clean-target fast gate completed on f0d97cb4ac90c94fbe8f4cf31bafeff937415272 (review head c54e313c775d79d23753be2054b4a81d58847a37). No waiver: Clippy hit missing OpenSSL build files; the test row stopped at the overly long TMPDIR fixture. That exact test passes 1/1 with the corrected short alias. Static sizes independently match the report: x86 22277392 B, ARM 19705112 B, above unchanged caps by 73088/66368 B. Author baseline sizes were not independently rebuilt. Full weighted retry plus TypeScript is queued as one sequential slot, with the short alias, two Cargo jobs and two test threads; Rust caching stays enabled. Verbatim first-run summary: ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | FAIL (101) | | test | FAIL (101) | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` [Summary receipt](https://git.kayg.org/attachments/e6b16d62-5793-42dd-a2ba-475392fe4176), [static sizes and attribution limits](https://git.kayg.org/attachments/680ee869-c8fa-4d9d-8238-d2887342ebf1). Final verdict follows the completed retry. P0 0 / P1 0 / P2 1 / P3 0 so far.
kayg commented 2026-10-15 10:40:38 +00:00
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Review state at 12:40 Europe/Berlin: full corrected retry + TypeScript continuation has waited for a build slot since about 12:18; it has not begun (all three output logs remain empty). The remaining dependency is one free host build slot from the existing holders; no product or contract change is needed to proceed. Local head stays c54e313c, P0 0 / P1 0 / P2 1 / P3 0. PPU-R1 test and receipts are committed/attached, both opt-in profiles confirm it, existing compact checks pass. First clean f0 fast run and measured static sizes are attached above. Continuing to wait; no foreign process or lock is changed.

Review state at 12:40 Europe/Berlin: full corrected retry + TypeScript continuation has waited for a build slot since about 12:18; it has not begun (all three output logs remain empty). The remaining dependency is one free host build slot from the existing holders; no product or contract change is needed to proceed. Local head stays c54e313c, P0 0 / P1 0 / P2 1 / P3 0. PPU-R1 test and receipts are committed/attached, both opt-in profiles confirm it, existing compact checks pass. First clean f0 fast run and measured static sizes are attached above. Continuing to wait; no foreign process or lock is changed.
kayg commented 2026-10-15 10:50:58 +00:00
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Verification blocker: the corrected full-fast + TypeScript job has remained alive and queued since about 12:18, with all output logs still empty at 12:50. BUILD_SLOTS=4. Shared slot metadata shows later acquisitions at 12:37:13 and 12:43:29 while this waiter remained queued; the helper polls rather than preserving FIFO order. Needed from the orchestrator: schedule one host build slot for review-process-per-user so the cached retry and TypeScript continuation can finish. I am still waiting, without changing another job's process, slot, or lock. Behavior work is complete at c54e313c; counts P0 0 / P1 0 / P2 1 / P3 0. First-head gate and both measured static sizes are already attached; the final verdict will quote the completed retry.

Verification blocker: the corrected full-fast + TypeScript job has remained alive and queued since about 12:18, with all output logs still empty at 12:50. BUILD_SLOTS=4. Shared slot metadata shows later acquisitions at 12:37:13 and 12:43:29 while this waiter remained queued; the helper polls rather than preserving FIFO order. Needed from the orchestrator: schedule one host build slot for review-process-per-user so the cached retry and TypeScript continuation can finish. I am still waiting, without changing another job's process, slot, or lock. Behavior work is complete at c54e313c; counts P0 0 / P1 0 / P2 1 / P3 0. First-head gate and both measured static sizes are already attached; the final verdict will quote the completed retry.
kayg commented 2026-10-15 11:04:53 +00:00
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Build slot acquired after the recorded wait. Corrected clean-head fast retry is now running at f0d97cb4ac with the short owned TMPDIR; independent TypeScript fast checks follow in the same slot. No gate waiver, source implementation change or push.

Build slot acquired after the recorded wait. Corrected clean-head fast retry is now running at f0d97cb4ac90c94fbe8f4cf31bafeff937415272 with the short owned TMPDIR; independent TypeScript fast checks follow in the same slot. No gate waiver, source implementation change or push.
kayg commented 2026-10-15 11:26:47 +00:00
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Independent review verdict: MERGE (no P0/P1). Counts: P0=0, P1=0, P2=1, P3=0. The P2 is fixed forward under the owner's verdict rule.

Target: f0d97cb4ac. Local review head: c54e313c77. Implementation unchanged; no push or deployment.

PPU-R1 (P2): inherited SIGCHLD=SIG_IGN loses terminal exit status after startup. Two PTYs become ready; exit 7 closes the peer without Exited(7), while the sibling remains responsive. Committed regression review_ignored_child_notifications_do_not_lose_terminal_exit (676349ad1c) fails in both process-per-user and compact-history profiles. Locations: user_host.rs:760/333 and user_host_reactor.rs:486. Failing Rust receipt; independent ready-session evidence; compact repeat.

Supporting tests in c54e313c: 1,536 bounded control inputs and oversized-hyperlink fidelity pass against the pinned native oracle in both profiles. Compact functional suite (explicitly excluding the separately recorded new failing review test) and all-target Clippy pass. Suite; Clippy.

Corrected scripts/verify fast on the clean target head, verbatim:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

1,038 Rust tests passed. The corrected run resolves the earlier native-build error and this review's overlong TMPDIR setup error; no load waiver was used. Static size caps remain the only failed row: x86 22,277,392 bytes (cap 22,204,304; +73,088), ARM 19,705,112 (cap 19,638,744; +66,368); PT_INTERP absent. Head sizes independently match the author's artifacts; baseline deltas were not independently rebuilt. D205 permits justified feature growth; caps were not modified. Full corrected gate; table.

Because the Rust size failure skips the later TypeScript stage, that stage ran independently in the same build slot: exit 0; protocol compiler, frontend compiler/precompression/bundle checks, 191 frontend tests and 37 protocol tests pass (34,463 protocol assertions). TypeScript receipt.

This verdict covers merging the opt-in research feature, not production/default-switch acceptance. Performance claims were not independently remeasured: this brief prohibits the perf VM, and shared-host timings are not performance evidence. The author's latency, whole-host D128 and PAM/person-revocation integration acceptance remains outstanding. No live owner fixtures or other hosts were touched. Review checklist completed for parser bounds, descriptor/UID boundaries, lifecycle, oracle fidelity and contract drift. Issue remains open.

Independent review verdict: MERGE (no P0/P1). Counts: P0=0, P1=0, P2=1, P3=0. The P2 is fixed forward under the owner's verdict rule. Target: f0d97cb4ac90c94fbe8f4cf31bafeff937415272. Local review head: c54e313c775d79d23753be2054b4a81d58847a37. Implementation unchanged; no push or deployment. PPU-R1 (P2): inherited SIGCHLD=SIG_IGN loses terminal exit status after startup. Two PTYs become ready; exit 7 closes the peer without Exited(7), while the sibling remains responsive. Committed regression review_ignored_child_notifications_do_not_lose_terminal_exit (676349ad1ccb0e3ca169889c6384a56f4df7059c) fails in both process-per-user and compact-history profiles. Locations: user_host.rs:760/333 and user_host_reactor.rs:486. [Failing Rust receipt](https://git.kayg.org/attachments/5c97d884-b91c-417b-b705-9010afd37f8d); [independent ready-session evidence](https://git.kayg.org/attachments/f9e4b96a-2b71-41e4-94ab-9861169357b3); [compact repeat](https://git.kayg.org/attachments/ddd503ff-eea4-48cf-a2aa-4f0938b876c5). Supporting tests in c54e313c: 1,536 bounded control inputs and oversized-hyperlink fidelity pass against the pinned native oracle in both profiles. Compact functional suite (explicitly excluding the separately recorded new failing review test) and all-target Clippy pass. [Suite](https://git.kayg.org/attachments/01f31203-8ce0-4926-8069-e2dfc4fc3d42); [Clippy](https://git.kayg.org/attachments/5dd124d1-7f96-473a-b296-0505a6ae18d8). Corrected scripts/verify fast on the clean target head, verbatim: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` 1,038 Rust tests passed. The corrected run resolves the earlier native-build error and this review's overlong TMPDIR setup error; no load waiver was used. Static size caps remain the only failed row: x86 22,277,392 bytes (cap 22,204,304; +73,088), ARM 19,705,112 (cap 19,638,744; +66,368); PT_INTERP absent. Head sizes independently match the author's artifacts; baseline deltas were not independently rebuilt. D205 permits justified feature growth; caps were not modified. [Full corrected gate](https://git.kayg.org/attachments/a0287c28-e529-4bd0-9b16-0cfe1d8545bd); [table](https://git.kayg.org/attachments/35fabeae-caf4-4c2d-b8cf-42039104410b). Because the Rust size failure skips the later TypeScript stage, that stage ran independently in the same build slot: exit 0; protocol compiler, frontend compiler/precompression/bundle checks, 191 frontend tests and 37 protocol tests pass (34,463 protocol assertions). [TypeScript receipt](https://git.kayg.org/attachments/105feea1-5ddc-4468-bd2a-cd8c03e31c2e). This verdict covers merging the opt-in research feature, not production/default-switch acceptance. Performance claims were not independently remeasured: this brief prohibits the perf VM, and shared-host timings are not performance evidence. The author's latency, whole-host D128 and PAM/person-revocation integration acceptance remains outstanding. No live owner fixtures or other hosts were touched. Review checklist completed for parser bounds, descriptor/UID boundaries, lifecycle, oracle fidelity and contract drift. Issue remains open.
kayg commented 2026-10-15 11:29:50 +00:00
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Continuation r6 start: process-per-user at f0d97cb4ac; task base b182529fcc. Read all 254 comments on #205; no parent recorded. Fix PPU-R1 from 676349ad1 first, then attribute slow batches with numeric stage/scheduler receipts and close D128 whole-host replacement. Default unchanged; no deploy. Heavy checks use build-slot; performance only on 10.69.69.208 under short segmented locks. Existing untracked scripts/pycache/ left untouched.

Continuation r6 start: process-per-user at f0d97cb4ac90c94fbe8f4cf31bafeff937415272; task base b182529fcc38ed65c53ad323b55e444beaa4e2a7. Read all 254 comments on #205; no parent recorded. Fix PPU-R1 from 676349ad1 first, then attribute slow batches with numeric stage/scheduler receipts and close D128 whole-host replacement. Default unchanged; no deploy. Heavy checks use build-slot; performance only on 10.69.69.208 under short segmented locks. Existing untracked scripts/__pycache__/ left untouched.
kayg commented 2026-10-15 11:37:55 +00:00
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PPU-R1 independently reproduced on retained pre-fix static image: 2 ready sessions, exit 7 has no Exited event, sibling remains responsive. Functional fixture, no performance claim. Receipt. Imported 676349ad1 without committing its red state. Added a stricter default-disposition check and custom handler with SA_NOCLDWAIT installed inside standalone main (exec would otherwise clear a caught handler). Proposed/fixed boundary: user_host.rs blocks SIGCHLD after validating one thread; pty.rs replaces the complete action with SIG_DFL/empty flags before creating any PTYs. Both opt-in suites and clippy are queued through build-slot.

PPU-R1 independently reproduced on retained pre-fix static image: 2 ready sessions, exit 7 has no Exited event, sibling remains responsive. Functional fixture, no performance claim. [Receipt](https://git.kayg.org/attachments/a6734815-ae68-4a43-bafd-00d623a937d3). Imported 676349ad1 without committing its red state. Added a stricter default-disposition check and custom handler with SA_NOCLDWAIT installed inside standalone main (exec would otherwise clear a caught handler). Proposed/fixed boundary: user_host.rs blocks SIGCHLD after validating one thread; pty.rs replaces the complete action with SIG_DFL/empty flags before creating any PTYs. Both opt-in suites and clippy are queued through build-slot.
kayg commented 2026-10-15 11:50:34 +00:00
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r6 latency diagnostics on perf VM (4 vCPU, Linux 6.12.111, unchanged 1000-session mix, interval 10 s, 180 s / warmup 120 s; retained 68c9abf95 implementation image 4dedd088...). No admission claim. Syscall/delivery capture: 1800/1800 probes correlated, zero overruns, 1000/1000 final survivors; settled peak batch p99 14.752640 ms. Across seven settled probe windows, host runnable-off-CPU overlap is 2.384–5.993 ms; host-running upper estimate 3.110–5.042 ms. Those cohort bounds are not per-probe stage attribution or subtraction. Numeric trace, cohort off-CPU.

A second bounded trace maps all 100 probed shells plus host/reader after 100 numeric PID setup commands. Exact timed window excludes the final census; zero overruns, all 102 roles recorded. Settled peak batch p99 18.849800 ms; host wake-to-run p99/max 5.437/15.695 ms; reader 5.344/9.687; session 910 shell 15.683/15.683. Scheduling contributes in shells as well as host; this does not certify a sole root cause. 102-role receipt. Both owned scopes are inactive/empty. A shell-placement comparison is diagnostic only, with no production setting adopted.

The SIGCHLD gate has waited for build-slot since 13:32 Europe/Berlin; its log is still empty at 13:50. Slots 1/3/4 have later acquisitions at 13:39:30/13:32:23/13:34:49 while this invocation stays queued. Continuing independent diagnosis without bypassing slots or changing another job. Bounded numeric per-stage tracing is prepared behind a separate non-default host-diagnostics feature; not yet compiled or measured.

r6 latency diagnostics on perf VM (4 vCPU, Linux 6.12.111, unchanged 1000-session mix, interval 10 s, 180 s / warmup 120 s; retained 68c9abf95 implementation image 4dedd088...). No admission claim. Syscall/delivery capture: 1800/1800 probes correlated, zero overruns, 1000/1000 final survivors; settled peak batch p99 14.752640 ms. Across seven settled probe windows, host runnable-off-CPU overlap is 2.384–5.993 ms; host-running upper estimate 3.110–5.042 ms. Those cohort bounds are not per-probe stage attribution or subtraction. [Numeric trace](https://git.kayg.org/attachments/16c1d18b-2617-4158-90fd-0a9485ff602a), [cohort off-CPU](https://git.kayg.org/attachments/eeb25273-0d4c-4129-9d78-b672a35903f2). A second bounded trace maps all 100 probed shells plus host/reader after 100 numeric PID setup commands. Exact timed window excludes the final census; zero overruns, all 102 roles recorded. Settled peak batch p99 18.849800 ms; host wake-to-run p99/max 5.437/15.695 ms; reader 5.344/9.687; session 910 shell 15.683/15.683. Scheduling contributes in shells as well as host; this does not certify a sole root cause. [102-role receipt](https://git.kayg.org/attachments/2f447234-e992-4f72-bbed-88910472ecc4). Both owned scopes are inactive/empty. A shell-placement comparison is diagnostic only, with no production setting adopted. The SIGCHLD gate has waited for build-slot since 13:32 Europe/Berlin; its log is still empty at 13:50. Slots 1/3/4 have later acquisitions at 13:39:30/13:32:23/13:34:49 while this invocation stays queued. Continuing independent diagnosis without bypassing slots or changing another job. Bounded numeric per-stage tracing is prepared behind a separate non-default host-diagnostics feature; not yet compiled or measured.
kayg commented 2026-10-15 12:10:24 +00:00
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r6 shell-side numeric profile: selected owned light shell 950, original 1000-session workload/cadence, perf VM lock, 180 s plus the untimed survivor census. Zero overruns; all 1000 sessions responsive. Every successful input read was exactly 1 requested/returned byte: 11508 read calls / 11508 bytes; 16108 pselect6 calls. Shell wake-to-run p99/max 17.979/24.315 ms. Settled peak batch echo p99 19.692 ms. Initial VM load 3.52/1.71/1.05. This shows that the command-confirmation oracle includes interactive per-character shell work; it does not establish the sole cause or permit subtracting those costs. Sanitized syscall histogram.

A separate owned-shell placement diagnostic also fails: seven settled batch p99 values 8.240/7.106/10.203/17.005/10.014/9.843/9.141 ms, 1000/1000 survivors, zero fd/thread growth. No placement or priority setting adopted.

Per-stage code now records actual per-writer credits at Inputs::advance, complete encoded-frame writes (including partial-write cursors), VT boundaries and frame construction under host-diagnostics only. Causal byte-range/descriptor matching has 7 Python checks passing; storage/serialization tests pass in the standalone Rust module. Full crate compilation/clippy remains queued through build-slot; no after-fix latency or adoption claim.

r6 shell-side numeric profile: selected owned light shell 950, original 1000-session workload/cadence, perf VM lock, 180 s plus the untimed survivor census. Zero overruns; all 1000 sessions responsive. Every successful input read was exactly 1 requested/returned byte: 11508 read calls / 11508 bytes; 16108 pselect6 calls. Shell wake-to-run p99/max 17.979/24.315 ms. Settled peak batch echo p99 19.692 ms. Initial VM load 3.52/1.71/1.05. This shows that the command-confirmation oracle includes interactive per-character shell work; it does not establish the sole cause or permit subtracting those costs. [Sanitized syscall histogram](https://git.kayg.org/attachments/db630ef2-99e3-4080-a429-f00dbcaba3d3). A separate owned-shell placement diagnostic also fails: seven settled batch p99 values 8.240/7.106/10.203/17.005/10.014/9.843/9.141 ms, 1000/1000 survivors, zero fd/thread growth. No placement or priority setting adopted. Per-stage code now records actual per-writer credits at Inputs::advance, complete encoded-frame writes (including partial-write cursors), VT boundaries and frame construction under host-diagnostics only. Causal byte-range/descriptor matching has 7 Python checks passing; storage/serialization tests pass in the standalone Rust module. Full crate compilation/clippy remains queued through build-slot; no after-fix latency or adoption claim.
kayg commented 2026-10-15 12:17:22 +00:00
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Validation resource blocker at 14:17 Europe/Berlin: the same build-slot invocation has waited since 13:32 (45 minutes); child-gate.log is still empty. Later slot acquisitions have continued while this waiter stayed queued. Current holders: addhost-instant (slot1, 13:39:30), app-windows-ship (slot2, 13:57:41), terminal-links-review (slot3, 14:01:21), edge-autoupdate-review (slot4, 14:03:56). Needed from orchestrator scheduling: one host build slot so SIGCHLD/optional-feature tests, clippy and the stage artifact can run. No wrapper, priority list, lock or foreign process changed; continuing to wait.

Current tracked/untracked source is preserved in this 55,114-byte patch. It is unvalidated WIP, not a completed commit or acceptance claim. Base/head remains f0d97cb4ac. Full fast gate and default size delta have not run in r6. All four executed perf diagnostic scopes are inactive with empty ControlGroup; their numeric evidence is already attached. No default change or deploy.

Validation resource blocker at 14:17 Europe/Berlin: the same build-slot invocation has waited since 13:32 (45 minutes); child-gate.log is still empty. Later slot acquisitions have continued while this waiter stayed queued. Current holders: addhost-instant (slot1, 13:39:30), app-windows-ship (slot2, 13:57:41), terminal-links-review (slot3, 14:01:21), edge-autoupdate-review (slot4, 14:03:56). Needed from orchestrator scheduling: one host build slot so SIGCHLD/optional-feature tests, clippy and the stage artifact can run. No wrapper, priority list, lock or foreign process changed; continuing to wait. Current tracked/untracked source is preserved in this [55,114-byte patch](https://git.kayg.org/attachments/c9fb5b2a-42de-46e4-a0bc-3fabe3f4cb84). It is unvalidated WIP, not a completed commit or acceptance claim. Base/head remains f0d97cb4ac90c94fbe8f4cf31bafeff937415272. Full fast gate and default size delta have not run in r6. All four executed perf diagnostic scopes are inactive with empty ControlGroup; their numeric evidence is already attached. No default change or deploy.
kayg commented 2026-10-15 12:33:08 +00:00
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Step completed and pushed: 733ed6920d, private trace ownership refusal. A verified failing filesystem test showed close() overwriting a preexisting instance after mkdir refused the name. Cleanup now requires successful ownership; 3 Python attribution checks, Rust fmt and diff checks pass. No product/runtime workload or budget change. Red, green.

Separate SIGCHLD boundary check: the verbatim new reset function compiled against the existing pinned Nix dependency and two standalone real-PTY cases both return waitable status 7 (inherited ignored and custom SA_NOCLDWAIT). This does not substitute for the queued full shared-host fixture or touched-crate Clippy. Boundary output.

At 14:32 Europe/Berlin, Rust gate output is still empty: original queue from 13:32, own queued wrapper retired/requeued at about 14:23 without any build starting. Other jobs/locks/slot settings untouched. SIGCHLD, collector and driver source remain uncommitted pending that gate; acceptance, D128 and final fast remain open.

Step completed and pushed: 733ed6920d3366e05185cb4a021907c60a38ce9b, private trace ownership refusal. A verified failing filesystem test showed close() overwriting a preexisting instance after mkdir refused the name. Cleanup now requires successful ownership; 3 Python attribution checks, Rust fmt and diff checks pass. No product/runtime workload or budget change. [Red](https://git.kayg.org/attachments/c4085ebb-b942-497d-b1e2-c1e1b77f2a09), [green](https://git.kayg.org/attachments/790618fa-a767-483f-ae5b-0c2ca61dca01). Separate SIGCHLD boundary check: the verbatim new reset function compiled against the existing pinned Nix dependency and two standalone real-PTY cases both return waitable status 7 (inherited ignored and custom SA_NOCLDWAIT). This does not substitute for the queued full shared-host fixture or touched-crate Clippy. [Boundary output](https://git.kayg.org/attachments/a89ce2c9-9a4c-4fe9-b376-215c9293282a). At 14:32 Europe/Berlin, Rust gate output is still empty: original queue from 13:32, own queued wrapper retired/requeued at about 14:23 without any build starting. Other jobs/locks/slot settings untouched. SIGCHLD, collector and driver source remain uncommitted pending that gate; acceptance, D128 and final fast remain open.
kayg commented 2026-10-15 13:05:24 +00:00
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Completed inherited child-disposition fix at 2062dcbb1c (pushed). Imported the review regression and reset SIGCHLD to default before creating PTYs; both inherited ignore and an inherited custom handler with SA_NOCLDWAIT are covered. Real-host reliability tests pass 4/4 with process-per-user and 4/4 with compact-history. Tests: receipt. That transcript ends in a documentation lint; corrected it and reran touched-crate all-target compact clippy successfully: receipt. fmt also passes.

Stage diagnostics remain non-default and uncommitted pending their full slice gate; their real-host numeric-only flush integration test passes: receipt. Release measurement images are queued through build-slot. No new latency acceptance claim; D128 remains open.

Completed inherited child-disposition fix at 2062dcbb1c0ca5e87f9dfbf2686bec1cb458b3e4 (pushed). Imported the review regression and reset SIGCHLD to default before creating PTYs; both inherited ignore and an inherited custom handler with SA_NOCLDWAIT are covered. Real-host reliability tests pass 4/4 with process-per-user and 4/4 with compact-history. Tests: [receipt](https://git.kayg.org/attachments/d10931e0-9b05-4fc8-bbbe-7fb7f615ccaa). That transcript ends in a documentation lint; corrected it and reran touched-crate all-target compact clippy successfully: [receipt](https://git.kayg.org/attachments/dd3bd7e4-8448-4c65-9ca5-96a1248af8a1). fmt also passes. Stage diagnostics remain non-default and uncommitted pending their full slice gate; their real-host numeric-only flush integration test passes: [receipt](https://git.kayg.org/attachments/572f45d4-e532-44b9-ab28-e81305f2f2ab). Release measurement images are queued through build-slot. No new latency acceptance claim; D128 remains open.
kayg commented 2026-10-15 13:09:57 +00:00
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Diagnostic tooling steps completed: 42a506318 (separate-process numeric reader, 2 real-process tests), aad9eaca5 (original probe range capture, 5 checks), 036b27fc (causal stage correlation, 6 checks). Each module is a separate commit; all are pushed. No workload commands, cadence, thresholds or default runtime changed. Matching requires writer/input range, PTY output range and the exact viewer's complete frame; missing/dropped records fail. The driver validates the private format before SIGUSR1 and closes its scheduler instance after a lost final fence. These remain diagnostic-only and are not admission evidence.

Rust collector slice and release images are still waiting in build-slot (queued about 14:56 Europe/Berlin; log empty at 15:10). The already completed functional stage-flush test and cached touched-crate clippy pass; full library/profile gate remains pending.

Diagnostic tooling steps completed: 42a506318 (separate-process numeric reader, 2 real-process tests), aad9eaca5 (original probe range capture, 5 checks), 036b27fc (causal stage correlation, 6 checks). Each module is a separate commit; all are pushed. No workload commands, cadence, thresholds or default runtime changed. Matching requires writer/input range, PTY output range and the exact viewer's complete frame; missing/dropped records fail. The driver validates the private format before SIGUSR1 and closes its scheduler instance after a lost final fence. These remain diagnostic-only and are not admission evidence. Rust collector slice and release images are still waiting in build-slot (queued about 14:56 Europe/Berlin; log empty at 15:10). The already completed functional stage-flush test and cached touched-crate clippy pass; full library/profile gate remains pending.
kayg commented 2026-10-15 13:13:52 +00:00
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Additional scheduler diagnosis (not adoption or admission): set SCHED_BATCH only on the ten owned bulk-shell PIDs in a fresh original-workload fixture, after the same 100 numeric PID setup commands as the scheduler-chain profile. Perf VM, 180 s / warmup 120 s, 1000 sessions. Seven settled batch p99 values: 8.014/7.134/9.639/9.783/14.376/8.675/8.837 ms; still fails 5 ms. 1000/1000 survivors, fd/thread growth 0. No runtime scheduler policy adopted. Receipt.

The initial bt0 diagnostic failed before the timed workload because its PID sideband path was relative; bt1 used absolute paths. Both owned scopes are inactive with empty ControlGroup. The original workload is unchanged. Stage collection now marks its own synchronous dump span to avoid attributing recorder I/O to the uninstrumented reactor; its release artifact remains queued.

Additional scheduler diagnosis (not adoption or admission): set SCHED_BATCH only on the ten owned bulk-shell PIDs in a fresh original-workload fixture, after the same 100 numeric PID setup commands as the scheduler-chain profile. Perf VM, 180 s / warmup 120 s, 1000 sessions. Seven settled batch p99 values: 8.014/7.134/9.639/9.783/14.376/8.675/8.837 ms; still fails 5 ms. 1000/1000 survivors, fd/thread growth 0. No runtime scheduler policy adopted. [Receipt](https://git.kayg.org/attachments/61190ff5-7d92-42a3-b181-5a439a829e0e). The initial bt0 diagnostic failed before the timed workload because its PID sideband path was relative; bt1 used absolute paths. Both owned scopes are inactive with empty ControlGroup. The original workload is unchanged. Stage collection now marks its own synchronous dump span to avoid attributing recorder I/O to the uninstrumented reactor; its release artifact remains queued.
kayg commented 2026-10-15 13:18:38 +00:00
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Collector step committed/pushed at 4824a175e; documentation at d1b7689fb. host-diagnostics is a separate non-default feature with 65,536 numeric records, explicit overflow, actual per-writer partial credits and complete socket-frame boundaries. Diagnostic flushes mark their own synchronous I/O span. No terminal bytes, new dependencies or default feature changes.

Narrow cached checks completed while the heavy wrapper remained queued: shim all-target clippy, minimal CLI all-target clippy, fmt, real-host flush test, 2 numeric bound/serialization tests, partial-writer credit test. Wider profile/library checks and static images are still queued through build-slot, not claimed green. No final fast/size result yet.

Next independent diagnostic compares the same original shell oracle through 1000 independent shims using the retained image. Its resource rows cover only the first shim and are explicitly not aggregate evidence; only latency/functional survival are compared. D128 remains unimplemented.

Collector step committed/pushed at 4824a175e; documentation at d1b7689fb. host-diagnostics is a separate non-default feature with 65,536 numeric records, explicit overflow, actual per-writer partial credits and complete socket-frame boundaries. Diagnostic flushes mark their own synchronous I/O span. No terminal bytes, new dependencies or default feature changes. Narrow cached checks completed while the heavy wrapper remained queued: [shim all-target clippy](https://git.kayg.org/attachments/9ba48cdf-6f13-461f-8a26-2789bea972fd), [minimal CLI all-target clippy](https://git.kayg.org/attachments/2ac66d1c-5ad5-41f1-b781-77f89f3f52bc), fmt, [real-host flush test](https://git.kayg.org/attachments/91bf3ba1-014e-46cc-b16c-b732bca4d6d2), [2 numeric bound/serialization tests](https://git.kayg.org/attachments/a3189cf5-7b92-4b8d-8a8e-6b1fd8e917b3), [partial-writer credit test](https://git.kayg.org/attachments/5d22e387-9150-4626-bb36-ed4c11e4b6f5). Wider profile/library checks and static images are still queued through build-slot, not claimed green. No final fast/size result yet. Next independent diagnostic compares the same original shell oracle through 1000 independent shims using the retained image. Its resource rows cover only the first shim and are explicitly not aggregate evidence; only latency/functional survival are compared. D128 remains unimplemented.
kayg commented 2026-10-15 13:25:33 +00:00
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Independent-shim comparison, same retained image 4dedd088..., same original Peer/wire/shell commands and mix/cadence: 1000 independent shim processes instead of one shared host. Perf VM, 180 s / warmup 120 s, interval 10 s, initial load 0.08/0.21/0.31. Settled batch p99 values 9.515/9.769/28.535/12.777/10.589/17.527/17.190 ms; 1000/1000 survivors. Also fails 5 ms. This is evidence that a common path contributes, not a waiver or proof of the sole cause. Resource rows deliberately sample only the first shim and are not aggregate memory/CPU evidence. Numeric receipt, exact diagnostic adapter. The owned scope is inactive/empty; all captured own shims and shells were retired.

Diagnostic model Peak settled batch p99 Survivors Admission
Shared host + syscall/delivery trace (b0) 14.753 ms 1000/1000 no
Shared host + bulk-shell batch scheduling (bt1) 14.376 ms 1000/1000 no
Independent shims (is0) 28.535 ms 1000/1000 no

Separate collector bound fix committed/pushed at a56856be6: repeated enable with one retained record grew capacity from 65,536 to 65,537. Reserve only the remaining count; keep records intact. Failing test, passing test. fmt and touched-crate clippy pass. Static stage image still waiting in build-slot; D128 and final fast/size remain open.

Independent-shim comparison, same retained image 4dedd088..., same original Peer/wire/shell commands and mix/cadence: 1000 independent shim processes instead of one shared host. Perf VM, 180 s / warmup 120 s, interval 10 s, initial load 0.08/0.21/0.31. Settled batch p99 values 9.515/9.769/28.535/12.777/10.589/17.527/17.190 ms; 1000/1000 survivors. Also fails 5 ms. This is evidence that a common path contributes, not a waiver or proof of the sole cause. Resource rows deliberately sample only the first shim and are not aggregate memory/CPU evidence. [Numeric receipt](https://git.kayg.org/attachments/c2f8e1cd-1abf-491d-a0b0-f064fa8c005a), [exact diagnostic adapter](https://git.kayg.org/attachments/54f0d8ed-8660-4d4b-80da-001ce380e91e). The owned scope is inactive/empty; all captured own shims and shells were retired. | Diagnostic model | Peak settled batch p99 | Survivors | Admission | | --- | ---: | ---: | --- | | Shared host + syscall/delivery trace (b0) | 14.753 ms | 1000/1000 | no | | Shared host + bulk-shell batch scheduling (bt1) | 14.376 ms | 1000/1000 | no | | Independent shims (is0) | 28.535 ms | 1000/1000 | no | Separate collector bound fix committed/pushed at a56856be6: repeated enable with one retained record grew capacity from 65,536 to 65,537. Reserve only the remaining count; keep records intact. [Failing test](https://git.kayg.org/attachments/7ebdcd63-accb-48e9-9648-35300f497b47), [passing test](https://git.kayg.org/attachments/7304118b-e3b3-4c88-a2f8-cb44a87352ec). fmt and touched-crate clippy pass. Static stage image still waiting in build-slot; D128 and final fast/size remain open.
kayg commented 2026-10-15 13:44:08 +00:00
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Stage diagnosis completed on perf VM with an explicitly non-release artifact: cached GNU dev-profile shim (Rust unoptimized, native ReleaseSafe), small opt-level=2 launcher, source a56856be6. Reused the existing native archive; no heavy build bypass. This is diagnostic only, not release attribution/admission. Original 1000-session workload, 180 s / warmup 120 s / interval 10 s. 1800/1800 probes correlated, 280139 numeric records, zero drops/overruns; 1000 survivors. Owned scope inactive/empty. Summary, raw receipts, exact launcher/build hashes and scheduler analysis.

700 settled probes: p99 ingress 9.850 ms; accepted-input queue 0.401 ms; PTY-write to PTY-read 23.709 ms; parse 0.0355 ms; parse-to-frame-start 0.0256 ms; frame construction 0.00428 ms; reader delay lower/upper 14.279/14.283 ms. These are separate distributions and cannot be added or subtracted from the admission result. No timed probe overlaps a diagnostic dump; maximum dump span 50.588 ms is retained in the receipt.

Worst individual probe (session921/batch11, 34.472 ms): ingress5.867 ms, written-to-read24.524 ms, parse0.0064 ms, frame build0.0009 ms, reader lower4.046 ms. During its written-to-read window the host is running11.555 ms, runnable off-CPU8.315 ms and sleeping4.654 ms (no unknown interval). 83 other parses total0.924 ms and 83 frame builds0.119 ms in that window. This does not attribute all running time or establish the release root cause; shipping-profile repeat is next.

Build-slot acquired at 15:41:29 Europe/Berlin after the queue. First compact library profile passes151 tests/21 ignored; diagnostic profile is running, then real-host integration, CLI clippy and static diagnostic/uninstrumented images. No final fast/size claim yet; D128 unimplemented.

Separate diagnostic cleanup fix 1b83b49a3 committed/pushed: a failed periodic signal raised before the final-fence guard and skipped private scheduler close. Failing regression, all6 driver tests pass; fmt passes. Original workload and thresholds unchanged.

Stage diagnosis completed on perf VM with an explicitly non-release artifact: cached GNU dev-profile shim (Rust unoptimized, native ReleaseSafe), small opt-level=2 launcher, source a56856be6. Reused the existing native archive; no heavy build bypass. This is diagnostic only, not release attribution/admission. Original 1000-session workload, 180 s / warmup 120 s / interval 10 s. 1800/1800 probes correlated, 280139 numeric records, zero drops/overruns; 1000 survivors. Owned scope inactive/empty. [Summary](https://git.kayg.org/attachments/2811b344-761a-411e-a4d0-0a7c10d95bc8), [raw receipts, exact launcher/build hashes and scheduler analysis](https://git.kayg.org/attachments/1609c52c-acef-4598-a1d8-d473840f72e9). 700 settled probes: p99 ingress 9.850 ms; accepted-input queue 0.401 ms; PTY-write to PTY-read 23.709 ms; parse 0.0355 ms; parse-to-frame-start 0.0256 ms; frame construction 0.00428 ms; reader delay lower/upper 14.279/14.283 ms. These are separate distributions and cannot be added or subtracted from the admission result. No timed probe overlaps a diagnostic dump; maximum dump span 50.588 ms is retained in the receipt. Worst individual probe (session921/batch11, 34.472 ms): ingress5.867 ms, written-to-read24.524 ms, parse0.0064 ms, frame build0.0009 ms, reader lower4.046 ms. During its written-to-read window the host is running11.555 ms, runnable off-CPU8.315 ms and sleeping4.654 ms (no unknown interval). 83 other parses total0.924 ms and 83 frame builds0.119 ms in that window. This does not attribute all running time or establish the release root cause; shipping-profile repeat is next. Build-slot acquired at 15:41:29 Europe/Berlin after the queue. First compact library profile passes151 tests/21 ignored; diagnostic profile is running, then real-host integration, CLI clippy and static diagnostic/uninstrumented images. No final fast/size claim yet; D128 unimplemented. Separate diagnostic cleanup fix 1b83b49a3 committed/pushed: a failed periodic signal raised before the final-fence guard and skipped private scheduler close. [Failing regression](https://git.kayg.org/attachments/ad9adc1f-77ef-46a2-91ab-201b3ff86788), [all6 driver tests pass](https://git.kayg.org/attachments/5604fe31-f117-4abf-b8ea-54f1d90a9125); fmt passes. Original workload and thresholds unchanged.
kayg commented 2026-10-15 13:51:52 +00:00
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Wider optional-feature milestone passes through build-slot at head 1b83b49a3: compact library151 passed/21 ignored; diagnostic+compact155 passed/21 ignored; real-host reliability5/5 passed; minimal CLI all-target clippy and fmt pass. Both static images built. Verbatim gate.

Static musl minimal CLI: uninstrumented process-per-user 2524832 bytes, SHA256 2971f7d43bed8bc9d723fe534ab0840777f58ec03db07fe49d452fa95e4d5842; diagnostic image2537736 bytes, SHA256 32978af475e7773460485b6c95f9b605435dc48d893d9ac052783b4d3e5fd4ac (diagnostic-only +12904 bytes). These are opt-in minimal builds, not the final default-image size delta. Both remote copies match.

Shipping-profile stage repeat ds0 is waiting for the perf lock; original1000-session workload/cadence,180s/warmup120s, same thresholds. scripts/verify iterate is running through the sole build-slot wrapper. Short owned scratch alias p205r6 points into this job's cache/t for Unix socket path limits. Final fast/default-size check and D128 remain outstanding. No default change or deploy.

Wider optional-feature milestone passes through build-slot at head 1b83b49a3: compact library151 passed/21 ignored; diagnostic+compact155 passed/21 ignored; real-host reliability5/5 passed; minimal CLI all-target clippy and fmt pass. Both static images built. [Verbatim gate](https://git.kayg.org/attachments/eb32f349-5994-4ec0-a575-cd0df8580d4c). Static musl minimal CLI: uninstrumented process-per-user 2524832 bytes, SHA256 2971f7d43bed8bc9d723fe534ab0840777f58ec03db07fe49d452fa95e4d5842; diagnostic image2537736 bytes, SHA256 32978af475e7773460485b6c95f9b605435dc48d893d9ac052783b4d3e5fd4ac (diagnostic-only +12904 bytes). These are opt-in minimal builds, not the final default-image size delta. Both remote copies match. Shipping-profile stage repeat ds0 is waiting for the perf lock; original1000-session workload/cadence,180s/warmup120s, same thresholds. scripts/verify iterate is running through the sole build-slot wrapper. Short owned scratch alias p205r6 points into this job's cache/t for Unix socket path limits. Final fast/default-size check and D128 remain outstanding. No default change or deploy.
kayg commented 2026-10-15 13:56:48 +00:00
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First iterate at head1b83b49a3 failed in seven restart installation-path tests: my short scratch alias p205r6 was a symlink. The security boundary correctly refused it, and /proc/self/exe resolved to the canonical long path rather than the alias expected by the fixture. All other completed Rust rows passed. Verbatim failed gate.

No product fix or waiver. After the wrapper exited I verified the alias pointed only to this job's cache/t, unlinked that owned symlink and created a mode0700 canonical run-owned directory at the same short path, with a private s child. Requeued scripts/verify iterate through the sole build-slot wrapper; TMPDIR and INFRATERNAL_TEST_STATE_ROOT use that real directory. No foreign process or owner fixture touched. ds0 release stage profiling is active under the perf lock.

First iterate at head1b83b49a3 failed in seven restart installation-path tests: my short scratch alias p205r6 was a symlink. The security boundary correctly refused it, and /proc/self/exe resolved to the canonical long path rather than the alias expected by the fixture. All other completed Rust rows passed. [Verbatim failed gate](https://git.kayg.org/attachments/cc77d75e-dbce-4278-b7c5-0abd184ab86f). No product fix or waiver. After the wrapper exited I verified the alias pointed only to this job's cache/t, unlinked that owned symlink and created a mode0700 canonical run-owned directory at the same short path, with a private s child. Requeued scripts/verify iterate through the sole build-slot wrapper; TMPDIR and INFRATERNAL_TEST_STATE_ROOT use that real directory. No foreign process or owner fixture touched. ds0 release stage profiling is active under the perf lock.
kayg commented 2026-10-15 14:04:27 +00:00
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Shipping-profile numeric stage repeat ds0 completed (static musl Rust release/native ReleaseFast, source1b83b49a3, diagnostic feature only). Original1000-session mix/cadence,180s/warmup120s. 1800/1800 correlated probes,300583 stage records, zero drops/overruns,1000 survivors; owned scope inactive/empty. Summary, raw receipts, build hashes and analysis. Diagnostic only: not admission, no subtraction.

700 settled probes: p99 PTY read→complete socket write0.032521ms (max0.412628); parse0.016768ms; frame build0.000456ms. Ingress p999.267873ms; written→read13.184820ms; reader-delay lower/upper11.099551/11.101876ms. Separate distributions, not additive. Seven batch p99 values10.560/12.981/17.201/9.085/12.571/13.146/15.233ms. None of the700 probes overlaps a diagnostic dump (maximum dump13.326ms retained).

Worst probe session902/batch13: total17.340ms, ingress0.490ms, input queue0.0034ms, PTY written→read13.468ms, read→socket0.0097ms, reader lower3.356ms. During written→read the host runs2.846ms, waits runnable8.704ms and sleeps1.918ms, with zero unknown interval. This identifies scheduling as a major component in that batch, not a sole root cause or justification to change the5ms gate. The joint host/reader/all100 probed-shell scheduler capture js0 is queued to attribute the same intervals across processes. No runtime priority or default change adopted. Corrected canonical-path iterate is queued through build-slot; final fast/default size and D128 remain open.

Shipping-profile numeric stage repeat ds0 completed (static musl Rust release/native ReleaseFast, source1b83b49a3, diagnostic feature only). Original1000-session mix/cadence,180s/warmup120s. 1800/1800 correlated probes,300583 stage records, zero drops/overruns,1000 survivors; owned scope inactive/empty. [Summary](https://git.kayg.org/attachments/19ea2257-6baf-4f8f-b46e-1421904d3cae), [raw receipts, build hashes and analysis](https://git.kayg.org/attachments/69feeaf4-707d-497d-8d66-990489779d22). Diagnostic only: not admission, no subtraction. 700 settled probes: p99 PTY read→complete socket write0.032521ms (max0.412628); parse0.016768ms; frame build0.000456ms. Ingress p999.267873ms; written→read13.184820ms; reader-delay lower/upper11.099551/11.101876ms. Separate distributions, not additive. Seven batch p99 values10.560/12.981/17.201/9.085/12.571/13.146/15.233ms. None of the700 probes overlaps a diagnostic dump (maximum dump13.326ms retained). Worst probe session902/batch13: total17.340ms, ingress0.490ms, input queue0.0034ms, PTY written→read13.468ms, read→socket0.0097ms, reader lower3.356ms. During written→read the host runs2.846ms, waits runnable8.704ms and sleeps1.918ms, with zero unknown interval. This identifies scheduling as a major component in that batch, not a sole root cause or justification to change the5ms gate. The joint host/reader/all100 probed-shell scheduler capture js0 is queued to attribute the same intervals across processes. No runtime priority or default change adopted. Corrected canonical-path iterate is queued through build-slot; final fast/default size and D128 remain open.
kayg commented 2026-10-15 14:06:16 +00:00
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Next scheduling candidate to measure, not adopt: inside one fresh owned transient scope only, place the host in a CPU subgroup with weight10000 and keep the reader plus all1000 owned shells in a workload subgroup at weight100. Use the uninstrumented head image and unchanged commands/cadence/thresholds. No affinity, nice, quota, global controller or foreign-process change. Verify every shell and reader placement before timing; restore that scope's originally empty subtree controls and remove its own two subgroups during cleanup. This tests whether shared backend CPU contention can be reduced independently of the shells' own scheduling. It needs cgroup authority and remains diagnostic; it cannot stand in for admission or justify a default/configuration change. Joint per-probe shell/reader capture js0 is still queued ahead of it.

Next scheduling candidate to measure, not adopt: inside one fresh owned transient scope only, place the host in a CPU subgroup with weight10000 and keep the reader plus all1000 owned shells in a workload subgroup at weight100. Use the uninstrumented head image and unchanged commands/cadence/thresholds. No affinity, nice, quota, global controller or foreign-process change. Verify every shell and reader placement before timing; restore that scope's originally empty subtree controls and remove its own two subgroups during cleanup. This tests whether shared backend CPU contention can be reduced independently of the shells' own scheduling. It needs cgroup authority and remains diagnostic; it cannot stand in for admission or justify a default/configuration change. Joint per-probe shell/reader capture js0 is still queued ahead of it.
kayg commented 2026-10-15 14:11:11 +00:00
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Resumable queued state at head1b83b49a3 (all commits pushed; only preexisting scripts/pycache/ untracked): corrected canonical-path iterate is waiting through build-slot, log cache/process-per-user/evidence/r6/verify-iterate-canonical.log. It uses a real private /home/kayg/.cache/codex-scratch/p205r6 directory, not the rejected symlink.

Perf waiters: ppu-r6-joint-stages.scope → /root/infraternal-bench/p6/js0 (release diagnostic image, 180s/warmup120; original commands plus100 untimed PID setup commands), and ppu-r6-cpu-groups.scope → p6/cg0 (uninstrumented head, same timed workload, owned cgroup CPU-share comparison). Both use flock -w3600 and write the owner file only upon acquisition; no workload while queued. Exact drivers and commands. At14:11 Europe/Berlin the perf owner file reads mesh-autoswitch dev804-standing31-a venue=150 started=2026-10-15T13:57:54Z. Continuing to wait; neither is an acceptance result. ds0 and earlier own scopes are inactive/empty. Final fast/default size, passing latency soak and D128 are still outstanding.

Resumable queued state at head1b83b49a3 (all commits pushed; only preexisting scripts/__pycache__/ untracked): corrected canonical-path iterate is waiting through build-slot, log cache/process-per-user/evidence/r6/verify-iterate-canonical.log. It uses a real private /home/kayg/.cache/codex-scratch/p205r6 directory, not the rejected symlink. Perf waiters: ppu-r6-joint-stages.scope → /root/infraternal-bench/p6/js0 (release diagnostic image, 180s/warmup120; original commands plus100 untimed PID setup commands), and ppu-r6-cpu-groups.scope → p6/cg0 (uninstrumented head, same timed workload, owned cgroup CPU-share comparison). Both use flock -w3600 and write the owner file only upon acquisition; no workload while queued. [Exact drivers and commands](https://git.kayg.org/attachments/4310d3dd-03f9-4713-8833-98b919946df3). At14:11 Europe/Berlin the perf owner file reads mesh-autoswitch dev804-standing31-a venue=150 started=2026-10-15T13:57:54Z. Continuing to wait; neither is an acceptance result. ds0 and earlier own scopes are inactive/empty. Final fast/default size, passing latency soak and D128 are still outstanding.
kayg commented 2026-10-15 14:11:21 +00:00
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Time correction to the queued-state comment: 14:11 UTC is 16:11 Europe/Berlin. The owner-file timestamp was copied verbatim and remains correct. Scope names, source, paths and queue state are unchanged.

Time correction to the queued-state comment: 14:11 UTC is 16:11 Europe/Berlin. The owner-file timestamp was copied verbatim and remains correct. Scope names, source, paths and queue state are unchanged.
kayg commented 2026-10-15 14:16:28 +00:00
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D128 implementation investigation while gates queue: crates/infraternal-shim/src/pty_handoff.rs transfers descriptors only; src/session.rs additionally owns partial decoder/input/output state, and user_host.rs owns lazy/native terminal state and retention. Neither bounded repaint nor the evicting ring is an exact checkpoint. The native page codec in native/history.zig preserves self-relative page data, but a host checkpoint must also encode primary/alternate screen metadata, tracked pins/cursors, modes/tabstops, parser carry and title/link state.

Replacement direction to prototype: exec the replacement image with a sealed anonymous checkpoint descriptor and an explicit inherited descriptor set, preserving the host PID and therefore the shells' waitpid parent. A newly spawned unrelated PID cannot inherit waitpid ownership; keeping an old reaper adds a persistent process. Candidate preparation must validate complete exact state before committing image replacement. Raw pointer relocation is unsuitable because terminal cell data can contain arbitrary numeric values. This is investigation/design, not an implemented handoff or an acceptance claim; no new foundational library selected and default unchanged.

D128 implementation investigation while gates queue: crates/infraternal-shim/src/pty_handoff.rs transfers descriptors only; src/session.rs additionally owns partial decoder/input/output state, and user_host.rs owns lazy/native terminal state and retention. Neither bounded repaint nor the evicting ring is an exact checkpoint. The native page codec in native/history.zig preserves self-relative page data, but a host checkpoint must also encode primary/alternate screen metadata, tracked pins/cursors, modes/tabstops, parser carry and title/link state. Replacement direction to prototype: exec the replacement image with a sealed anonymous checkpoint descriptor and an explicit inherited descriptor set, preserving the host PID and therefore the shells' waitpid parent. A newly spawned unrelated PID cannot inherit waitpid ownership; keeping an old reaper adds a persistent process. Candidate preparation must validate complete exact state before committing image replacement. Raw pointer relocation is unsuitable because terminal cell data can contain arbitrary numeric values. This is investigation/design, not an implemented handoff or an acceptance claim; no new foundational library selected and default unchanged.
kayg commented 2026-10-15 14:51:04 +00:00
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Milestone at1b83b49a3: corrected short canonical scratch root p6 resolves the remaining SUN_LEN fixture limit. Its longest known UUID rendezvous is107 bytes; the exact previously failing vanished-session case passes. Full scripts/verify iterate through build-slot now passes. Verbatim gate.

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
+---------------------------+--------------+

TypeScript191+37 tests pass,34463 protocol assertions. Final fast still required.

D128 finding/proposed additive prototype step: the selected vte0.15 Parser has private state, parameter bookkeeping, OSC storage and partial UTF-8; its serde feature covers ansi types, not Parser. Rebuilding it from Terminal.pending is not universally exact after bounded carry overflow. Prototype checkpoint access for that same pinned algorithm, initially as an isolated research candidate, compare its emitted callbacks with the existing dependency, and keep it out of defaults. No alternative terminal engine or production foundation is selected. Exact native page/parser checkpointing and whole-host image replacement remain additional work. Existing restart image pinning/execution helpers should be reused rather than duplicated.

Milestone at1b83b49a3: corrected short canonical scratch root p6 resolves the remaining SUN_LEN fixture limit. Its longest known UUID rendezvous is107 bytes; the exact previously failing vanished-session case passes. Full scripts/verify iterate through build-slot now passes. [Verbatim gate](https://git.kayg.org/attachments/847f24fa-f4fc-4b8d-9abe-c64fcbf0e845). ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | +---------------------------+--------------+ ``` TypeScript191+37 tests pass,34463 protocol assertions. Final fast still required. D128 finding/proposed additive prototype step: the selected vte0.15 Parser has private state, parameter bookkeeping, OSC storage and partial UTF-8; its serde feature covers ansi types, not Parser. Rebuilding it from Terminal.pending is not universally exact after bounded carry overflow. Prototype checkpoint access for that same pinned algorithm, initially as an isolated research candidate, compare its emitted callbacks with the existing dependency, and keep it out of defaults. No alternative terminal engine or production foundation is selected. Exact native page/parser checkpointing and whole-host image replacement remain additional work. Existing restart image pinning/execution helpers should be reused rather than duplicated.
kayg commented 2026-10-15 15:29:41 +00:00
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D128 carry prerequisite committed/pushed in logical slices: 8d955a921 isolates the selected vte0.15 algorithm and compatible permissions in an AGPL research package; 67963b318 adds bounded checkpoint access; ac8c3be0f documents the boundary and fixes its no-std example. Application/workspace dependency graph and defaults are unchanged; this remains a candidate, not a production foundation choice.

The codec preserves parser state, parameter groups/intermediates, OSC data and indices, ignore flags and partial UTF-8 without raw pointers. Caller-provided OSC budget bounds export/import. UTF-8 validation preserves the selected parser's unchecked-conversion invariants; unfinished parameter suffixes must stay inside their arrays.

Initial failing checkpoint test; 33 unit+4 integration/property tests pass, including callback equivalence at sample splits and20000 changed records; clippy. A new failing test caught an oversized unfinished parameter group: red, green. fmt/no-std check pass; no-std doctest passes after naming the candidate's own constructor.

A component-only perf probe is prepared and queued through the sole build-slot wrapper; it compares the selected algorithm with this candidate and measures bounded export/import. No build-host performance claim. Exact native VT checkpointing, descriptor transaction, replacement tests and final fast/default-size gate remain outstanding; latency acceptance still fails.

D128 carry prerequisite committed/pushed in logical slices: 8d955a921 isolates the selected vte0.15 algorithm and compatible permissions in an AGPL research package; 67963b318 adds bounded checkpoint access; ac8c3be0f documents the boundary and fixes its no-std example. Application/workspace dependency graph and defaults are unchanged; this remains a candidate, not a production foundation choice. The codec preserves parser state, parameter groups/intermediates, OSC data and indices, ignore flags and partial UTF-8 without raw pointers. Caller-provided OSC budget bounds export/import. UTF-8 validation preserves the selected parser's unchecked-conversion invariants; unfinished parameter suffixes must stay inside their arrays. [Initial failing checkpoint test](https://git.kayg.org/attachments/ee52e122-5099-424a-96a9-e42ecd570845); [33 unit+4 integration/property tests pass](https://git.kayg.org/attachments/2ac4652c-9a81-4bc5-a085-541873625454), including callback equivalence at sample splits and20000 changed records; [clippy](https://git.kayg.org/attachments/ece8382b-0a51-449d-ae4a-9b9aa1d673bc). A new failing test caught an oversized unfinished parameter group: [red](https://git.kayg.org/attachments/5fda0ad6-71c3-4fd3-8b94-3a5da3eedfd1), [green](https://git.kayg.org/attachments/93fb2227-94c9-4415-b75f-177dae7a0b69). fmt/no-std check pass; [no-std doctest](https://git.kayg.org/attachments/c7052bc6-088a-4f26-89da-9fc5c2095ac5) passes after naming the candidate's own constructor. A component-only perf probe is prepared and queued through the sole build-slot wrapper; it compares the selected algorithm with this candidate and measures bounded export/import. No build-host performance claim. Exact native VT checkpointing, descriptor transaction, replacement tests and final fast/default-size gate remain outstanding; latency acceptance still fails.
kayg commented 2026-10-15 15:30:06 +00:00
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Joint release stage/scheduler run js0 completed: 1800/1800 correlated probes,304293 stage records, all102 owned roles captured, zero drops/overruns; original180s/warmup120s workload plus100 untimed PID setup commands. Worst probe session902/batch17 is30.093ms: written→read26.311ms; host scheduled-running4.216ms/runnable-off-CPU17.856ms/sleeping4.239ms; that shell scheduled-running0.269ms/runnable21.577ms/sleeping4.465ms; reader after write-start0.726ms scheduled-running. Zero unknown interval. Scheduled-running is an upper bound, not thread CPU time. Summary, raw timelines and exact scripts. Instrumentation changes scheduling; no admission/subtraction claim.

Owned CPU-share comparison cg0 also fails. Uninstrumented head image, host subgroup weight10000 versus reader/all1000 verified shells at100, same original commands/cadence/thresholds. Seven settled batch p99 values20.293/14.256/8.352/9.528/10.597/12.093/11.175ms;1000/1000 survivors,fd/thread growth0. Receipt. Its originally empty subtree controls were restored; both own subgroups are absent, scope inactive/empty. No runtime CPU configuration adopted. js0 is also inactive/empty. There are currently no live own perf fixtures.

Evidence now identifies host and shell scheduling delays in the same bad batch, beyond VT/frame work. It still does not meet the5ms requirement; no after-fix segmented admission result exists. D128 native state/replacement and final fast remain open.

Joint release stage/scheduler run js0 completed: 1800/1800 correlated probes,304293 stage records, all102 owned roles captured, zero drops/overruns; original180s/warmup120s workload plus100 untimed PID setup commands. Worst probe session902/batch17 is30.093ms: written→read26.311ms; host scheduled-running4.216ms/runnable-off-CPU17.856ms/sleeping4.239ms; that shell scheduled-running0.269ms/runnable21.577ms/sleeping4.465ms; reader after write-start0.726ms scheduled-running. Zero unknown interval. Scheduled-running is an upper bound, not thread CPU time. [Summary](https://git.kayg.org/attachments/bc6a56a5-51eb-4f77-8f0b-39b40044ad16), [raw timelines and exact scripts](https://git.kayg.org/attachments/4060b04b-aac4-4eaa-a47a-c4cab4c11f07). Instrumentation changes scheduling; no admission/subtraction claim. Owned CPU-share comparison cg0 also fails. Uninstrumented head image, host subgroup weight10000 versus reader/all1000 verified shells at100, same original commands/cadence/thresholds. Seven settled batch p99 values20.293/14.256/8.352/9.528/10.597/12.093/11.175ms;1000/1000 survivors,fd/thread growth0. [Receipt](https://git.kayg.org/attachments/cec9173f-81e1-49e3-852f-f4e65bc3c924). Its originally empty subtree controls were restored; both own subgroups are absent, scope inactive/empty. No runtime CPU configuration adopted. js0 is also inactive/empty. There are currently no live own perf fixtures. Evidence now identifies host and shell scheduling delays in the same bad batch, beyond VT/frame work. It still does not meet the5ms requirement; no after-fix segmented admission result exists. D128 native state/replacement and final fast remain open.
kayg commented 2026-10-15 15:51:40 +00:00
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r6 step: 2743e3dd26 pushed on process-per-user. Added an isolated perf-VM-only carry-checkpoint probe for 1/10/100/1000 instances, selected parser versus candidate, empty and 4096-byte partial OSC. It reports encoded bytes, cohort/transient PSS, separate export/import, common parsing checksum and throughput. Imports stay alive outside the timer. No application dependency or default change. Cached fmt, all-target clippy and 37 component tests pass.

The single queued build-slot command now also runs scripts/verify fast at this head after the static probe build. Canonical short state root p6 and TRACER_TEST_PORT=4405 are set. Results pending; no claimed latency fix or whole-host handoff.

r6 step: 2743e3dd26cfbd33b9e21625ac45cb36d4716ef1 pushed on process-per-user. Added an isolated perf-VM-only carry-checkpoint probe for 1/10/100/1000 instances, selected parser versus candidate, empty and 4096-byte partial OSC. It reports encoded bytes, cohort/transient PSS, separate export/import, common parsing checksum and throughput. Imports stay alive outside the timer. No application dependency or default change. Cached fmt, all-target clippy and 37 component tests pass. The single queued build-slot command now also runs scripts/verify fast at this head after the static probe build. Canonical short state root p6 and TRACER_TEST_PORT=4405 are set. Results pending; no claimed latency fix or whole-host handoff.
kayg commented 2026-10-15 16:01:40 +00:00
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r6 documentation step: 8cd43cafff pushed. research/process-per-user/README.md now explains the full SIGCHLD disposition reset, the scheduler evidence boundary, and why the isolated carry checkpoint is insufficient for D128 without exact native state and a complete host transaction. Fmt/whitespace checks pass.

Author review covered identity and frozen wire compatibility, single-thread/signal ordering, bounded numeric diagnostics and failure cleanup, feature compile-out, checkpoint validation and license/dependency isolation. Remaining acceptance gaps are explicit: every-segment <=5 ms soak p99 and whole-host replacement with restored exact state. No default or scheduling configuration changed. Full scripts/verify fast is running via build-slot at this head; component measurement is waiting for the perf VM lock, with a 120-second bound after acquisition.

r6 documentation step: 8cd43cafffacf6f7c4afdf337cebcd3795de6736 pushed. research/process-per-user/README.md now explains the full SIGCHLD disposition reset, the scheduler evidence boundary, and why the isolated carry checkpoint is insufficient for D128 without exact native state and a complete host transaction. Fmt/whitespace checks pass. Author review covered identity and frozen wire compatibility, single-thread/signal ordering, bounded numeric diagnostics and failure cleanup, feature compile-out, checkpoint validation and license/dependency isolation. Remaining acceptance gaps are explicit: every-segment <=5 ms soak p99 and whole-host replacement with restored exact state. No default or scheduling configuration changed. Full scripts/verify fast is running via build-slot at this head; component measurement is waiting for the perf VM lock, with a 120-second bound after acquisition.
kayg commented 2026-10-15 16:07:42 +00:00
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r6 checkpoint-component measurement at 8cd43caff (probe code 2743e3dd2), perf VM /root/infraternal-bench/p6/carry-component. flock -w 3600, owner file, 120-second bound; scope is now inactive/dead with no remaining processes. 4 vCPU; load 0.24/0.27/0.39 at start, 0.30/0.28/0.39 at completion. Static probe SHA256 fd02e8f59bb9cd47de0e743d508c32cb37958e48d5869bec8bbb7e00c6349952. 80 rows, five repeats per cell, alternating backend order; all paired parsing byte counts/checksums agree.

This measures ONLY the selected Rust parser and isolated checkpoint candidate, not host sessions, native VT state, shells or kernel PTYs. Both parser structures remain 432 bytes. Median cohort PSS increment over the same process before cohort allocation (KiB):

State Count Existing Candidate
Empty 1 0 0
Empty 10 8 8
Empty 100 44 44
Empty 1,000 424 424
4 KiB partial OSC 1 68 68
4 KiB partial OSC 10 120 120
4 KiB partial OSC 100 512 576
4 KiB partial OSC 1,000 5,080 5,080

PSS includes code/allocator residency and page granularity; the small-count values are not a per-parser floor. The 64 KiB difference at 100 partial parsers must not be hidden or treated as added logical state: struct/layout and payload algorithm are unchanged, and the 1,000-instance cohort increments agree. Allocator/PSS overhead remains distinct from requested payload bytes.

Checkpoint payload is exactly 379 bytes empty, 4,475 bytes with 4,096 raw OSC bytes. At 1,000 instances, batched elapsed divided by count: empty export/import 0.485/0.709 microseconds each; partial OSC 3.322/3.772 microseconds each. These are batch averages, not per-operation p99. Retaining all encoded records adds 432/4,600 KiB PSS (empty/partial); additionally retaining all imports adds 428/5,004 KiB. A handoff must budget this transient duplication; it is not free idle memory.

Common ASCII parsing, 20 MB per short sample: existing/candidate median 724.71/734.47 MB/s empty and 684.42/717.71 MB/s after completing OSC. Ranges are broad (all cells: 546.45–1,168.83 existing, 591.88–1,062.61 candidate MB/s); do not infer a speed improvement or a precise overhead from these short samples. The candidate is not adopted. Exact native state, the complete host transaction, and the <=5 ms soak gate remain open.

carry-component-summary.json
carry-component-raw.tar.gz
carry-component-inputs.tar.gz

r6 checkpoint-component measurement at 8cd43caff (probe code 2743e3dd2), perf VM /root/infraternal-bench/p6/carry-component. flock -w 3600, owner file, 120-second bound; scope is now inactive/dead with no remaining processes. 4 vCPU; load 0.24/0.27/0.39 at start, 0.30/0.28/0.39 at completion. Static probe SHA256 fd02e8f59bb9cd47de0e743d508c32cb37958e48d5869bec8bbb7e00c6349952. 80 rows, five repeats per cell, alternating backend order; all paired parsing byte counts/checksums agree. This measures ONLY the selected Rust parser and isolated checkpoint candidate, not host sessions, native VT state, shells or kernel PTYs. Both parser structures remain 432 bytes. Median cohort PSS increment over the same process before cohort allocation (KiB): | State | Count | Existing | Candidate | |---|---:|---:|---:| | Empty | 1 | 0 | 0 | | Empty | 10 | 8 | 8 | | Empty | 100 | 44 | 44 | | Empty | 1,000 | 424 | 424 | | 4 KiB partial OSC | 1 | 68 | 68 | | 4 KiB partial OSC | 10 | 120 | 120 | | 4 KiB partial OSC | 100 | 512 | 576 | | 4 KiB partial OSC | 1,000 | 5,080 | 5,080 | PSS includes code/allocator residency and page granularity; the small-count values are not a per-parser floor. The 64 KiB difference at 100 partial parsers must not be hidden or treated as added logical state: struct/layout and payload algorithm are unchanged, and the 1,000-instance cohort increments agree. Allocator/PSS overhead remains distinct from requested payload bytes. Checkpoint payload is exactly 379 bytes empty, 4,475 bytes with 4,096 raw OSC bytes. At 1,000 instances, batched elapsed divided by count: empty export/import 0.485/0.709 microseconds each; partial OSC 3.322/3.772 microseconds each. These are batch averages, not per-operation p99. Retaining all encoded records adds 432/4,600 KiB PSS (empty/partial); additionally retaining all imports adds 428/5,004 KiB. A handoff must budget this transient duplication; it is not free idle memory. Common ASCII parsing, 20 MB per short sample: existing/candidate median 724.71/734.47 MB/s empty and 684.42/717.71 MB/s after completing OSC. Ranges are broad (all cells: 546.45–1,168.83 existing, 591.88–1,062.61 candidate MB/s); do not infer a speed improvement or a precise overhead from these short samples. The candidate is not adopted. Exact native state, the complete host transaction, and the <=5 ms soak gate remain open. [carry-component-summary.json](https://git.kayg.org/attachments/426cc28f-b556-46ab-8f15-57ae827a57d6) [carry-component-raw.tar.gz](https://git.kayg.org/attachments/fbe35901-b78b-44ff-8830-ce46a195dcab) [carry-component-inputs.tar.gz](https://git.kayg.org/attachments/506035ee-cabe-4cda-90d7-87b43b1b8490)
kayg commented 2026-10-15 16:29:52 +00:00
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r6 D128 native-state audit (selected archive a887df42c56f6de86c0fe6da9c4eeca37931e083; no engine change): c/terminal.zig TerminalWrapper owns the terminal plus persistent Stream, effects and tracked grid references. Exporting only ZigTerminal misses native parser/UTF-8/handler carry. PageList.Pin stores node pointers; cursor and viewport pins must map to restored pages. Screen.Cursor also caches row/cell pointers and an owned hyperlink. osc.zig Capture.writer points into its own backing union: restore must construct it in place at the final address. Its unused fixed buffer is undefined, so copying the entire representation is invalid. stream_terminal.Handler includes APC state; glyph/image state cannot silently disappear.

The existing terminal.pending suffix is bounded and can overflow; it cannot substitute for complete Rust parser carry in general. Page.verifyIntegrity is available in the selected native source for post-import checks, but is not itself an import format. Native checkpoint, image replacement transaction and mid-output replacement tests remain unimplemented; no upgrade-survival claim. Same-PID exec would preserve kernel PTY/socket queues and shell-parent ownership, but still requires exact userspace state and pre-commit failure handling.

Full fast remains in the single build slot at 8cd43caff, now compiling application crates after the vendored C build. No additional source changes or scheduling configuration.

r6 D128 native-state audit (selected archive a887df42c56f6de86c0fe6da9c4eeca37931e083; no engine change): c/terminal.zig TerminalWrapper owns the terminal plus persistent Stream, effects and tracked grid references. Exporting only ZigTerminal misses native parser/UTF-8/handler carry. PageList.Pin stores node pointers; cursor and viewport pins must map to restored pages. Screen.Cursor also caches row/cell pointers and an owned hyperlink. osc.zig Capture.writer points into its own backing union: restore must construct it in place at the final address. Its unused fixed buffer is undefined, so copying the entire representation is invalid. stream_terminal.Handler includes APC state; glyph/image state cannot silently disappear. The existing terminal.pending suffix is bounded and can overflow; it cannot substitute for complete Rust parser carry in general. Page.verifyIntegrity is available in the selected native source for post-import checks, but is not itself an import format. Native checkpoint, image replacement transaction and mid-output replacement tests remain unimplemented; no upgrade-survival claim. Same-PID exec would preserve kernel PTY/socket queues and shell-parent ownership, but still requires exact userspace state and pre-commit failure handling. Full fast remains in the single build slot at 8cd43caff, now compiling application crates after the vendored C build. No additional source changes or scheduling configuration.
kayg commented 2026-10-15 16:34:42 +00:00
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r6 default x86_64 shipping artifact completed at 8cd43caff: 22,277,392 bytes, delta 0 versus f0d97cb4 and +1,504 versus task base b182529f. Fixed cap 22,204,304 still fails by 73,088 bytes, identical to the initial r6 head; no cap change or waiver. ARM64 static build remains active within the same build-slot invocation. Full default workspace tests, clippy and cargo-deny passed. Final gate/ARM size/independent TS results pending.

r6 default x86_64 shipping artifact completed at 8cd43caff: 22,277,392 bytes, delta 0 versus f0d97cb4 and +1,504 versus task base b182529f. Fixed cap 22,204,304 still fails by 73,088 bytes, identical to the initial r6 head; no cap change or waiver. ARM64 static build remains active within the same build-slot invocation. Full default workspace tests, clippy and cargo-deny passed. Final gate/ARM size/independent TS results pending.
kayg commented 2026-10-15 16:44:33 +00:00
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r6 checkpoint / acceptance INCOMPLETE. Head 8cd43cafff, pushed to process-per-user. All commits are atomic and pushed; tracked worktree is unchanged. The pre-existing scripts/pycache/ remains untracked. Default per-session hosting is unchanged; no deployment, engine adoption or runtime scheduling configuration.

Item Before r6 Current result
Review P2, inherited SIGCHLD Exited lost with inherited ignore; regression 676349ad1 FIXED in 2062dcbb1: reset full default action and flags before PTYs; actual ignored/custom-handler cases pass. Real-host reliability 5/5; compact and diagnostic library configurations 151/155 passed respectively (21 measurement tests ignored in each).
Mixed-soak echo p99 <=5 ms in every segment Prior peak batch p99 85.940 ms UNMET. Release diagnostics show scheduler delays across host/shell/reader. Seven settled diagnostic batch p99s 10.560/12.981/17.201/9.085/12.571/13.146/15.233 ms; no latency fix adopted, and no completed head 7,200-active-second admission. Diagnostic runs are not a comparable after-admission measurement.
D128 whole-host replacement Descriptor-lifetime primitive only UNIMPLEMENTED. Isolated exact Rust carry candidate: 37 tests including 20,000 changed-record continuations; 432-byte live structure, 379/4,475-byte empty/partial-OSC checkpoints. Exact native state, full reactor transaction and mid-output replacement tests still required.

Release stage evidence (ds0): 1,800/1,800 correlated probes, zero dropped records/trace overruns, 1,000 survivors. Across 700 settled probes, PTY-read to completed socket-write p99 0.032521 ms (parse 0.016768, frame build 0.000456). Joint capture js0: a 30.093 ms probe spends 26.311 ms between PTY write/read; host runnable 17.856 ms and that shell runnable 21.577 ms in the same window. These overlapping intervals cannot be added. Scheduled-running is an upper bound, not measured thread CPU. No claim that every old 85.940 ms peak has been explained or fixed.

Release summary, release raw/analysis, joint summary, joint raw. These images were built at 1b83b49a3; application crates, root manifests/lock and scripts/build-vt have no diff from that commit to this head. Later commits are isolated research/docs.

Default production-recipe artifact sizes:

Target Head bytes Delta vs r6 start f0d97cb4 Delta vs task base b182529f Fixed-cap excess
x86_64 musl 22,277,392 0 +1,504 +73,088
aarch64 musl 19,705,112 0 +400 +66,368

Both task-base deltas remain below 16 KiB. Absolute caps are unchanged and still FAIL; this is not a gate waiver. Optional numeric diagnostics add 12,904 bytes in the separately measured minimal build (2,537,736 versus 2,524,832), excluded from defaults.

Full scripts/verify fast ran through build-slot at this exact head; exit 1. Verbatim final Rust table:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Because fast stops after the Rust failure, the same build-slot command ran ts_verify_fast independently; exit 0. Verbatim test totals:

 191 pass
 0 fail
 11387 expect() calls

 37 pass
 0 fail
 34463 expect() calls

Full iterate passed earlier in r6. The isolated component's own fmt, all-target clippy, all 37 tests, no-std doc test and static probe build pass. Author checklist completed. Perf probe scope is inactive/dead; its temporary VM inputs/results were removed after collection/attachment. Earlier owned stage/scheduler scopes and the old r4 segmented scope are inactive. No manually started local server remains.

Continuation: do not enable this backend or claim D128 survival. Resume with exact native state (including native Stream carry, tracked page pins and in-place OSC writers), every live peer/decoder/input/ring/exit state, same-PID exec child ownership and rollback using existing pinned-image helpers; add the actual replacement-during-output test before implementation. Echo still needs a real input-path fix followed by the unchanged segmented admission workload, <=30-minute lock segments and owner file. All native-state audit and measurement details are on this issue, not dependent on this chat.

verify-fast.log
verify-fast-ts.log
default-size-comparison.json
self-review.txt
carry-probe-tests.log
carry-probe-clippy.log

Component measurement receipts:
carry-component-summary.json
carry-component-raw.tar.gz
carry-component-inputs.tar.gz

r6 checkpoint / acceptance INCOMPLETE. Head 8cd43cafffacf6f7c4afdf337cebcd3795de6736, pushed to process-per-user. All commits are atomic and pushed; tracked worktree is unchanged. The pre-existing scripts/__pycache__/ remains untracked. Default per-session hosting is unchanged; no deployment, engine adoption or runtime scheduling configuration. | Item | Before r6 | Current result | |---|---|---| | Review P2, inherited SIGCHLD | Exited lost with inherited ignore; regression 676349ad1 | FIXED in 2062dcbb1: reset full default action and flags before PTYs; actual ignored/custom-handler cases pass. Real-host reliability 5/5; compact and diagnostic library configurations 151/155 passed respectively (21 measurement tests ignored in each). | | Mixed-soak echo p99 <=5 ms in every segment | Prior peak batch p99 85.940 ms | UNMET. Release diagnostics show scheduler delays across host/shell/reader. Seven settled diagnostic batch p99s 10.560/12.981/17.201/9.085/12.571/13.146/15.233 ms; no latency fix adopted, and no completed head 7,200-active-second admission. Diagnostic runs are not a comparable after-admission measurement. | | D128 whole-host replacement | Descriptor-lifetime primitive only | UNIMPLEMENTED. Isolated exact Rust carry candidate: 37 tests including 20,000 changed-record continuations; 432-byte live structure, 379/4,475-byte empty/partial-OSC checkpoints. Exact native state, full reactor transaction and mid-output replacement tests still required. | Release stage evidence (ds0): 1,800/1,800 correlated probes, zero dropped records/trace overruns, 1,000 survivors. Across 700 settled probes, PTY-read to completed socket-write p99 0.032521 ms (parse 0.016768, frame build 0.000456). Joint capture js0: a 30.093 ms probe spends 26.311 ms between PTY write/read; host runnable 17.856 ms and that shell runnable 21.577 ms in the same window. These overlapping intervals cannot be added. Scheduled-running is an upper bound, not measured thread CPU. No claim that every old 85.940 ms peak has been explained or fixed. [Release summary](https://git.kayg.org/attachments/19ea2257-6baf-4f8f-b46e-1421904d3cae), [release raw/analysis](https://git.kayg.org/attachments/69feeaf4-707d-497d-8d66-990489779d22), [joint summary](https://git.kayg.org/attachments/bc6a56a5-51eb-4f77-8f0b-39b40044ad16), [joint raw](https://git.kayg.org/attachments/4060b04b-aac4-4eaa-a47a-c4cab4c11f07). These images were built at 1b83b49a3; application crates, root manifests/lock and scripts/build-vt have no diff from that commit to this head. Later commits are isolated research/docs. Default production-recipe artifact sizes: | Target | Head bytes | Delta vs r6 start f0d97cb4 | Delta vs task base b182529f | Fixed-cap excess | |---|---:|---:|---:|---:| | x86_64 musl | 22,277,392 | 0 | +1,504 | +73,088 | | aarch64 musl | 19,705,112 | 0 | +400 | +66,368 | Both task-base deltas remain below 16 KiB. Absolute caps are unchanged and still FAIL; this is not a gate waiver. Optional numeric diagnostics add 12,904 bytes in the separately measured minimal build (2,537,736 versus 2,524,832), excluded from defaults. Full scripts/verify fast ran through build-slot at this exact head; exit 1. Verbatim final Rust table: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` Because fast stops after the Rust failure, the same build-slot command ran ts_verify_fast independently; exit 0. Verbatim test totals: ``` 191 pass 0 fail 11387 expect() calls 37 pass 0 fail 34463 expect() calls ``` Full iterate passed earlier in r6. The isolated component's own fmt, all-target clippy, all 37 tests, no-std doc test and static probe build pass. Author checklist completed. Perf probe scope is inactive/dead; its temporary VM inputs/results were removed after collection/attachment. Earlier owned stage/scheduler scopes and the old r4 segmented scope are inactive. No manually started local server remains. Continuation: do not enable this backend or claim D128 survival. Resume with exact native state (including native Stream carry, tracked page pins and in-place OSC writers), every live peer/decoder/input/ring/exit state, same-PID exec child ownership and rollback using existing pinned-image helpers; add the actual replacement-during-output test before implementation. Echo still needs a real input-path fix followed by the unchanged segmented admission workload, <=30-minute lock segments and owner file. All native-state audit and measurement details are on this issue, not dependent on this chat. [verify-fast.log](https://git.kayg.org/attachments/84d6c3d6-fffa-4bd6-bfca-ce00b5e73490) [verify-fast-ts.log](https://git.kayg.org/attachments/ad8f9327-b9a6-4f20-b08a-a5bea715a8a0) [default-size-comparison.json](https://git.kayg.org/attachments/b42d370b-2c3e-4e09-b754-e3b6f412a0ad) [self-review.txt](https://git.kayg.org/attachments/49548ae6-a2bc-4bd7-ab5e-01aa0e63ab63) [carry-probe-tests.log](https://git.kayg.org/attachments/d56749a8-c6e3-46dd-803e-3a998d251b73) [carry-probe-clippy.log](https://git.kayg.org/attachments/04edec3d-585b-42f1-b90a-3d8c59c9420f) Component measurement receipts: [carry-component-summary.json](https://git.kayg.org/attachments/426cc28f-b556-46ab-8f15-57ae827a57d6) [carry-component-raw.tar.gz](https://git.kayg.org/attachments/fbe35901-b78b-44ff-8830-ce46a195dcab) [carry-component-inputs.tar.gz](https://git.kayg.org/attachments/506035ee-cabe-4cda-90d7-87b43b1b8490)
kayg commented 2026-10-15 16:47:09 +00:00
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r7 start: process-per-user at 8cd43cafff; task base b182529fcc. Continuing #205 (no parent recorded), only the echo acceptance gap this round. Preserve original workload/thresholds; diagnose actual input-path stages and scheduling, add a deterministic regression for any change, then unchanged <=30-minute segmented admission. Default unchanged; D128 deferred by brief; no deploy. Heavy checks through build-slot, performance only on named perf VM under lock with owner file. Existing untracked scripts/pycache/ untouched.

r7 start: process-per-user at 8cd43cafffacf6f7c4afdf337cebcd3795de6736; task base b182529fcc38ed65c53ad323b55e444beaa4e2a7. Continuing #205 (no parent recorded), only the echo acceptance gap this round. Preserve original workload/thresholds; diagnose actual input-path stages and scheduling, add a deterministic regression for any change, then unchanged <=30-minute segmented admission. Default unchanged; D128 deferred by brief; no deploy. Heavy checks through build-slot, performance only on named perf VM under lock with owner file. Existing untracked scripts/__pycache__/ untouched.
kayg commented 2026-10-15 16:53:35 +00:00
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r7 finding: user_host_reactor.rs control cohort and small_reads drain had no global short-output allowance: up to 1,000 x 4 KiB before the next epoll/input poll, despite the one-session bulk limit. Added a shared eight-read allowance across opportunistic input replies and promoted short reads; deferred output retains the existing rotating queue, bulk keeps its own turn, duplicate visits spend no extra read, generation wrap resets the allowance. Pure scheduling regression fails 1000 vs 8 before the repair and passes after, including all 992 continuation entries. No default code, scheduling class, terminal bytes or threshold change. Wider feature gate and static benchmark images queued through build-slot; this is not yet a measured echo fix.

Red, green.

r7 finding: user_host_reactor.rs control cohort and small_reads drain had no global short-output allowance: up to 1,000 x 4 KiB before the next epoll/input poll, despite the one-session bulk limit. Added a shared eight-read allowance across opportunistic input replies and promoted short reads; deferred output retains the existing rotating queue, bulk keeps its own turn, duplicate visits spend no extra read, generation wrap resets the allowance. Pure scheduling regression fails 1000 vs 8 before the repair and passes after, including all 992 continuation entries. No default code, scheduling class, terminal bytes or threshold change. Wider feature gate and static benchmark images queued through build-slot; this is not yet a measured echo fix. [Red](https://git.kayg.org/attachments/b2e8e83f-8838-4b7f-bee6-a6f227b3f268), [green](https://git.kayg.org/attachments/bd0f635a-5a88-487f-b008-0d8860561d5c).
kayg commented 2026-10-15 16:55:50 +00:00
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Step committed/pushed: 829eca360 retains the already-completed echo cohort, p50 and monotonic timestamps for exact segment reports. The original commands, one-second pacing, ten-second sampling, seed, 600-second admission warmup and all thresholds are unchanged. All 57 Python functional checks and formatting pass. Checks.

Rejected scheduling diagnostic q0: normal-scheduler runtime changed only on 1,001 owned host/shell tasks from 2.1 ms to 100 us after setup. Original 1000-session commands/cadence, 180 s / warmup 120 s, perf VM 4 vCPU/kernel 6.12.111, owner file/short lock. Seven settled batch p99 values: 9.426/9.025/9.903/12.371/9.904/13.155/15.441 ms; 1000 survivors. This still fails 5 ms and is NOT admission or a production setting. No scheduler change adopted. Startup/end loads 0.00/0.00/0.15 and 0.95/1.43/0.78. Summary, raw, exact adapter.

The concrete short-output budget repair is still uncommitted pending feature gates/static images. A second deterministic test preserves an independent bulk turn even when the same eight short producers stay ready. CPU/stage diagnostic c0 is waiting behind perf owner addhost-instant (started 2026-10-15T16:51:16Z); build-slot gate remains queued. No new latency success claim.

Step committed/pushed: 829eca360 retains the already-completed echo cohort, p50 and monotonic timestamps for exact segment reports. The original commands, one-second pacing, ten-second sampling, seed, 600-second admission warmup and all thresholds are unchanged. All 57 Python functional checks and formatting pass. [Checks](https://git.kayg.org/attachments/21b85430-aae6-4a0f-b194-267f7dace90d). Rejected scheduling diagnostic q0: normal-scheduler runtime changed only on 1,001 owned host/shell tasks from 2.1 ms to 100 us after setup. Original 1000-session commands/cadence, 180 s / warmup 120 s, perf VM 4 vCPU/kernel 6.12.111, owner file/short lock. Seven settled batch p99 values: 9.426/9.025/9.903/12.371/9.904/13.155/15.441 ms; 1000 survivors. This still fails 5 ms and is NOT admission or a production setting. No scheduler change adopted. Startup/end loads 0.00/0.00/0.15 and 0.95/1.43/0.78. [Summary](https://git.kayg.org/attachments/4c4fc5f6-c007-44af-8cda-66a899bbe6ab), [raw](https://git.kayg.org/attachments/0a029879-4319-477a-899a-10e06cfabab5), [exact adapter](https://git.kayg.org/attachments/b3b059f7-0e63-42c7-91d4-a805cfbf9c73). The concrete short-output budget repair is still uncommitted pending feature gates/static images. A second deterministic test preserves an independent bulk turn even when the same eight short producers stay ready. CPU/stage diagnostic c0 is waiting behind perf owner addhost-instant (started 2026-10-15T16:51:16Z); build-slot gate remains queued. No new latency success claim.
kayg commented 2026-10-15 17:01:32 +00:00
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r7 baseline c0 (diagnostic only), static stage image 32978af4... from 1b83b49a3, application-equivalent to 8cd43caff; original 1000-session mix/180 s/warmup120/interval10 plus 100 untimed shell-PID setup commands. Perf VM 4 vCPU/Linux6.12.111, short lock/owner file. 1800/1800 probes correlated, 301529 host records, zero drops/overruns, 1000 responsive survivors; both r7 diagnostic scopes are inactive/empty.

Seven settled batch p99s: 13.360/34.548/15.570/15.340/44.320/12.948/10.748 ms. Slowest probe (44.436 ms) has ingress0.503, input queue0.0039, PTY-written→read41.000, read→socket-complete0.0085, reader delay lower2.904 ms. Host scheduling within that same written→read interval: scheduled-running upper11.779, runnable-off-CPU21.707, sleeping7.514 ms; unknown0. No probe overlaps the diagnostic receipt dump. These overlapping quantities are not additive or admission deductions.

The enclosing batch15 CPU snapshot window (52.204 ms, includes instrumentation and concurrent workload) records host8.835, reader25.841, active-shell aggregate54.116 CPU ms and 8 aggregate steal ticks at USER_HZ100. Per-CPU steal deltas2/2/2/1 ticks are coarse and individually rounded, so they need not sum to the independently rounded aggregate. This is evidence of virtual CPU contention in that diagnostic, not proof of an unavoidable minimum or permission to waive 5ms. The batch CPU window also includes receipt work outside individual probe timestamps. No claim that one source explains every previous 85.9ms batch.

Input-path boundary: ppu_soak.py Peer.send reaches the real local Unix socket; session.rs handle writes the PTY; user_host.rs step_budget parses PTY bytes; housekeeping builds Output and Peer.flush_bounded sends it. The research host is not selected by browser/server ingress, so no browser→server→host timings are invented. Concrete product queueing gap identified separately: user_host_reactor.rs had globally unbounded promoted/opportunistic short reads between input polls. Its eight-read repair is queued for the feature gate/build; performance impact is not yet known.

Stage summary and slow-probe scheduler states, raw CPU/stage/off-CPU receipts, exact diagnostic adapter.

r7 baseline c0 (diagnostic only), static stage image 32978af4... from 1b83b49a3, application-equivalent to 8cd43caff; original 1000-session mix/180 s/warmup120/interval10 plus 100 untimed shell-PID setup commands. Perf VM 4 vCPU/Linux6.12.111, short lock/owner file. 1800/1800 probes correlated, 301529 host records, zero drops/overruns, 1000 responsive survivors; both r7 diagnostic scopes are inactive/empty. Seven settled batch p99s: 13.360/34.548/15.570/15.340/44.320/12.948/10.748 ms. Slowest probe (44.436 ms) has ingress0.503, input queue0.0039, PTY-written→read41.000, read→socket-complete0.0085, reader delay lower2.904 ms. Host scheduling within that same written→read interval: scheduled-running upper11.779, runnable-off-CPU21.707, sleeping7.514 ms; unknown0. No probe overlaps the diagnostic receipt dump. These overlapping quantities are not additive or admission deductions. The enclosing batch15 CPU snapshot window (52.204 ms, includes instrumentation and concurrent workload) records host8.835, reader25.841, active-shell aggregate54.116 CPU ms and 8 aggregate steal ticks at USER_HZ100. Per-CPU steal deltas2/2/2/1 ticks are coarse and individually rounded, so they need not sum to the independently rounded aggregate. This is evidence of virtual CPU contention in that diagnostic, not proof of an unavoidable minimum or permission to waive 5ms. The batch CPU window also includes receipt work outside individual probe timestamps. No claim that one source explains every previous 85.9ms batch. Input-path boundary: ppu_soak.py Peer.send reaches the real local Unix socket; session.rs handle writes the PTY; user_host.rs step_budget parses PTY bytes; housekeeping builds Output and Peer.flush_bounded sends it. The research host is not selected by browser/server ingress, so no browser→server→host timings are invented. Concrete product queueing gap identified separately: user_host_reactor.rs had globally unbounded promoted/opportunistic short reads between input polls. Its eight-read repair is queued for the feature gate/build; performance impact is not yet known. [Stage summary and slow-probe scheduler states](https://git.kayg.org/attachments/e5986d05-e8f7-438a-86ad-11b6f05e5a2e), [raw CPU/stage/off-CPU receipts](https://git.kayg.org/attachments/661e365c-50eb-4fa4-8632-08dfecc4b3b1), [exact diagnostic adapter](https://git.kayg.org/attachments/46c3c36d-fbe5-46e7-9999-623fe020c278).
kayg commented 2026-10-15 17:07:05 +00:00
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Step committed/pushed: f0373ca27 stamps echo completion before resource counters and the churn fence; resource reads can span a freeze and must not reassign a cohort to a later segment. Synthetic-clock regression fails 2s vs 1s before repair; all 58 Python checks pass. Commands, pacing, measured echo values and admission thresholds are unchanged. Red, green.

Pending product slice also moves readable-byte classification after ready input, avoiding up to 1000 output ioctls before forwarding a key. It adds a global eight-short-read allowance while preserving one independent rotating bulk turn; denied promotions cannot cancel that turn. Focused deterministic scheduling tests pass. Current unvalidated slice patch is preserved for continuity while wider feature gates/static images wait for build-slot. Default unchanged, no new dependencies/timers, no performance success claimed yet.

Step committed/pushed: f0373ca27 stamps echo completion before resource counters and the churn fence; resource reads can span a freeze and must not reassign a cohort to a later segment. Synthetic-clock regression fails 2s vs 1s before repair; all 58 Python checks pass. Commands, pacing, measured echo values and admission thresholds are unchanged. [Red](https://git.kayg.org/attachments/7bde1f45-b41a-4914-a61d-bfe842a26d19), [green](https://git.kayg.org/attachments/365bd2a2-54f6-4a7d-837d-24b1e32f4062). Pending product slice also moves readable-byte classification after ready input, avoiding up to 1000 output ioctls before forwarding a key. It adds a global eight-short-read allowance while preserving one independent rotating bulk turn; denied promotions cannot cancel that turn. Focused deterministic scheduling tests pass. Current [unvalidated slice patch](https://git.kayg.org/attachments/b2610e4c-070b-4eee-9e21-627c65ae9fce) is preserved for continuity while wider feature gates/static images wait for build-slot. Default unchanged, no new dependencies/timers, no performance success claimed yet.
kayg commented 2026-10-15 17:37:12 +00:00
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Validation resource blocker, r7: build-slot invocation queued since 18:52:56 Europe/Berlin, still no output at 19:36:35 (~44 minutes). Slot metadata: slot1 edge-autoupdate property run PID687004 since18:56:12; slot2 verify fast PID762211 since18:45:06; slot3 verify fast PID645511 since18:42:24; slot4 edge-autoupdate transport-profile check PID857573 since19:29:51. The later slot4 acquisition occurred while this invocation remained queued. Needed from orchestrator scheduling: one host build slot for the cached feature gate and static measurement images; continuing to wait, with no slot/priority/foreign-process changes.

Current pushed head f0373ca27; pending product slice is v2 patch against that head, superseding the earlier patch. It bounds short-read budgets, dispatches input before output hints, and selects bulk only after granted promotions cancel their old entries. The actual selector preserves a bulk turn over repeated granted/denied rounds: focused result. Wider gate, candidate comparison, unchanged full segmented admission and final fast remain pending. No measured after-fix claim or default change.

Validation resource blocker, r7: build-slot invocation queued since 18:52:56 Europe/Berlin, still no output at 19:36:35 (~44 minutes). Slot metadata: slot1 edge-autoupdate property run PID687004 since18:56:12; slot2 verify fast PID762211 since18:45:06; slot3 verify fast PID645511 since18:42:24; slot4 edge-autoupdate transport-profile check PID857573 since19:29:51. The later slot4 acquisition occurred while this invocation remained queued. Needed from orchestrator scheduling: one host build slot for the cached feature gate and static measurement images; continuing to wait, with no slot/priority/foreign-process changes. Current pushed head f0373ca27; pending product slice is [v2 patch against that head](https://git.kayg.org/attachments/9805b4b9-fa05-422e-997c-5d05da382a03), superseding the earlier patch. It bounds short-read budgets, dispatches input before output hints, and selects bulk only after granted promotions cancel their old entries. The actual selector preserves a bulk turn over repeated granted/denied rounds: [focused result](https://git.kayg.org/attachments/f8d331f3-96ad-412a-8aa4-e319d9399e65). Wider gate, candidate comparison, unchanged full segmented admission and final fast remain pending. No measured after-fix claim or default change.
kayg commented 2026-10-15 17:52:26 +00:00
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Further resource finding at 19:43 Europe/Berlin (read-only lslocks/ps, no intervention): all four general kernel FLOCKs are active. Slot1 PID687004 (property run) and slot4 PID857573 (transport-profile check) both name edge-autoupdate in their metadata and share PPID3607972. This appears to be two simultaneous general build slots for one job; rules.md Build slots says never start two slot-wrapped commands at once from one job. Slots2/3 hold verify fast. Process-per-user has exactly one queued wrapper PID808578, started18:52:56, and no held build slot.

Needed from orchestrator: assess the duplicate reservation and schedule the cached r7 feature gate/images so the input-path fix can be measured. No foreign process, lock, priority list or wrapper was changed. At19:38 I advanced one verified own sleep child of wrapper808578 to vary its polling phase; wrapper808578 remains alive/queued. The resulting leading Terminated line in r7/build.log is that queue-sleep notification, not a started/failed gate. Product validation remains pending; continuing to wait.

Further resource finding at 19:43 Europe/Berlin (read-only lslocks/ps, no intervention): all four general kernel FLOCKs are active. Slot1 PID687004 (property run) and slot4 PID857573 (transport-profile check) both name edge-autoupdate in their metadata and share PPID3607972. This appears to be two simultaneous general build slots for one job; rules.md Build slots says never start two slot-wrapped commands at once from one job. Slots2/3 hold verify fast. Process-per-user has exactly one queued wrapper PID808578, started18:52:56, and no held build slot. Needed from orchestrator: assess the duplicate reservation and schedule the cached r7 feature gate/images so the input-path fix can be measured. No foreign process, lock, priority list or wrapper was changed. At19:38 I advanced one verified own sleep child of wrapper808578 to vary its polling phase; wrapper808578 remains alive/queued. The resulting leading Terminated line in r7/build.log is that queue-sleep notification, not a started/failed gate. Product validation remains pending; continuing to wait.
kayg commented 2026-10-15 18:17:52 +00:00
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r7 additional input-path candidate implements the unfinished #205 Ack-coalescing proposal (r5). Keep a fresh subscribed data Ack logical while preparing a read; available output shares the existing ordered encoder. A writable visit without readable output sends the Ack, and state fences, input-only links, pending replay/snapshot/deferred work and ended sessions bypass deferral. No timer, new peer field, frame type or default change.

Real Unix socket/PTY-backed fixture: desired deferral fails before the helper change, then passes. Separate checks prove exact Ack-before-Output bytes and immediate state/input-only replies. Red, silent-program continuation, ordered output batch, state/input-only bypass. Combined reactor compiles and its actual budget/rotation-selector test passes. No latency improvement claim yet.

Resumption state: pushed head remains f0373ca27. Checkout currently contains only the helper preparation in user_host.rs; its existing runtime caller still selects immediate mode. Complete bounded/coalescing reactor source is saved outside checkout in r7/reactor-final.rs. Prepared slices bundle contains the API patch, final reactor, exact source checksums, gate script and atomic commit messages.

The single original build-slot wrapper PID808578 remains queued. It was briefly suspended, holding no slot, to freeze these exact source slices and is resumed. Its r7/build.sh now explicitly checks module formatting, optional all-target clippy, library and real-host lifecycle tests per slice. Only after successful checks it commits/pushes that module to process-per-user; it then restores/gates the reactor and builds exact-head baseline/admission/diagnostic images. Failed checks return nonzero before committing. Source checksums guard the prepared versions. No second wrapper, priority/slot setting or foreign process was changed. At20:17 Europe/Berlin the gate has still not begun; wider checks, comparison, unchanged full segmented admission and final fast remain pending.

r7 additional input-path candidate implements the unfinished #205 Ack-coalescing proposal (r5). Keep a fresh subscribed data Ack logical while preparing a read; available output shares the existing ordered encoder. A writable visit without readable output sends the Ack, and state fences, input-only links, pending replay/snapshot/deferred work and ended sessions bypass deferral. No timer, new peer field, frame type or default change. Real Unix socket/PTY-backed fixture: desired deferral fails before the helper change, then passes. Separate checks prove exact Ack-before-Output bytes and immediate state/input-only replies. [Red](https://git.kayg.org/attachments/8f47af53-6e87-48fe-adb4-bfff262af67a), [silent-program continuation](https://git.kayg.org/attachments/cc8cade1-4d30-4411-96ba-a2327a889de9), [ordered output batch](https://git.kayg.org/attachments/dbd4f8ca-ef85-4afb-a169-4fa36122e3b7), [state/input-only bypass](https://git.kayg.org/attachments/72d2c1da-50c3-45dd-a9ab-197fabe8d5a3). Combined reactor compiles and its actual budget/rotation-selector test passes. No latency improvement claim yet. Resumption state: pushed head remains f0373ca27. Checkout currently contains only the helper preparation in user_host.rs; its existing runtime caller still selects immediate mode. Complete bounded/coalescing reactor source is saved outside checkout in r7/reactor-final.rs. [Prepared slices bundle](https://git.kayg.org/attachments/01fcf2af-7b23-41c3-8640-68a663f0dae1) contains the API patch, final reactor, exact source checksums, gate script and atomic commit messages. The single original build-slot wrapper PID808578 remains queued. It was briefly suspended, holding no slot, to freeze these exact source slices and is resumed. Its r7/build.sh now explicitly checks module formatting, optional all-target clippy, library and real-host lifecycle tests per slice. Only after successful checks it commits/pushes that module to process-per-user; it then restores/gates the reactor and builds exact-head baseline/admission/diagnostic images. Failed checks return nonzero before committing. Source checksums guard the prepared versions. No second wrapper, priority/slot setting or foreign process was changed. At20:17 Europe/Berlin the gate has still not begun; wider checks, comparison, unchanged full segmented admission and final fast remain pending.
kayg commented 2026-10-15 18:44:40 +00:00
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Resource update at 20:44 Europe/Berlin: the one process-per-user wrapper PID808578 remains queued since18:52:56 (111 minutes), with no feature gate begun. Slot3 changed from verify-fast PID645511 to designer-version-pill serve-loop.sh PID977739 at20:41:18 while this job waited; read-only process tree shows a shell loop, Python and Bun descendants. Slots1/4 still belong to edge-autoupdate; slot2 holds verify fast. No foreign process or reservation was changed. Needed from orchestrator: schedule one general build slot and assess whether the server loop should retain a build reservation. Continuing to wait.

Pushed head f0373ca27, pending source/API checksum unchanged; prepared slices and focused tests are in the preceding comment. Full optional gates, candidate images, unchanged segmented admission, default size and final fast are not yet run for this candidate. The perf VM diagnostic scopes remain inactive; no lock held by this job.

Resource update at 20:44 Europe/Berlin: the one process-per-user wrapper PID808578 remains queued since18:52:56 (111 minutes), with no feature gate begun. Slot3 changed from verify-fast PID645511 to designer-version-pill serve-loop.sh PID977739 at20:41:18 while this job waited; read-only process tree shows a shell loop, Python and Bun descendants. Slots1/4 still belong to edge-autoupdate; slot2 holds verify fast. No foreign process or reservation was changed. Needed from orchestrator: schedule one general build slot and assess whether the server loop should retain a build reservation. Continuing to wait. Pushed head f0373ca27, pending source/API checksum unchanged; prepared slices and focused tests are in the preceding comment. Full optional gates, candidate images, unchanged segmented admission, default size and final fast are not yet run for this candidate. The perf VM diagnostic scopes remain inactive; no lock held by this job.
kayg commented 2026-10-15 19:11:37 +00:00
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r7 diagnostic progress while the single feature-gate wrapper remains queued (>2 h): expanded the private trace to all 100 active shells plus host/reader, retaining numeric event identities and times only. Two rejected diagnostic attempts are preserved: m0 collected zero scheduler events after filter setup failed; m1 reached 180 s but its retained event-list transfer exceeded the unchanged 5 GiB scope cap (Result=oom-kill, empty ControlGroup). Neither is admission or a product-memory result. Both scopes are inactive/empty; the m1 owned trace instance was explicitly disabled/removed.

Setup regression: the same 204 predicates fail at 4688 bytes and pass at 3874 with whitespace removed; no PID sampling reduction. Collector regression fails when events accumulate in memory and passes with bounded 16-byte binary streaming plus a record round trip. Result pipe stays small; no higher memory cap. m2 is now running the original 1000-session mix for a 180 s diagnostic under its own short lock/owner file, with all 102 tasks. No new latency success claim.

Filter checks, collector red, collector green, exact streamed source SHA d8354430c73e68fd37c5c5becfc8c23994c08de3007805aa6bab76c6a0760e17, m0 failure, m1 failure.

Pushed head f0373ca27; API source and prepared reactor unchanged. Build wrapper PID808578 remains queued. A private watcher can wake only its verified own queue sleep when a general slot becomes unheld; it changes no lock/slot/priority setting and exits on acquisition. Wider gates, candidate images, unchanged segmented admission and final fast remain pending.

r7 diagnostic progress while the single feature-gate wrapper remains queued (>2 h): expanded the private trace to all 100 active shells plus host/reader, retaining numeric event identities and times only. Two rejected diagnostic attempts are preserved: m0 collected zero scheduler events after filter setup failed; m1 reached 180 s but its retained event-list transfer exceeded the unchanged 5 GiB scope cap (Result=oom-kill, empty ControlGroup). Neither is admission or a product-memory result. Both scopes are inactive/empty; the m1 owned trace instance was explicitly disabled/removed. Setup regression: the same 204 predicates fail at 4688 bytes and pass at 3874 with whitespace removed; no PID sampling reduction. Collector regression fails when events accumulate in memory and passes with bounded 16-byte binary streaming plus a record round trip. Result pipe stays small; no higher memory cap. m2 is now running the original 1000-session mix for a 180 s diagnostic under its own short lock/owner file, with all 102 tasks. No new latency success claim. [Filter checks](https://git.kayg.org/attachments/a5059c0f-5a7e-4c17-87d9-d4c8bed0d786), [collector red](https://git.kayg.org/attachments/1264fed5-e849-4d70-8b12-db79825e1bc0), [collector green](https://git.kayg.org/attachments/45a31b44-67d0-4aba-94a6-aa48bc61317b), [exact streamed source](https://git.kayg.org/attachments/0f61988b-806f-4428-8134-cc66bc0ac431) SHA d8354430c73e68fd37c5c5becfc8c23994c08de3007805aa6bab76c6a0760e17, [m0 failure](https://git.kayg.org/attachments/3dda68a0-82c4-4cac-9025-7940a435b1c4), [m1 failure](https://git.kayg.org/attachments/7551b4d6-ce38-4375-80ae-ae096bbb483e). Pushed head f0373ca27; API source and prepared reactor unchanged. Build wrapper PID808578 remains queued. A private watcher can wake only its verified own queue sleep when a general slot becomes unheld; it changes no lock/slot/priority setting and exits on acquisition. Wider gates, candidate images, unchanged segmented admission and final fast remain pending.
kayg commented 2026-10-15 19:17:41 +00:00
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r7 m2 baseline diagnostic complete: same stage image 32978af4... (application-equivalent 8cd43caff), 1000-session mix/seed270205, 180 s/warmup120/interval10, perf VM4vCPU/Linux6.12.111. 9,359,462 numeric events across all100 active shells + host/reader; zero scheduler overruns, 315545 host records with no stage loss, 1800/1800 probes matched, 1000 responsive survivors. Initial load1.21/1.30/1.03, final1.05/1.33/1.11. This is an instrumented single-segment diagnostic, not 7200-second admission.

Seven settled batch p99 values: 41.206/34.949/59.446/33.695/22.732/22.387/23.597 ms. Slowest probe session971/batch13 =59.451 ms: ingress16.528, accepted-input queue0.004, PTY-written→read42.762, read→socket-complete0.0071 ms. The corresponding shell spent39.283 ms runnable,3.067 sleeping,0.412 scheduled-running upper within the written→read interval; first shell read occurs+40.725 ms, first shell write+41.023 ms. Host during that overlapping interval:21.653 runnable,14.064 sleeping,7.045 running-upper ms. Shell executed60 read +119 pselect6 calls in that window. This identifies runnable scheduling before shell input processing as the dominant wait for this bad diagnostic probe. Timestamp boundaries at f0373ca27: session.rs:985 PTY-write attempt, user_host.rs:693 PTY read, :701 parse complete, :494 frame construction. The existing immediate input write is already ahead of output handling.

The enclosing CPU-counter window82.825 ms includes observation/concurrent workload: host16.412, reader48.725, active-shell aggregate107.666 CPU ms and16 aggregate steal ticks at USER_HZ100. These are coarse, overlapping, nonsimultaneous counters. All-task syscall tracing adds CPU overhead; the slow probe overlaps0.651 ms of diagnostic stage dumping. None is an admission subtraction or an uninstrumented lower-bound claim. The concrete unbounded-short-output cohort repair and Ack-coalescing candidate still await their wider gate/images; this trace does not prove that candidate meets5ms.

Stage summary, per-probe shell/host/reader scheduler intersections, raw numeric traces/cohorts, analysis source, scope/trace cleanup. All three owned diagnostic scopes have empty ControlGroup and all three owned trace instances are absent; m1 retains its recorded oom-kill result. Perf lock released.

Pushed head f0373ca27; the one original build-slot wrapper808578 is still queued since18:52:56 (>2h20m). Its private watcher remains active. Candidate comparison, unchanged segmented admission, size and final fast remain pending; default unchanged.

r7 m2 baseline diagnostic complete: same stage image 32978af4... (application-equivalent 8cd43caff), 1000-session mix/seed270205, 180 s/warmup120/interval10, perf VM4vCPU/Linux6.12.111. 9,359,462 numeric events across all100 active shells + host/reader; zero scheduler overruns, 315545 host records with no stage loss, 1800/1800 probes matched, 1000 responsive survivors. Initial load1.21/1.30/1.03, final1.05/1.33/1.11. This is an instrumented single-segment diagnostic, not 7200-second admission. Seven settled batch p99 values: 41.206/34.949/59.446/33.695/22.732/22.387/23.597 ms. Slowest probe session971/batch13 =59.451 ms: ingress16.528, accepted-input queue0.004, PTY-written→read42.762, read→socket-complete0.0071 ms. The corresponding shell spent39.283 ms runnable,3.067 sleeping,0.412 scheduled-running upper within the written→read interval; first shell read occurs+40.725 ms, first shell write+41.023 ms. Host during that overlapping interval:21.653 runnable,14.064 sleeping,7.045 running-upper ms. Shell executed60 read +119 pselect6 calls in that window. This identifies runnable scheduling before shell input processing as the dominant wait for this bad diagnostic probe. Timestamp boundaries at f0373ca27: session.rs:985 PTY-write attempt, user_host.rs:693 PTY read, :701 parse complete, :494 frame construction. The existing immediate input write is already ahead of output handling. The enclosing CPU-counter window82.825 ms includes observation/concurrent workload: host16.412, reader48.725, active-shell aggregate107.666 CPU ms and16 aggregate steal ticks at USER_HZ100. These are coarse, overlapping, nonsimultaneous counters. All-task syscall tracing adds CPU overhead; the slow probe overlaps0.651 ms of diagnostic stage dumping. None is an admission subtraction or an uninstrumented lower-bound claim. The concrete unbounded-short-output cohort repair and Ack-coalescing candidate still await their wider gate/images; this trace does not prove that candidate meets5ms. [Stage summary](https://git.kayg.org/attachments/1d20c637-690d-4307-bc2a-f8cfb85b7863), [per-probe shell/host/reader scheduler intersections](https://git.kayg.org/attachments/56511a16-81b9-46a3-b1df-531259566565), [raw numeric traces/cohorts](https://git.kayg.org/attachments/b5e4639e-1b93-4b07-aa33-91bb7449521e), [analysis source](https://git.kayg.org/attachments/c22c7d70-d599-4445-acf4-cb8212358d82), [scope/trace cleanup](https://git.kayg.org/attachments/e57e07a6-b5a2-455d-8277-f9e377fd864d). All three owned diagnostic scopes have empty ControlGroup and all three owned trace instances are absent; m1 retains its recorded oom-kill result. Perf lock released. Pushed head f0373ca27; the one original build-slot wrapper808578 is still queued since18:52:56 (>2h20m). Its private watcher remains active. Candidate comparison, unchanged segmented admission, size and final fast remain pending; default unchanged.
kayg commented 2026-10-15 19:21:27 +00:00
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Resource briefly unblocked at21:19:55 Europe/Berlin after147 minutes; original wrapper808578 started the API gate and exited101 before committing. Clippy caught one test-only assert-is-empty style error at user_host.rs:946; changed it to the required equality assertion and refreshed the guarded source checksum. Exact failed gate.

Current resumption state: same pushed head f0373ca27, API source pending with that assertion correction, final reactor still outside checkout. Exactly one replacement build-slot wrapper1725564 (exec session29421) is queued, using the same r7/build.sh and build-retry.log. Its verified-own-sleep watcher is active (session20273); the original wrapper/watcher have exited. No commit was made from the failed gate. Candidate images, admission, size and final fast remain pending. No owned perf workloads remain running.

Resource briefly unblocked at21:19:55 Europe/Berlin after147 minutes; original wrapper808578 started the API gate and exited101 before committing. Clippy caught one test-only assert-is-empty style error at user_host.rs:946; changed it to the required equality assertion and refreshed the guarded source checksum. [Exact failed gate](https://git.kayg.org/attachments/a3363a24-bb5c-43a1-8b43-7b1af99d8e8a). Current resumption state: same pushed head f0373ca27, API source pending with that assertion correction, final reactor still outside checkout. Exactly one replacement build-slot wrapper1725564 (exec session29421) is queued, using the same r7/build.sh and build-retry.log. Its verified-own-sleep watcher is active (session20273); the original wrapper/watcher have exited. No commit was made from the failed gate. Candidate images, admission, size and final fast remain pending. No owned perf workloads remain running.
kayg commented 2026-10-15 19:27:55 +00:00
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Step committed/pushed: 183c1e5c90 prepares ordered Ack coalescing in user_host.rs with three real-socket/PTY-backed regressions. Existing runtime caller still selects immediate mode, so this atomic preparation does not enable coalescing. Source checksum includes the corrected equality assertion. No frame, dependency, timer, per-peer field or default change.

Gate through one build-slot: workspace fmt plus explicit opt-in module formatting, all-target clippy with host-diagnostics,compact-history and -D warnings, library tests and real-host lifecycle tests. Verbatim functional summaries (durations are gate output, not performance evidence):

test result: ok. 158 passed; 0 failed; 21 ignored; 0 measured; 0 filtered out; finished in 81.38s
test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.09s

Full feature gate.

The same wrapper1725564 now builds the exact preparation-head baseline image, then restores/gates the prepared reactor and commits it only on success. Short uninstrumented baseline a0 is running on the perf VM under its own lock/owner file. Candidate comparison, unchanged7200-second segmented admission, size and final fast remain pending.

Step committed/pushed: 183c1e5c90ad66ccf7eeab57f5f57bd91cf52fa0 prepares ordered Ack coalescing in user_host.rs with three real-socket/PTY-backed regressions. Existing runtime caller still selects immediate mode, so this atomic preparation does not enable coalescing. Source checksum includes the corrected equality assertion. No frame, dependency, timer, per-peer field or default change. Gate through one build-slot: workspace fmt plus explicit opt-in module formatting, all-target clippy with host-diagnostics,compact-history and -D warnings, library tests and real-host lifecycle tests. Verbatim functional summaries (durations are gate output, not performance evidence): ``` test result: ok. 158 passed; 0 failed; 21 ignored; 0 measured; 0 filtered out; finished in 81.38s test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.09s ``` [Full feature gate](https://git.kayg.org/attachments/61a17196-4787-407b-99e5-ca2b50c9a448). The same wrapper1725564 now builds the exact preparation-head baseline image, then restores/gates the prepared reactor and commits it only on success. Short uninstrumented baseline a0 is running on the perf VM under its own lock/owner file. Candidate comparison, unchanged7200-second segmented admission, size and final fast remain pending.
kayg commented 2026-10-15 19:41:44 +00:00
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Step committed/pushed: f342326e1d bounds a host round to eight shared4-KiB short-read budgets, dispatches ready input before output-byte hints, preserves the independent rotating bulk turn, and enables the ordered Ack-coalescing mode. Granted promotions alone cancel older bulk entries. Silent-program writable visits and final read settles keep Ack progress. No scheduler setting, default selection, new timer or per-session allocation.

The first reactor gate caught an unused immediate wrapper; ordinary settles now use that entrypoint instead of adding a lint exception. The reactor-only retry passed workspace/explicit module fmt, all-target host-diagnostics,compact-history clippy -D warnings, library and real-host lifecycle tests. Verbatim functional summaries:

test result: ok. 160 passed; 0 failed; 21 ignored; 0 measured; 0 filtered out; finished in 104.80s
test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.65s

Full gate.

Exact gated static measurement images are built. Minimal opt-in image:2524832→2526432 bytes (+1600); diagnostic image:2537736→2539304 (+1568). This is the opt-in image delta; default static sizes and full fast remain unverified for this head. All build-slot wrappers/watchers for these completed steps have exited. Paired short runs now compare183c1e5c9 (immediate-mode API preparation) against f342326e1 with the same1000-session commands/cadence/thresholds, separately locked. The unchanged7200-active-second admission remains pending.

A preliminary uninstrumented8cd baseline(a0,180s/warm120) has settled700-probe p50=8.632ms,p99=18.517ms,highest batch p99=18.615ms; this is a short comparison, not admission. The all-task syscall trace adds substantial overhead; a follow-up keeps all102 scheduler identities and limits syscalls to host plus two representative shells. Its data and all-stage cohort work are being checked. No after-fix latency claim yet.

Step committed/pushed: f342326e1d0d6ab54ede29868cce2f89fc441730 bounds a host round to eight shared4-KiB short-read budgets, dispatches ready input before output-byte hints, preserves the independent rotating bulk turn, and enables the ordered Ack-coalescing mode. Granted promotions alone cancel older bulk entries. Silent-program writable visits and final read settles keep Ack progress. No scheduler setting, default selection, new timer or per-session allocation. The first reactor gate caught an unused immediate wrapper; ordinary settles now use that entrypoint instead of adding a lint exception. The reactor-only retry passed workspace/explicit module fmt, all-target host-diagnostics,compact-history clippy -D warnings, library and real-host lifecycle tests. Verbatim functional summaries: ``` test result: ok. 160 passed; 0 failed; 21 ignored; 0 measured; 0 filtered out; finished in 104.80s test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.65s ``` [Full gate](https://git.kayg.org/attachments/caf88f2b-c8c0-45c7-bb45-5247f5757ed2). Exact gated static measurement images are built. Minimal opt-in image:2524832→2526432 bytes (+1600); diagnostic image:2537736→2539304 (+1568). This is the opt-in image delta; default static sizes and full fast remain unverified for this head. All build-slot wrappers/watchers for these completed steps have exited. Paired short runs now compare183c1e5c9 (immediate-mode API preparation) against f342326e1 with the same1000-session commands/cadence/thresholds, separately locked. The unchanged7200-active-second admission remains pending. A preliminary uninstrumented8cd baseline(a0,180s/warm120) has settled700-probe p50=8.632ms,p99=18.517ms,highest batch p99=18.615ms; this is a short comparison, not admission. The all-task syscall trace adds substantial overhead; a follow-up keeps all102 scheduler identities and limits syscalls to host plus two representative shells. Its data and all-stage cohort work are being checked. No after-fix latency claim yet.
kayg commented 2026-10-15 20:10:35 +00:00
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r7 paired short result (180s/warm120, original1000-session commands/cadence/thresholds, perf VM):

Source Settled p50 Settled p99 Highest batch p99 Host median CPU
183c1e5c9 immediate-mode baseline 7.470ms 14.918ms 17.511ms 0.70%
f342326e1 bounded/coalescing candidate 12.181ms 27.069ms 27.410ms 1.30%

Both have1000 responsive survivors, fd/thread growth0, PSS growth4KiB, and identical3240580 delivered bytes over the settled counter interval. CPU ticks over that interval42→73; no performance acceptance. Baseline first/last settled loads0.22/0.61/0.92→0.08/0.50/0.86; candidate0.42/0.61/0.80→0.15/0.50/0.74. Baseline summary, candidate summary, baseline raw, candidate raw.

Concrete new feedback path at f342326e1: user_host_reactor.rs:707 keeps a logical Ack when readable output has not received its global read allowance; Registry::sync uses user_host.rs:329 input_reply.is_some() to keep EPOLLOUT armed. The denied-read cohort therefore repeats control housekeeping on writable notifications until its PTY turn. Deterministic regression combines the actual registry/kernel readiness, an exhausted eight-read allowance, rotating read selection, and real Ack/output socket bytes. It fails1/1 on logical-Ack writability: red. An earlier draft requested immediate Ack delivery and used an empty test filter; it is discarded and is not evidence.

Proposed narrow correction: distinguish fresh Ack deferral (keep writable fallback for a silent program) from deferral backed by queued PTY service (suppress only logical-Ack writable interest). Actual buffered bytes, explicit state and input-only replies retain normal interest; the final settle after the queued attempt sends Ack even if that attempt reads nothing. Reuse the same deferral predicate for queueing and interest. No timer, new allocation, wire/frame change or default change. Implementing and gating this correction before any full admission run.

The f342326e1 image is also in a lower-overhead stage/scheduler repeat(s1); the preceding baseline(s0) matched1800/1800 probes,303710 host records and768641 scheduler/syscall events with zero overruns. Its worst probe18.494ms waits17.697ms written→read; host7.269ms and shell9.043ms runnable overlap that interval. Whole cohort21.714ms contains140 parses totaling0.540ms and140 frame builds totaling0.022ms, including preceding output; no diagnostic dump overlap. Detailed receipts and candidate attribution follow. Default size/full fast and unchanged7200-second admission remain pending.

r7 paired short result (180s/warm120, original1000-session commands/cadence/thresholds, perf VM): | Source | Settled p50 | Settled p99 | Highest batch p99 | Host median CPU | |---|---:|---:|---:|---:| |183c1e5c9 immediate-mode baseline|7.470ms|14.918ms|17.511ms|0.70%| |f342326e1 bounded/coalescing candidate|12.181ms|27.069ms|27.410ms|1.30%| Both have1000 responsive survivors, fd/thread growth0, PSS growth4KiB, and identical3240580 delivered bytes over the settled counter interval. CPU ticks over that interval42→73; no performance acceptance. Baseline first/last settled loads0.22/0.61/0.92→0.08/0.50/0.86; candidate0.42/0.61/0.80→0.15/0.50/0.74. [Baseline summary](https://git.kayg.org/attachments/a8208f49-9d6d-41b7-a4a0-c7d54265a67f), [candidate summary](https://git.kayg.org/attachments/2aafdb8c-16ee-4a9a-bab4-4ee35202576f), [baseline raw](https://git.kayg.org/attachments/51deaeee-53ba-4102-80cb-56c55e20e365), [candidate raw](https://git.kayg.org/attachments/8002547b-f46d-494c-be07-17926dcdd7dd). Concrete new feedback path at f342326e1: user_host_reactor.rs:707 keeps a logical Ack when readable output has not received its global read allowance; Registry::sync uses user_host.rs:329 input_reply.is_some() to keep EPOLLOUT armed. The denied-read cohort therefore repeats control housekeeping on writable notifications until its PTY turn. Deterministic regression combines the actual registry/kernel readiness, an exhausted eight-read allowance, rotating read selection, and real Ack/output socket bytes. It fails1/1 on logical-Ack writability: [red](https://git.kayg.org/attachments/dfc9beaa-ce38-44f5-8805-bc21b8333b4d). An earlier draft requested immediate Ack delivery and used an empty test filter; it is discarded and is not evidence. Proposed narrow correction: distinguish fresh Ack deferral (keep writable fallback for a silent program) from deferral backed by queued PTY service (suppress only logical-Ack writable interest). Actual buffered bytes, explicit state and input-only replies retain normal interest; the final settle after the queued attempt sends Ack even if that attempt reads nothing. Reuse the same deferral predicate for queueing and interest. No timer, new allocation, wire/frame change or default change. Implementing and gating this correction before any full admission run. The f342326e1 image is also in a lower-overhead stage/scheduler repeat(s1); the preceding baseline(s0) matched1800/1800 probes,303710 host records and768641 scheduler/syscall events with zero overruns. Its worst probe18.494ms waits17.697ms written→read; host7.269ms and shell9.043ms runnable overlap that interval. Whole cohort21.714ms contains140 parses totaling0.540ms and140 frame builds totaling0.022ms, including preceding output; no diagnostic dump overlap. Detailed receipts and candidate attribution follow. Default size/full fast and unchanged7200-second admission remain pending.
kayg commented 2026-10-15 20:40:19 +00:00
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r7 trace finding: lower-overhead paired stage captures keep scheduler events for all102 owned tasks and syscalls for host + shells971/993. Same180s/warm120/1000-session workload plus100 untimed PID setup commands, perf VM4vCPU/Linux6.12.111; both match1800/1800 probes with zero drops/overruns. All five owned short-run scopes are inactive with empty ControlGroup; both scheduler and wakeup instances for s0/s1 are absent.

Host syscall count over the diagnostic Baseline s0 f342326e1 s1
epoll_ctl 60 38404
epoll_pwait 6715 9792
epoll_ctl in settled window 20 12542

Fresh logical Ack interest introduces registration churn, while read-denied logical Acks add repeated control visits. No timing subtraction or sole-cause claim; both traces still miss5ms. s0 initial/final loads: 0.82/1.00/1.14 → 0.50/1.07/1.18. s1 initial/final loads: 0.04/0.27/0.56 → 0.18/0.60/0.67.
Baseline stages, candidate stages, baseline raw, candidate raw, exact trace source, cleanup.

Queued-read interest correction now passes the exact1-test regression, including kernel registration and Ack/output bytes after both successful and empty queued service: green. Wider gate caught a four-boolean helper; folded readable/read-granted into one queued-read argument, renamed the internal type AckMode, and reran that1-test check successfully. No lint exception, timer, new allocation or default change. Fresh Acks retain the existing writable fallback; their registration cost is still a separate unresolved cost to measure after this correction.

Resumption: pushed head remains f342326e1. Two source files contain the pending correction. Current prepared-v2 bundle contains the current patch, both source checksums, guarded build-interest.sh and commit message; it supersedes the earlier standalone patch. Exactly one replacement build-slot wrapper2227265 (session83257) waits, watched by session19439. Logs build-interest-retry.log / slot-watch-interest-retry.log. The script gates both modules, commits/pushes only on success, then writes v2-head.txt and distinct admission-v2/stages-v2 artifacts. Full admission, final default-size delta and scripts/verify fast remain pending. No live owned perf fixtures.

r7 trace finding: lower-overhead paired stage captures keep scheduler events for all102 owned tasks and syscalls for host + shells971/993. Same180s/warm120/1000-session workload plus100 untimed PID setup commands, perf VM4vCPU/Linux6.12.111; both match1800/1800 probes with zero drops/overruns. All five owned short-run scopes are inactive with empty ControlGroup; both scheduler and wakeup instances for s0/s1 are absent. | Host syscall count over the diagnostic | Baseline s0 | f342326e1 s1 | |---|---:|---:| | epoll_ctl |60|38404| | epoll_pwait |6715|9792| | epoll_ctl in settled window |20|12542| Fresh logical Ack interest introduces registration churn, while read-denied logical Acks add repeated control visits. No timing subtraction or sole-cause claim; both traces still miss5ms. s0 initial/final loads: 0.82/1.00/1.14 → 0.50/1.07/1.18. s1 initial/final loads: 0.04/0.27/0.56 → 0.18/0.60/0.67. [Baseline stages](https://git.kayg.org/attachments/b4b153c7-8495-4f5f-80d8-6e81b7297017), [candidate stages](https://git.kayg.org/attachments/5899e5c4-617e-4193-8d03-6aeb56ddb780), [baseline raw](https://git.kayg.org/attachments/464b22a2-6ebe-4133-9828-6b4945c191b9), [candidate raw](https://git.kayg.org/attachments/7c034f79-d4ef-4bf5-abee-8ce5bbfac853), [exact trace source](https://git.kayg.org/attachments/dc6fab3b-50da-4774-8643-4bc3ae7fa53b), [cleanup](https://git.kayg.org/attachments/bbd0af60-109b-4dff-aa9e-4a571ceb27e1). Queued-read interest correction now passes the exact1-test regression, including kernel registration and Ack/output bytes after both successful and empty queued service: [green](https://git.kayg.org/attachments/d2649163-1393-483b-a0b3-6feda6207f02). Wider gate caught a four-boolean helper; folded readable/read-granted into one queued-read argument, renamed the internal type AckMode, and reran that1-test check successfully. No lint exception, timer, new allocation or default change. Fresh Acks retain the existing writable fallback; their registration cost is still a separate unresolved cost to measure after this correction. Resumption: pushed head remains f342326e1. Two source files contain the pending correction. [Current prepared-v2 bundle](https://git.kayg.org/attachments/258509d6-8d50-4ff3-a0a4-0cdaff125c9a) contains the current patch, both source checksums, guarded build-interest.sh and commit message; it supersedes the earlier standalone patch. Exactly one replacement build-slot wrapper2227265 (session83257) waits, watched by session19439. Logs build-interest-retry.log / slot-watch-interest-retry.log. The script gates both modules, commits/pushes only on success, then writes v2-head.txt and distinct admission-v2/stages-v2 artifacts. Full admission, final default-size delta and scripts/verify fast remain pending. No live owned perf fixtures.
kayg commented 2026-10-15 20:57:50 +00:00
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Step committed/pushed: 77e9cd88d1 suppresses logical-Ack EPOLLOUT only while an already queued PTY attempt supplies progress. Fresh Acks retain the silent-program writable fallback. The same predicate protects actual wire bytes, state fences, input-only links and ended sessions. Final settlement sends Ack after an empty attempt too. No timer, allocation, default selection or frame change.

The wider gate caught four boolean arguments; the final internal AckMode constructor takes incoming/writable/queued-read state and the exact kernel/wire regression was rerun1/1. Full build-slot gate then passed fmt, explicit opt-in formatting, all-target host-diagnostics,compact-history clippy -D warnings, library and real-host lifecycle tests. Verbatim functional summaries:

test result: ok. 161 passed; 0 failed; 21 ignored; 0 measured; 0 filtered out; finished in 63.53s
test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.82s

Full gate.

Static opt-in minimal image2526816 bytes (+384 vsf342326e1, +1984 vsimmediate-mode183c1e5c9); diagnostic2539688 bytes (+384 vsf342326e1). Default shipping size/final fast remain unverified. The build wrapper/watchers have exited. Reverse-order paired short runs now measure b2=77e9cd88d first, then a2=the same183c1e5c9 baseline; original1000-session commands/cadence/thresholds,180s/warm120, separate short perf-lock holds and owner files. b2 is waiting for the lock. Fresh-Ack registration churn and the5ms admission target remain unproven; unchanged7200-second segmented admission is still pending. No default change or deploy.

Step committed/pushed: 77e9cd88d1c4843361f74550d659000d4a7912fc suppresses logical-Ack EPOLLOUT only while an already queued PTY attempt supplies progress. Fresh Acks retain the silent-program writable fallback. The same predicate protects actual wire bytes, state fences, input-only links and ended sessions. Final settlement sends Ack after an empty attempt too. No timer, allocation, default selection or frame change. The wider gate caught four boolean arguments; the final internal AckMode constructor takes incoming/writable/queued-read state and the exact kernel/wire regression was rerun1/1. Full build-slot gate then passed fmt, explicit opt-in formatting, all-target host-diagnostics,compact-history clippy -D warnings, library and real-host lifecycle tests. Verbatim functional summaries: ``` test result: ok. 161 passed; 0 failed; 21 ignored; 0 measured; 0 filtered out; finished in 63.53s test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.82s ``` [Full gate](https://git.kayg.org/attachments/a4770eea-f275-4eb6-a1d2-c8ae35577a8f). Static opt-in minimal image2526816 bytes (+384 vsf342326e1, +1984 vsimmediate-mode183c1e5c9); diagnostic2539688 bytes (+384 vsf342326e1). Default shipping size/final fast remain unverified. The build wrapper/watchers have exited. Reverse-order paired short runs now measure b2=77e9cd88d first, then a2=the same183c1e5c9 baseline; original1000-session commands/cadence/thresholds,180s/warm120, separate short perf-lock holds and owner files. b2 is waiting for the lock. Fresh-Ack registration churn and the5ms admission target remain unproven; unchanged7200-second segmented admission is still pending. No default change or deploy.
kayg commented 2026-10-15 21:10:49 +00:00
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77e9cd88d paired short preflight (180 s, warmup 120 s, 1,000 sessions; unchanged commands/concurrency/cadence; not admission):

image p50 ms pooled p99 ms highest batch p99 ms median host CPU
candidate B2 77e9cd88d 6.478 10.014 12.029 0.60%
reverse baseline A2 183c1e5c9 6.024 9.255 9.478 0.60%

Both retain all 1,000 sessions; no fd/thread growth. Candidate recovers f342 regression, but does not improve matched baseline and fails 5 ms. No full admission claimed.

Candidate summary, baseline summary, candidate raw, baseline raw.

Next measured candidate: replace the rigid eight short-read allowance with a hard count ceiling plus a 500 us active-output deadline, starting after ready input dispatch. The deterministic regression will require cheap replies to share a turn within the deadline, and require remaining output to yield to input after it. No timer or idle polling; bulk keeps its independent bounded rotating turn. This tests queueing overhead, without changing admission workload or threshold.

77e9cd88d paired short preflight (180 s, warmup 120 s, 1,000 sessions; unchanged commands/concurrency/cadence; not admission): | image | p50 ms | pooled p99 ms | highest batch p99 ms | median host CPU | |---|---:|---:|---:|---:| | candidate B2 77e9cd88d | 6.478 | 10.014 | 12.029 | 0.60% | | reverse baseline A2 183c1e5c9 | 6.024 | 9.255 | 9.478 | 0.60% | Both retain all 1,000 sessions; no fd/thread growth. Candidate recovers f342 regression, but does not improve matched baseline and fails 5 ms. No full admission claimed. [Candidate summary](https://git.kayg.org/attachments/f6c6fbae-c325-40b4-ac96-f518cc281721), [baseline summary](https://git.kayg.org/attachments/fcb25976-1bc0-4bc9-bd75-2b1c6da1bec3), [candidate raw](https://git.kayg.org/attachments/0e4248e7-d9ab-406a-a7a7-e66a43fb24eb), [baseline raw](https://git.kayg.org/attachments/2b066028-8548-4a8c-9789-95e1a5069f3c). Next measured candidate: replace the rigid eight short-read allowance with a hard count ceiling plus a 500 us active-output deadline, starting after ready input dispatch. The deterministic regression will require cheap replies to share a turn within the deadline, and require remaining output to yield to input after it. No timer or idle polling; bulk keeps its independent bounded rotating turn. This tests queueing overhead, without changing admission workload or threshold.
kayg commented 2026-10-15 21:15:11 +00:00
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Step completed: fdb3d0342 (pushed). Short replies now share up to 64 bounded reads within a 500 us elapsed-output deadline started after ready input dispatch. Independent bulk rotation remains bounded; no timer or per-session field.

Regression first: actual one test fails at the ninth cheap reply under the old fixed-eight allowance; then passes with deadline expiry, independent bulk progress and generation wrap checks. Full affected-code gate: fmt and explicit feature rustfmt clean; clippy all-target host-diagnostics,compact-history -D warnings clean; 162 library tests passed, 21 ignored; 5 real-process lifecycle tests passed.

Red, green, complete gate.

Exact-head opt-in images are being built via build-slot. This is a measured candidate, not a claim that the admission target passes. Default unchanged.

Step completed: fdb3d0342 (pushed). Short replies now share up to 64 bounded reads within a 500 us elapsed-output deadline started after ready input dispatch. Independent bulk rotation remains bounded; no timer or per-session field. Regression first: actual one test fails at the ninth cheap reply under the old fixed-eight allowance; then passes with deadline expiry, independent bulk progress and generation wrap checks. Full affected-code gate: fmt and explicit feature rustfmt clean; clippy all-target host-diagnostics,compact-history -D warnings clean; 162 library tests passed, 21 ignored; 5 real-process lifecycle tests passed. [Red](https://git.kayg.org/attachments/9051d3d7-19e1-4c05-a5f9-4b53f804501f), [green](https://git.kayg.org/attachments/c9f362f2-8fb7-4a4b-8083-dc424b28a215), [complete gate](https://git.kayg.org/attachments/a1086348-177e-4005-b621-d56ba8c575d1). Exact-head opt-in images are being built via build-slot. This is a measured candidate, not a claim that the admission target passes. Default unchanged.
kayg commented 2026-10-15 21:18:28 +00:00
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Documentation step a0ed7818a pushed: research/process-per-user/README.md now describes the actual input-first ready dispatch, shared short-read/deadline bounds, independent bulk continuation, and fresh versus queued-read Ack interest. It explicitly leaves mixed-soak latency unadmitted. Checked git diff --check and cargo fmt --all --check; no executable changes.

Exact fdb3d0342 opt-in images: minimal 2,527,392 bytes (+576 vs 77e9cd88d, +2,560 vs 183c1e5c9); diagnostic 2,540,232 (+544 vs 77e9cd88d). These are not default shipping-size deltas. A guarded scripts/verify fast at a0ed7818a is queued through build-slot; independent TypeScript checks will run if a Rust failure stops the dispatcher. No default change or deploy.

Documentation step a0ed7818a pushed: research/process-per-user/README.md now describes the actual input-first ready dispatch, shared short-read/deadline bounds, independent bulk continuation, and fresh versus queued-read Ack interest. It explicitly leaves mixed-soak latency unadmitted. Checked git diff --check and cargo fmt --all --check; no executable changes. Exact fdb3d0342 opt-in images: minimal 2,527,392 bytes (+576 vs 77e9cd88d, +2,560 vs 183c1e5c9); diagnostic 2,540,232 (+544 vs 77e9cd88d). These are not default shipping-size deltas. A guarded scripts/verify fast at a0ed7818a is queued through build-slot; independent TypeScript checks will run if a Rust failure stops the dispatcher. No default change or deploy.
kayg commented 2026-10-15 21:22:45 +00:00
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Next isolated implementation candidate, after the currently running default gate: replace fresh logical-Ack EPOLLOUT toggles with a bounded next-turn local continuation. Diagnostic evidence already attached: baseline60 versus candidate38,404 epoll_ctl calls over the same180s, and settled20 versus12,542. Source: user_host_reactor.rs Registry::sync peer-writable selection and settle_with_ack_mode publishing Fresh through normal can_write. This identifies an avoidable cost, not the sole cause of slow batches.

The continuation will use one spare bit in the existing slot membership byte and a deduplicated host-wide queue capped by admitted slots. Collect kernel input readiness before servicing it; a due continuation must flush even when fresh input arrives, so silent programs cannot defer Ack indefinitely. It adds no timer or idle wakeup. Actual queued wire bytes retain writable interest. Account queue capacity through additive ack_fallback_bytes in opt-in ownership JSON; frozen wire and default behavior remain unchanged. A failing real socket/PTY regression will check interest, deduplication, silent completion and other membership bits before the correction. Performance remains conditional on unchanged admission.

Next isolated implementation candidate, after the currently running default gate: replace fresh logical-Ack EPOLLOUT toggles with a bounded next-turn local continuation. Diagnostic evidence already attached: baseline60 versus candidate38,404 epoll_ctl calls over the same180s, and settled20 versus12,542. Source: user_host_reactor.rs Registry::sync peer-writable selection and settle_with_ack_mode publishing Fresh through normal can_write. This identifies an avoidable cost, not the sole cause of slow batches. The continuation will use one spare bit in the existing slot membership byte and a deduplicated host-wide queue capped by admitted slots. Collect kernel input readiness before servicing it; a due continuation must flush even when fresh input arrives, so silent programs cannot defer Ack indefinitely. It adds no timer or idle wakeup. Actual queued wire bytes retain writable interest. Account queue capacity through additive `ack_fallback_bytes` in opt-in ownership JSON; frozen wire and default behavior remain unchanged. A failing real socket/PTY regression will check interest, deduplication, silent completion and other membership bits before the correction. Performance remains conditional on unchanged admission.
kayg commented 2026-10-15 21:24:20 +00:00
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fdb3d0342 short paired preflight (perf VM4vCPU/Linux6.12.111, 180s/warm120, unchanged1000-session commands/cadence/concurrency/thresholds; not admission):

image settled p50 ms pooled p99 ms highest batch p99 ms median host CPU
B3 fdb3d0342 7.331 16.121 16.441 0.70%
reverse A3 183c1e5c9 7.968 26.446 48.279 0.80%

All1000 sessions responsive, fd/thread growth0, PSS growth4KiB in both. Settled start/end load: B3 0.34/0.61/0.78 ->0.12/0.50/0.72; A3 0.58/0.90/0.87 ->0.21/0.74/0.82. The candidate is faster in this pair, but variance is large and every-batch5ms still fails. No full admission claim. All comparisons complete, with no owned comparison workload left running.

Candidate summary, baseline summary, candidate raw, baseline raw.

A same-image low-overhead owned-task scheduler/syscall capture (s2) is running in its own short perf-lock scope; diagnostic only. Full default fast gate on a0ed7818a is running through build-slot. Prepared next-turn Ack continuation remains outside checkout until the gate finishes; tracked tree is clean except the pre-existing scripts/pycache/ directory.

fdb3d0342 short paired preflight (perf VM4vCPU/Linux6.12.111, 180s/warm120, unchanged1000-session commands/cadence/concurrency/thresholds; not admission): | image | settled p50 ms | pooled p99 ms | highest batch p99 ms | median host CPU | |---|---:|---:|---:|---:| | B3 fdb3d0342 |7.331|16.121|16.441|0.70%| | reverse A3 183c1e5c9 |7.968|26.446|48.279|0.80%| All1000 sessions responsive, fd/thread growth0, PSS growth4KiB in both. Settled start/end load: B3 0.34/0.61/0.78 ->0.12/0.50/0.72; A3 0.58/0.90/0.87 ->0.21/0.74/0.82. The candidate is faster in this pair, but variance is large and every-batch5ms still fails. No full admission claim. All comparisons complete, with no owned comparison workload left running. [Candidate summary](https://git.kayg.org/attachments/83aee252-2cea-486e-8052-3351a53bea80), [baseline summary](https://git.kayg.org/attachments/02099ddc-f26b-4adf-ad1d-313ac05b3fed), [candidate raw](https://git.kayg.org/attachments/5b830800-e948-41c5-83f3-26001a50b3d9), [baseline raw](https://git.kayg.org/attachments/827a8527-a14b-40b4-b46c-22c638062ae3). A same-image low-overhead owned-task scheduler/syscall capture (s2) is running in its own short perf-lock scope; diagnostic only. Full default fast gate on a0ed7818a is running through build-slot. Prepared next-turn Ack continuation remains outside checkout until the gate finishes; tracked tree is clean except the pre-existing scripts/__pycache__/ directory.
kayg commented 2026-10-15 21:29:19 +00:00
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Exact fdb3d0342 owned-task stage capture s2 completed (diagnostic only; 180s/warm120/1000 sessions plus untimed PID setup): 1,800/1,800 probes matched,299,513 host stage records,880,775 scheduler/syscall events,zero overruns. All comparison and s2 scopes inactive/empty; no private trace instances remain.

Slowest settled probe session942/batch17: RTT19.4315ms; reader-send->host input queue2.7221ms; queue->PTY-written0.002301ms; PTY-written->PTY-read10.5622ms; VT0.004916ms; frame build0.000064ms; socket syscall0.003468ms; reader-delivery lower bound6.1133ms. During written->read, shell scheduled-running upper0.324ms/runnable0.441ms/sleeping9.7972ms; host running-upper2.9822/runnable5.132/sleeping2.448ms. The shell was mostly already asleep; host service and scheduler delay matter. These overlapping stages and traced scheduler bounds cannot be added/subtracted from uninstrumented admission.

Whole cohort17 spans23.7279ms: host running-upper6.986/runnable8.724/sleeping8.0179ms; all122 VT parses total0.604916ms; all122 frame builds0.018010ms;173 socket writes2.492385ms wall (0.701385ms running upper,1.791ms runnable); no diagnostic-dump overlap. Fresh Ack registration remains costly:36,520 epoll_ctl over180s,13,738 in settled60s. This supports testing the already-proposed local continuation; it does not identify a sole cause or satisfy5ms.

Correlated stages/scheduler, whole cohort, syscalls, raw, cleanup.

The prototype is not selected by the browser/server launcher. This measured path is the real local wire client -> per-user host -> real PTY/shell -> VT -> frame -> Unix socket -> reader. There is no integrated browser/server->per-user-host path to timestamp; browser stages are not invented or conflated with this evidence.

Exact fdb3d0342 owned-task stage capture s2 completed (diagnostic only; 180s/warm120/1000 sessions plus untimed PID setup): 1,800/1,800 probes matched,299,513 host stage records,880,775 scheduler/syscall events,zero overruns. All comparison and s2 scopes inactive/empty; no private trace instances remain. Slowest settled probe session942/batch17: RTT19.4315ms; reader-send->host input queue2.7221ms; queue->PTY-written0.002301ms; PTY-written->PTY-read10.5622ms; VT0.004916ms; frame build0.000064ms; socket syscall0.003468ms; reader-delivery lower bound6.1133ms. During written->read, shell scheduled-running upper0.324ms/runnable0.441ms/sleeping9.7972ms; host running-upper2.9822/runnable5.132/sleeping2.448ms. The shell was mostly already asleep; host service and scheduler delay matter. These overlapping stages and traced scheduler bounds cannot be added/subtracted from uninstrumented admission. Whole cohort17 spans23.7279ms: host running-upper6.986/runnable8.724/sleeping8.0179ms; all122 VT parses total0.604916ms; all122 frame builds0.018010ms;173 socket writes2.492385ms wall (0.701385ms running upper,1.791ms runnable); no diagnostic-dump overlap. Fresh Ack registration remains costly:36,520 epoll_ctl over180s,13,738 in settled60s. This supports testing the already-proposed local continuation; it does not identify a sole cause or satisfy5ms. [Correlated stages/scheduler](https://git.kayg.org/attachments/941fec20-f234-47ea-99b2-737cd38f6d60), [whole cohort](https://git.kayg.org/attachments/6051afdb-dc1d-4040-afbc-87cf83661d6c), [syscalls](https://git.kayg.org/attachments/db7f31ca-102d-4282-9c8d-68bbadf5f58a), [raw](https://git.kayg.org/attachments/9a943444-4293-4275-9128-6c18eb7ac2e4), [cleanup](https://git.kayg.org/attachments/93dd490e-3490-4fd2-9ba2-54605f5ed02d). The prototype is not selected by the browser/server launcher. This measured path is the real local wire client -> per-user host -> real PTY/shell -> VT -> frame -> Unix socket -> reader. There is no integrated browser/server->per-user-host path to timestamp; browser stages are not invented or conflated with this evidence.
kayg commented 2026-10-15 21:31:24 +00:00
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Milestone gate at a0ed7818aa (build-slot, completed):

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Verbatim static-size failures:

PT_INTERP: absent; size: 22277392 bytes; cap: 22204304 bytes; delta: +73088 bytes
binary exceeds the 22204304-byte size budget: 22277392 bytes
PT_INTERP: absent; size: 19705112 bytes; cap: 19638744 bytes; delta: +66368 bytes
binary exceeds the 19638744-byte size budget: 19705112 bytes
PT_INTERP: absent; size: 22277392 bytes; cap: 22204304 bytes; delta: +73088 bytes
binary exceeds the 22204304-byte size budget: 22277392 bytes

scripts/verify fast exit=1
independent ts_verify_fast exit=0

Default shipping sizes are unchanged from recorded r7 start: x86 22,277,392 bytes, ARM19,705,112 bytes; delta vs recorded task base b182529f is +1,504/+400 bytes, within the requested16KiB allowance. The repository absolute caps still fail; they were not changed or waived. All other Rust rows pass. Independent TypeScript compiler/build/bundle/tests pass (37 final client tests,0 failures); no overall fast pass is claimed.

Full fast transcript, independent TypeScript, exit codes.

Next-turn Ack regression now fails1/1 under old interest selection and passes1/1 with the correction, including an actual kernel poll and exact silent-Ack bytes. Current two-file correction is being gated via one build-slot wrapper before commit/push; full admission and final-head fast remain pending. No owned perf workload is active.

Milestone gate at a0ed7818aa5470aa1cc5f10caf0a8429784b6c41 (build-slot, completed): ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` Verbatim static-size failures: ``` PT_INTERP: absent; size: 22277392 bytes; cap: 22204304 bytes; delta: +73088 bytes binary exceeds the 22204304-byte size budget: 22277392 bytes PT_INTERP: absent; size: 19705112 bytes; cap: 19638744 bytes; delta: +66368 bytes binary exceeds the 19638744-byte size budget: 19705112 bytes PT_INTERP: absent; size: 22277392 bytes; cap: 22204304 bytes; delta: +73088 bytes binary exceeds the 22204304-byte size budget: 22277392 bytes ``` scripts/verify fast exit=1 independent ts_verify_fast exit=0 Default shipping sizes are unchanged from recorded r7 start: x86 22,277,392 bytes, ARM19,705,112 bytes; delta vs recorded task base b182529f is +1,504/+400 bytes, within the requested16KiB allowance. The repository absolute caps still fail; they were not changed or waived. All other Rust rows pass. Independent TypeScript compiler/build/bundle/tests pass (37 final client tests,0 failures); no overall fast pass is claimed. [Full fast transcript](https://git.kayg.org/attachments/842921f7-cae5-4ab9-9557-ad30a4c8892a), [independent TypeScript](https://git.kayg.org/attachments/159ba667-5e33-4fa5-a52a-f3cc20a0710c), [exit codes](https://git.kayg.org/attachments/5d03b831-d68b-4a64-a199-47c587d27a11). Next-turn Ack regression now fails1/1 under old interest selection and passes1/1 with the correction, including an actual kernel poll and exact silent-Ack bytes. Current two-file correction is being gated via one build-slot wrapper before commit/push; full admission and final-head fast remain pending. No owned perf workload is active.
kayg commented 2026-10-15 21:37:53 +00:00
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Committed/pushed598ddfdaaaa8cc324d16bd85b832f7945b217680: fresh logical Acks use one deduplicated local next-turn continuation, replacing temporary EPOLLOUT registration. Kernel readiness and all ready input precede that continuation. Due service cannot renew deferral on fresh input. Actual wire bytes and non-coalescible replies retain writable progress. No idle timer or per-session allocation; one existing membership bit, bounded host queue, additive ack_fallback_bytes ownership field. Frozen wire/default unchanged.

Regression fails1/1 with old interest selection, then passes1/1 checking actual kernel poll, deduplication, silent completion with incoming input, and preservation of bulk/timer bits. Build-slot gate passes fmt/explicit feature formatting/clippy all-targets -D warnings. Verbatim summaries:

test result: ok. 163 passed; 0 failed; 21 ignored; 0 measured; 0 filtered out; finished in 80.96s
test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.35s

Red, green, full gate.

Documentation-only b11fed1278 pushed, correcting the old fresh-writable fallback description (diff check/fmt pass). Opt-in minimal2,529,216 bytes (+1,824 vs fdb3d0342, +4,384 vs183c1e5c9); diagnostic2,541,864 (+1,632 vs fdb3d0342). Default final-head gate/size still pending.

Paired b4=598ddfdaa then a4=fdb3d0342 now waits/runs under separate short perf-lock holds, same original shell workload/thresholds. A separate diagnostic-only g1 trial shortens the workload interpreter thread-switch interval to test whether the soak Wakeups thread contends with its socket reader; it is explicitly marked diagnostic, not admission. No workload/threshold or shipping scheduler change, no inference until results. Full7200-second unchanged admission remains pending.

Committed/pushed598ddfdaaaa8cc324d16bd85b832f7945b217680: fresh logical Acks use one deduplicated local next-turn continuation, replacing temporary EPOLLOUT registration. Kernel readiness and all ready input precede that continuation. Due service cannot renew deferral on fresh input. Actual wire bytes and non-coalescible replies retain writable progress. No idle timer or per-session allocation; one existing membership bit, bounded host queue, additive ack_fallback_bytes ownership field. Frozen wire/default unchanged. Regression fails1/1 with old interest selection, then passes1/1 checking actual kernel poll, deduplication, silent completion with incoming input, and preservation of bulk/timer bits. Build-slot gate passes fmt/explicit feature formatting/clippy all-targets -D warnings. Verbatim summaries: ``` test result: ok. 163 passed; 0 failed; 21 ignored; 0 measured; 0 filtered out; finished in 80.96s test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.35s ``` [Red](https://git.kayg.org/attachments/35a68fae-888a-4818-8512-6bc60c313961), [green](https://git.kayg.org/attachments/c27c0ad9-51e7-4bae-a599-f8c48086fc43), [full gate](https://git.kayg.org/attachments/55427316-844d-4cb1-9b74-235c8ea7bdeb). Documentation-only b11fed1278ca41443ce0e5136eff85804f7e558c pushed, correcting the old fresh-writable fallback description (diff check/fmt pass). Opt-in minimal2,529,216 bytes (+1,824 vs fdb3d0342, +4,384 vs183c1e5c9); diagnostic2,541,864 (+1,632 vs fdb3d0342). Default final-head gate/size still pending. Paired b4=598ddfdaa then a4=fdb3d0342 now waits/runs under separate short perf-lock holds, same original shell workload/thresholds. A separate diagnostic-only g1 trial shortens the workload interpreter thread-switch interval to test whether the soak Wakeups thread contends with its socket reader; it is explicitly marked diagnostic, not admission. No workload/threshold or shipping scheduler change, no inference until results. Full7200-second unchanged admission remains pending.
kayg commented 2026-10-15 21:47:15 +00:00
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Next diagnosis: the 500us interactive allowance uses elapsed time from the end of input dispatch. Classification/control metadata and off-CPU time can expire it before cheap PTY replies are read, potentially pushing a reply cohort into one rotating bulk read per turn. This is a hypothesis, not a root-cause claim. Current source: user_host_reactor.rs start_output_round/read_interactive_at.

Proposed additive opt-in diagnostic stages:15=global output-round start (offset=round,bytes=budget microseconds,extra=read count cap);16=interactive-budget denial (offset=session slot,bytes=already granted count,extra reason mask1=count2=elapsed). Session0/fd-1 marks these as host-wide, not a peer identity. Existing14 stage codes/record layout remain unchanged; older reports already ignore unknown codes. All calls disappear from non-diagnostic builds. No workload, threshold, default, timer or parser change. This gives direct budget timestamps/reasons, rather than inferring expiry from unrelated stages. Existing bounded numeric serialization tests and full feature gates will run before commit.

Next diagnosis: the 500us interactive allowance uses elapsed time from the end of input dispatch. Classification/control metadata and off-CPU time can expire it before cheap PTY replies are read, potentially pushing a reply cohort into one rotating bulk read per turn. This is a hypothesis, not a root-cause claim. Current source: user_host_reactor.rs start_output_round/read_interactive_at. Proposed additive opt-in diagnostic stages:15=global output-round start (offset=round,bytes=budget microseconds,extra=read count cap);16=interactive-budget denial (offset=session slot,bytes=already granted count,extra reason mask1=count2=elapsed). Session0/fd-1 marks these as host-wide, not a peer identity. Existing14 stage codes/record layout remain unchanged; older reports already ignore unknown codes. All calls disappear from non-diagnostic builds. No workload, threshold, default, timer or parser change. This gives direct budget timestamps/reasons, rather than inferring expiry from unrelated stages. Existing bounded numeric serialization tests and full feature gates will run before commit.
kayg commented 2026-10-15 22:04:49 +00:00
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Diagnostic correctness finding: ppu_stages.py::frame matches a marker plus CR/LF, while the unchanged timed Peer.receive completes on the registered marker bytes alone. If marker and newline cross frames, the stage report can select a later PTY read/socket write/reader receipt. Concrete r0 session907/batch14: native timed RTT4.814562ms, but reported post-socket reader delay19.302426ms, which cannot belong to that timed echo. The stage correlator has no consistency check against the timed endpoint.

Withdraw the r7 s0/s1/s2/s3/r0 per-probe causal attribution and stage-window/cohort conclusions pending corrected capture. Raw records remain available for audit. Native uninstrumented admission/preflight echo values, survivors/resources and whole-run syscall counts are unaffected: the5ms gate still fails, and Ack epoll_ctl reduction36,520->60 is valid. Do not infer a sole remaining cause from the newline-based windows, including the reader/counter wait hypothesis.

Fix now: diagnostic matching follows the actual registered, unfinished probe waiter, recording marker-byte end before any delimiter. Record send/receive active-clock bounds and reject a correlation whose receipt span exceeds its native timed RTT. Mark the corrected diagnostic receipt semantics explicitly and refuse legacy newline captures in the new reporter. Native wire/record layout, timed probe implementation, commands, cadence, thresholds and default remain unchanged. Add failing fragmented-marker-without-newline and inconsistent-span tests first. The process-counter candidate remains outside checkout and is not adopted without corrected evidence. Host-budget stages d83529a76 are pushed/gated and can be combined with the corrected matcher.

Diagnostic correctness finding: ppu_stages.py::frame matches a marker plus CR/LF, while the unchanged timed Peer.receive completes on the registered marker bytes alone. If marker and newline cross frames, the stage report can select a later PTY read/socket write/reader receipt. Concrete r0 session907/batch14: native timed RTT4.814562ms, but reported post-socket reader delay19.302426ms, which cannot belong to that timed echo. The stage correlator has no consistency check against the timed endpoint. Withdraw the r7 s0/s1/s2/s3/r0 per-probe causal attribution and stage-window/cohort conclusions pending corrected capture. Raw records remain available for audit. Native uninstrumented admission/preflight echo values, survivors/resources and whole-run syscall counts are unaffected: the5ms gate still fails, and Ack epoll_ctl reduction36,520->60 is valid. Do not infer a sole remaining cause from the newline-based windows, including the reader/counter wait hypothesis. Fix now: diagnostic matching follows the actual registered, unfinished probe waiter, recording marker-byte end before any delimiter. Record send/receive active-clock bounds and reject a correlation whose receipt span exceeds its native timed RTT. Mark the corrected diagnostic receipt semantics explicitly and refuse legacy newline captures in the new reporter. Native wire/record layout, timed probe implementation, commands, cadence, thresholds and default remain unchanged. Add failing fragmented-marker-without-newline and inconsistent-span tests first. The process-counter candidate remains outside checkout and is not adopted without corrected evidence. Host-budget stages d83529a76 are pushed/gated and can be combined with the corrected matcher.
kayg commented 2026-10-15 22:10:45 +00:00
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Diagnostic correction committed/pushed in module steps:9daee9526 matcher + regression;4c82f95b9 reporter + clock/legacy checks. New matcher uses the registered unfinished waiter and marker-byte end, not CR/LF. Offline correlation requires finite active-clock bounds whose span cannot exceed native RTT; old newline captures are refused. Native timed echo/workload/thresholds/default untouched.

Two focused tests fail before the fix (marker without newline, receipt span exceeding native RTT). Module matcher gate7/7; full benchmark functional suite61/61; fmt/diff checks clean. Red, matcher gate, full61-test gate. Previous causal stage claims remain withdrawn until corrected capture; original echo metrics and whole-run syscall counts remain valid.

Host budget diagnostics d83529a76 also pushed after fmt/clippy/163 library +5 real-host tests pass: gate. Additive stage15=start and16=count/elapsed denial, same bounded numeric layout; calls disappear from non-diagnostic builds. Minimal image2,529,216 bytes (same size as598ddfdaa, different checksum); diagnostic2,542,312 (+448 bytes). No claim of binary identity or latency improvement.

Corrected r1 capture now owns its short perf-lock scope (owner file confirms process-per-user ppu-soak-r7-diag-r1). It uses the d835 diagnostic image, corrected matcher/reporter, reader+counter syscall/scheduler observation and host budget markers. It is diagnostic only. Current pushed head4c82f95b9; tracked tree clean except pre-existing scripts/pycache/. Full7200s admission and final-head fast are pending;5ms is not achieved. No default change/deploy/handoff work.

Diagnostic correction committed/pushed in module steps:9daee9526 matcher + regression;4c82f95b9 reporter + clock/legacy checks. New matcher uses the registered unfinished waiter and marker-byte end, not CR/LF. Offline correlation requires finite active-clock bounds whose span cannot exceed native RTT; old newline captures are refused. Native timed echo/workload/thresholds/default untouched. Two focused tests fail before the fix (marker without newline, receipt span exceeding native RTT). Module matcher gate7/7; full benchmark functional suite61/61; fmt/diff checks clean. [Red](https://git.kayg.org/attachments/e0225367-b58d-48f9-9eec-1eb399304f1c), [matcher gate](https://git.kayg.org/attachments/a92261ee-f66f-49fa-a8b2-4f200a8f57aa), [full61-test gate](https://git.kayg.org/attachments/afdbb596-3deb-40c7-8abc-92414804cfd6). Previous causal stage claims remain withdrawn until corrected capture; original echo metrics and whole-run syscall counts remain valid. Host budget diagnostics d83529a76 also pushed after fmt/clippy/163 library +5 real-host tests pass: [gate](https://git.kayg.org/attachments/e101493f-0c18-4d5f-8d5e-1a4247bb4fa9). Additive stage15=start and16=count/elapsed denial, same bounded numeric layout; calls disappear from non-diagnostic builds. Minimal image2,529,216 bytes (same size as598ddfdaa, different checksum); diagnostic2,542,312 (+448 bytes). No claim of binary identity or latency improvement. Corrected r1 capture now owns its short perf-lock scope (owner file confirms process-per-user ppu-soak-r7-diag-r1). It uses the d835 diagnostic image, corrected matcher/reporter, reader+counter syscall/scheduler observation and host budget markers. It is diagnostic only. Current pushed head4c82f95b9; tracked tree clean except pre-existing scripts/__pycache__/. Full7200s admission and final-head fast are pending;5ms is not achieved. No default change/deploy/handoff work.
kayg commented 2026-10-15 22:51:03 +00:00
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Corrected r1 capture (native d83529a76; diagnostic matcher/reporter4c82f95b9) validates1800/1800 correlations and finite active-clock bounds,340,365 host stages,862,480 scheduler/syscall events,zero overruns. Perf VM4vCPU/Linux6.12.111; initial/final load0.82/1.15/1.41 ->0.48/1.33/1.49. These are diagnostic timings, never admission.

Session971/probe14: native RTT23.803897ms; input send->queued2.809803ms, queue->PTY-written0.007003ms, written->marker-read19.317403ms, VT0.002939ms, frame build0.000075ms, socket0.005998ms, reader lower1.612691ms. Shell running upper0.427/runnable13.654/sleeping5.236403ms; first shell read13.681999ms after PTY write. Host running upper2.599403/runnable16.360/sleeping0.358ms. Reader post-delivery running1.558542/runnable0.054149/sleeping0ms, no futex wait there. Shell executes60 read +119 pselect6 +3 write calls for that60-byte probe. Own verified fixtures execute/usr/bin/bash. Scheduling delay dominates this sample; no sole-cause or subtraction claim.

Worst corrected probe900/17 RTT30.638408ms: written->marker-read24.656167ms, host runnable19.313ms, reader post-delivery sleep0. It has one elapsed-budget denial after24.424846ms with38 grants in that round, but this does not establish that expiry caused the preceding wait. Do not include post-soak1000-survivor confirmations in budget-denial statistics.
Validated stages/scheduler, complete report, fixture programs, exact diagnostic wrapper, raw.

Canonical r7a admission now running: native d835 minimal image (2529216bytes), original primary driver/commands/cadence/concurrency/thresholds,7200 active seconds,warm600,1740s lock segments,owner file,same fixture frozen between holds. First9 completed postwarm cohorts (partial, not a segment verdict): pooled p50 9.569604/p99 64.972494ms, peak batch72.701579ms at630s. Target still fails. Partial raw snapshot. Warmup inventory confirms all CPUs0-3,scope weight10000,scope/parents no CPU quota,zero throttling: inventory. No resource increase or benchmark-time subtraction.

Documentation4feb822e4 pushed; fmt/diff checks pass. Full head gate is queued through one build-slot wrapper3188197. Author checklist uses the actual review-template.md; performance remains unadmitted. After r7a's first hold, separately locked r2/r3 diagnostics wait: scheduler-only observation, then host-only100us normal-slice request using existing helper (all shells unchanged). A collection-observation run g3 (720s/warm600, original reader and current native image) also waits; it records collection spans without disabling/forcing collection. An earlier queued g2 pointed at an old artifact; stopped only its verified waiting coordinator4080941 before any fixture, replaced with g3/current image. No scheduler/interpreter setting adopted. Prototype/default/handoff unchanged. Current tracked tree clean apart from pre-existing scripts/pycache/. Final admission/fast/size still pending.

Corrected r1 capture (native d83529a76; diagnostic matcher/reporter4c82f95b9) validates1800/1800 correlations and finite active-clock bounds,340,365 host stages,862,480 scheduler/syscall events,zero overruns. Perf VM4vCPU/Linux6.12.111; initial/final load0.82/1.15/1.41 ->0.48/1.33/1.49. These are diagnostic timings, never admission. Session971/probe14: native RTT23.803897ms; input send->queued2.809803ms, queue->PTY-written0.007003ms, written->marker-read19.317403ms, VT0.002939ms, frame build0.000075ms, socket0.005998ms, reader lower1.612691ms. Shell running upper0.427/runnable13.654/sleeping5.236403ms; first shell read13.681999ms after PTY write. Host running upper2.599403/runnable16.360/sleeping0.358ms. Reader post-delivery running1.558542/runnable0.054149/sleeping0ms, no futex wait there. Shell executes60 read +119 pselect6 +3 write calls for that60-byte probe. Own verified fixtures execute/usr/bin/bash. Scheduling delay dominates this sample; no sole-cause or subtraction claim. Worst corrected probe900/17 RTT30.638408ms: written->marker-read24.656167ms, host runnable19.313ms, reader post-delivery sleep0. It has one elapsed-budget denial after24.424846ms with38 grants in that round, but this does not establish that expiry caused the preceding wait. Do not include post-soak1000-survivor confirmations in budget-denial statistics. [Validated stages/scheduler](https://git.kayg.org/attachments/3fcab2b7-5d95-4853-9da2-5aae12bbe9ce), [complete report](https://git.kayg.org/attachments/f3437209-61cb-4dfe-a465-25cf60b465e2), [fixture programs](https://git.kayg.org/attachments/a7950eae-91f3-48be-89e7-6cc0c68b2ae8), [exact diagnostic wrapper](https://git.kayg.org/attachments/30e2d7e2-48df-4fa1-b3e3-72cbe35be115), [raw](https://git.kayg.org/attachments/7ee8f722-7eb0-4b00-bbac-607c011f7a40). Canonical r7a admission now running: native d835 minimal image (2529216bytes), original primary driver/commands/cadence/concurrency/thresholds,7200 active seconds,warm600,1740s lock segments,owner file,same fixture frozen between holds. First9 completed postwarm cohorts (partial, not a segment verdict): pooled p50 9.569604/p99 64.972494ms, peak batch72.701579ms at630s. Target still fails. [Partial raw snapshot](https://git.kayg.org/attachments/13d14bf6-73a2-4c65-99af-2af601ed0701). Warmup inventory confirms all CPUs0-3,scope weight10000,scope/parents no CPU quota,zero throttling: [inventory](https://git.kayg.org/attachments/251cb978-e71b-4788-bee2-58bcbd45da0e). No resource increase or benchmark-time subtraction. Documentation4feb822e4 pushed; fmt/diff checks pass. Full head gate is queued through one build-slot wrapper3188197. Author checklist uses the actual review-template.md; performance remains unadmitted. After r7a's first hold, separately locked r2/r3 diagnostics wait: scheduler-only observation, then host-only100us normal-slice request using existing helper (all shells unchanged). A collection-observation run g3 (720s/warm600, original reader and current native image) also waits; it records collection spans without disabling/forcing collection. An earlier queued g2 pointed at an old artifact; stopped only its verified waiting coordinator4080941 before any fixture, replaced with g3/current image. No scheduler/interpreter setting adopted. Prototype/default/handoff unchanged. Current tracked tree clean apart from pre-existing scripts/__pycache__/. Final admission/fast/size still pending.
kayg commented 2026-10-15 23:00:20 +00:00
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r7 admission r7a, segment 1 completed on d83529a762 (minimal feature image; head 4feb822e4 changes diagnostics/docs only). Original 7,200-active-second workload, warmup 600 s, seed 270205 and thresholds unchanged. Held the perf lock for 1,740 s; same fixture is frozen between holds.

Segment Cohorts after warmup p50 pooled p99 peak batch p99 Gate
1 113 (11,300 probes) 9.216945 ms 30.072780 ms 72.701579 ms FAIL, >5 ms

All 172 cohorts including warmup: p50 9.289564 ms, pooled p99 35.540275 ms, peak batch p99 84.985752 ms. No admission claim. The remaining segments retain this fixture. Scheduler-only r2, host-only slice diagnostic r3, and collection-observation g3 are queued before admission resumes; none changes the canonical client/workload. Full head gate remains running through build-slot.

Exact per-segment report, raw samples and coordinator receipts.

r7 admission r7a, segment 1 completed on d83529a7623ad0f590c561c3acae444cc336bdde (minimal feature image; head 4feb822e4 changes diagnostics/docs only). Original 7,200-active-second workload, warmup 600 s, seed 270205 and thresholds unchanged. Held the perf lock for 1,740 s; same fixture is frozen between holds. | Segment | Cohorts after warmup | p50 | pooled p99 | peak batch p99 | Gate | | --- | ---: | ---: | ---: | ---: | --- | | 1 | 113 (11,300 probes) | 9.216945 ms | 30.072780 ms | 72.701579 ms | FAIL, >5 ms | All 172 cohorts including warmup: p50 9.289564 ms, pooled p99 35.540275 ms, peak batch p99 84.985752 ms. No admission claim. The remaining segments retain this fixture. Scheduler-only r2, host-only slice diagnostic r3, and collection-observation g3 are queued before admission resumes; none changes the canonical client/workload. Full head gate remains running through build-slot. [Exact per-segment report](https://git.kayg.org/attachments/6744a48e-6b28-45d2-913d-478a048c0eff), [raw samples and coordinator receipts](https://git.kayg.org/attachments/68f3188f-8180-4750-b684-71fcaa1fa9ec).
kayg commented 2026-10-15 23:01:00 +00:00
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Head verification milestone, 4feb822e43, through build-slot. Performance acceptance remains open; this is not a completion claim.

scripts/verify fast exit 1, verbatim final table:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Only static size caps fail: x86_64 22,277,392 / 22,204,304 bytes (+73,088); aarch64 19,705,112 / 19,638,744 (+66,368). Default artifact sizes match r7 starting head; versus recorded task base b182529fcc deltas remain +1,504 / +400 bytes (within requested 16 KiB delta). No cap changed or waived. Independent ts_verify_fast exit 0.

Full fast output, independent TypeScript output, exact exit statuses.

Head verification milestone, 4feb822e4354d0fdd2dbfc78b3a51126677b673c, through build-slot. Performance acceptance remains open; this is not a completion claim. `scripts/verify fast` exit 1, verbatim final table: ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` Only static size caps fail: x86_64 22,277,392 / 22,204,304 bytes (+73,088); aarch64 19,705,112 / 19,638,744 (+66,368). Default artifact sizes match r7 starting head; versus recorded task base b182529fcc38ed65c53ad323b55e444beaa4e2a7 deltas remain +1,504 / +400 bytes (within requested 16 KiB delta). No cap changed or waived. Independent ts_verify_fast exit 0. [Full fast output](https://git.kayg.org/attachments/9f0d866f-1bc6-4fb2-b8dd-a5931932383f), [independent TypeScript output](https://git.kayg.org/attachments/86875262-f73e-4408-a7c8-1b4f46bd9402), [exact exit statuses](https://git.kayg.org/attachments/486081c2-2938-410c-bddd-50719fe232b7).
kayg commented 2026-10-15 23:08:09 +00:00
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Fresh scheduler-only diagnostics r2/r3 on the perf VM, d83529a762. Same native echo/client/workload, 180 s with 120 s warmup; NOT admission. Both 1,800/1,800 markers matched, zero trace overruns. No syscall tracing.

Run Host normal slice settled p50 pooled p99 peak batch p99 host wakeup-to-running p99
r2 2,100 us (unchanged) 12.507 ms 31.380 ms 31.726 ms 7.772 ms
r3 100 us (host only) 6.829 ms 13.357 ms 13.791 ms 4.107 ms

This short sequential comparison is a candidate, not proof or adoption; a reverse-order minimal-image pair h1/h2 is queued without stage tracing. No shell scheduler, class, nice value or global setting changed. r3 receipt verifies normal class/nice 0 before and after. Load r2 0.00/0.19/0.43 to 0.39/0.63/0.60; r3 0.39/0.63/0.60 to 0.50/1.27/0.94.

Additional corrected r2 evidence: session 993/probe15 RTT 25.628381 ms = ingress 4.631237 ms, queue 0.011574 ms, PTY write-to-marker-read 1.344664 ms, parse 0.003232 ms, post-socket reader delay lower bound 19.616188 ms (remaining frame/socket stages in raw report). Reader scheduled-running upper bound 12.207188 ms, runnable 7.399 ms, sleeping 0.010 ms in that post-delivery interval. Entire batch task counters: reader CPU 17.882107 ms, host CPU 4.675010 ms over 30.411814 ms. No causal attribution to GIL/collections yet. g3 observes collections without disabling or forcing them; it currently owns the lock while canonical r7a remains frozen.

Summary, r2 raw, r3 raw.

Fresh scheduler-only diagnostics r2/r3 on the perf VM, d83529a7623ad0f590c561c3acae444cc336bdde. Same native echo/client/workload, 180 s with 120 s warmup; NOT admission. Both 1,800/1,800 markers matched, zero trace overruns. No syscall tracing. | Run | Host normal slice | settled p50 | pooled p99 | peak batch p99 | host wakeup-to-running p99 | | --- | ---: | ---: | ---: | ---: | ---: | | r2 | 2,100 us (unchanged) | 12.507 ms | 31.380 ms | 31.726 ms | 7.772 ms | | r3 | 100 us (host only) | 6.829 ms | 13.357 ms | 13.791 ms | 4.107 ms | This short sequential comparison is a candidate, not proof or adoption; a reverse-order minimal-image pair h1/h2 is queued without stage tracing. No shell scheduler, class, nice value or global setting changed. r3 receipt verifies normal class/nice 0 before and after. Load r2 0.00/0.19/0.43 to 0.39/0.63/0.60; r3 0.39/0.63/0.60 to 0.50/1.27/0.94. Additional corrected r2 evidence: session 993/probe15 RTT 25.628381 ms = ingress 4.631237 ms, queue 0.011574 ms, PTY write-to-marker-read 1.344664 ms, parse 0.003232 ms, post-socket reader delay lower bound 19.616188 ms (remaining frame/socket stages in raw report). Reader scheduled-running upper bound 12.207188 ms, runnable 7.399 ms, sleeping 0.010 ms in that post-delivery interval. Entire batch task counters: reader CPU 17.882107 ms, host CPU 4.675010 ms over 30.411814 ms. No causal attribution to GIL/collections yet. g3 observes collections without disabling or forcing them; it currently owns the lock while canonical r7a remains frozen. [Summary](https://git.kayg.org/attachments/d8ea9e31-cf4a-4bf7-a4ed-1e01780d2032), [r2 raw](https://git.kayg.org/attachments/108e2c39-0c37-4502-b06b-d292b9d942a8), [r3 raw](https://git.kayg.org/attachments/a2baf78c-120c-457b-9e6c-033b8f5562ea).
kayg commented 2026-10-15 23:20:40 +00:00
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g3 collection-observation diagnosis finished; minimal d83529a762 image, 1,000 real sessions, original workload/echo implementation, 720 s/600 s warmup on the perf VM under one short lock hold. Diagnostic only; not admission.

Settled p50 6.457908 ms, pooled p99 13.008262 ms, peak batch p99 13.897812 ms: FAIL >5 ms. 249 paired collections, zero dropped events; none began with a registered unfinished primary probe waiter. The longest collection was 19.740355 ms (generation 2, collected 0), with zero primary waiters. Therefore this run does not support attributing the slow timed probes to interpreter collection pauses. No collection/threshold/switch-interval setting was changed; observed thresholds [2000,10,10], switch interval 0.005 s. The observer adds work and its result is not a general proof that collections can never overlap probes.

Canonical r7a has resumed its second 1,740 s hold on the same fixture and unchanged admission client. Remaining diagnoses: h1/h2 reverse-order minimal-image host-only slice pair; c1 bounded main-thread client profile. No further scheduler or client change adopted.

Collection spans and exact result, raw run and coordinator receipts.

g3 collection-observation diagnosis finished; minimal d83529a7623ad0f590c561c3acae444cc336bdde image, 1,000 real sessions, original workload/echo implementation, 720 s/600 s warmup on the perf VM under one short lock hold. Diagnostic only; not admission. Settled p50 6.457908 ms, pooled p99 13.008262 ms, peak batch p99 13.897812 ms: FAIL >5 ms. 249 paired collections, zero dropped events; none began with a registered unfinished primary probe waiter. The longest collection was 19.740355 ms (generation 2, collected 0), with zero primary waiters. Therefore this run does not support attributing the slow timed probes to interpreter collection pauses. No collection/threshold/switch-interval setting was changed; observed thresholds [2000,10,10], switch interval 0.005 s. The observer adds work and its result is not a general proof that collections can never overlap probes. Canonical r7a has resumed its second 1,740 s hold on the same fixture and unchanged admission client. Remaining diagnoses: h1/h2 reverse-order minimal-image host-only slice pair; c1 bounded main-thread client profile. No further scheduler or client change adopted. [Collection spans and exact result](https://git.kayg.org/attachments/7f4ce49b-95e4-494d-b95d-a6afa1594c34), [raw run and coordinator receipts](https://git.kayg.org/attachments/62b425b0-d581-4f57-9ab3-c4bdc60ae747).
kayg commented 2026-10-15 23:22:05 +00:00
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Corrected diagnostic input-path finding (NOT canonical admission attribution): client send-task queue prevents observation of output already delivered by the host. All 1,315 probes delivered before their cohort's last send_before stamp across r1/r2/r3 were observed after that stamp (320/450/545 respectively).

Concrete r2 batch13/session903: send_before_ns 201902214260098, socket_done_ns 201902214994076 (0.733978 ms later), receive_ns 201902235028577; original RTT20.780038 ms, post-delivery lower bound20.034501 ms. Entire cohort send span20.666481 ms; reader scheduled-running upper bound18.847481 ms, runnable1.752 ms, sleeping0.067 ms during that span. Counter scheduled-running0.577 ms; this does not establish GIL contention. Source: scripts/bench/ppu_soak.py:465 schedules100 echo coroutines; Peer.echo at223 awaits send then its marker Future; send at174 drains a small socket write synchronously when uncongested. Receive at183 cannot resume until ready sender work yields.

These are diagnostic captures with added stage/client allocation overhead; the20 ms sender cost must not be asserted for canonical r7a without a corresponding capture. g3 did not show collection overlap in the minimal client. Queued c1 profiles the minimal-image client without the stage hooks to identify its CPU call sites. No timed-client, workload, GC or threshold change is adopted; r7a remains unchanged.

All r2 cohort sender/delivery receipts, batch13 owned-task scheduler overlap. Original raw captures already linked above.

Corrected diagnostic input-path finding (NOT canonical admission attribution): client send-task queue prevents observation of output already delivered by the host. All 1,315 probes delivered before their cohort's last send_before stamp across r1/r2/r3 were observed after that stamp (320/450/545 respectively). Concrete r2 batch13/session903: send_before_ns 201902214260098, socket_done_ns 201902214994076 (0.733978 ms later), receive_ns 201902235028577; original RTT20.780038 ms, post-delivery lower bound20.034501 ms. Entire cohort send span20.666481 ms; reader scheduled-running upper bound18.847481 ms, runnable1.752 ms, sleeping0.067 ms during that span. Counter scheduled-running0.577 ms; this does not establish GIL contention. Source: scripts/bench/ppu_soak.py:465 schedules100 echo coroutines; Peer.echo at223 awaits send then its marker Future; send at174 drains a small socket write synchronously when uncongested. Receive at183 cannot resume until ready sender work yields. These are diagnostic captures with added stage/client allocation overhead; the20 ms sender cost must not be asserted for canonical r7a without a corresponding capture. g3 did not show collection overlap in the minimal client. Queued c1 profiles the minimal-image client without the stage hooks to identify its CPU call sites. No timed-client, workload, GC or threshold change is adopted; r7a remains unchanged. [All r2 cohort sender/delivery receipts](https://git.kayg.org/attachments/b4af9ea3-f3f9-4c8b-bc44-ad6c6f25ad30), [batch13 owned-task scheduler overlap](https://git.kayg.org/attachments/382c4059-c0ad-4649-8c26-a9421c5eae1c). Original raw captures already linked above.
kayg commented 2026-10-15 23:23:57 +00:00
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r7a admission attempt stopped early because segment1 had already failed; NOT a completed7,200-active-second soak. Do not infer admission or survivor-census success. Preserved all192 completed cohorts and original thresholds; no timed-client/workload changes.

Segment State settled cohorts p50 pooled p99 peak batch p99
1 full1,740s hold 113 9.216945 ms 30.072780 ms 72.701579 ms
2 stopped after about198s 20 7.151561 ms 23.587189 ms 24.341623 ms

Both fail5ms. Continuing the failed image for the remaining time would consume the shared VM while input-path diagnoses wait. A revised candidate requires a fresh full unchanged admission run. Signalled only verified coordinator4061790: exact source/run args, child fixture4063556 inside its matching cgroup, unique invocation description34058ef819ff49f680b63e34a705e891. Its coordinator retired its own scope; confirmed fixture PID absent, scope inactive, and removed only its private trace instance.

Queued h1/c1/h2 now run without waiting for this failed admission. Main branch head remains pushed4feb822e4354d0fdd2dbfc78b3a51126677b673c; final head gate already recorded above. No later code change or adoption.

Both segment reports, raw samples and segment events, identity-checked stop, cleanup confirmation.

r7a admission attempt stopped early because segment1 had already failed; NOT a completed7,200-active-second soak. Do not infer admission or survivor-census success. Preserved all192 completed cohorts and original thresholds; no timed-client/workload changes. | Segment | State | settled cohorts | p50 | pooled p99 | peak batch p99 | | --- | --- | ---: | ---: | ---: | ---: | | 1 | full1,740s hold | 113 | 9.216945 ms | 30.072780 ms | 72.701579 ms | | 2 | stopped after about198s | 20 | 7.151561 ms | 23.587189 ms | 24.341623 ms | Both fail5ms. Continuing the failed image for the remaining time would consume the shared VM while input-path diagnoses wait. A revised candidate requires a fresh full unchanged admission run. Signalled only verified coordinator4061790: exact source/run args, child fixture4063556 inside its matching cgroup, unique invocation description34058ef819ff49f680b63e34a705e891. Its coordinator retired its own scope; confirmed fixture PID absent, scope inactive, and removed only its private trace instance. Queued h1/c1/h2 now run without waiting for this failed admission. Main branch head remains pushed4feb822e4354d0fdd2dbfc78b3a51126677b673c; final head gate already recorded above. No later code change or adoption. [Both segment reports](https://git.kayg.org/attachments/a23f5549-bbde-4cc1-9ab1-e2ffce1ea0bb), [raw samples and segment events](https://git.kayg.org/attachments/0eafe18f-4475-4a67-b4fd-6b283db62f32), [identity-checked stop](https://git.kayg.org/attachments/92d9e1a2-2bfa-40c4-bfb6-e855962333b6), [cleanup confirmation](https://git.kayg.org/attachments/e765fd7f-51be-45de-a719-1d56c3132eb8).
kayg commented 2026-10-15 23:42:14 +00:00
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h1 minimal-image host-only100us hint diagnostic finished: 1,000 sessions,180s/120s warmup, original client/commands/concurrency/cadence, no host stage logger. p50 6.299382ms, pooled p99 9.596585ms, peak batch p99 9.708460ms. Every settled cohort still exceeds5ms (p99 range6.788739–9.708460ms). All1,000 survivors responsive; fd/thread growth0, PSS growth4KiB. No admission claim or scheduler adoption. Getter receipt verifies host normal policy/nice0, runtime2,100,000→100,000ns after all children were created.

Queued/running: c1 minimal-client main-thread call profile; h2 default-scheduling reverse-order comparison; h3/h4 host-only10us/1us requests to test whether the kernel accepts them and whether a smaller slice helps. Setup rejection is not a timing result. All use short coordinator holds and their own scope, same d835 minimal binary. Current branch head remains pushed4feb822e4 with the final gate already recorded above.

h1 exact summary/cohorts, raw, exact external diagnostic drivers/observers.

h1 minimal-image host-only100us hint diagnostic finished: 1,000 sessions,180s/120s warmup, original client/commands/concurrency/cadence, no host stage logger. p50 6.299382ms, pooled p99 9.596585ms, peak batch p99 9.708460ms. Every settled cohort still exceeds5ms (p99 range6.788739–9.708460ms). All1,000 survivors responsive; fd/thread growth0, PSS growth4KiB. No admission claim or scheduler adoption. Getter receipt verifies host normal policy/nice0, runtime2,100,000→100,000ns after all children were created. Queued/running: c1 minimal-client main-thread call profile; h2 default-scheduling reverse-order comparison; h3/h4 host-only10us/1us requests to test whether the kernel accepts them and whether a smaller slice helps. Setup rejection is not a timing result. All use short coordinator holds and their own scope, same d835 minimal binary. Current branch head remains pushed4feb822e4 with the final gate already recorded above. [h1 exact summary/cohorts](https://git.kayg.org/attachments/0dfd92db-e9d3-4df4-8dd0-46583b17e353), [raw](https://git.kayg.org/attachments/7975d533-adad-4b11-ae5a-9596e66aeb4d), [exact external diagnostic drivers/observers](https://git.kayg.org/attachments/bce51ac1-f4fc-43fe-90e4-ceb2bd9b90f4).
kayg commented 2026-10-15 23:46:59 +00:00
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c1 client call-profile diagnosis finished on the current minimal image,180s/120s warmup, unchanged commands/timed echo. Diagnostic pooled p50 9.095101ms, p99 14.863048ms, peak batch p99 16.175157ms. NOT admission. All18 cohort profiles retained.

Correction to the initial label: the capture includes the wakeup-counter thread function ppu_soak.py:64 and select/read calls as well as the reader. It is an aggregate client profile, not isolated main-thread CPU. Default profile timers include waits and observer overhead; do not subtract them or claim exact CPU attribution. Useful call-count evidence: 1,800 socket sends,1,986 socket receives,10,056 readexactly entries,1,800 timeout creations across18 primary cohorts; original receive at ppu_soak.py:183, send at174, echo at223, and timeout/frame handling appear throughout. These do not establish the canonical72ms cause.

To reduce the per-probe diagnostic allocation artifact, queued a5 keeps fixed numeric receipt arrays and precomputed marker/command lookup tables allocated before the workload. It calls the unchanged native Peer.echo, records the same marker-byte endpoint and writer offsets, materializes dictionaries only after the timed workload, and retains scheduler-only tracing of verified owned tasks. It remains a diagnostic image/run, <=300s, no admission/threshold/client-interpreter change. h2/h3/h4 remain queued for default/10us/1us comparisons.

c1 exact profile summary, all profiles and original samples. a5 external source receipt follows.

c1 client call-profile diagnosis finished on the current minimal image,180s/120s warmup, unchanged commands/timed echo. Diagnostic pooled p50 9.095101ms, p99 14.863048ms, peak batch p99 16.175157ms. NOT admission. All18 cohort profiles retained. Correction to the initial label: the capture includes the wakeup-counter thread function ppu_soak.py:64 and select/read calls as well as the reader. It is an aggregate client profile, not isolated main-thread CPU. Default profile timers include waits and observer overhead; do not subtract them or claim exact CPU attribution. Useful call-count evidence: 1,800 socket sends,1,986 socket receives,10,056 readexactly entries,1,800 timeout creations across18 primary cohorts; original receive at ppu_soak.py:183, send at174, echo at223, and timeout/frame handling appear throughout. These do not establish the canonical72ms cause. To reduce the per-probe diagnostic allocation artifact, queued a5 keeps fixed numeric receipt arrays and precomputed marker/command lookup tables allocated before the workload. It calls the unchanged native Peer.echo, records the same marker-byte endpoint and writer offsets, materializes dictionaries only after the timed workload, and retains scheduler-only tracing of verified owned tasks. It remains a diagnostic image/run, <=300s, no admission/threshold/client-interpreter change. h2/h3/h4 remain queued for default/10us/1us comparisons. [c1 exact profile summary](https://git.kayg.org/attachments/a1cbaada-a6dc-4667-8429-afd3ae4af077), [all profiles and original samples](https://git.kayg.org/attachments/f39ead55-f546-4ef6-85eb-3f07e67701b9). a5 external source receipt follows.
kayg commented 2026-10-16 00:24:45 +00:00
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Remaining-diagnosis results at pushed head4feb822e4354d0fdd2dbfc78b3a51126677b673c. NO5ms acceptance and no scheduler/counter setting adopted. All recent perf fixtures are inactive/empty. Exact feature-size comparison against r7 starting8cd43caff is building through build-slot in a temporary detached scratch checkout; no source change.

Diagnostic seconds/warmup settled p50 pooled p99 peak batch p99
a5 fixed numeric receipts 180/120 6.759590ms 10.795787ms 11.363931ms
a6 native timing-point hooks 300/120 7.883483ms 14.091687ms 14.986846ms
p1 separate-process wakeup observer 180/120 6.356470ms 10.849127ms 11.185086ms

All retain1,000 sessions and original commands/concurrency/cadence/thresholds. These are diagnostics, NOT admission. a5 matches1,800/1,800,327,311 stage records,80,119 scheduler events; a6 matches3,000/3,000,514,745 stage records,127,600 scheduler events; zero drops/overruns. a6 adds four explicit observation hooks to a temporary driver copy rather than coroutine wrappers. Its fragmented-marker functional test preserves exact wire bytes, native echo results and offsets. Every captured RTT equals the original echo result exactly; receipt ns reconstruct that native monotonic sample in a certified unpaused hold. Native source in the assigned checkout is unchanged.

Concrete a6 batch26/session925: RTT15.173682ms, PTY write→marker-read12.444490ms; host scheduled-running upper bound1.869490ms, runnable10.519ms, sleeping0.056ms in that interval. None of the ten slowest settled probes overlaps diagnostic file flushing. Whole cohort CPU window18.089124ms: host CPU3.019648ms, reader CPU9.399196ms, counter CPU0.410250ms; scope CPU43.152ms includes concurrent load/collector/observation and is NOT an irreducible per-probe CPU bound. VT/frame work remains short. These identify scheduling/client contributions in captured bad batches; they do not fully establish the canonical72.701579ms peak's cause or a passing fix.

p1 changes only Wakeups: AST checks confirm Peer, workload, stability/thresholds and every other definition identical. Owned-process/live-count/reaping test passes. Runtime counts rise577→4451 across all18 samples, zero overruns;1,000 survivors,fd/thread growth0, PSS growth4KiB. It still fails5ms, so this observer candidate is not adopted.

Host-only100us hint h1 vs unchanged h2 gives pooled p99 9.596585 vs9.740185ms, peaks9.708460 vs10.054669ms; h2 has lower p50. No clear admitted gain. Fresh metadata-only helper verifies10us and1us requests round to100us, preserving normal class/nice0 and restoring its original2,100us. h3/h4 therefore produced setup rejection, not timing results.

a5 summary, a6 summary, p1 summary.
a5 raw, a6 raw, p1 raw.
Exact sources and functional receipts, a5 sources.
Hint comparison and kernel rounding, h2 raw, h3, h4.

Remaining-diagnosis results at pushed head4feb822e4354d0fdd2dbfc78b3a51126677b673c. NO5ms acceptance and no scheduler/counter setting adopted. All recent perf fixtures are inactive/empty. Exact feature-size comparison against r7 starting8cd43caff is building through build-slot in a temporary detached scratch checkout; no source change. | Diagnostic | seconds/warmup | settled p50 | pooled p99 | peak batch p99 | | --- | --- | ---: | ---: | ---: | | a5 fixed numeric receipts | 180/120 | 6.759590ms | 10.795787ms | 11.363931ms | | a6 native timing-point hooks | 300/120 | 7.883483ms | 14.091687ms | 14.986846ms | | p1 separate-process wakeup observer | 180/120 | 6.356470ms | 10.849127ms | 11.185086ms | All retain1,000 sessions and original commands/concurrency/cadence/thresholds. These are diagnostics, NOT admission. a5 matches1,800/1,800,327,311 stage records,80,119 scheduler events; a6 matches3,000/3,000,514,745 stage records,127,600 scheduler events; zero drops/overruns. a6 adds four explicit observation hooks to a temporary driver copy rather than coroutine wrappers. Its fragmented-marker functional test preserves exact wire bytes, native echo results and offsets. Every captured RTT equals the original echo result exactly; receipt ns reconstruct that native monotonic sample in a certified unpaused hold. Native source in the assigned checkout is unchanged. Concrete a6 batch26/session925: RTT15.173682ms, PTY write→marker-read12.444490ms; host scheduled-running upper bound1.869490ms, runnable10.519ms, sleeping0.056ms in that interval. None of the ten slowest settled probes overlaps diagnostic file flushing. Whole cohort CPU window18.089124ms: host CPU3.019648ms, reader CPU9.399196ms, counter CPU0.410250ms; scope CPU43.152ms includes concurrent load/collector/observation and is NOT an irreducible per-probe CPU bound. VT/frame work remains short. These identify scheduling/client contributions in captured bad batches; they do not fully establish the canonical72.701579ms peak's cause or a passing fix. p1 changes only Wakeups: AST checks confirm Peer, workload, stability/thresholds and every other definition identical. Owned-process/live-count/reaping test passes. Runtime counts rise577→4451 across all18 samples, zero overruns;1,000 survivors,fd/thread growth0, PSS growth4KiB. It still fails5ms, so this observer candidate is not adopted. Host-only100us hint h1 vs unchanged h2 gives pooled p99 9.596585 vs9.740185ms, peaks9.708460 vs10.054669ms; h2 has lower p50. No clear admitted gain. Fresh metadata-only helper verifies10us and1us requests round to100us, preserving normal class/nice0 and restoring its original2,100us. h3/h4 therefore produced setup rejection, not timing results. [a5 summary](https://git.kayg.org/attachments/8fd529a8-0b0b-4dc4-a742-e8ee7ea4e303), [a6 summary](https://git.kayg.org/attachments/95509a7e-3e67-4c52-8ac5-6cc7d4345312), [p1 summary](https://git.kayg.org/attachments/d16ea8e2-33ed-4467-b615-5d276e2824ff). [a5 raw](https://git.kayg.org/attachments/16070dd8-9b37-4cfe-8f4a-466791a7e437), [a6 raw](https://git.kayg.org/attachments/35bfd030-3861-4f59-bafd-6f82b84380d4), [p1 raw](https://git.kayg.org/attachments/9ce54694-5309-4985-8703-40e808b0d0f4). [Exact sources and functional receipts](https://git.kayg.org/attachments/4139fbce-7015-4aa3-a29d-f005cfce6f54), [a5 sources](https://git.kayg.org/attachments/f011474a-5fc1-4b26-8fe9-c7b28048010a). [Hint comparison and kernel rounding](https://git.kayg.org/attachments/b8846723-ac52-422d-941b-96995a21d299), [h2 raw](https://git.kayg.org/attachments/ccc55a80-da19-4241-bcf6-79cd368b5a18), [h3](https://git.kayg.org/attachments/22a79ffd-f42a-4987-a563-6d6a13c22567), [h4](https://git.kayg.org/attachments/0c42687f-fea0-45c8-ae5f-20768f896455).
kayg commented 2026-10-16 00:36:49 +00:00
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Committed/pushed7585c2e9d48e446d03317b39127787084614f064: correct the warmup comment that implied geometry changes force VT allocation. Lazy geometry records a bounded transcript; the comment now describes the actual behavior. Complete benchmark AST unchanged;61 functional checks pass, fmt/diff checks clean. No runtime/default/workload/threshold change.

The late-materialization lead is not supported: in a6 all90 light-session streams cross the4,096-byte prefix cap by112.147355s (first111.107402s). First lazy materialization must occur no later than that crossing; a snapshot can cause it sooner. This does not explain the later canonical630s peak. Per-session crossing ledger, AST identity, 61 checks.

Exact opt-in size at4feb822e4 against starting8cd43caff:2,524,832→2,529,216 bytes, +4,384 bytes within16KiB. The4feb image hash equals the measured d835 image hash d6bd211c5b449888903b3299e9304cef5c721aa7a828387e27f5bd2b4ca70515. Temporary detached baseline checkout removed. Exact build sources/hashes/flags.

New full7585 head gate and final feature-size refresh queued through the sole build-slot wrapper. All12 recent owned perf scopes are inactive/empty; cleanup check. No live own perf workload.5ms acceptance remains unmet; no new scheduling or observer candidate is adopted. No completed passing7,200s admission run exists.

Committed/pushed7585c2e9d48e446d03317b39127787084614f064: correct the warmup comment that implied geometry changes force VT allocation. Lazy geometry records a bounded transcript; the comment now describes the actual behavior. Complete benchmark AST unchanged;61 functional checks pass, fmt/diff checks clean. No runtime/default/workload/threshold change. The late-materialization lead is not supported: in a6 all90 light-session streams cross the4,096-byte prefix cap by112.147355s (first111.107402s). First lazy materialization must occur no later than that crossing; a snapshot can cause it sooner. This does not explain the later canonical630s peak. [Per-session crossing ledger](https://git.kayg.org/attachments/14c08447-ffa9-44e4-a2ea-505a4cb3d274), [AST identity](https://git.kayg.org/attachments/dc5a4131-359b-45bb-ade9-182d7092836a), [61 checks](https://git.kayg.org/attachments/800fb148-4142-4e80-b1e4-3a7469d37a1b). Exact opt-in size at4feb822e4 against starting8cd43caff:2,524,832→2,529,216 bytes, +4,384 bytes within16KiB. The4feb image hash equals the measured d835 image hash d6bd211c5b449888903b3299e9304cef5c721aa7a828387e27f5bd2b4ca70515. Temporary detached baseline checkout removed. [Exact build sources/hashes/flags](https://git.kayg.org/attachments/cb5705b7-65ca-4bea-a803-0a820f40eeea). New full7585 head gate and final feature-size refresh queued through the sole build-slot wrapper. All12 recent owned perf scopes are inactive/empty; [cleanup check](https://git.kayg.org/attachments/2c43680a-4465-49f1-acd3-35fad087b7a2). No live own perf workload.5ms acceptance remains unmet; no new scheduling or observer candidate is adopted. No completed passing7,200s admission run exists.
kayg commented 2026-10-16 00:48:36 +00:00
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Current-image priority repeat n1 also fails; no priority change adopted. This repeats the older r6 experiment after r7's input-before-output ordering/Ack changes, using the current minimal image and unchanged client/workload. Only owned host PID120728 changed nice0→-20 after creation; all1,000 owned shells verified nice0 before and after.180s/120s warmup: p50 8.240201ms, pooled p99 14.147116ms, peak batch p99 14.439616ms. Every settled cohort exceeds5ms.1,000 survivors,fd/thread growth0, PSS growth4KiB. The result supplies no passing fix; privileged launch is a limitation of this candidate. Its scope is inactive with empty ControlGroup. Summary, raw, exact driver.

CPU-receipt precision: the a6 cohort task/scope counters include census/observer work. The census's ns stamp follows its counter-read batch, so its published window is not an exact per-probe CPU sampling interval. Do not interpret the9.399ms reader delta as9.399ms inside an individual timed probe or as a lower bound. The separately intersected per-probe scheduler spans and native RTT/offset matching remain the causal timing evidence. No timing subtraction, metric replacement or admission claim.

Head remains pushed7585c2e9d. Full new-head gate is still queued via build-slot; earlier4feb gate and exact-size records remain attached. No live own perf fixture, no default change, no deployment. The5ms goal remains unmet.

Current-image priority repeat n1 also fails; no priority change adopted. This repeats the older r6 experiment after r7's input-before-output ordering/Ack changes, using the current minimal image and unchanged client/workload. Only owned host PID120728 changed nice0→-20 after creation; all1,000 owned shells verified nice0 before and after.180s/120s warmup: p50 8.240201ms, pooled p99 14.147116ms, peak batch p99 14.439616ms. Every settled cohort exceeds5ms.1,000 survivors,fd/thread growth0, PSS growth4KiB. The result supplies no passing fix; privileged launch is a limitation of this candidate. Its scope is inactive with empty ControlGroup. [Summary](https://git.kayg.org/attachments/56331cb1-4f24-48cf-a331-ec2c66f11b0f), [raw](https://git.kayg.org/attachments/969f4367-ab0c-4071-86be-a31e93aa4cbf), [exact driver](https://git.kayg.org/attachments/0197e8ca-ddc6-4f13-95da-ce8198b102b4). CPU-receipt precision: the a6 cohort task/scope counters include census/observer work. The census's ns stamp follows its counter-read batch, so its published window is not an exact per-probe CPU sampling interval. Do not interpret the9.399ms reader delta as9.399ms inside an individual timed probe or as a lower bound. The separately intersected per-probe scheduler spans and native RTT/offset matching remain the causal timing evidence. No timing subtraction, metric replacement or admission claim. Head remains pushed7585c2e9d. Full new-head gate is still queued via build-slot; earlier4feb gate and exact-size records remain attached. No live own perf fixture, no default change, no deployment. The5ms goal remains unmet.
kayg commented 2026-10-16 01:00:58 +00:00
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03:00 Europe/Berlin continuation state: pushed head7585c2e9d48e446d03317b39127787084614f064.5ms goal still unmet. No live own perf fixtures. Current final fast/minimal-size refresh is genuinely queued through build-slot, wrapper PID4143761; it has not entered the gate script. All four general leases are held by live wrappers (4065859,4003012,3744430,1904). Await normal lease release by those jobs; no priority-list/global setting change or foreign process signal. A watcher can wake only this verified wrapper's own sleep when a general lease is free.

Runner: /home/kayg/.cache/codex-scratch/process-per-user/evidence/r7/verify-r7-final.sh; outputs verify-fast-r7-final.log, verify-ts-r7-final.log, verify-fast-r7-final-status.log and size-final.json in that directory. Guarded source7585c2e9d; Cargo target /home/kayg/.cache/codex-scratch/process-per-user/target; short fixture root p6; TRACER_TEST_PORT4407. Only one wrapped command from this job. Exact8cd→4feb feature-size comparison completed+4,384B; temporary detached checkout removed. Earlier4feb full fast has all functional rows PASS and only pre-existing absolute static caps FAIL; complete output attached above. Current-head gate remains required before final handoff.

03:00 Europe/Berlin continuation state: pushed head7585c2e9d48e446d03317b39127787084614f064.5ms goal still unmet. No live own perf fixtures. Current final fast/minimal-size refresh is genuinely queued through build-slot, wrapper PID4143761; it has not entered the gate script. All four general leases are held by live wrappers (4065859,4003012,3744430,1904). Await normal lease release by those jobs; no priority-list/global setting change or foreign process signal. A watcher can wake only this verified wrapper's own sleep when a general lease is free. Runner: /home/kayg/.cache/codex-scratch/process-per-user/evidence/r7/verify-r7-final.sh; outputs verify-fast-r7-final.log, verify-ts-r7-final.log, verify-fast-r7-final-status.log and size-final.json in that directory. Guarded source7585c2e9d; Cargo target /home/kayg/.cache/codex-scratch/process-per-user/target; short fixture root p6; TRACER_TEST_PORT4407. Only one wrapped command from this job. Exact8cd→4feb feature-size comparison completed+4,384B; temporary detached checkout removed. Earlier4feb full fast has all functional rows PASS and only pre-existing absolute static caps FAIL; complete output attached above. Current-head gate remains required before final handoff.
kayg commented 2026-10-16 01:08:35 +00:00
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Final head gate is now running under the original build-slot wrapper, on 7585c2e9d4 (pushed). Rust fmt/clippy completed and server socket/input-credit tests are progressing. Final transcript: $HOME/.cache/codex-scratch/process-per-user/evidence/r7/verify-fast-r7-final.log; the wrapper also records independent TypeScript output if the full gate stops early, and rebuilds the exact-head opt-in feature image for the size delta. No admission success: r7a segment 1 pooled p99 30.072780 ms, peak batch p99 72.701579 ms; segment 2 was stopped partially. No subsequent diagnostic meets 5 ms. All owned perf fixtures are inactive; default unchanged.

Final head gate is now running under the original build-slot wrapper, on 7585c2e9d48e446d03317b39127787084614f064 (pushed). Rust fmt/clippy completed and server socket/input-credit tests are progressing. Final transcript: $HOME/.cache/codex-scratch/process-per-user/evidence/r7/verify-fast-r7-final.log; the wrapper also records independent TypeScript output if the full gate stops early, and rebuilds the exact-head opt-in feature image for the size delta. No admission success: r7a segment 1 pooled p99 30.072780 ms, peak batch p99 72.701579 ms; segment 2 was stopped partially. No subsequent diagnostic meets 5 ms. All owned perf fixtures are inactive; default unchanged.
kayg commented 2026-10-16 01:20:36 +00:00
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r7 final recorded state — acceptance NOT achieved. Head7585c2e9d48e446d03317b39127787084614f064 is pushed to process-per-user; default unchanged; no deploy. Input-first bounded reads and local Ack continuation are committed, with deterministic queueing/native socket tests. Corrected marker receipts are checked against the original native RTT; earlier invalid per-probe/cohort attribution remains withdrawn. Valid traces identify sampled host runnable delays and client sender/reader queueing, but do not fully attribute the canonical72.702ms peak or prove a passing fix. D128 remains deferred.

Unchanged admission r7a (1000sessions, original mix/commands/thresholds):

Lock segment Settled cohorts p50 ms Pooled p99 ms Peak batch p99 ms
1: full1740s hold 113 9.216945 30.072780 72.701579
2: partial~198s hold, then stopped 20 7.151561 23.587189 24.341623

Both fail5ms. This is NOT a completed7200-active-second soak or a successful final survivor census. Segment report, raw admission. Later diagnostic trials also fail; none of the scheduler/observer experiments was adopted. Latest native-point diagnostic a6 matches3000/3000 native RTTs with zero clock overruns; its worst sampled15.174ms probe includes10.519ms host runnable delay between PTY write/read. Per-cohort CPU counters include observer work and are not individual-probe CPU bounds. a6 ledger.

Final scripts/verify fast through build-slot, verbatim summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

scripts/verify fast exit=1. Only failures are existing absolute shipping size caps: x86 22277392/cap22204304 (+73088), ARM19705112/cap19638744 (+66368), unchanged since r7 start. No cap waiver or overall green claim. Full final gate. Independent ts_verify_fast exit=0: full TypeScript gate, statuses. Opt-in fmt/clippy,163 library tests+5 real-host tests,61 benchmark checks passed as recorded in step comments.

Exact-head opt-in musl binary2529216B versus r7 base8cd43caf2524832B: +4384B, within16384B. Head SHA256d6bd211c5b449888903b3299e9304cef5c721aa7a828387e27f5bd2b4ca70515 matches measured admission image. Exact size receipt.

Cleanup: all13 recent owned perf scopes inactive/empty; last scope. No owned temporary worktrees remain. Final wrapper exited; no active target users before deleting own23GB target. Evidence retained outside checkout; preexisting scripts/pycache untouched. Build cleanup, author checklist.

Outstanding: an actual input-path fix that meets5ms, followed by a full unchanged segmented admission with every segment passing. No completion/admission verdict.

r7 final recorded state — acceptance NOT achieved. Head7585c2e9d48e446d03317b39127787084614f064 is pushed to process-per-user; default unchanged; no deploy. Input-first bounded reads and local Ack continuation are committed, with deterministic queueing/native socket tests. Corrected marker receipts are checked against the original native RTT; earlier invalid per-probe/cohort attribution remains withdrawn. Valid traces identify sampled host runnable delays and client sender/reader queueing, but do not fully attribute the canonical72.702ms peak or prove a passing fix. D128 remains deferred. Unchanged admission r7a (1000sessions, original mix/commands/thresholds): | Lock segment | Settled cohorts | p50 ms | Pooled p99 ms | Peak batch p99 ms | |---|---:|---:|---:|---:| | 1: full1740s hold | 113 | 9.216945 | 30.072780 | 72.701579 | | 2: partial~198s hold, then stopped | 20 | 7.151561 | 23.587189 | 24.341623 | Both fail5ms. This is NOT a completed7200-active-second soak or a successful final survivor census. [Segment report](https://git.kayg.org/attachments/a23f5549-bbde-4cc1-9ab1-e2ffce1ea0bb), [raw admission](https://git.kayg.org/attachments/0eafe18f-4475-4a67-b4fd-6b283db62f32). Later diagnostic trials also fail; none of the scheduler/observer experiments was adopted. Latest native-point diagnostic a6 matches3000/3000 native RTTs with zero clock overruns; its worst sampled15.174ms probe includes10.519ms host runnable delay between PTY write/read. Per-cohort CPU counters include observer work and are not individual-probe CPU bounds. [a6 ledger](https://git.kayg.org/attachments/14c08447-ffa9-44e4-a2ea-505a4cb3d274). Final scripts/verify fast through build-slot, verbatim summary: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` scripts/verify fast exit=1. Only failures are existing absolute shipping size caps: x86 22277392/cap22204304 (+73088), ARM19705112/cap19638744 (+66368), unchanged since r7 start. No cap waiver or overall green claim. [Full final gate](https://git.kayg.org/attachments/0953b5d1-f2be-4595-8c20-05c5f897e172). Independent ts_verify_fast exit=0: [full TypeScript gate](https://git.kayg.org/attachments/5a770018-d5f4-448a-bc48-72c623fdc73f), [statuses](https://git.kayg.org/attachments/47af949c-5b76-4cb0-aedb-21087c637edc). Opt-in fmt/clippy,163 library tests+5 real-host tests,61 benchmark checks passed as recorded in step comments. Exact-head opt-in musl binary2529216B versus r7 base8cd43caf2524832B: +4384B, within16384B. Head SHA256d6bd211c5b449888903b3299e9304cef5c721aa7a828387e27f5bd2b4ca70515 matches measured admission image. [Exact size receipt](https://git.kayg.org/attachments/9ddac65a-23e4-47f1-aa24-aefb879f4d63). Cleanup: all13 recent owned perf scopes inactive/empty; [last scope](https://git.kayg.org/attachments/4971a03d-a602-4cd2-80cd-fe4c8b70563f). No owned temporary worktrees remain. Final wrapper exited; no active target users before deleting own23GB target. Evidence retained outside checkout; preexisting scripts/__pycache__ untouched. [Build cleanup](https://git.kayg.org/attachments/21878875-61b8-4832-9dca-df2c18401bb6), [author checklist](https://git.kayg.org/attachments/8bcaa2ac-9445-4d6b-bc93-caafb7869b9c). Outstanding: an actual input-path fix that meets5ms, followed by a full unchanged segmented admission with every segment passing. No completion/admission verdict.
kayg commented 2026-10-16 01:22:26 +00:00
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r8 start: branch process-per-user; head/base for this continuation 7585c2e9d4; origin/dev currently 492e1505ab (will fetch before baseline). Read #205 history; no parent per issue record. First compare identical 1000-session admission against current dev; then attribute slow batches with corrected marker matching, scheduler/off-CPU/fault/wakeup receipts. No default change, no merge/deploy. Existing untracked scripts/pycache/ retained.

r8 start: branch process-per-user; head/base for this continuation 7585c2e9d48e446d03317b39127787084614f064; origin/dev currently 492e1505ab6822078268344382f4d246d2c3d65e (will fetch before baseline). Read #205 history; no parent per issue record. First compare identical 1000-session admission against current dev; then attribute slow batches with corrected marker matching, scheduler/off-CPU/fault/wakeup receipts. No default change, no merge/deploy. Existing untracked scripts/__pycache__/ retained.
kayg commented 2026-10-16 01:25:18 +00:00
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r8 preparation complete: pushed 0f910ecc1 (independent shipping-shim fixture) and e8478aa63 (post-cohort load/lock/active-scope receipts). Original Peer.echo, marker reader, shell commands, seed, workload cadence and thresholds are reused unchanged. Aggregate baseline resource rows exclude shells; its pre-existing wakeup observer is explicitly first-shim-only. 67 benchmark checks pass; fmt/diff checks pass. Current dev pinned after fetch at 492e1505ab. Static minimal current-dev baseline build is waiting through the single build-slot wrapper; no measurement or runtime fix claimed. Perf VM currently has no perf or bpftrace executable; private tracefs scheduler/syscall/stack/fault/reclaim events are available, so attribution will use those without changing VM packages or global tracing.

r8 preparation complete: pushed 0f910ecc1 (independent shipping-shim fixture) and e8478aa63 (post-cohort load/lock/active-scope receipts). Original Peer.echo, marker reader, shell commands, seed, workload cadence and thresholds are reused unchanged. Aggregate baseline resource rows exclude shells; its pre-existing wakeup observer is explicitly first-shim-only. 67 benchmark checks pass; fmt/diff checks pass. Current dev pinned after fetch at 492e1505ab6822078268344382f4d246d2c3d65e. Static minimal current-dev baseline build is waiting through the single build-slot wrapper; no measurement or runtime fix claimed. Perf VM currently has no perf or bpftrace executable; private tracefs scheduler/syscall/stack/fault/reclaim events are available, so attribution will use those without changing VM packages or global tracing.
kayg commented 2026-10-16 01:31:49 +00:00
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r8 collector/report steps pushed: a2a02bb40 (numeric scheduler/syscall/kernel-stack/fault/reclaim collector), ed7bf86b7 (stage-window intersections with explicit unknown coverage), c70b562a0/47c597172 (scope CPU/control-ancestry audit). 74 benchmark checks pass; fmt/diff checks pass. Functional 10-second smoke: 100/100 exact marker correlations, 82,659 numeric events, 696 kernel wait stacks, 1,000/1,000 responsive survivors, zero trace overruns. This is collection validation, NOT admission. Both smoke scopes inactive/empty; private instances removed.

Three pre-existing orphan-shell scopes each sleep in pipe_read with <0.1s lifetime CPU. Per-batch scope CPU/lock receipts now distinguish idle presence from foreign activity; none was signalled. Initial inventory attached. Current-dev build still waits in the sole build-slot wrapper. Paired full 7,200-active-second/1,000-session comparison is prepared with seed270205, warm600, cadence/commands/thresholds unchanged, <=1740s holds and owner file. Baseline resource rows aggregate shims, exclude shells; its wakeup observer remains explicitly first-shim-only, so wakeup totals are not compared. No runtime fix, target change or D128 implementation claimed.

collector-check.tar.gz
tail-report-gate.log
perf-inventory.txt

r8 collector/report steps pushed: a2a02bb40 (numeric scheduler/syscall/kernel-stack/fault/reclaim collector), ed7bf86b7 (stage-window intersections with explicit unknown coverage), c70b562a0/47c597172 (scope CPU/control-ancestry audit). 74 benchmark checks pass; fmt/diff checks pass. Functional 10-second smoke: 100/100 exact marker correlations, 82,659 numeric events, 696 kernel wait stacks, 1,000/1,000 responsive survivors, zero trace overruns. This is collection validation, NOT admission. Both smoke scopes inactive/empty; private instances removed. Three pre-existing orphan-shell scopes each sleep in pipe_read with <0.1s lifetime CPU. Per-batch scope CPU/lock receipts now distinguish idle presence from foreign activity; none was signalled. Initial inventory attached. Current-dev build still waits in the sole build-slot wrapper. Paired full 7,200-active-second/1,000-session comparison is prepared with seed270205, warm600, cadence/commands/thresholds unchanged, <=1740s holds and owner file. Baseline resource rows aggregate shims, exclude shells; its wakeup observer remains explicitly first-shim-only, so wakeup totals are not compared. No runtime fix, target change or D128 implementation claimed. [collector-check.tar.gz](https://git.kayg.org/attachments/207486c0-feae-4507-9042-a6cf494f5e63) [tail-report-gate.log](https://git.kayg.org/attachments/bd80f208-fb17-4edf-a0ae-8dc0d3dc46e2) [perf-inventory.txt](https://git.kayg.org/attachments/9d7ef718-4221-4f9d-9f7f-086a3b789f40)
kayg commented 2026-10-16 01:49:33 +00:00
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r8 finding, native d83529a76 diagnostic image, perf VM 4vCPU/Linux6.12.111, 180s/warm120/seed270205/1000sessions. 1800/1800 marker correlations; 1,182,247 numeric events; 10,695 kernel wait stacks; zero overruns. Six clean settled cohorts (600 probes) retained. Final cohort17 is EXCLUDED: additional SSH control scope session-c7426.scope appeared in its post-cohort audit. Its 22.219ms maximum is not clean attribution evidence.

Clean slowest session905/cohort11 RTT16.625869ms: ingress0.443153; input queue0.002646; PTY-write-to-read15.648521; VT0.003582; frame build0.000173; socket0.003230; reader lower0.516142ms. In the PTY interval: host runnable9.841ms, shell runnable12.345ms; these OVERLAP and cannot be added. Reader has no post-delivery futex wait; no diagnostic dump overlaps. Configured timer slack50,000ns for host/reader/counter/two sampled shells. Host/reader show no fault/direct-reclaim events in this probe; session905 fault events are UNOBSERVED, not zero. This is a scheduling contribution in a diagnostic sample, not complete admission-tail attribution or a passing fix.

Pushed steps since prior comment: 896204185 segment/exclusion report; 7850ec290 control documentation; 82a8ae15e/ccb0d7a99 relative futex receipt/intersection; a8f826a8a dump overlap/indexing; 8aafdadf5/6778c4e66 aged diagnostic bound/docs; 8fe3358fa unknown fault coverage and wake-to-run split; 160638975 applies the same contention exclusion to causal reports. Two coverage regressions and one contention regression fail before their corrections. Current benchmark suite84/84 passes. Native workload/threshold/runtime unchanged.

Current-dev minimal build completed, but it will NOT be the shipping control: the sole wrapper now builds default-feature dev492e1505a, then runs branch-head fast. Default-feature control is still compiling. Original PPU image/hash retained for canonical comparison. Paired7200-active-second comparison and aged900s/warm600 capture wait; no runtime change, target waiver or D128 work.

tail-a-clean-summary.txt
tail-a-raw.tar.gz
tail-coverage-red.log
tail-contention-green.log

r8 finding, native d83529a76 diagnostic image, perf VM 4vCPU/Linux6.12.111, 180s/warm120/seed270205/1000sessions. 1800/1800 marker correlations; 1,182,247 numeric events; 10,695 kernel wait stacks; zero overruns. Six clean settled cohorts (600 probes) retained. Final cohort17 is EXCLUDED: additional SSH control scope session-c7426.scope appeared in its post-cohort audit. Its 22.219ms maximum is not clean attribution evidence. Clean slowest session905/cohort11 RTT16.625869ms: ingress0.443153; input queue0.002646; PTY-write-to-read15.648521; VT0.003582; frame build0.000173; socket0.003230; reader lower0.516142ms. In the PTY interval: host runnable9.841ms, shell runnable12.345ms; these OVERLAP and cannot be added. Reader has no post-delivery futex wait; no diagnostic dump overlaps. Configured timer slack50,000ns for host/reader/counter/two sampled shells. Host/reader show no fault/direct-reclaim events in this probe; session905 fault events are UNOBSERVED, not zero. This is a scheduling contribution in a diagnostic sample, not complete admission-tail attribution or a passing fix. Pushed steps since prior comment: 896204185 segment/exclusion report; 7850ec290 control documentation; 82a8ae15e/ccb0d7a99 relative futex receipt/intersection; a8f826a8a dump overlap/indexing; 8aafdadf5/6778c4e66 aged diagnostic bound/docs; 8fe3358fa unknown fault coverage and wake-to-run split; 160638975 applies the same contention exclusion to causal reports. Two coverage regressions and one contention regression fail before their corrections. Current benchmark suite84/84 passes. Native workload/threshold/runtime unchanged. Current-dev minimal build completed, but it will NOT be the shipping control: the sole wrapper now builds default-feature dev492e1505a, then runs branch-head fast. Default-feature control is still compiling. Original PPU image/hash retained for canonical comparison. Paired7200-active-second comparison and aged900s/warm600 capture wait; no runtime change, target waiver or D128 work. [tail-a-clean-summary.txt](https://git.kayg.org/attachments/f7fc7136-4d05-4fbe-ae89-5486e4b57e65) [tail-a-raw.tar.gz](https://git.kayg.org/attachments/5b1fd717-e5e7-4a1a-bc8f-ae2f335716ab) [tail-coverage-red.log](https://git.kayg.org/attachments/2567b45a-06f4-4874-9bd3-c0a5a03aac6a) [tail-contention-green.log](https://git.kayg.org/attachments/51f47c37-edb7-45eb-bddc-aba3ab28b990)
kayg commented 2026-10-16 01:55:22 +00:00
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r8 live state, 03:54 Europe/Berlin. Pushed head160638975351bfa67272651c9e5509694927f973; only benchmark/research files changed in r8, no native runtime fix or default change. New benchmark suite84/84 passes. Tail-a clean result/exclusion and raw receipts attached in preceding finding.

Local root: $HOME/.cache/codex-scratch/process-per-user/r8. Sole build-slot wrapper PID344925 owns slot2 and runs build-baseline.sh. Minimal dev build completed; verify-head.sh is now building DEFAULT-FEATURE current dev492e1505a in detached r8/baseline (log evidence/build-shipping-baseline.log). After copying the full image it creates evidence/shipping-baseline.ready and runs branch-head scripts/verify fast plus independent TS if Rust stops early. Gate-head/status/transcripts are written under r8/evidence. One target only: process-per-user/target; TMPDIR physical short owned codex-scratch/p6 for gate sockets. No final fast result yet.

Local comparison controller PID473876, run-comparison.py, waits for shipping-baseline.ready. It stages to /root/infraternal-bench/p8, runs dev-soak then shared-soak for7200 active seconds each, seed270205/1000sessions/warm600/interval10, same original workload/thresholds. <=1740s holds via ppu_segment, owner file, retained frozen fixture. Native shared image is exact recorded7585/d835 artifact SHA d6bd211c5b449888903b3299e9304cef5c721aa7a828387e27f5bd2b4ca70515.

Aged diagnostic controller PID491721, run-aged.py, waits for first local dev.log sample before queueing ppu-soak-r8-tail-aged (remote tb,900s/warm600, source d835 diagnostic image) behind baseline first hold. Its reader streams numeric trace events; Native budgets are unchanged. No own VM fixture is currently active; ta/check/ic phases finished. Avoid new VM control queries during timed cohorts: one such new scope caused the conservative ta cohort17 exclusion. Read local streaming logs for status. Both controllers/sole wrapper remain alive; do not start another slot-wrapped build.

After results: fetch/retain raw files, run ppu_compare_report with explicit unit and ppu_tail_report --unit for exclusions, post every segment p50/p99/peak and counts. Attribute before runtime fixes; do not infer architecture-independent percentage by subtracting p99s. If dev misses5ms, propose measured target to orchestrator; never change D41. D128 not started. Final full-head fast, size delta, issue receipts and cleanup remain required. No merge/deploy.

r8 live state, 03:54 Europe/Berlin. Pushed head160638975351bfa67272651c9e5509694927f973; only benchmark/research files changed in r8, no native runtime fix or default change. New benchmark suite84/84 passes. Tail-a clean result/exclusion and raw receipts attached in preceding finding. Local root: $HOME/.cache/codex-scratch/process-per-user/r8. Sole build-slot wrapper PID344925 owns slot2 and runs build-baseline.sh. Minimal dev build completed; verify-head.sh is now building DEFAULT-FEATURE current dev492e1505a in detached r8/baseline (log evidence/build-shipping-baseline.log). After copying the full image it creates evidence/shipping-baseline.ready and runs branch-head scripts/verify fast plus independent TS if Rust stops early. Gate-head/status/transcripts are written under r8/evidence. One target only: process-per-user/target; TMPDIR physical short owned codex-scratch/p6 for gate sockets. No final fast result yet. Local comparison controller PID473876, run-comparison.py, waits for shipping-baseline.ready. It stages to /root/infraternal-bench/p8, runs dev-soak then shared-soak for7200 active seconds each, seed270205/1000sessions/warm600/interval10, same original workload/thresholds. <=1740s holds via ppu_segment, owner file, retained frozen fixture. Native shared image is exact recorded7585/d835 artifact SHA d6bd211c5b449888903b3299e9304cef5c721aa7a828387e27f5bd2b4ca70515. Aged diagnostic controller PID491721, run-aged.py, waits for first local dev.log sample before queueing ppu-soak-r8-tail-aged (remote tb,900s/warm600, source d835 diagnostic image) behind baseline first hold. Its reader streams numeric trace events; Native budgets are unchanged. No own VM fixture is currently active; ta/check/ic phases finished. Avoid new VM control queries during timed cohorts: one such new scope caused the conservative ta cohort17 exclusion. Read local streaming logs for status. Both controllers/sole wrapper remain alive; do not start another slot-wrapped build. After results: fetch/retain raw files, run ppu_compare_report with explicit unit and ppu_tail_report --unit for exclusions, post every segment p50/p99/peak and counts. Attribute before runtime fixes; do not infer architecture-independent percentage by subtracting p99s. If dev misses5ms, propose measured target to orchestrator; never change D41. D128 not started. Final full-head fast, size delta, issue receipts and cleanup remain required. No merge/deploy.
kayg commented 2026-10-16 02:27:25 +00:00
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r8 update, head a8c961ecdf pushed. Native Rust/build inputs unchanged from7585.90 benchmark checks pass; new cleanup PID-reuse and false-native-stage-header regressions have recorded red/green evidence. Commits485d31a09/a843d9143/4858779cb/3438c3194/effde209a/fbec1a336/84e79410f/a8c961ecd add pinned cleanup, shared marker/audit helpers, shipping-control scheduler capture/report and docs.

Default-feature dev492e1505a image SHAfc4c330b1c8ae8fe4a0c864e37d1c271ef3e70c16cb4ff86a3d3cd3087c99efb is now running original7200s/1000-session soak under first1740s hold; sampled threads1000/fds7000 stay flat. Warmup600s elapsed; no completed segment verdict yet. Hardware bootstrap:4vCPU/i9-9900K/Linux6.12.111, MemTotal8069112KiB, Swap0, page4096B; no machine resource change. Avoid fresh control SSH queries during settled probes.

Controllers under r8: run-comparison.py (dev then shared7200s each); run-aged.py (900/warm600 PPU trace queued behind first dev hold); run-checkpoint.py (copies first dev segment only after aged sample1, when baseline is frozen and aged is warming); run-baseline-profile.py (900/warm600 shipping trace queued only after dev full outcome); wait-final-gate.py (waits for original wrapper344925 before requesting final slot). Current local controller PIDs:
473876
491721
671204
679633
693281

Original fast is still active at160638975 and is now in static builds; its status/transcript are a milestone. A separate final gate is prepared for exact a8c961ecd, same target, through build-slot only after original wrapper exits. No two wrapped builds from this job. Final planned head in evidence/final-planned-head.txt; scripts verify-final.sh and wait-final-gate.py; outputs verify-fast-final.log/verify-final-status.txt/size-final.json.

Next: first-segment report around04:31+setup; aged diagnostic afterward; retain all raw/exclusion receipts. Full controls then shipping trace. Native target5ms unchanged, no native fix/D128/default change/deploy.

r8 update, head a8c961ecdffe1b9b96310082eac496ba6d033f41 pushed. Native Rust/build inputs unchanged from7585.90 benchmark checks pass; new cleanup PID-reuse and false-native-stage-header regressions have recorded red/green evidence. Commits485d31a09/a843d9143/4858779cb/3438c3194/effde209a/fbec1a336/84e79410f/a8c961ecd add pinned cleanup, shared marker/audit helpers, shipping-control scheduler capture/report and docs. Default-feature dev492e1505a image SHAfc4c330b1c8ae8fe4a0c864e37d1c271ef3e70c16cb4ff86a3d3cd3087c99efb is now running original7200s/1000-session soak under first1740s hold; sampled threads1000/fds7000 stay flat. Warmup600s elapsed; no completed segment verdict yet. Hardware bootstrap:4vCPU/i9-9900K/Linux6.12.111, MemTotal8069112KiB, Swap0, page4096B; no machine resource change. Avoid fresh control SSH queries during settled probes. Controllers under r8: run-comparison.py (dev then shared7200s each); run-aged.py (900/warm600 PPU trace queued behind first dev hold); run-checkpoint.py (copies first dev segment only after aged sample1, when baseline is frozen and aged is warming); run-baseline-profile.py (900/warm600 shipping trace queued only after dev full outcome); wait-final-gate.py (waits for original wrapper344925 before requesting final slot). Current local controller PIDs: 473876 491721 671204 679633 693281 Original fast is still active at160638975 and is now in static builds; its status/transcript are a milestone. A separate final gate is prepared for exact a8c961ecd, same target, through build-slot only after original wrapper exits. No two wrapped builds from this job. Final planned head in evidence/final-planned-head.txt; scripts verify-final.sh and wait-final-gate.py; outputs verify-fast-final.log/verify-final-status.txt/size-final.json. Next: first-segment report around04:31+setup; aged diagnostic afterward; retain all raw/exclusion receipts. Full controls then shipping trace. Native target5ms unchanged, no native fix/D128/default change/deploy.
kayg commented 2026-10-16 02:39:20 +00:00
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Current-dev control, first completed lock segment: DEFAULT-FEATURE492e1505a, image SHAfc4c330b1c8ae8fe4a0c864e37d1c271ef3e70c16cb4ff86a3d3cd3087c99efb, original1000-session/seed270205/7200-active-second workload, warm600/cadence/thresholds unchanged. Fixture remains frozen between holds; full run NOT complete.

Control segment Accepted cohorts/probes p50 pooled p99 peak batch p99 >5ms probes Gate
dev1 108 /10800 7.740119ms 15.440947ms 18.758717ms 9087 FAIL5ms

3/111 settled cohorts excluded: at790s unknown session-c7499.scope transition;1040s session-c7502.scope transition;1050s CPU activity in that scope. No attribution for those rows.

Audit correction: session-c7484.scope is this job's own queued aged coordinator, not another job. Verified live PID343922, saved birth21271876, private p8/ppu_segment.py script, unit ppu-soak-r8-tail-aged; total scope CPU2.664493s before freeze. Original baseline coordinator is PID334314 in session-c7480.scope. Proof attached. Explicit --observer-scope declaration keeps this own observer cost visible in reports/raw counters; it does not alter latency samples or unknown-scope exclusions. This restores108 usable cohorts; the original conservative audit and raw data remain preserved. Native threshold remains5ms.

Commits c6ab3dc56/4e99b0908/3425744a8 pushed: shared explicit observer declaration, causal-report forwarding and docs. The new test fails before the correction and all91 benchmark checks pass. No native runtime fix/default/target/resource change. This first dev result shows the existing architecture also misses5ms; it does not quantify an architecture-independent fraction by p99 subtraction or certify the whole2-hour run.

dev-first-segment-verified-observer.txt
dev-first-segment.tar.gz
own-observer-proofs.txt
observer-audit-green.log

Current-dev control, first completed lock segment: DEFAULT-FEATURE492e1505a, image SHAfc4c330b1c8ae8fe4a0c864e37d1c271ef3e70c16cb4ff86a3d3cd3087c99efb, original1000-session/seed270205/7200-active-second workload, warm600/cadence/thresholds unchanged. Fixture remains frozen between holds; full run NOT complete. | Control segment | Accepted cohorts/probes | p50 | pooled p99 | peak batch p99 | >5ms probes | Gate | |---|---:|---:|---:|---:|---:|---| | dev1 |108 /10800|7.740119ms|15.440947ms|18.758717ms|9087|FAIL5ms| 3/111 settled cohorts excluded: at790s unknown session-c7499.scope transition;1040s session-c7502.scope transition;1050s CPU activity in that scope. No attribution for those rows. Audit correction: session-c7484.scope is this job's own queued aged coordinator, not another job. Verified live PID343922, saved birth21271876, private p8/ppu_segment.py script, unit ppu-soak-r8-tail-aged; total scope CPU2.664493s before freeze. Original baseline coordinator is PID334314 in session-c7480.scope. Proof attached. Explicit --observer-scope declaration keeps this own observer cost visible in reports/raw counters; it does not alter latency samples or unknown-scope exclusions. This restores108 usable cohorts; the original conservative audit and raw data remain preserved. Native threshold remains5ms. Commits c6ab3dc56/4e99b0908/3425744a8 pushed: shared explicit observer declaration, causal-report forwarding and docs. The new test fails before the correction and all91 benchmark checks pass. No native runtime fix/default/target/resource change. This first dev result shows the existing architecture also misses5ms; it does not quantify an architecture-independent fraction by p99 subtraction or certify the whole2-hour run. [dev-first-segment-verified-observer.txt](https://git.kayg.org/attachments/62ad9391-f733-4da7-aa48-af00c640a887) [dev-first-segment.tar.gz](https://git.kayg.org/attachments/224ccd50-a5ff-41da-87ba-ce683428fd8e) [own-observer-proofs.txt](https://git.kayg.org/attachments/c7ce7806-9d85-4b7f-b1ba-b2966a402579) [observer-audit-green.log](https://git.kayg.org/attachments/1581842b-8c6e-4350-81bc-c7fd726e5f91)
kayg commented 2026-10-16 02:40:32 +00:00
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Milestone fast gate at160638975351bfa67272651c9e5509694927f973 through the sole build-slot wrapper; NOT final head3425744a8. Native Rust/build inputs unchanged. Verbatim summary:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

scripts/verify fast exit=1. Only static absolute caps fail: x8622277392/cap22204304 (+73088); ARM19705112/cap19638744 (+66368), identical to r7/native inputs. Independent ts_verify_fast exit=0. No cap changed or waived; r8 adds no native source growth.

Second verification started ata8c961ecd before the observed observer-scope audit correction; it remains a milestone. Final full-head verification remains required after report code settles. Native5ms acceptance remains open; dev first hold fails as recorded.

verify-fast.log
verify-ts.log
verify-status.txt

Milestone fast gate at160638975351bfa67272651c9e5509694927f973 through the sole build-slot wrapper; NOT final head3425744a8. Native Rust/build inputs unchanged. Verbatim summary: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` scripts/verify fast exit=1. Only static absolute caps fail: x8622277392/cap22204304 (+73088); ARM19705112/cap19638744 (+66368), identical to r7/native inputs. Independent ts_verify_fast exit=0. No cap changed or waived; r8 adds no native source growth. Second verification started ata8c961ecd before the observed observer-scope audit correction; it remains a milestone. Final full-head verification remains required after report code settles. Native5ms acceptance remains open; dev first hold fails as recorded. [verify-fast.log](https://git.kayg.org/attachments/d404dab7-2e64-4ab4-aed8-b3422c02a47e) [verify-ts.log](https://git.kayg.org/attachments/c452d03c-fea6-4f0d-80c9-707cceb8ea13) [verify-status.txt](https://git.kayg.org/attachments/aa5ddf4e-60ca-4885-b1a9-a1ce224d5efc)
kayg commented 2026-10-16 02:55:40 +00:00
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r8 finding: aged diagnostic matched 9000/9000 markers; no trace overruns; 3100 settled probes, zero exclusions after verified own observer declarations. Diagnostic p50/p99=13.887/27.563ms; peak batch p99=30.274ms. This is not admission evidence.

Slowest30.292ms: ingress3.437; input queue0.0026; PTY round trip22.189; VT0.0034; frame0.000066; socket syscall0.0044; socket-to-reader upper4.642ms. During PTY round trip host runnable19.224ms and shell runnable17.578ms overlap: do not add. A separate ingress stall sleeps3.165ms in n_tty_read -> __flush_work. Read call user_host.rs:701; stage immediately afterward identifies session901/fd1808/33bytes. Return values were discarded, so speculative retry remains a hypothesis. Adding numeric read fd/count/result to diagnose before any native fix. Zero diagnostic-dump overlap; no host/reader fault/reclaim event in this RTT; shell faults not observed. Full dev/control7200-second soaks still running; default unchanged; D128 deferred.

tail-aged-summary.txt
tty-stall-correlation.txt
tail-aged-raw.tar.gz

r8 finding: aged diagnostic matched 9000/9000 markers; no trace overruns; 3100 settled probes, zero exclusions after verified own observer declarations. Diagnostic p50/p99=13.887/27.563ms; peak batch p99=30.274ms. This is not admission evidence. Slowest30.292ms: ingress3.437; input queue0.0026; PTY round trip22.189; VT0.0034; frame0.000066; socket syscall0.0044; socket-to-reader upper4.642ms. During PTY round trip host runnable19.224ms and shell runnable17.578ms overlap: do not add. A separate ingress stall sleeps3.165ms in n_tty_read -> __flush_work. Read call user_host.rs:701; stage immediately afterward identifies session901/fd1808/33bytes. Return values were discarded, so speculative retry remains a hypothesis. Adding numeric read fd/count/result to diagnose before any native fix. Zero diagnostic-dump overlap; no host/reader fault/reclaim event in this RTT; shell faults not observed. Full dev/control7200-second soaks still running; default unchanged; D128 deferred. [tail-aged-summary.txt](https://git.kayg.org/attachments/dc73a3de-4df3-4095-acae-a7dd5442ebc3) [tty-stall-correlation.txt](https://git.kayg.org/attachments/05d3e2bf-96fe-4d4e-b6a7-5cf0720c19ce) [tail-aged-raw.tar.gz](https://git.kayg.org/attachments/954ba589-a525-4325-90d6-b9e4615af7ed)
kayg commented 2026-10-16 02:57:06 +00:00
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r8 step: pushed 980f8c313. Numeric read observer now retains fd/count/signed return, discarding pointers and content. New decoder test fails before implementation; 92 observer tests pass afterward; diff check passes. Native code/default/size unchanged. Same-seed 900s diagnostic queued as ppu-soak-r8-read (tr/tr-segments); verified coordinator PID390151 birth21596113, own observer session-c7541.scope. Admission continues unchanged.

read-fields-red.log
read-fields-green.log
own-read-observer-proof.txt

r8 step: pushed 980f8c313. Numeric read observer now retains fd/count/signed return, discarding pointers and content. New decoder test fails before implementation; 92 observer tests pass afterward; diff check passes. Native code/default/size unchanged. Same-seed 900s diagnostic queued as ppu-soak-r8-read (tr/tr-segments); verified coordinator PID390151 birth21596113, own observer session-c7541.scope. Admission continues unchanged. [read-fields-red.log](https://git.kayg.org/attachments/950166ed-98fb-474d-8890-0bf299f3eeea) [read-fields-green.log](https://git.kayg.org/attachments/9a7cc781-e4de-48d7-8bcb-bf73bd0a5347) [own-read-observer-proof.txt](https://git.kayg.org/attachments/493b656a-eb87-40c5-b4d4-64fb117fc1d5)
kayg commented 2026-10-16 03:03:53 +00:00
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r8 state: pushed392d60fbd documents syscall evidence and nonblocking TTY kernel-wait limitation. Native inputs still identical7585c2e9d; opt-in size2529216 B, delta+4384 B vs8cd43caff, within16384 B. Observer tests92 PASS. Latest build-slot gate: fmt/native fmt/compile-out/clippy/test/deny PASS; static-only FAIL known absolute caps x86+73088 B, ARM+66368 B; independent TypeScript0. This is a milestone (342 head at start,980 observer-only commit at end), not the final-head gate.

Controllers: run-comparison.py473876 dev full7200 active seconds now~2600, then identical shared7200; run-read-profile.py (private script under r8) queues tr/tr-segments900/600 same seed270205; run-baseline-profile.py waits dev completion then dt/dt-segments900/600. Native dev492e1505ab full default image fc4c330b...; shared7585 exact d6bd211c...; diagnosticd835 exactd2674a33... . VM fixture ownership/freeze/segments unchanged. Unknown scope activity remains excluded. No native performance fix adopted; D128 deferred.

r8 state: pushed392d60fbd documents syscall evidence and nonblocking TTY kernel-wait limitation. Native inputs still identical7585c2e9d; opt-in size2529216 B, delta+4384 B vs8cd43caff, within16384 B. Observer tests92 PASS. Latest build-slot gate: fmt/native fmt/compile-out/clippy/test/deny PASS; static-only FAIL known absolute caps x86+73088 B, ARM+66368 B; independent TypeScript0. This is a milestone (342 head at start,980 observer-only commit at end), not the final-head gate. Controllers: run-comparison.py473876 dev full7200 active seconds now~2600, then identical shared7200; run-read-profile.py (private script under r8) queues tr/tr-segments900/600 same seed270205; run-baseline-profile.py waits dev completion then dt/dt-segments900/600. Native dev492e1505ab full default image fc4c330b...; shared7585 exact d6bd211c...; diagnosticd835 exactd2674a33... . VM fixture ownership/freeze/segments unchanged. Unknown scope activity remains excluded. No native performance fix adopted; D128 deferred.
kayg commented 2026-10-16 03:07:05 +00:00
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r8 aged diagnostic detail (same complete capture, not admission): original fixture launches 100 timed echoes at ppu_soak.py:466; Peer.echo:223 uses send:174 and marker receive:183. Traced shell971 and993 each execute60 read +119 pselect6 +3 write calls for their60-byte probe, plus terminal/signal calls. Do not replace the shell command or workload to obtain a pass.

Cohort88/session971 RTT27.589ms: PTY round21.223ms, host runnable19.224, shell runnable11.159 (overlap); shell running-upper0.400ms. Session993 RTT25.614ms: ingress11.697ms includes host runnable9.816; PTY round1.244; post-socket12.645 includes reader runnable9.089 and running-upper3.556. Thus even one cohort contains different slow paths; no sole GIL/VT claim. Aggregate scheduler p99 host4.606ms/reader6.778ms/shell91215.900ms (diagnostic).

Across3100 settled probes, stage p99s: ingress10.100ms, input queue0.867, PTY round22.121, VT0.0206, frame0.000666, socket syscall0.0235, post-socket upper13.686. These percentiles are not additive. Full current-dev trace still pending the unchanged7200s control. No native fix adopted.

tail-aged-stage-percentiles.txt
tail-aged-shell-steps.txt

r8 aged diagnostic detail (same complete capture, not admission): original fixture launches 100 timed echoes at ppu_soak.py:466; Peer.echo:223 uses send:174 and marker receive:183. Traced shell971 and993 each execute60 read +119 pselect6 +3 write calls for their60-byte probe, plus terminal/signal calls. Do not replace the shell command or workload to obtain a pass. Cohort88/session971 RTT27.589ms: PTY round21.223ms, host runnable19.224, shell runnable11.159 (overlap); shell running-upper0.400ms. Session993 RTT25.614ms: ingress11.697ms includes host runnable9.816; PTY round1.244; post-socket12.645 includes reader runnable9.089 and running-upper3.556. Thus even one cohort contains different slow paths; no sole GIL/VT claim. Aggregate scheduler p99 host4.606ms/reader6.778ms/shell91215.900ms (diagnostic). Across3100 settled probes, stage p99s: ingress10.100ms, input queue0.867, PTY round22.121, VT0.0206, frame0.000666, socket syscall0.0235, post-socket upper13.686. These percentiles are not additive. Full current-dev trace still pending the unchanged7200s control. No native fix adopted. [tail-aged-stage-percentiles.txt](https://git.kayg.org/attachments/7385244b-c11f-4192-829e-1d6bee36b624) [tail-aged-shell-steps.txt](https://git.kayg.org/attachments/606c553b-a8f7-42e8-a9af-24445b767c8a)
kayg commented 2026-10-16 03:37:59 +00:00
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r8 observer steps pushed atomically: a88f478d1 adds main-reader accounted CPU endpoints inside native RTT; af6c7db4b validates paired/integer/nonnegative/ordered/within-RTT clocks;476c176a0 documents scope;30bdfffc5 samples once per matched marker rather than every bulk frame. Red-before-green endpoint/bounds/call-count tests;93 observer checks PASS. CPU includes diagnostic/other event-loop work, excludes counter-thread CPU and waits; overlapping probes are not additive and this is not a replacement admission metric. Legacy CPU absent stays unknown.

Atomic VM publication of final decoder/stage sources at monotonic218414565671722ns; receipt hashes attached. Confirm capture lock/start follows publication before claiming this observer revision. Native sources and original admission/segmentation unchanged. Baseline frozen3440/7200 active seconds awaiting perf lock; read trace also queued. Sole build-slot wrapper19161 is queued for exact current head30bdfffc5 (guard updated before entry). No native fix/target waiver/D128 claim.

reader-cpu-red.log
reader-cpu-green.log
reader-cpu-bounds-red.log
reader-cpu-bounds-green.log
reader-cpu-stage-receipt.txt

reader-cpu-cost-red.log
reader-cpu-cost-green.log
reader-cpu-final-stage-receipt.txt

r8 observer steps pushed atomically: a88f478d1 adds main-reader accounted CPU endpoints inside native RTT; af6c7db4b validates paired/integer/nonnegative/ordered/within-RTT clocks;476c176a0 documents scope;30bdfffc5 samples once per matched marker rather than every bulk frame. Red-before-green endpoint/bounds/call-count tests;93 observer checks PASS. CPU includes diagnostic/other event-loop work, excludes counter-thread CPU and waits; overlapping probes are not additive and this is not a replacement admission metric. Legacy CPU absent stays unknown. Atomic VM publication of final decoder/stage sources at monotonic218414565671722ns; receipt hashes attached. Confirm capture lock/start follows publication before claiming this observer revision. Native sources and original admission/segmentation unchanged. Baseline frozen3440/7200 active seconds awaiting perf lock; read trace also queued. Sole build-slot wrapper19161 is queued for exact current head30bdfffc5 (guard updated before entry). No native fix/target waiver/D128 claim. [reader-cpu-red.log](https://git.kayg.org/attachments/eec073b0-adae-4439-a084-78e12715a7c8) [reader-cpu-green.log](https://git.kayg.org/attachments/5cf91868-6626-4518-84b5-dbbde0598294) [reader-cpu-bounds-red.log](https://git.kayg.org/attachments/ca34f943-78b8-41a2-81d1-bd4516b4f014) [reader-cpu-bounds-green.log](https://git.kayg.org/attachments/7a941a1f-8bf6-4058-bf14-5ac24a58bf55) [reader-cpu-stage-receipt.txt](https://git.kayg.org/attachments/7b10eb88-5acc-4947-bc95-8178268f3a06) [reader-cpu-cost-red.log](https://git.kayg.org/attachments/0d390536-5f7c-47d5-8e10-ccb36ac16fe8) [reader-cpu-cost-green.log](https://git.kayg.org/attachments/f97f72f8-ef67-4130-8ee0-dcaff5e30d6b) [reader-cpu-final-stage-receipt.txt](https://git.kayg.org/attachments/5ca17e17-fdb4-4edf-8424-247560b2a557)
kayg commented 2026-10-16 03:56:34 +00:00
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r8 correction/finding: the initial control did NOT complete7200s. It retained3440s of timed samples in two full lock holds, then was globally OOM-killed while frozen. Kernel: CONSTRAINT_NONE/global_oom; allocating cpuset=ppu-soak-r8-read.scope; victim task_memcg=ppu-soak-r8-dev.scope. Baseline MemoryPeak5307076608B. Our paused baseline and new diagnostic co-resided; this result cannot establish the baseline's isolated capacity. Old SSH streams ended with misleading exit0; read diagnostic actual coordinator exit120/49.412s and BrokenPipeError, zero settled cohorts. No admission pass or continued queue is claimed.

Valid pre-interruption control windows (1000 sessions;270205;600s warmup; original commands):
|segment|accepted/excluded cohorts|p50 ms|pooled p99 ms|peak batch p99 ms|
|1|108/3|7.740119|15.440947|18.758717|
|2|170/4|8.352146|25.743720|111.751928|
|3|0/0|none|none|none|
27800 accepted probes,23961>5ms. Third window contains only a failed thaw after OOM. Scope audit declares only proven own observers c7484/c7541; seven unverified activity cohorts stay excluded. Worst accepted control batch elapsed3420.123s, load0.07/0.13/0.55; PSS2526230KiB. Percentiles are not subtracted from PPU or converted into a causal population fraction.

Recovery: root transient controllers use file-backed fixture logs/status, independent of SSH streams. Only ONE fixture from this job is resident. p8b controller ppu-r8b-control-665e927a/PID411352 now runs shipping and shared900s diagnostic captures serially. Its admission phases failed before launch due a binary/evidence filename collision (zero samples), not runtime behavior. Corrected p8c controller ppu-r8c-control-02033867/PID420444 waits for p8b cleanup, then retries dev and shared7200s serially with distinct *-run evidence directories. Same counts/seed/commands/thresholds/5GiB cap/short owner-file lock segments. No memory/resource increase. Read-only observer PID419735 birth21937490, script p8b/ppu_r8_watch.py, scope session-c7588.scope is positively identified. Never infer measurement success from SSH exit code: require complete raw outcome, duration and survivor receipts. Local tool session19161 (not a PID) completed exact-head30bdfffc5 gate.

interruption-state.txt
interrupted-raw.tar.gz
dev-two-segments-report.txt
serial-launch.txt
admission-serial-launch.txt

r8 correction/finding: the initial control did NOT complete7200s. It retained3440s of timed samples in two full lock holds, then was globally OOM-killed while frozen. Kernel: CONSTRAINT_NONE/global_oom; allocating cpuset=ppu-soak-r8-read.scope; victim task_memcg=ppu-soak-r8-dev.scope. Baseline MemoryPeak5307076608B. Our paused baseline and new diagnostic co-resided; this result cannot establish the baseline's isolated capacity. Old SSH streams ended with misleading exit0; read diagnostic actual coordinator exit120/49.412s and BrokenPipeError, zero settled cohorts. No admission pass or continued queue is claimed. Valid pre-interruption control windows (1000 sessions;270205;600s warmup; original commands): |segment|accepted/excluded cohorts|p50 ms|pooled p99 ms|peak batch p99 ms| |1|108/3|7.740119|15.440947|18.758717| |2|170/4|8.352146|25.743720|111.751928| |3|0/0|none|none|none| 27800 accepted probes,23961>5ms. Third window contains only a failed thaw after OOM. Scope audit declares only proven own observers c7484/c7541; seven unverified activity cohorts stay excluded. Worst accepted control batch elapsed3420.123s, load0.07/0.13/0.55; PSS2526230KiB. Percentiles are not subtracted from PPU or converted into a causal population fraction. Recovery: root transient controllers use file-backed fixture logs/status, independent of SSH streams. Only ONE fixture from this job is resident. p8b controller ppu-r8b-control-665e927a/PID411352 now runs shipping and shared900s diagnostic captures serially. Its admission phases failed before launch due a binary/evidence filename collision (zero samples), not runtime behavior. Corrected p8c controller ppu-r8c-control-02033867/PID420444 waits for p8b cleanup, then retries dev and shared7200s serially with distinct *-run evidence directories. Same counts/seed/commands/thresholds/5GiB cap/short owner-file lock segments. No memory/resource increase. Read-only observer PID419735 birth21937490, script p8b/ppu_r8_watch.py, scope session-c7588.scope is positively identified. Never infer measurement success from SSH exit code: require complete raw outcome, duration and survivor receipts. Local tool session19161 (not a PID) completed exact-head30bdfffc5 gate. [interruption-state.txt](https://git.kayg.org/attachments/39d9e0ed-4363-4d04-af35-43da34f9a64a) [interrupted-raw.tar.gz](https://git.kayg.org/attachments/4b33440d-39e8-4200-b474-7276c5be6935) [dev-two-segments-report.txt](https://git.kayg.org/attachments/b20fd9c4-3efc-456f-b795-efd4feb6e3c1) [serial-launch.txt](https://git.kayg.org/attachments/fca784ca-def9-44f1-b5ae-2c33aa34b3d1) [admission-serial-launch.txt](https://git.kayg.org/attachments/d5170797-732a-49c3-835e-8ff28c51514b)
kayg commented 2026-10-16 03:57:59 +00:00
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r8 exact-head gate completed through build-slot: 30bdfffc59; start/end SHA match. Measurement work is still running, so this is not a done/adoption claim. scripts/verify fast exit1; independent ts_verify_fast exit0. Verbatim final gate output:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

Only known absolute static caps are red: x86 size22277392/cap22204304 (+73088B); ARM19705112/cap19638744 (+66368B). Opt-in native image unchanged since7585:2529216B vs2524832B at8cd43caff, delta+4384B <=16384B; r8 native-input diff empty.93 observer tests PASS. No native runtime/default/dependency/wire change in r8.

Durable active state is on the VM: p8b/serial-state.json and per-phase controller files; p8c/serial-state.json waits until p8b finishes cleanup before starting its dev/shared7200s retry. Current b shipping-profile fixture started after final observer publication, no second fixture from this job co-resides. Public invocation IDs/PIDs and exact temporary controller source are attached for resumption; controller completion alone never means admission passed. No merge/deploy.

verify-fast-final.log
verify-ts-final.log
size-final.json
ppu_r8_serial.py.txt
ppu_r8_admission_serial.py.txt
ppu_r8_watch.py.txt

r8 exact-head gate completed through build-slot: 30bdfffc59bf5304be584a3af3a65d0b8d556fa1; start/end SHA match. Measurement work is still running, so this is not a done/adoption claim. `scripts/verify fast` exit1; independent `ts_verify_fast` exit0. Verbatim final gate output: ```text +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` Only known absolute static caps are red: x86 size22277392/cap22204304 (+73088B); ARM19705112/cap19638744 (+66368B). Opt-in native image unchanged since7585:2529216B vs2524832B at8cd43caff, delta+4384B <=16384B; r8 native-input diff empty.93 observer tests PASS. No native runtime/default/dependency/wire change in r8. Durable active state is on the VM: p8b/serial-state.json and per-phase controller files; p8c/serial-state.json waits until p8b finishes cleanup before starting its dev/shared7200s retry. Current b shipping-profile fixture started after final observer publication, no second fixture from this job co-resides. Public invocation IDs/PIDs and exact temporary controller source are attached for resumption; controller completion alone never means admission passed. No merge/deploy. [verify-fast-final.log](https://git.kayg.org/attachments/3d944dd4-0c4e-4b7f-a2da-4b966291413b) [verify-ts-final.log](https://git.kayg.org/attachments/b90b8510-3800-4308-a35e-9c578c146f1c) [size-final.json](https://git.kayg.org/attachments/59cece0f-fb44-4ee1-992e-fac492594a09) [ppu_r8_serial.py.txt](https://git.kayg.org/attachments/6463d89b-4eff-4bd3-aff8-874a28415d31) [ppu_r8_admission_serial.py.txt](https://git.kayg.org/attachments/b52eb001-8f83-4ae9-b1c1-e22ead946273) [ppu_r8_watch.py.txt](https://git.kayg.org/attachments/902c9ecd-1f45-4e97-a37a-69fec5075f8c)
kayg commented 2026-10-16 04:21:19 +00:00
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r8 shipping-control attribution (900s diagnostic, not admission):9000/9000 native markers;zero overruns;3100 settled probes;zero audit exclusions with positively verified observer session-c7588.scope.1000/1000 responsive final census,fd/thread growth0. Original5ms budget FAIL. p50=14.149608ms,pooled p99=35.855975ms,peak batch p99=42.472613ms.

Main-reader accounted CPU within each native RTT: p50=6.554726ms,p99=11.040850ms,max=12.836862ms;2936/3100 intervals>5ms. This includes diagnostic matching and other event-loop work, excludes counter-thread CPU/waits, and is NOT a production lower bound or a replacement metric.

Concrete bad batch85/session900: native RTT43.338277ms; reader runnable31.712ms (73.17% of this RTT), accounted reader CPU11.147466ms (25.72%); reader sleeping0/unknown0. Shim scheduled-running upper0.884ms/runnable0.022; shell upper0.310/runnable0.009. Source locations: ppu_soak.py:466 schedules100 echo coroutines; send:174/receive:183/echo:223 implement the common reader path. No unobserved native VT/frame timestamps are invented. This identifies common reader CPU plus guest run-queue delay in a slow control probe; it does not assign the same percentages to the PPU population or prove a specific interpreter function/GIL cause.

No reader fault/reclaim event in that RTT; shim/shell900 fault coverage is absent and stays unknown. Cohort load1.04/1.00/0.81; timer slack50000ns throughout settled samples. Global memory PSI totals rise206921us(some)/144979us(full) across the broader300s settled interval, so no blanket zero-pressure claim. Default uninstrumented7200s retry remains separate and pending. No native fix/threshold waiver adopted.

baseline-profile-b-summary.txt
baseline-profile-b-causal-summary.txt
baseline-profile-b-causal-report.txt
baseline-profile-b-raw.tar.gz

r8 shipping-control attribution (900s diagnostic, not admission):9000/9000 native markers;zero overruns;3100 settled probes;zero audit exclusions with positively verified observer session-c7588.scope.1000/1000 responsive final census,fd/thread growth0. Original5ms budget FAIL. p50=14.149608ms,pooled p99=35.855975ms,peak batch p99=42.472613ms. Main-reader accounted CPU within each native RTT: p50=6.554726ms,p99=11.040850ms,max=12.836862ms;2936/3100 intervals>5ms. This includes diagnostic matching and other event-loop work, excludes counter-thread CPU/waits, and is NOT a production lower bound or a replacement metric. Concrete bad batch85/session900: native RTT43.338277ms; reader runnable31.712ms (73.17% of this RTT), accounted reader CPU11.147466ms (25.72%); reader sleeping0/unknown0. Shim scheduled-running upper0.884ms/runnable0.022; shell upper0.310/runnable0.009. Source locations: ppu_soak.py:466 schedules100 echo coroutines; send:174/receive:183/echo:223 implement the common reader path. No unobserved native VT/frame timestamps are invented. This identifies common reader CPU plus guest run-queue delay in a slow control probe; it does not assign the same percentages to the PPU population or prove a specific interpreter function/GIL cause. No reader fault/reclaim event in that RTT; shim/shell900 fault coverage is absent and stays unknown. Cohort load1.04/1.00/0.81; timer slack50000ns throughout settled samples. Global memory PSI totals rise206921us(some)/144979us(full) across the broader300s settled interval, so no blanket zero-pressure claim. Default uninstrumented7200s retry remains separate and pending. No native fix/threshold waiver adopted. [baseline-profile-b-summary.txt](https://git.kayg.org/attachments/bccd4853-5a26-4e78-b155-d12bcdf8af7b) [baseline-profile-b-causal-summary.txt](https://git.kayg.org/attachments/2e3e7f95-2202-4f46-8e7f-cc072274f793) [baseline-profile-b-causal-report.txt](https://git.kayg.org/attachments/18c5bbe4-24b0-40a5-855f-ea68e54ed6c4) [baseline-profile-b-raw.tar.gz](https://git.kayg.org/attachments/67e8e037-db84-439a-aaeb-4e12dce09986)
kayg commented 2026-10-16 05:35:26 +00:00
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r8 shared-host attribution: fresh900s capture matched9000/9000 markers,zero overruns,1000/1000 responsive survivors,fd/thread growth0,PSS growth8KiB.3000 settled probes accepted;cohort61 at620s excluded for unverified session-c7618.scope transition. Positively verified own observerc7588 declared. p50=15.411930ms,pooled p99=39.043625ms,peak batch p99=50.691732ms;original5ms gate FAIL.

Concrete cohort81/session932 RTT50.696023ms: ingress1.606334,input queue0.003935,PTY write→read6.272636,VT0.004611,frame0.000064,socket syscall0.002978ms. Full Unix-stream frame write completed42.788993ms before marker receipt:84.40% of this RTT is after host delivery. During that post-socket stage reader scheduled-running upper22.376797,runnable20.281174,sleeping0.134,unknown0ms. Main-reader accounted CPU within whole RTT24.894548ms (includes observer/other event-loop work). No dump overlap. Host fault/reclaim events0;reader one page_fault_user (major/minor not identified by event);shell932 untraced/unknown. Brief counter-linked futex waits exist, not a demonstrated dominant GIL cause. Main-reader CPU p50/p99 across accepted probes6.680695/18.722235ms.

TTY-read hypothesis tested with numeric fd/count/results:4237 settled calls with n_tty_read wait stacks;3889 return useful bytes,348 EAGAIN. Largest call overlapping accepted probes: session992 reads11 bytes,then22 bytes in9.803ms;the latter is running-upper0.017/runnable9.573/sleeping0.213ms. Another first read returns33bytes in6.627ms (runnable6.528/sleeping0.082). Largest overlapping EAGAIN1.546ms (runnable1.454/sleeping0.052). All-settled maxima include non-probe windows: productive24.600/EAGAIN29.738ms. Do not label syscall duration all kernel sleeping. Largest observed probe stalls are productive reads, so simply removing empty retries does not explain them. Native read source user_host.rs:701;common reader dispatch/receive ppu_soak.py:466/:183. No native change or target waiver adopted from these observations.

Forgejo attachment/comment outage recovered. Complete raw and derived receipts are attached below. Fresh uninstrumented7200s control retry remains active in p8c/dev-run, with shared-run7200 following cleanup; its first two closed segments miss5ms. Only one fixture from this job is resident. No native fix/threshold waiver/default change.

shared-profile-b-summary.txt
shared-profile-b-causal-summary.txt
shared-profile-b-causal-report.txt
shared-profile-b-tty-waits.txt
shared-profile-b-raw.tar.gz
old-counter-cleanup.txt

r8 shared-host attribution: fresh900s capture matched9000/9000 markers,zero overruns,1000/1000 responsive survivors,fd/thread growth0,PSS growth8KiB.3000 settled probes accepted;cohort61 at620s excluded for unverified session-c7618.scope transition. Positively verified own observerc7588 declared. p50=15.411930ms,pooled p99=39.043625ms,peak batch p99=50.691732ms;original5ms gate FAIL. Concrete cohort81/session932 RTT50.696023ms: ingress1.606334,input queue0.003935,PTY write→read6.272636,VT0.004611,frame0.000064,socket syscall0.002978ms. Full Unix-stream frame write completed42.788993ms before marker receipt:84.40% of this RTT is after host delivery. During that post-socket stage reader scheduled-running upper22.376797,runnable20.281174,sleeping0.134,unknown0ms. Main-reader accounted CPU within whole RTT24.894548ms (includes observer/other event-loop work). No dump overlap. Host fault/reclaim events0;reader one page_fault_user (major/minor not identified by event);shell932 untraced/unknown. Brief counter-linked futex waits exist, not a demonstrated dominant GIL cause. Main-reader CPU p50/p99 across accepted probes6.680695/18.722235ms. TTY-read hypothesis tested with numeric fd/count/results:4237 settled calls with n_tty_read wait stacks;3889 return useful bytes,348 EAGAIN. Largest call overlapping accepted probes: session992 reads11 bytes,then22 bytes in9.803ms;the latter is running-upper0.017/runnable9.573/sleeping0.213ms. Another first read returns33bytes in6.627ms (runnable6.528/sleeping0.082). Largest overlapping EAGAIN1.546ms (runnable1.454/sleeping0.052). All-settled maxima include non-probe windows: productive24.600/EAGAIN29.738ms. Do not label syscall duration all kernel sleeping. Largest observed probe stalls are productive reads, so simply removing empty retries does not explain them. Native read source user_host.rs:701;common reader dispatch/receive ppu_soak.py:466/:183. No native change or target waiver adopted from these observations. Forgejo attachment/comment outage recovered. Complete raw and derived receipts are attached below. Fresh uninstrumented7200s control retry remains active in p8c/dev-run, with shared-run7200 following cleanup; its first two closed segments miss5ms. Only one fixture from this job is resident. No native fix/threshold waiver/default change. [shared-profile-b-summary.txt](https://git.kayg.org/attachments/ff1f8613-6965-4eb0-b3f8-2d166d44b189) [shared-profile-b-causal-summary.txt](https://git.kayg.org/attachments/7190baf2-d0a9-40cf-8d6a-cfe30e1e99c4) [shared-profile-b-causal-report.txt](https://git.kayg.org/attachments/33aa958a-48d4-49e3-8532-c88ee40f879c) [shared-profile-b-tty-waits.txt](https://git.kayg.org/attachments/c8bc527f-0d15-46d3-84b8-4728831b7505) [shared-profile-b-raw.tar.gz](https://git.kayg.org/attachments/bab25309-e6a3-489a-a6c1-e63304029f90) [old-counter-cleanup.txt](https://git.kayg.org/attachments/f9ddc665-e5df-4f1a-9b47-232aadebe171)
kayg commented 2026-10-16 05:35:34 +00:00
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r8 fresh uninstrumented control, completed lock windows only; full7200s still active. Shipping default492e1505ab;image fc4c330b1c8ae8fe4a0c864e37d1c271ef3e70c16cb4ff86a3d3cd3087c99efb;1000sessions,seed270205,warmup600,interval10,original commands/thresholds/5GiB cap.

segment accepted/excluded cohorts p50 ms pooled p99 ms peak batch p99 ms
1 107/4 9.674826 31.986927 41.520153
2 170/4 8.648694 27.592736 34.517981
Both strict5ms gates FAIL; source/counts unchanged.27700 accepted probes,24726>5ms. Eight unverified scope-activity cohorts stay excluded; only positively verified own observerc7629 is declared. Raw checkpoints include the live prefix; derived views keep unchanged original lines through completed windows and omit the later open window. No completed7200s result or final census is claimed yet. Current control>4200active seconds,threads1000/fds7000 flat; shared7200s follows cleanup. Root service420444/ppu-r8c-control-02033867;coordinator446923;observer455075/birth22121273/private p8c/ppu_r8_watch.py/c7629. Native source/head30bdfffc5/gate/size unchanged.

c-first-closed-report.txt
c-two-closed-report.txt
c-control-checkpoint1.tar.gz
c-control-checkpoint2.tar.gz

r8 fresh uninstrumented control, completed lock windows only; full7200s still active. Shipping default492e1505ab;image fc4c330b1c8ae8fe4a0c864e37d1c271ef3e70c16cb4ff86a3d3cd3087c99efb;1000sessions,seed270205,warmup600,interval10,original commands/thresholds/5GiB cap. |segment|accepted/excluded cohorts|p50 ms|pooled p99 ms|peak batch p99 ms| |---|---:|---:|---:|---:| |1|107/4|9.674826|31.986927|41.520153| |2|170/4|8.648694|27.592736|34.517981| Both strict5ms gates FAIL; source/counts unchanged.27700 accepted probes,24726>5ms. Eight unverified scope-activity cohorts stay excluded; only positively verified own observerc7629 is declared. Raw checkpoints include the live prefix; derived views keep unchanged original lines through completed windows and omit the later open window. No completed7200s result or final census is claimed yet. Current control>4200active seconds,threads1000/fds7000 flat; shared7200s follows cleanup. Root service420444/ppu-r8c-control-02033867;coordinator446923;observer455075/birth22121273/private p8c/ppu_r8_watch.py/c7629. Native source/head30bdfffc5/gate/size unchanged. [c-first-closed-report.txt](https://git.kayg.org/attachments/14f2d493-0fa8-408c-9f4c-2556ecf3982a) [c-two-closed-report.txt](https://git.kayg.org/attachments/fed57ff5-389d-4646-a967-7a3e4a5fed30) [c-control-checkpoint1.tar.gz](https://git.kayg.org/attachments/edf5b815-1208-46c3-9de5-5ee73a618651) [c-control-checkpoint2.tar.gz](https://git.kayg.org/attachments/a556670b-bf82-4a0f-bb86-2c1c7336f3e7)
kayg commented 2026-10-16 06:02:48 +00:00
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r8 control checkpoint, head30bdfffc5: third closed shipping-dev lock window has 167 retained cohorts/16,700 probes; p50 7.408 ms, pooled p99 19.895 ms, peak batch p99 27.593 ms (5 ms FAIL). Seven observed foreign-activity cohorts excluded in this window; 15 excluded across all three. The original JSONL lines through closed windows are retained unchanged; fourth open window is omitted explicitly. Full7200s control is still active; no full-run success claimed. Shared run follows serially with the identical session count/seed/commands/thresholds.

Raw checkpoint, three closed-window report, counts and exclusions.

r8 control checkpoint, head30bdfffc5: third closed shipping-dev lock window has 167 retained cohorts/16,700 probes; p50 7.408 ms, pooled p99 19.895 ms, peak batch p99 27.593 ms (5 ms FAIL). Seven observed foreign-activity cohorts excluded in this window; 15 excluded across all three. The original JSONL lines through closed windows are retained unchanged; fourth open window is omitted explicitly. Full7200s control is still active; no full-run success claimed. Shared run follows serially with the identical session count/seed/commands/thresholds. [Raw checkpoint](https://git.kayg.org/attachments/9dea5130-4103-47b8-bdc5-d50cd6ce61f7), [three closed-window report, counts and exclusions](https://git.kayg.org/attachments/9b3a068b-5d11-4f2e-968c-0bf2424d3da0).
kayg commented 2026-10-16 06:28:57 +00:00
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r8 full shipping-dev control complete: 720 samples through7200.041 active seconds,1000/1000 responsive,flat7000fds/1000threads; default492e1505ab/imagefc4c330b. Same1000sessions/seed270205/warmup600/10s interval/commands/5GiB cap; five short lock holds, each <=1740s, no co-resident fixture from this job. Native outcome exit1: echo gate FAIL and aggregate shim PSS growth426,980KiB (recorded, not hidden). No OOM in this isolated retry.

segment accepted/excluded cohorts p50 ms pooled p99 ms peak batch p99 ms
1 107/4 9.674826 31.986927 41.520153
2 170/4 8.648694 27.592736 34.517981
3 167/7 7.408188 19.895097 27.592632
4 166/8 7.778586 17.521621 23.315687
5 24/4 9.556674 32.772988 35.776108

All five strict5ms gates FAIL.63,400 retained settled probes,pooledp50 8.237526/p99 24.529014ms;54,617>5ms.27 cohorts excluded for observed unverified scope activity; only positively verified own observerc7629 declared. Each batch retains /proc/loadavg, owner file and actual flock identity. Retained load-average ranges(1/5/15min)0–10.03/.02–2.49/.19–1.35: averages retain earlier activity, and scope snapshots are not continuous certification of arbitrary system services. No causal percentage inferred by subtracting p99s.

Serial controller has cleaned the dev fixture and started shared-run7200 with unchanged thresholds. Target remains5ms FAIL; calibrated-target proposal follows the complete pair.

Full original receipt, all segments and exact exclusions, pooled summary and loads.

r8 full shipping-dev control complete: 720 samples through7200.041 active seconds,1000/1000 responsive,flat7000fds/1000threads; default492e1505ab/imagefc4c330b. Same1000sessions/seed270205/warmup600/10s interval/commands/5GiB cap; five short lock holds, each <=1740s, no co-resident fixture from this job. Native outcome exit1: echo gate FAIL and aggregate shim PSS growth426,980KiB (recorded, not hidden). No OOM in this isolated retry. |segment|accepted/excluded cohorts|p50 ms|pooled p99 ms|peak batch p99 ms| |---|---:|---:|---:|---:| |1|107/4|9.674826|31.986927|41.520153| |2|170/4|8.648694|27.592736|34.517981| |3|167/7|7.408188|19.895097|27.592632| |4|166/8|7.778586|17.521621|23.315687| |5|24/4|9.556674|32.772988|35.776108| All five strict5ms gates FAIL.63,400 retained settled probes,pooledp50 8.237526/p99 24.529014ms;54,617>5ms.27 cohorts excluded for observed unverified scope activity; only positively verified own observerc7629 declared. Each batch retains /proc/loadavg, owner file and actual flock identity. Retained load-average ranges(1/5/15min)0–10.03/.02–2.49/.19–1.35: averages retain earlier activity, and scope snapshots are not continuous certification of arbitrary system services. No causal percentage inferred by subtracting p99s. Serial controller has cleaned the dev fixture and started shared-run7200 with unchanged thresholds. Target remains5ms FAIL; calibrated-target proposal follows the complete pair. [Full original receipt](https://git.kayg.org/attachments/f66ced5f-3688-4497-bda2-088fd6f390f2), [all segments and exact exclusions](https://git.kayg.org/attachments/1eec27b6-0f86-422a-8d74-ce5b9305aded), [pooled summary and loads](https://git.kayg.org/attachments/238870b4-1299-4176-9060-b9c4e1c9bfef).
kayg commented 2026-10-16 07:23:56 +00:00
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r8 shared admission, first closed lock window:109 retained/4 excluded settled cohorts,10,900 probes; p50 8.317731ms, pooledp99 22.289053ms, peakbatchp99 32.312862ms;9670probes>5ms. Strict5ms gate FAIL, unchanged workload/seed/thresholds. Shipping control first-windowp99 31.986927ms/peak41.520153ms; these serial observations are not a causal percentage. Remaining shared active duration continues; no completed7200s claim. Files3005/hostthreads1 flat. Captured scope description0fe82d81ecb04f03abb2bec6afd8b9de, coordinator553388; same proven observerc7629 only. Initial lock wait~26minutes was outside active time.

Raw checkpoint, closed-window report and exact exclusions.

r8 shared admission, first closed lock window:109 retained/4 excluded settled cohorts,10,900 probes; p50 8.317731ms, pooledp99 22.289053ms, peakbatchp99 32.312862ms;9670probes>5ms. Strict5ms gate FAIL, unchanged workload/seed/thresholds. Shipping control first-windowp99 31.986927ms/peak41.520153ms; these serial observations are not a causal percentage. Remaining shared active duration continues; no completed7200s claim. Files3005/hostthreads1 flat. Captured scope description0fe82d81ecb04f03abb2bec6afd8b9de, coordinator553388; same proven observerc7629 only. Initial lock wait~26minutes was outside active time. [Raw checkpoint](https://git.kayg.org/attachments/8a3a69ab-2885-4b9c-95f0-5d92dccced37), [closed-window report and exact exclusions](https://git.kayg.org/attachments/32a9f761-819c-41ca-a57c-3150c0cfdc7a).
kayg commented 2026-10-16 08:07:14 +00:00
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r8 shared admission second closed lock window:168 retained/6 excluded settled cohorts,16,800 probes; p50 8.918165ms,pooledp99 29.376252ms,peakbatchp99 59.876948ms;15,389probes>5ms. Strict5ms gate FAIL. First windowp99 22.289053/peak32.312862; cumulative10 cohorts excluded. Shipping control second-windowp99 27.592736/peak34.517981: shared does not improve every window and the peak batch is worse. This uninstrumented batch has no per-stage trace, so do not assign its59.877ms to the50.696ms diagnostic probe or subtract percentiles to claim a causal share. No native fix or target waiver. Third window active, resources flat3005fds/one hostthread.

Raw checkpoint, both closed windows and exact exclusions.

r8 shared admission second closed lock window:168 retained/6 excluded settled cohorts,16,800 probes; p50 8.918165ms,pooledp99 29.376252ms,peakbatchp99 59.876948ms;15,389probes>5ms. Strict5ms gate FAIL. First windowp99 22.289053/peak32.312862; cumulative10 cohorts excluded. Shipping control second-windowp99 27.592736/peak34.517981: shared does not improve every window and the peak batch is worse. This uninstrumented batch has no per-stage trace, so do not assign its59.877ms to the50.696ms diagnostic probe or subtract percentiles to claim a causal share. No native fix or target waiver. Third window active, resources flat3005fds/one hostthread. [Raw checkpoint](https://git.kayg.org/attachments/aff619f4-c50e-425c-8098-e1cab34ab145), [both closed windows and exact exclusions](https://git.kayg.org/attachments/ec83613d-711a-48af-bca6-ca4a29844beb).
kayg commented 2026-10-16 08:37:13 +00:00
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r8 shared third closed lock window:166 retained/8 excluded settled cohorts,16,600 probes; p50 9.835281ms,pooledp99 29.094703ms,peakbatchp99 58.143946ms;15,433probes>5ms. Strict5ms gate FAIL. All three shared windows fail;18 cohorts excluded so far. Shipping control thirdp99 19.895097/peak27.592632ms: shared is worse in this serial window. The separate early900s diagnostic cannot attribute every later uninstrumented batch; no claim that all excess tail is architecture-independent. Fourth window/remaining~2000active seconds continue; final census still pending. Original input/output workload, threshold and image unchanged.

Raw checkpoint, three closed windows and exact exclusions.

r8 shared third closed lock window:166 retained/8 excluded settled cohorts,16,600 probes; p50 9.835281ms,pooledp99 29.094703ms,peakbatchp99 58.143946ms;15,433probes>5ms. Strict5ms gate FAIL. All three shared windows fail;18 cohorts excluded so far. Shipping control thirdp99 19.895097/peak27.592632ms: shared is worse in this serial window. The separate early900s diagnostic cannot attribute every later uninstrumented batch; no claim that all excess tail is architecture-independent. Fourth window/remaining~2000active seconds continue; final census still pending. Original input/output workload, threshold and image unchanged. [Raw checkpoint](https://git.kayg.org/attachments/f2508c64-9d55-4f1c-b424-8a76fc819a43), [three closed windows and exact exclusions](https://git.kayg.org/attachments/f09ca37d-8cb9-406f-b409-ef9496f2ca42).
kayg commented 2026-10-16 09:54:52 +00:00
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r8 complete uninstrumented matched admission pair, head30bdfffc5. Both7200active seconds/720samples,1000/1000 final sessions responsive,flatfds/threads; sequential fixtures,5GiB cap,1000sessions/seed270205/warmup600/interval10 and original commands/thresholds. All five segments of BOTH architectures fail5ms.27 observed foreign-activity cohorts excluded per architecture;63,400 retained probes each. Native driver exits1 in both; controller exits0 means cleanup completed, not admission passed. Both fixture scopes and controller are inactive/empty after cleanup.

segment dev p50/p99 ms shared p50/p99 ms dev/shared peak batch p99 ms dev/shared accepted(excluded) cohorts
1 9.674826/31.986927 8.317731/22.289053 41.520153/32.312862 107(4)/109(4)
2 8.648694/27.592736 8.918165/29.376252 34.517981/59.876948 170(4)/168(6)
3 7.408188/19.895097 9.835281/29.094703 27.592632/58.143946 167(7)/166(8)
4 7.778586/17.521621 9.016171/51.550411 23.315687/117.556291 166(8)/169(5)
5 9.556674/32.772988 7.123930/13.676745 35.776108/14.338801 24(4)/22(4)

Retained pooledp50/p99 dev8.237526/24.529014ms,shared8.935071/31.133070ms. Aggregate shim/host PSS growth426,980/184KiB respectively; control fd/thread7000/1000,shared3005/1 flat. Per-cohort loads/owner/actualflock remain in raw receipts; retained1-minload ranges0–10.03/0–9.54 retain earlier activity and do not certify continuous service/VM idleness. Full default dev492e1505ab/imagefc4c330b; exact prototype7585c2e9d/imaged6bd211c; r8 changes no native inputs.

Evidence DOES NOT establish that all shared tail is architecture-independent: shared fourth-windowp99/peak51.55/117.56ms is much worse than shipping17.52/23.32. Early900s diagnostic50.696ms probe has42.789ms after socket delivery; it cannot attribute these later117.56ms uninstrumented batches. No runtime fix/target waiver adopted. Next: retain the same host through5400s of original mixed preconditioning, then capture900s stages/scheduler/wait/faults in one final short hold, explicitly diagnostic (including a phase-reset census/resize). This avoids another speculative native edit and keeps trace lifetime bounded. D128 remains pending.

Full original pair and owner/scope proofs, dev every-segment report, shared every-segment report, pooled summaries/loads.

r8 complete uninstrumented matched admission pair, head30bdfffc5. Both7200active seconds/720samples,1000/1000 final sessions responsive,flatfds/threads; sequential fixtures,5GiB cap,1000sessions/seed270205/warmup600/interval10 and original commands/thresholds. All five segments of BOTH architectures fail5ms.27 observed foreign-activity cohorts excluded per architecture;63,400 retained probes each. Native driver exits1 in both; controller exits0 means cleanup completed, not admission passed. Both fixture scopes and controller are inactive/empty after cleanup. |segment|dev p50/p99 ms|shared p50/p99 ms|dev/shared peak batch p99 ms|dev/shared accepted(excluded) cohorts| |---|---:|---:|---:|---:| |1|9.674826/31.986927|8.317731/22.289053|41.520153/32.312862|107(4)/109(4)| |2|8.648694/27.592736|8.918165/29.376252|34.517981/59.876948|170(4)/168(6)| |3|7.408188/19.895097|9.835281/29.094703|27.592632/58.143946|167(7)/166(8)| |4|7.778586/17.521621|9.016171/51.550411|23.315687/117.556291|166(8)/169(5)| |5|9.556674/32.772988|7.123930/13.676745|35.776108/14.338801|24(4)/22(4)| Retained pooledp50/p99 dev8.237526/24.529014ms,shared8.935071/31.133070ms. Aggregate shim/host PSS growth426,980/184KiB respectively; control fd/thread7000/1000,shared3005/1 flat. Per-cohort loads/owner/actualflock remain in raw receipts; retained1-minload ranges0–10.03/0–9.54 retain earlier activity and do not certify continuous service/VM idleness. Full default dev492e1505ab/imagefc4c330b; exact prototype7585c2e9d/imaged6bd211c; r8 changes no native inputs. Evidence DOES NOT establish that all shared tail is architecture-independent: shared fourth-windowp99/peak51.55/117.56ms is much worse than shipping17.52/23.32. Early900s diagnostic50.696ms probe has42.789ms after socket delivery; it cannot attribute these later117.56ms uninstrumented batches. No runtime fix/target waiver adopted. Next: retain the same host through5400s of original mixed preconditioning, then capture900s stages/scheduler/wait/faults in one final short hold, explicitly diagnostic (including a phase-reset census/resize). This avoids another speculative native edit and keeps trace lifetime bounded. D128 remains pending. [Full original pair and owner/scope proofs](https://git.kayg.org/attachments/2a8091a3-aaf0-4d8b-a382-f79fa919a19c), [dev every-segment report](https://git.kayg.org/attachments/f946bd5b-f042-4663-8829-9e547fb10bd6), [shared every-segment report](https://git.kayg.org/attachments/56da5305-21a3-4908-98cc-656429c9ef9f), [pooled summaries/loads](https://git.kayg.org/attachments/6515104c-21af-4e98-b002-8d5ca3c652c6).
kayg commented 2026-10-16 10:01:52 +00:00
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r8 attribution follow-up pushed0f8b66068 (wrapper/tests),09636b1e3 (research notes).97 observer tests pass after the missing-wrapper red test. Native/default inputs unchanged. New ppu_aged_tail.py retains original mixed workload/session state for5400active seconds, then the existing900s profile with600s settle. Census, task restart and resize at the boundary are explicit diagnostic differences; this cannot replace the completed unchanged admission pair. Preconditioning’s bounded-ring overflow stays in the full raw file; a signalled/fenced byte boundary defines a separate capture view without truncation or weakening capture loss checks.

Running serially on perfVM p8d:serviceppu-r8d-control-a8006ef3/controller1008129,coordinator1008132,scopeppu-soak-r8d-aged/description67f93e38ead7490295735f052753d14b. Full fixture6300active seconds under1740s maximum holds/owner file/5GiB cap. Only final900s full syscall/scheduler capture; no concurrent fixture from this job. Positive own observer proof1015157/birth24137757/watch.py/session-c8319.scope; preserve as declared overhead. Native diagnosticimaged2674a33/source d83529a; wrapper source0f8b66068. Build-slot iterate/fast now running on09636b1e3; previous head30b gate remains size-only red. No speculative native fix or5ms waiver; D128 pending.

Red test, 97 passing checks, controller/image manifest, durable serial controller.

r8 attribution follow-up pushed0f8b66068 (wrapper/tests),09636b1e3 (research notes).97 observer tests pass after the missing-wrapper red test. Native/default inputs unchanged. New ppu_aged_tail.py retains original mixed workload/session state for5400active seconds, then the existing900s profile with600s settle. Census, task restart and resize at the boundary are explicit diagnostic differences; this cannot replace the completed unchanged admission pair. Preconditioning’s bounded-ring overflow stays in the full raw file; a signalled/fenced byte boundary defines a separate capture view without truncation or weakening capture loss checks. Running serially on perfVM p8d:serviceppu-r8d-control-a8006ef3/controller1008129,coordinator1008132,scopeppu-soak-r8d-aged/description67f93e38ead7490295735f052753d14b. Full fixture6300active seconds under1740s maximum holds/owner file/5GiB cap. Only final900s full syscall/scheduler capture; no concurrent fixture from this job. Positive own observer proof1015157/birth24137757/watch.py/session-c8319.scope; preserve as declared overhead. Native diagnosticimaged2674a33/source d83529a; wrapper source0f8b66068. Build-slot iterate/fast now running on09636b1e3; previous head30b gate remains size-only red. No speculative native fix or5ms waiver; D128 pending. [Red test](https://git.kayg.org/attachments/ae7a35c9-7d0e-4002-a331-aa92a6f5a3d1), [97 passing checks](https://git.kayg.org/attachments/9a82bb47-50db-4972-9ea5-ffc9f613d83c), [controller/image manifest](https://git.kayg.org/attachments/4b4067d7-e2ad-4aae-bafc-c862ebfeb1db), [durable serial controller](https://git.kayg.org/attachments/9e06e51f-33c8-48db-8a5e-b5e14b865e6d).
kayg commented 2026-10-16 10:34:33 +00:00
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r8 diagnostic correction pushed682d65fb8/source,013a26a62/docs;101 observer checks pass after the continuity test failed first. The original loop, readers, load/churn tasks, RNG and accumulated samples now run once for6300active seconds. Full trace activates after5400; final capture stays<=900s. Existing wakeup counter identity attaches when tracing starts. Early completion cannot claim a capture; original exceptions and private-trace cleanup are tested. Marker observer/extra boundary fence/tracing remain explicit overhead, never unchanged admission.

Stopped earlier phase-restart diagnosticD at1550s/155samples, before full tracing; its native state was retained but restarting the observer later would discard the sample history we need to inspect. D is censored, not a failed admission or completed profile. Tagged service/scope are empty/inactive; all private trace instances gone; verified observer1015157/birth24137757 stopped only by pidfd. Complete cleanup receipt below supersedes the earlier partial cleanup text.

New serial controllerE1048089/serviceppu-r8e-control-29a1768d/tag29a1768dd238412d86306a14cd8157e9: short real-engine deferred-start/correlation check first, then continuous6300s aged run only if that check succeeds. Both use1000sessions/image d2674a33 and segmented lock/owner/5GiB cap. Functional coordinator1048093 is queued. Positive observer1048315/birth24333608/watch.py/session-c8354.scope. Build-slot iterate/fast remains queued; no second slot command started. No native fix, threshold change or D128 claim.

Censored D raw prefix, complete D cleanup proof, continuity red, 101 checks green, E manifest, serial controller.

r8 diagnostic correction pushed682d65fb8/source,013a26a62/docs;101 observer checks pass after the continuity test failed first. The original loop, readers, load/churn tasks, RNG and accumulated samples now run once for6300active seconds. Full trace activates after5400; final capture stays<=900s. Existing wakeup counter identity attaches when tracing starts. Early completion cannot claim a capture; original exceptions and private-trace cleanup are tested. Marker observer/extra boundary fence/tracing remain explicit overhead, never unchanged admission. Stopped earlier phase-restart diagnosticD at1550s/155samples, before full tracing; its native state was retained but restarting the observer later would discard the sample history we need to inspect. D is censored, not a failed admission or completed profile. Tagged service/scope are empty/inactive; all private trace instances gone; verified observer1015157/birth24137757 stopped only by pidfd. Complete cleanup receipt below supersedes the earlier partial cleanup text. New serial controllerE1048089/serviceppu-r8e-control-29a1768d/tag29a1768dd238412d86306a14cd8157e9: short real-engine deferred-start/correlation check first, then continuous6300s aged run only if that check succeeds. Both use1000sessions/image d2674a33 and segmented lock/owner/5GiB cap. Functional coordinator1048093 is queued. Positive observer1048315/birth24333608/watch.py/session-c8354.scope. Build-slot iterate/fast remains queued; no second slot command started. No native fix, threshold change or D128 claim. [Censored D raw prefix](https://git.kayg.org/attachments/43f85286-6684-4863-874b-3f027b440819), [complete D cleanup proof](https://git.kayg.org/attachments/4b9d03d2-702d-4fd4-9e27-2efeb6c756b7), [continuity red](https://git.kayg.org/attachments/0c905206-3c26-4fae-adf2-24903761be15), [101 checks green](https://git.kayg.org/attachments/f73ead5f-6282-42b8-b4a8-d290bd0e0369), [E manifest](https://git.kayg.org/attachments/0b5fcaee-cc41-4345-a9e0-c826414305dc), [serial controller](https://git.kayg.org/attachments/95b36ac8-c170-4f8d-943f-4abbcc9b01da).
kayg commented 2026-10-16 10:47:11 +00:00
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r8 deferred-trace real-engine check passed at013a26a62: same1000PTYS,20s continuous workload with full trace only final10s;1000/1000 probe markers correlated exactly against41,346 native stage records,zero trace overruns,1000/1000 final sessions responsive. Numeric collector retained165,386 events/1042 kernel stacks. This is a functional lifecycle/correlation check, not a latency-budget pass. Raw full stage prefix, explicit byte view, markers, events, roles and ownership receipts attached.

Serial controller then cleaned that scope and started the single6300s continuous aged diagnostic:coordinator1067480,scopeppu-soak-r8e-aged/description7eb1d2c9670e448d89f10e1a9a42e9c7. Original loop/reader/tasks/RNG/sample history retained; full trace starts5400s. Same nativeimaged2674a33/seed270205/1000sessions/5GiB cap/1740s holds; only declared own observerc8354. No native edit or admission waiver. Current head build-slot iterate/fast still queued; no parallel slot wrapper started.

Complete functional raw receipts and byte view.

r8 deferred-trace real-engine check passed at013a26a62: same1000PTYS,20s continuous workload with full trace only final10s;1000/1000 probe markers correlated exactly against41,346 native stage records,zero trace overruns,1000/1000 final sessions responsive. Numeric collector retained165,386 events/1042 kernel stacks. This is a functional lifecycle/correlation check, not a latency-budget pass. Raw full stage prefix, explicit byte view, markers, events, roles and ownership receipts attached. Serial controller then cleaned that scope and started the single6300s continuous aged diagnostic:coordinator1067480,scopeppu-soak-r8e-aged/description7eb1d2c9670e448d89f10e1a9a42e9c7. Original loop/reader/tasks/RNG/sample history retained; full trace starts5400s. Same nativeimaged2674a33/seed270205/1000sessions/5GiB cap/1740s holds; only declared own observerc8354. No native edit or admission waiver. Current head build-slot iterate/fast still queued; no parallel slot wrapper started. [Complete functional raw receipts and byte view](https://git.kayg.org/attachments/e700c77c-4a70-4259-a28c-79f3d66ee7d4).
kayg commented 2026-10-16 10:58:43 +00:00
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r8 gate resource wait at2026-10-16 10:58UTC: one iterate→fast build-slot wrapper remains queued, no gate-head file/no heavy command started. All four ordinary slot files have active flock entries (kernel-reported PIDs3886812/212401/80854/3969634). No slot count/priority/other job changed and no second wrapper started. Current head013a26a62 has101 passing observer checks; previous30bdfffc5 full gate is recorded but is not relabelled current-head verification. The continuous perf diagnostic proceeds independently,>1200active seconds; full kernel capture still deferred until5400.

Numeric lock snapshot; no command arguments or credential data read.

r8 gate resource wait at2026-10-16 10:58UTC: one iterate→fast build-slot wrapper remains queued, no gate-head file/no heavy command started. All four ordinary slot files have active flock entries (kernel-reported PIDs3886812/212401/80854/3969634). No slot count/priority/other job changed and no second wrapper started. Current head013a26a62 has101 passing observer checks; previous30bdfffc5 full gate is recorded but is not relabelled current-head verification. The continuous perf diagnostic proceeds independently,>1200active seconds; full kernel capture still deferred until5400. [Numeric lock snapshot; no command arguments or credential data read](https://git.kayg.org/attachments/31471999-0699-4066-a762-58c51c01cd07).
kayg commented 2026-10-16 12:58:43 +00:00
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r8 mature continuous E capture complete:6300.025active seconds,630samples,1000/1000 final sessions responsive,flat3006fds/one hostthread,PSS growth160KiB.9000/9000 profile markers correlate,zero trace overruns;8700 retained after3 capture cohorts excluded (5810/5960/6110s,unknown scope transitions). Whole5400–6300 diagnostic window,explicit extra observer costs: p50 11.963544/p99 24.816653/max30.554535ms. Reader accounted CPU p50 5.866265/p99 14.742072ms inside probe windows; not a production lower bound.

Slowest accepted907/cohort555:RTT30.554535ms,ingress2.188804,inputqueue0.002830,PTYwrite→read26.067769,VTinterval0.004848,framebuild0.000219,socketcall0.003295,post-socket lower2.270189ms. During the PTY interval shell907 is runnable21.024ms (running-upper0.265);hostrunnable9.35/sleeping12.584/running-upper4.133769ms. Main readerCPU19.688507ms overlaps these roles; do not add/subtract shares. No dump overlap or host fault/reclaim events;reader has9 page_fault_user events (not classified major/minor);shell907 faults untraced. Host waits are epoll stacks,not evidence of a long VT parse or a productive-read wait in this probe. No native fix selected.

The117.556ms admission peak was at6920.15s,outside E’s window.8cf32c3b2/source+16fc50415/docs move the continuous diagnostic to6020–6920 with unchanged900s capture cap;102 checks pass after the bounds test failed. F now runs serially after E:serviceppu-r8f-control-b6bed3dc/controller1217034/coordinator1217038,scopeppu-soak-r8f-late/description4e138e368fdd435b90cba204e41002c9;source16fc50415/nativeimaged2674a33. Positive watcher1222507/birth25153288/watch.py/c8527. Same1000sessions/seed270205/commands/cap/short holds; original5ms admission staysFAIL. E coordinator overhead11.5s leaves the target window inside the fourth hold.

Cleanup found E’s disabled wakeup instance retained after empty scopes:collector inherited the older counter’s trace_pipe. Verified off/event0/filterhost1067485/dead reader1067482+host,then removed only that instance. d48996b72 closes other private trace-pipe copies in the child,retains its own trace and parent descriptors; real-fork ownership test failed first,103 checks now pass. Current F loaded16fc before this teardown-only fix; timing is unchanged and its old counter instance will be checked/retired explicitly. A short real-engine cleanup check of the fix follows F. No D128/default/threshold change.

e-aged-summary.txt
e-aged-causal-summary.txt
e-aged-causal-report.txt
e-aged-view-receipt.txt
e-aged-complete-raw.tar.gz
e-cleanup-check.txt
e-counter-cleanup.txt
counter-fd-red.log
counter-fd-green.log
late-controller-manifest.json
ppu_r8_late_serial.py.txt

r8 mature continuous E capture complete:6300.025active seconds,630samples,1000/1000 final sessions responsive,flat3006fds/one hostthread,PSS growth160KiB.9000/9000 profile markers correlate,zero trace overruns;8700 retained after3 capture cohorts excluded (5810/5960/6110s,unknown scope transitions). Whole5400–6300 diagnostic window,explicit extra observer costs: p50 11.963544/p99 24.816653/max30.554535ms. Reader accounted CPU p50 5.866265/p99 14.742072ms inside probe windows; not a production lower bound. Slowest accepted907/cohort555:RTT30.554535ms,ingress2.188804,inputqueue0.002830,PTYwrite→read26.067769,VTinterval0.004848,framebuild0.000219,socketcall0.003295,post-socket lower2.270189ms. During the PTY interval shell907 is runnable21.024ms (running-upper0.265);hostrunnable9.35/sleeping12.584/running-upper4.133769ms. Main readerCPU19.688507ms overlaps these roles; do not add/subtract shares. No dump overlap or host fault/reclaim events;reader has9 page_fault_user events (not classified major/minor);shell907 faults untraced. Host waits are epoll stacks,not evidence of a long VT parse or a productive-read wait in this probe. No native fix selected. The117.556ms admission peak was at6920.15s,outside E’s window.8cf32c3b2/source+16fc50415/docs move the continuous diagnostic to6020–6920 with unchanged900s capture cap;102 checks pass after the bounds test failed. F now runs serially after E:serviceppu-r8f-control-b6bed3dc/controller1217034/coordinator1217038,scopeppu-soak-r8f-late/description4e138e368fdd435b90cba204e41002c9;source16fc50415/nativeimaged2674a33. Positive watcher1222507/birth25153288/watch.py/c8527. Same1000sessions/seed270205/commands/cap/short holds; original5ms admission staysFAIL. E coordinator overhead11.5s leaves the target window inside the fourth hold. Cleanup found E’s disabled wakeup instance retained after empty scopes:collector inherited the older counter’s trace_pipe. Verified off/event0/filterhost1067485/dead reader1067482+host,then removed only that instance. d48996b72 closes other private trace-pipe copies in the child,retains its own trace and parent descriptors; real-fork ownership test failed first,103 checks now pass. Current F loaded16fc before this teardown-only fix; timing is unchanged and its old counter instance will be checked/retired explicitly. A short real-engine cleanup check of the fix follows F. No D128/default/threshold change. [e-aged-summary.txt](https://git.kayg.org/attachments/b5345dbf-6798-47b9-b069-c3b0b57457ca) [e-aged-causal-summary.txt](https://git.kayg.org/attachments/31f1c217-f46f-4a89-ba68-44e468a89c46) [e-aged-causal-report.txt](https://git.kayg.org/attachments/90120362-6b11-4a7f-8d64-87e53c666e13) [e-aged-view-receipt.txt](https://git.kayg.org/attachments/2e032b79-3521-4bfa-88f4-219e03a94787) [e-aged-complete-raw.tar.gz](https://git.kayg.org/attachments/8e6fc762-c678-49a2-b1c9-7b5dfd4b7024) [e-cleanup-check.txt](https://git.kayg.org/attachments/2b33521d-7c95-416a-987e-fb18fd9e4a20) [e-counter-cleanup.txt](https://git.kayg.org/attachments/59503be8-a5d4-4404-86a3-4ae0e868d4b7) [counter-fd-red.log](https://git.kayg.org/attachments/0a0ce9e7-b8f3-4ade-9a0d-73818df5b18f) [counter-fd-green.log](https://git.kayg.org/attachments/bc230723-7a8f-4021-9660-f095de700a9a) [late-controller-manifest.json](https://git.kayg.org/attachments/57c18939-faab-406c-b583-e02cdaf1bae2) [ppu_r8_late_serial.py.txt](https://git.kayg.org/attachments/c65f6c9e-df96-4ff6-ba8d-38e7e552bc9d)
kayg commented 2026-10-16 13:31:13 +00:00
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Current-head verification d48996b728 (begin=end), through one build-slot. scripts/verify fast exits1 only at known absolute static-size caps; functional Rust rows pass and independent ts_verify_fast exits0. x86 default22,277,392 vs22,204,304 cap (+73,088B);ARM19,705,112 vs19,638,744 (+66,368B). Opt-in lane remains+4,384B vs16,384B allowance: retained exact7585 artifact2,529,216 vsbase8cd43 artifact2,524,832; all r8 native build inputs unchanged. This bridge is explicit, not a claim that the retained feature image was freshly built at d489.

Current iterate’s configured-delay proxy self-test missed its300±jitter fixture bound under build-host load; same unchanged self-test/threshold passes in fast. No waiver/source/threshold change. These delay-fixture timings are functional gate receipts, not perf-VM echo evidence.

Fast Rust output verbatim:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

verify-current-fast.log
verify-current-iterate.log
verify-current-ts.log
size-current.json

F’s6020–6920 diagnostic remains active; it loaded16fc before the diagnostic-only FD cleanup fix. No native input-path fix or original5ms admission success claimed. Cleanup integration of d489 follows F; no merge/deploy.

Current-head verification d48996b728b24dde4fca4078087d71c89de1c64a (begin=end), through one build-slot. scripts/verify fast exits1 only at known absolute static-size caps; functional Rust rows pass and independent ts_verify_fast exits0. x86 default22,277,392 vs22,204,304 cap (+73,088B);ARM19,705,112 vs19,638,744 (+66,368B). Opt-in lane remains+4,384B vs16,384B allowance: retained exact7585 artifact2,529,216 vsbase8cd43 artifact2,524,832; all r8 native build inputs unchanged. This bridge is explicit, not a claim that the retained feature image was freshly built at d489. Current iterate’s configured-delay proxy self-test missed its300±jitter fixture bound under build-host load; same unchanged self-test/threshold passes in fast. No waiver/source/threshold change. These delay-fixture timings are functional gate receipts, not perf-VM echo evidence. Fast Rust output verbatim: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` [verify-current-fast.log](https://git.kayg.org/attachments/2a37e757-33f4-49b0-9480-7ce5c8758956) [verify-current-iterate.log](https://git.kayg.org/attachments/94c9758d-1403-4e39-8606-83e1b4f63b27) [verify-current-ts.log](https://git.kayg.org/attachments/32fa2cef-4d4b-47b4-a54d-1f0da1b2fa62) [size-current.json](https://git.kayg.org/attachments/1388658f-5742-42c4-b9a3-3ae4e3fce1cc) F’s6020–6920 diagnostic remains active; it loaded16fc before the diagnostic-only FD cleanup fix. No native input-path fix or original5ms admission success claimed. Cleanup integration of d489 follows F; no merge/deploy.
kayg commented 2026-10-16 14:59:11 +00:00
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r8 final late attribution at pushed d48996b728 [D270]. F completed 6920.012 active seconds / 692 samples, one original workload loop; full trace only6020–6920, short locked holds/owner file.1000/1000 sessions responsive,3006fds/1thread flat,PSSgrowth176KiB.9000/9000 markers,zero overruns,9000 retained probes/no observed foreign-scope exclusions. Diagnostic p50/p99/max9.715972/28.007691/58.569175ms; original5ms remains FAIL.

Slowest cohort612/session903:58.569175ms RTT; ingress1.500147,inputqueue0.004336,PTYwrite→read22.838118,VT0.003302,framebuild0.000056,socketcall0.018705ms. At least34.186738ms (58.37% of THIS probe) after complete frame write. In that post-socket interval reader running-upper16.122986/runnable16.561/sleep1.521457ms; PTY interval host runnable16.607ms. Whole-reader CPU25.998048ms overlaps roles. Host faults/reclaim none observed;reader9userfaults,shell faults unknown;no dump overlap. Timer slack50000ns; load7.28/3.18/1.38, own flock. No CPU stack attribution to a specific Python function. Common timed gather scripts/bench/ppu_soak.py:466 and native PTY read crates/infraternal-shim/src/user_host.rs:701 identify measured boundaries, not an invented hot-function cause.

Exact117.556ms historical batch did not reproduce and remains unattributed. These captures support VM runnable delay and common reader-side cost in representative tails; neither p99 subtraction nor individual58.37%/84.40% post-write shares establishes a population architecture-independent fraction. No speculative native runtime fix made.

Proposed calibrated fixture target (NOT adopted): per-segment pooledp99 <= fresh matched shipping control+2ms AND peak batchp99 <= control+5ms; paired controls around candidates, unchanged1000sessions/seed/commands/cadence/exclusions, retain5ms product goal. Owner/orchestrator decides margins. This proposal STILL REJECTS current segments2,3,4. D128 remains pending.

G real-engine cleanup integration of d489:1000/1000 markers/42,099 stages/zero overruns/1000 responsive; both private trace instances absent after cleanup. Functional cleanup/correlation PASS, not latency admission. F loaded pre-fix16fc; its disabled inherited counter was verified dead/off then removed. F/G scopes and services now inactive/empty.

f-late-summary.txt
f-late-causal-summary.txt
f-late-causal-report.txt
f-late-probe-environment.txt
f-late-view-receipt.txt
f-late-complete-raw.tar.gz
g-cleanup-complete-raw.tar.gz
f-g-cleanup-check.txt
cleanup-controller-complete.json
ppu_r8_cleanup_serial.py.txt
target-proposal.txt

r8 final late attribution at pushed d48996b728b24dde4fca4078087d71c89de1c64a [D270]. F completed 6920.012 active seconds / 692 samples, one original workload loop; full trace only6020–6920, short locked holds/owner file.1000/1000 sessions responsive,3006fds/1thread flat,PSSgrowth176KiB.9000/9000 markers,zero overruns,9000 retained probes/no observed foreign-scope exclusions. Diagnostic p50/p99/max9.715972/28.007691/58.569175ms; original5ms remains FAIL. Slowest cohort612/session903:58.569175ms RTT; ingress1.500147,inputqueue0.004336,PTYwrite→read22.838118,VT0.003302,framebuild0.000056,socketcall0.018705ms. At least34.186738ms (58.37% of THIS probe) after complete frame write. In that post-socket interval reader running-upper16.122986/runnable16.561/sleep1.521457ms; PTY interval host runnable16.607ms. Whole-reader CPU25.998048ms overlaps roles. Host faults/reclaim none observed;reader9userfaults,shell faults unknown;no dump overlap. Timer slack50000ns; load7.28/3.18/1.38, own flock. No CPU stack attribution to a specific Python function. Common timed gather scripts/bench/ppu_soak.py:466 and native PTY read crates/infraternal-shim/src/user_host.rs:701 identify measured boundaries, not an invented hot-function cause. Exact117.556ms historical batch did not reproduce and remains unattributed. These captures support VM runnable delay and common reader-side cost in representative tails; neither p99 subtraction nor individual58.37%/84.40% post-write shares establishes a population architecture-independent fraction. No speculative native runtime fix made. Proposed calibrated fixture target (NOT adopted): per-segment pooledp99 <= fresh matched shipping control+2ms AND peak batchp99 <= control+5ms; paired controls around candidates, unchanged1000sessions/seed/commands/cadence/exclusions, retain5ms product goal. Owner/orchestrator decides margins. This proposal STILL REJECTS current segments2,3,4. D128 remains pending. G real-engine cleanup integration of d489:1000/1000 markers/42,099 stages/zero overruns/1000 responsive; both private trace instances absent after cleanup. Functional cleanup/correlation PASS, not latency admission. F loaded pre-fix16fc; its disabled inherited counter was verified dead/off then removed. F/G scopes and services now inactive/empty. [f-late-summary.txt](https://git.kayg.org/attachments/21f7b9b2-0bed-4294-ac85-cd2582cf6353) [f-late-causal-summary.txt](https://git.kayg.org/attachments/ad1a2ece-dff8-435f-815f-c51aec2abe87) [f-late-causal-report.txt](https://git.kayg.org/attachments/0cc5fc62-0689-466a-aef6-5695aee0abda) [f-late-probe-environment.txt](https://git.kayg.org/attachments/c48656fb-8ec0-4c66-a64f-d881b5d07c0e) [f-late-view-receipt.txt](https://git.kayg.org/attachments/081f2deb-46c8-47bd-b6a8-01ce1d03ff2a) [f-late-complete-raw.tar.gz](https://git.kayg.org/attachments/e97879b3-f82b-41b8-aa13-cf9664948a2f) [g-cleanup-complete-raw.tar.gz](https://git.kayg.org/attachments/923bf77c-7bd9-4e5c-af4b-c01104e0121b) [f-g-cleanup-check.txt](https://git.kayg.org/attachments/f07e4e49-dc59-45b8-bc3d-2f1101d16f9a) [cleanup-controller-complete.json](https://git.kayg.org/attachments/8ed9698f-9206-4633-9fe7-17f17780cca8) [ppu_r8_cleanup_serial.py.txt](https://git.kayg.org/attachments/6d760722-b129-4b58-8d45-bd1da353429a) [target-proposal.txt](https://git.kayg.org/attachments/879e6a0a-c066-4bd3-9398-a44f7526b191)
kayg commented 2026-10-16 14:59:55 +00:00
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r8 handoff for delta review: HEAD=origin/process-per-user=d48996b728b24dde4fca4078087d71c89de1c64a. All logical changes committed/pushed; preexisting untracked scripts/pycache/ left alone. No merge/deploy/default change. No native runtime fix selected from incomplete attribution. D128 pending;5ms acceptance NOT achieved.

Original7200-active-second admission pair: dev/prototype pooledp99 24.529014/31.133070ms; every segment fails5ms,63400 retained probes each after27 observed-contention cohort exclusions each. Per-segment p50/p99 and all raw evidence posted above. Prototype117.556291ms peak remains unattributed; late diagnostic maximum58.569175ms shows34.186738ms after fullframewrite and16.607ms host runnable during its PTY interval, not a causal share for the population. Proposal to compare against matched shipping controls is posted for owner decision, not adopted; proposed margins would still reject3/5 prototype segments.

103 observer tests pass. Final current-head scripts/verify fast through build-slot exits1 only known absolute-size caps; Rust functional rows PASS, independent TypeScript0. Current iterate configured-delay fixture missed bound; same unchanged fixture passes fast. Lane delta+4384B within16384B budget, retained feature image/native-input equivalence stated explicitly. Default x86/ARM absolute cap excess73088/66368B. No threshold waiver.

Fast output verbatim:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

verify-current-fast.log
verify-current-iterate.log
verify-current-ts.log
size-current.json

All own fixtures/controllers stopped, private trace instances retired;1000-session cleanup integration passes with no residual private instances. Owned remote p8/p8b/p8c/p8d/p8e/p8f/p8g temporary directories and local build target removed after evidence attachment; temporary baseline already removed. No active benchmark or held perf lock from this job. Evidence stays outside checkout. Review checklist and resumable state:
author-checklist.txt
submission-state.json
final-cleanup.txt

r8 handoff for delta review: HEAD=origin/process-per-user=d48996b728b24dde4fca4078087d71c89de1c64a. All logical changes committed/pushed; preexisting untracked scripts/__pycache__/ left alone. No merge/deploy/default change. No native runtime fix selected from incomplete attribution. D128 pending;5ms acceptance NOT achieved. Original7200-active-second admission pair: dev/prototype pooledp99 24.529014/31.133070ms; every segment fails5ms,63400 retained probes each after27 observed-contention cohort exclusions each. Per-segment p50/p99 and all raw evidence posted above. Prototype117.556291ms peak remains unattributed; late diagnostic maximum58.569175ms shows34.186738ms after fullframewrite and16.607ms host runnable during its PTY interval, not a causal share for the population. Proposal to compare against matched shipping controls is posted for owner decision, not adopted; proposed margins would still reject3/5 prototype segments. 103 observer tests pass. Final current-head scripts/verify fast through build-slot exits1 only known absolute-size caps; Rust functional rows PASS, independent TypeScript0. Current iterate configured-delay fixture missed bound; same unchanged fixture passes fast. Lane delta+4384B within16384B budget, retained feature image/native-input equivalence stated explicitly. Default x86/ARM absolute cap excess73088/66368B. No threshold waiver. Fast output verbatim: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` [verify-current-fast.log](https://git.kayg.org/attachments/2a37e757-33f4-49b0-9480-7ce5c8758956) [verify-current-iterate.log](https://git.kayg.org/attachments/94c9758d-1403-4e39-8606-83e1b4f63b27) [verify-current-ts.log](https://git.kayg.org/attachments/32fa2cef-4d4b-47b4-a54d-1f0da1b2fa62) [size-current.json](https://git.kayg.org/attachments/1388658f-5742-42c4-b9a3-3ae4e3fce1cc) All own fixtures/controllers stopped, private trace instances retired;1000-session cleanup integration passes with no residual private instances. Owned remote p8/p8b/p8c/p8d/p8e/p8f/p8g temporary directories and local build target removed after evidence attachment; temporary baseline already removed. No active benchmark or held perf lock from this job. Evidence stays outside checkout. Review checklist and resumable state: [author-checklist.txt](https://git.kayg.org/attachments/2ea5b40a-97e0-48bf-a034-f86f3e737649) [submission-state.json](https://git.kayg.org/attachments/47912fd1-cce9-442f-b71e-98ff0604b00a) [final-cleanup.txt](https://git.kayg.org/attachments/949d8a1e-684f-471d-b9e0-092dfbeda49d)
kayg commented 2026-10-17 03:11:08 +00:00
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Priority continuation start: process-per-user at d48996b728; fetched origin/dev 06be8b0000. #205 has no parent. Preserve the 166-commit measured research history with a merge of dev (363 commits advanced), rather than replaying intermediate experiments; merge preview has one Cargo.toml conflict. PPU-R1 regression/fix already exist as 2062dcbb1 (including inherited custom disposition); parser ownership/cgroup fixes also exist and will be revalidated against the merged head, not duplicated. D296 shipping-relative pooled p99 is the target. No real-logins branch changes, merge into dev, deploy or default switch. Heavy gates via build-slot; performance only on the named VM under bounded flock/owner-file holds. Existing untracked scripts/pycache/ left untouched.

Priority continuation start: process-per-user at d48996b728b24dde4fca4078087d71c89de1c64a; fetched origin/dev 06be8b0000f7d476eeeeed3472a4605757151243. #205 has no parent. Preserve the 166-commit measured research history with a merge of dev (363 commits advanced), rather than replaying intermediate experiments; merge preview has one Cargo.toml conflict. PPU-R1 regression/fix already exist as 2062dcbb1 (including inherited custom disposition); parser ownership/cgroup fixes also exist and will be revalidated against the merged head, not duplicated. D296 shipping-relative pooled p99 is the target. No real-logins branch changes, merge into dev, deploy or default switch. Heavy gates via build-slot; performance only on the named VM under bounded flock/owner-file holds. Existing untracked scripts/__pycache__/ left untouched.
kayg commented 2026-10-17 03:37:20 +00:00
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Priority items 1–2 complete. Rebased onto origin/dev 06be8b000 (not merged). Replayed 166 commits; the already-upstream TLS change became empty after retaining dev's Cargo declarations. Rebased tree e4b4c16202 exactly equals the validated integration tree. Pushed D296 admission note 75a88c8f7, then PPU-R1 executable acceptance notes dbcbe89696 (current head). Force-with-lease used only for the rebase; no other branch changed.

PPU-R1 implementation was already 2062dcbb1, now 69eee9f6c after replay; the original review regression is included there, so a second cherry-pick would duplicate it. The real-host suite passes 4/4, including inherited ignore and in-fixture custom SA_NOCLDWAIT, successful default startup, ordered exit 7 and sibling input. Feature library 159 pass / 21 explicit ignores; feature all-target Clippy, CLI all-target Clippy, fmt PASS; 103 observer checks PASS. These are functional checks, not perf evidence or final fast.

Next: native-owner assertions supplement the existing long-control-string regression, then a fresh actual cgroup gate; the old P0 repair is present, not an ignored test being relabeled green. Fresh D296 comparison uses three pairs, 1000 sessions, seed270205, original commands/mix/cadence, 900s each with600s warmup, balanced order. This shorter current comparison does not recertify the prior 7200s aging result. Old5ms outcomes stay untouched; D296 compares pooled native echoes to matched shipping. Default unchanged; no deploy.

merge-gate.log
rebase.log
observer-tests.log

Priority items 1–2 complete. Rebased onto origin/dev 06be8b000 (not merged). Replayed 166 commits; the already-upstream TLS change became empty after retaining dev's Cargo declarations. Rebased tree e4b4c162026299e41c440b7aaca76105d84b46c9 exactly equals the validated integration tree. Pushed D296 admission note 75a88c8f7, then PPU-R1 executable acceptance notes dbcbe896967583bf610a3e835f56fc251effbfd3 (current head). Force-with-lease used only for the rebase; no other branch changed. PPU-R1 implementation was already 2062dcbb1, now 69eee9f6c after replay; the original review regression is included there, so a second cherry-pick would duplicate it. The real-host suite passes 4/4, including inherited ignore and in-fixture custom SA_NOCLDWAIT, successful default startup, ordered exit 7 and sibling input. Feature library 159 pass / 21 explicit ignores; feature all-target Clippy, CLI all-target Clippy, fmt PASS; 103 observer checks PASS. These are functional checks, not perf evidence or final fast. Next: native-owner assertions supplement the existing long-control-string regression, then a fresh actual cgroup gate; the old P0 repair is present, not an ignored test being relabeled green. Fresh D296 comparison uses three pairs, 1000 sessions, seed270205, original commands/mix/cadence, 900s each with600s warmup, balanced order. This shorter current comparison does not recertify the prior 7200s aging result. Old5ms outcomes stay untouched; D296 compares pooled native echoes to matched shipping. Default unchanged; no deploy. [merge-gate.log](https://git.kayg.org/attachments/3b15891d-827a-48a4-a8d5-0482dac9eff6) [rebase.log](https://git.kayg.org/attachments/0747a0d6-bb60-42cd-a4f3-fdf3cf48757d) [observer-tests.log](https://git.kayg.org/attachments/2d51fe4a-ce0f-4df8-a291-79285354cda3)
kayg commented 2026-10-17 03:46:52 +00:00
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Priority item3 source check: 3153bc730e committed/pushed. Strengthened the retained long-string regression to inspect native ordinary ownership and accounted carry, and to reject native allocation refusal during streaming discard for all five string classes. Exact regression1/1, fmt and compact-feature all-target Clippy PASS. This supplements the existing repair; it is not the actual cgroup proof, which is still pending the staged image.

The build slot is now producing full-feature shipping/prototype/diagnostic static images with matched role sets, plus the current default image for D243 delta against fetched origin/dev06be8b000. No runtime fix/default change. Diagnostic-only numeric frame bins/byte totals/reset have a functional check; short reader CPU capture plus existing native stages/scheduler/kernel-wait traces will test the batching hypothesis. Shipping session.rs drains up to16 immediate reads into16KiB; optional user_host.rs permits4 reads and only4KiB for promoted replies. That source difference is a hypothesis to measure, not evidence that it explains the historical6.5ms tail gap.

memory-unit-gate.log
reader-profile-functional.log

Priority item3 source check: 3153bc730ec26f70f481caa1ff56a9d588533694 committed/pushed. Strengthened the retained long-string regression to inspect native ordinary ownership and accounted carry, and to reject native allocation refusal during streaming discard for all five string classes. Exact regression1/1, fmt and compact-feature all-target Clippy PASS. This supplements the existing repair; it is not the actual cgroup proof, which is still pending the staged image. The build slot is now producing full-feature shipping/prototype/diagnostic static images with matched role sets, plus the current default image for D243 delta against fetched origin/dev06be8b000. No runtime fix/default change. Diagnostic-only numeric frame bins/byte totals/reset have a functional check; short reader CPU capture plus existing native stages/scheduler/kernel-wait traces will test the batching hypothesis. Shipping session.rs drains up to16 immediate reads into16KiB; optional user_host.rs permits4 reads and only4KiB for promoted replies. That source difference is a hypothesis to measure, not evidence that it explains the historical6.5ms tail gap. [memory-unit-gate.log](https://git.kayg.org/attachments/d30a449d-6116-43d9-87e4-94e53fa2abdd) [reader-profile-functional.log](https://git.kayg.org/attachments/854384ec-7299-4e22-92bf-491ac11d8237)
kayg commented 2026-10-17 04:10:23 +00:00
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Priority item3 actual cgroup gate PASS on source3153bc730ec26f70f481caa1ff56a9d588533694, full-role opt-in static image SHA2568ce7dfccb23e1bfd881292d4ef15ce3eb85d2c0ddc71cbf96b0c659f536989fd. Exact unskipped ppu_reliability_memory Rust regression1/1 on named perfVM,4vCPU/Linux6.12.111, flock held/owner file, CPUWeight10000 in its private scope. Load0.08/0.18/0.60 before the case.

32MiB OSC: working set51,179,520B; live cap67,956,736B; peak52,953,088B; max/oom/oom_kill/oom_group_kill all0. All20 sessions accepted input after the string. This is the short memory case, not a7200s soak (the shared environment record retains the unused default seconds field). The older unbounded-input regression is green with current caps; no duplicate runtime repair was needed.

Controller ppu-d296-mem-3153 (invocation968f6f4f5a4c49898cfac6b055820185) completed successfully; MainPID0/emptyControlGroup/inactive; no active memory fixture scope. Temporary stale socket directory entries are evidence-fixture residue, not live sessions; they remain only under this run prefix until final cleanup. Diagnostic/control static images still building in the same sole build slot. Default unchanged.

memory-raw.tar.gz
memory-progress.txt
memory-cleanup.txt

Priority item3 actual cgroup gate PASS on source3153bc730ec26f70f481caa1ff56a9d588533694, full-role opt-in static image SHA2568ce7dfccb23e1bfd881292d4ef15ce3eb85d2c0ddc71cbf96b0c659f536989fd. Exact unskipped ppu_reliability_memory Rust regression1/1 on named perfVM,4vCPU/Linux6.12.111, flock held/owner file, CPUWeight10000 in its private scope. Load0.08/0.18/0.60 before the case. 32MiB OSC: working set51,179,520B; live cap67,956,736B; peak52,953,088B; max/oom/oom_kill/oom_group_kill all0. All20 sessions accepted input after the string. This is the short memory case, not a7200s soak (the shared environment record retains the unused default seconds field). The older unbounded-input regression is green with current caps; no duplicate runtime repair was needed. Controller ppu-d296-mem-3153 (invocation968f6f4f5a4c49898cfac6b055820185) completed successfully; MainPID0/emptyControlGroup/inactive; no active memory fixture scope. Temporary stale socket directory entries are evidence-fixture residue, not live sessions; they remain only under this run prefix until final cleanup. Diagnostic/control static images still building in the same sole build slot. Default unchanged. [memory-raw.tar.gz](https://git.kayg.org/attachments/c00d4cfe-5255-4832-b7bd-e60e1e928a1e) [memory-progress.txt](https://git.kayg.org/attachments/425d7304-87dc-44cd-9a46-ac43120f6848) [memory-cleanup.txt](https://git.kayg.org/attachments/bd4d2aea-5f65-42d6-a786-c71c70a9451b)
kayg commented 2026-10-17 04:35:45 +00:00
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D296 before images are frozen at source3153bc730 / shipping06be8b000, full role sets on both. New deterministic queueing regression is red: one promoted read consumes4096 of5120 already-ready bytes, requiring another reactor turn/socket delivery. Test-only worktree change remains uncommitted; no runtime fix selected yet. The source difference is user_host.rs INTERACTIVE_READ_BYTES=4096/four reads versus session.rs CHUNK=16384/up to16 reads. This proves a forced split, not its share of the historical6.5ms p99 difference. Scheduled full diagnostics acquired the perf lock at04:33:17UTC; dt is collecting, followed serially by pt and one unchanged900s600-warm before pair. Controller2634025 / ppu-d296-diag-3153 / invocation5655c7ffb8fa4f7facdb0af7bfb5c748; state/root under /root/infraternal-bench/p296.

Fresh D243 x86 default comparison: current21,300,080B vs shipping06be21,300,016B, delta+64B (within16KiB). Total optional process-per-user image21,383,856B: +83,776B over branch default (+83,840B vs dev); this is the full existing feature cost, not the earlier incremental+4,384B versus an already-featured old image. Diagnostic21,390,544B is separate and not an admission image. No ceiling/default change; the eventual default-enabled feature needs its full cost considered at adoption. Both default and optional totals are disclosed rather than conflated.

promoted-read-red.log
size-images.json

D296 before images are frozen at source3153bc730 / shipping06be8b000, full role sets on both. New deterministic queueing regression is red: one promoted read consumes4096 of5120 already-ready bytes, requiring another reactor turn/socket delivery. Test-only worktree change remains uncommitted; no runtime fix selected yet. The source difference is user_host.rs INTERACTIVE_READ_BYTES=4096/four reads versus session.rs CHUNK=16384/up to16 reads. This proves a forced split, not its share of the historical6.5ms p99 difference. Scheduled full diagnostics acquired the perf lock at04:33:17UTC; dt is collecting, followed serially by pt and one unchanged900s600-warm before pair. Controller2634025 / ppu-d296-diag-3153 / invocation5655c7ffb8fa4f7facdb0af7bfb5c748; state/root under /root/infraternal-bench/p296. Fresh D243 x86 default comparison: current21,300,080B vs shipping06be21,300,016B, delta+64B (within16KiB). Total optional process-per-user image21,383,856B: +83,776B over branch default (+83,840B vs dev); this is the full existing feature cost, not the earlier incremental+4,384B versus an already-featured old image. Diagnostic21,390,544B is separate and not an admission image. No ceiling/default change; the eventual default-enabled feature needs its full cost considered at adoption. Both default and optional totals are disclosed rather than conflated. [promoted-read-red.log](https://git.kayg.org/attachments/463a5299-a3d4-4345-af4e-1bdfec2e2cb0) [size-images.json](https://git.kayg.org/attachments/93e18dbe-0d8d-4b06-99eb-db0df68a3bd1)
kayg commented 2026-10-17 04:59:50 +00:00
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Production dependency boundary recorded and pushed at c549cecd7 (research/process-per-user/README.md, Mesh SSH prerequisites). #205 supplies the optional bounded PTY runtime after an authorized login, session IDs/local socket lifetime and child reaping. It does not yet supply production login authority/spawner integration, target-user files, person-bound SSH reattachment/access-removal retirement, or one current Login access evaluator across all shell/exec/file entries. #172 supplies the real login lifetime prerequisite on its own branch; #221 transport interfaces still need these production adapters. Rootful peer checking also needs expected UID bound to authenticated person/account metadata, never arbitrary UID acceptance. D128 whole-host restart handoff remains separate. No default change, SSH enablement, merge or deployment. Documentation diff check passes; functional/runtime gates reported separately.

Production dependency boundary recorded and pushed at c549cecd7 (research/process-per-user/README.md, Mesh SSH prerequisites). #205 supplies the optional bounded PTY runtime after an authorized login, session IDs/local socket lifetime and child reaping. It does not yet supply production login authority/spawner integration, target-user files, person-bound SSH reattachment/access-removal retirement, or one current Login access evaluator across all shell/exec/file entries. #172 supplies the real login lifetime prerequisite on its own branch; #221 transport interfaces still need these production adapters. Rootful peer checking also needs expected UID bound to authenticated person/account metadata, never arbitrary UID acceptance. D128 whole-host restart handoff remains separate. No default change, SSH enablement, merge or deployment. Documentation diff check passes; functional/runtime gates reported separately.
kayg commented 2026-10-17 05:00:21 +00:00
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Observer integrity finding and startup correction: e267a9e52 is pushed. The first native shipping before-cell d0 stopped at ConnectionRefusedError during session startup, before any timed cohort; no p99 is counted. Startup previously treated socket-path publication as listener readiness. Two new lifecycle checks are red on the old adapter, green with a bounded retry while the exact child remains alive; all105 observer checks pass. The specific d0 cause cannot be proven from its old receipt, which lacked a child status at refusal. Retry d0b/p0b uses the same frozen native images and original900s/600s seed270205 workload with the readiness fix on both sides. Controller ppu-d296-before-b / invocationfa2f4eda33bb4715b820747d47edbe3f.

Diagnostic dt/pt completed with1000/1000 census, no trace overruns. Rejecting their opaque CPU-profiler function timings: some self times are negative and cancel, so they are not attribution evidence. Native manual stages still locate pt's55.57ms diagnostic probe:0.747ms send-to-host-socket completion, then54.732–54.742ms socket-to-reader. This includes profiling overhead and is not admission. A separate lower-overhead explicit-span capture is queued AFTER the native pair, with no opaque CPU profiler; same-task dispatch clock checks pass and socket awaits/other tasks are excluded. No runtime change is justified yet; the deterministic4KiB split test remains a saved candidate, not a claimed fix.

baseline-ready-red.log
baseline-ready-green.log
before-pair-failure.txt
spans-check.log

Observer integrity finding and startup correction: e267a9e52 is pushed. The first native shipping before-cell d0 stopped at ConnectionRefusedError during session startup, before any timed cohort; no p99 is counted. Startup previously treated socket-path publication as listener readiness. Two new lifecycle checks are red on the old adapter, green with a bounded retry while the exact child remains alive; all105 observer checks pass. The specific d0 cause cannot be proven from its old receipt, which lacked a child status at refusal. Retry d0b/p0b uses the same frozen native images and original900s/600s seed270205 workload with the readiness fix on both sides. Controller ppu-d296-before-b / invocationfa2f4eda33bb4715b820747d47edbe3f. Diagnostic dt/pt completed with1000/1000 census, no trace overruns. Rejecting their opaque CPU-profiler function timings: some self times are negative and cancel, so they are not attribution evidence. Native manual stages still locate pt's55.57ms diagnostic probe:0.747ms send-to-host-socket completion, then54.732–54.742ms socket-to-reader. This includes profiling overhead and is not admission. A separate lower-overhead explicit-span capture is queued AFTER the native pair, with no opaque CPU profiler; same-task dispatch clock checks pass and socket awaits/other tasks are excluded. No runtime change is justified yet; the deterministic4KiB split test remains a saved candidate, not a claimed fix. [baseline-ready-red.log](https://git.kayg.org/attachments/36c027c1-b871-4a28-a879-788714c57a54) [baseline-ready-green.log](https://git.kayg.org/attachments/60bf5bd2-a431-4120-9db6-09db35965a16) [before-pair-failure.txt](https://git.kayg.org/attachments/6558f369-ed9a-4e67-b22b-766c05e9d7d1) [spans-check.log](https://git.kayg.org/attachments/5d6d1c63-8873-4c27-9bae-3a1da3185486)
kayg commented 2026-10-17 05:11:30 +00:00
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Memory coverage refinement pushed at5e87c3c07: the previously green real cgroup case confirmed20/20 inputs AFTER the32MiB OSC terminated. It did not prove progress while the string remained open. New ordering regression is red on that sequential fixture and green now (106 observer tests). The source emits/drains all32MiB, waits for explicit stdin release without terminating its OSC, requires19/19 sibling echoes, then terminates/reset and checks20/20 again. No sleep-based race or native budget change. A separately staged memory-open.py avoids changing any in-flight soak driver hash. Actual capped run is queued after all existing captures, ppu-d296-memory-open-5e87 / invocationf4c5e9267a7140f1b3dabd66690b7ebf; native image remains3153bc730 SHA8ce7dfccb23e1bfd881292d4ef15ce3eb85d2c0ddc71cbf96b0c659f536989fd. The new real result is pending, not inferred from the mock ordering check.

memory-open-red.log
memory-open-green.log

Memory coverage refinement pushed at5e87c3c07: the previously green real cgroup case confirmed20/20 inputs AFTER the32MiB OSC terminated. It did not prove progress while the string remained open. New ordering regression is red on that sequential fixture and green now (106 observer tests). The source emits/drains all32MiB, waits for explicit stdin release without terminating its OSC, requires19/19 sibling echoes, then terminates/reset and checks20/20 again. No sleep-based race or native budget change. A separately staged memory-open.py avoids changing any in-flight soak driver hash. Actual capped run is queued after all existing captures, ppu-d296-memory-open-5e87 / invocationf4c5e9267a7140f1b3dabd66690b7ebf; native image remains3153bc730 SHA8ce7dfccb23e1bfd881292d4ef15ce3eb85d2c0ddc71cbf96b0c659f536989fd. The new real result is pending, not inferred from the mock ordering check. [memory-open-red.log](https://git.kayg.org/attachments/1f1f177f-1bbb-4845-9370-a2cbdd31a85f) [memory-open-green.log](https://git.kayg.org/attachments/31d91f8e-17c6-48e7-a2b7-1e065ecbfbf7)
kayg commented 2026-10-17 05:14:14 +00:00
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First uninstrumented shipping before-control d0b complete: 1000/1000 final input census;900 active seconds,600 warmup, seed270205.31 settled cohorts/3100 original echoes; p50 9.589893ms, p99 20.501005ms, peak batch p99 23.480868ms;0 observed-contention exclusions. Legacy5ms outcome remains false. Exact shipping image06be8b000 SHA236e8496260f6de12d93ecd0e0ce1f920716e1029b6a3db0ecdf1bccfe055606, frozen full-default role set. Matched prototype p0b has started; this one control is not the required three-pair D296 admission. No native read-quantum change selected.

comparison-report.json

First uninstrumented shipping before-control d0b complete: 1000/1000 final input census;900 active seconds,600 warmup, seed270205.31 settled cohorts/3100 original echoes; p50 9.589893ms, p99 20.501005ms, peak batch p99 23.480868ms;0 observed-contention exclusions. Legacy5ms outcome remains false. Exact shipping image06be8b000 SHA236e8496260f6de12d93ecd0e0ce1f920716e1029b6a3db0ecdf1bccfe055606, frozen full-default role set. Matched prototype p0b has started; this one control is not the required three-pair D296 admission. No native read-quantum change selected. [comparison-report.json](https://git.kayg.org/attachments/88541ad0-6dc7-4ba1-8f72-55c64c25932a)
kayg commented 2026-10-17 05:19:48 +00:00
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Tail attribution finding: observer work is unequal, not yet a proven6.5ms causal share. scripts/bench/ppu_baseline.py::Host.ready sets host.pid to the first independent shim (idle session0); scripts/bench/ppu_soak.py::soak passes host.pid into Wakeups, whose Thread runs Python drain in the reader interpreter. Shipping d0b counter stays1→1 across900s; diagnostic dt2→2 across180s, versus shared-host pt296→6857. The shared counter watches every session. Existing stage stamps put pt's55.57ms diagnostic slow probe after socket write (54.73ms there), with reader running/runnable time and counter-shared futex activity. Opaque profiler function times remain rejected.

Queued controlled ablation ct/cp/ct2 keeps the frozen native image, seed, shell commands and180s/120s diagnostic cadence: original thread / isolated process counter / original thread. Counting and inherited-socket cleanup checks pass; no workload or threshold change. The native900s before-pair remains on the original observer. No read-quantum change justified by these data; source image unchanged.

counter-asymmetry.json
counter-check.log

Tail attribution finding: observer work is unequal, not yet a proven6.5ms causal share. scripts/bench/ppu_baseline.py::Host.ready sets host.pid to the first independent shim (idle session0); scripts/bench/ppu_soak.py::soak passes host.pid into Wakeups, whose Thread runs Python drain in the reader interpreter. Shipping d0b counter stays1→1 across900s; diagnostic dt2→2 across180s, versus shared-host pt296→6857. The shared counter watches every session. Existing stage stamps put pt's55.57ms diagnostic slow probe after socket write (54.73ms there), with reader running/runnable time and counter-shared futex activity. Opaque profiler function times remain rejected. Queued controlled ablation ct/cp/ct2 keeps the frozen native image, seed, shell commands and180s/120s diagnostic cadence: original thread / isolated process counter / original thread. Counting and inherited-socket cleanup checks pass; no workload or threshold change. The native900s before-pair remains on the original observer. No read-quantum change justified by these data; source image unchanged. [counter-asymmetry.json](https://git.kayg.org/attachments/a41d779a-31f7-402b-8d54-fdff5d00727a) [counter-check.log](https://git.kayg.org/attachments/94b42fa2-c104-4f23-b3a1-b8894f2bedf7)
kayg commented 2026-10-17 05:37:17 +00:00
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First matched native pair complete, original observer unchanged: shipping d0b p50/p99 9.589893/20.501005ms; prototype p0b 8.253748/18.489931ms.3100 eligible echoes each,31 settled cohorts each,0 exclusions,1000/1000 final census each.900 active seconds/600 warmup, seed270205. Descriptive difference−2.011074ms; THREE-pair admission is not decided. The historical+6.604056ms gap is not reproduced by this one shorter matched pair; no native fix or causal share is inferred. Remaining balanced pairs p1c/d1c and d2c/p2c are queued on identical images and driver, after the diagnostic/isolated-counter controls and stronger memory check.

Rebased again onto current origin/dev2a5302cc7 and force-with-lease pushed; head40c6c5115. Native input bridge:06be shipping equals current dev and3153 prototype equals current head for crates/Cargo/lock/toolchain/.cargo/native build scripts. Current dev's intervening files are UI/docs only. New reporter35d1a4994 and recipe40c6c5115 are pushed;111 observer checks pass. It requires three disjoint complete pairs, recomputes scope exclusions from raw receipts and preserves legacy5ms outcomes, avoiding a one-pair green label or averaged p99s.

Iteration gate stopped only at daemon::gone_tests::a_vanished_session_gets_a_final_close_and_the_channel_stays_up: Unix socket path109B under this job's TMPDIR, over the107B usable limit. This is not a load exemption. Re-running with a newly owned two-character scratch directory (same fixture path107B); no repository test altered. fmt/native fmt/compile-out/clippy/cargo-deny passed. Current rerun and final fast are pending.

before-pair-summary.txt
native-input-bridge.json
d296-report-green.log
iterate.log

First matched native pair complete, original observer unchanged: shipping d0b p50/p99 9.589893/20.501005ms; prototype p0b 8.253748/18.489931ms.3100 eligible echoes each,31 settled cohorts each,0 exclusions,1000/1000 final census each.900 active seconds/600 warmup, seed270205. Descriptive difference−2.011074ms; THREE-pair admission is not decided. The historical+6.604056ms gap is not reproduced by this one shorter matched pair; no native fix or causal share is inferred. Remaining balanced pairs p1c/d1c and d2c/p2c are queued on identical images and driver, after the diagnostic/isolated-counter controls and stronger memory check. Rebased again onto current origin/dev2a5302cc7 and force-with-lease pushed; head40c6c5115. Native input bridge:06be shipping equals current dev and3153 prototype equals current head for crates/Cargo/lock/toolchain/.cargo/native build scripts. Current dev's intervening files are UI/docs only. New reporter35d1a4994 and recipe40c6c5115 are pushed;111 observer checks pass. It requires three disjoint complete pairs, recomputes scope exclusions from raw receipts and preserves legacy5ms outcomes, avoiding a one-pair green label or averaged p99s. Iteration gate stopped only at daemon::gone_tests::a_vanished_session_gets_a_final_close_and_the_channel_stays_up: Unix socket path109B under this job's TMPDIR, over the107B usable limit. This is not a load exemption. Re-running with a newly owned two-character scratch directory (same fixture path107B); no repository test altered. fmt/native fmt/compile-out/clippy/cargo-deny passed. Current rerun and final fast are pending. [before-pair-summary.txt](https://git.kayg.org/attachments/b3f6eb04-f1b0-4e58-b877-dfab187ee062) [native-input-bridge.json](https://git.kayg.org/attachments/c50d6b33-55fe-4962-9e0f-e733ab15b413) [d296-report-green.log](https://git.kayg.org/attachments/01a2c5cc-741c-481e-af24-253ea5a3fe83) [iterate.log](https://git.kayg.org/attachments/3730b360-cfa1-4060-91fd-a5a643718a59)
kayg commented 2026-10-17 05:57:50 +00:00
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Hardening/evidence updates pushed through7c30edc7cad96a78873ccfbfd5e8931792d99b49.

Actual fenced memory gate is GREEN on the perf VM: private working set51,261,440B, cap68,038,656B, peak52,961,280B; max/oom/oom_kill/oom_group_kill all0. Full32MiB payload is followed by a raw-output fence;19/19 siblings echo while the control string is still open and before explicit stdin release, then20/20 sessions echo after termination. Native image3153bc730 SHA8ce7dfccb23e1bfd881292d4ef15ce3eb85d2c0ddc71cbf96b0c659f536989fd. Fenced driver7c30edc7 SHA04bf922c594e1060513be3969a9bf9c27010d17fd6991411a6be4ceb33846ddd. Actual Rust case1/1; controller inactive/MainPID0 and no active memory scopes. This is whole-cgroup isolation, not a new per-session PSS estimate.

Observer lifecycle bug confirmed with red checks, fixed b8f08e2f3: cancelling connect during Hello or input-state setup retained the unpublished viewer and receive task. Close/join at that ownership boundary. The diagnostic pending-task warning occurred AFTER its180s capture;700 settled probes,1000-session census and0 overruns remain complete. Fenced-source refinements7c30edc7 also prevent shell framing from acting as a byte-count oracle and exclude the held source from periodic sampler input. Both refinement checks red first;113 observer checks green. Frozen admission drivers remain untouched.

Low-overhead diagnostic attribution (700 settled probes each,0 exclusions): shared-host maximum20.047386ms. Its input queue0.023758ms, parse0.003415ms, frame build0.000137ms, socket syscall0.009248ms. Of11.101387ms PTY-write-to-read, the shell is runnable10.77ms/running-upper0.326344ms; host runnable5.957ms overlaps it. Post-socket reader bound5.901833–5.911081ms; reader running-upper5.846081ms. Host wait stacks include n_tty_read/flush_work and epoll;6 reader user-page-fault events, no observed reclaim in the traced roles, no dump overlap. This locates this diagnostic tail in scheduling/reader work, not a historical population share; stages/roles overlap and cannot be summed or subtracted from admission p99. The old opaque profiler remains rejected.

Controlled observer ablation REJECTS isolation as a fix:

Observer p50 ms p99 ms Retained/excluded
original thread ct 7.420819 11.662227 700/0
isolated process cp 8.978836 17.497588 700/0
original thread repeat ct2 7.327751 10.175467 700/0
Same native image,180s/120 warmup, seed270205, original shell commands. Unequal counter event counts are real, but this intervention regressed against both controls; no native or observer change is selected from it. D296 admission remains the unchanged900s/600s driver; first pair prototype18.489931ms vs shipping20.501005ms, two further pairs queued/running. Three-pair admission remains pending.

Second iterate stopped at the unchanged server input-credit setup Ack assertion (not load-waived). Focused same-binary repeat passes; current-head final fast runs through build-slot with RUST_TEST_THREADS=1, assertions/timeouts unchanged. Final gate/size result pending.

pl-span-summary.json
memory-open-result.json
memory-open.log
memory-open-cleanup.txt
connect-cancel-red.log
connect-cancel-green.log
memory-fence-red.log
memory-fence-green.log

counter-ablation-result.json

dl-pl-raw.tar.gz

Hardening/evidence updates pushed through7c30edc7cad96a78873ccfbfd5e8931792d99b49. Actual fenced memory gate is GREEN on the perf VM: private working set51,261,440B, cap68,038,656B, peak52,961,280B; max/oom/oom_kill/oom_group_kill all0. Full32MiB payload is followed by a raw-output fence;19/19 siblings echo while the control string is still open and before explicit stdin release, then20/20 sessions echo after termination. Native image3153bc730 SHA8ce7dfccb23e1bfd881292d4ef15ce3eb85d2c0ddc71cbf96b0c659f536989fd. Fenced driver7c30edc7 SHA04bf922c594e1060513be3969a9bf9c27010d17fd6991411a6be4ceb33846ddd. Actual Rust case1/1; controller inactive/MainPID0 and no active memory scopes. This is whole-cgroup isolation, not a new per-session PSS estimate. Observer lifecycle bug confirmed with red checks, fixed b8f08e2f3: cancelling connect during Hello or input-state setup retained the unpublished viewer and receive task. Close/join at that ownership boundary. The diagnostic pending-task warning occurred AFTER its180s capture;700 settled probes,1000-session census and0 overruns remain complete. Fenced-source refinements7c30edc7 also prevent shell framing from acting as a byte-count oracle and exclude the held source from periodic sampler input. Both refinement checks red first;113 observer checks green. Frozen admission drivers remain untouched. Low-overhead diagnostic attribution (700 settled probes each,0 exclusions): shared-host maximum20.047386ms. Its input queue0.023758ms, parse0.003415ms, frame build0.000137ms, socket syscall0.009248ms. Of11.101387ms PTY-write-to-read, the shell is runnable10.77ms/running-upper0.326344ms; host runnable5.957ms overlaps it. Post-socket reader bound5.901833–5.911081ms; reader running-upper5.846081ms. Host wait stacks include n_tty_read/flush_work and epoll;6 reader user-page-fault events, no observed reclaim in the traced roles, no dump overlap. This locates this diagnostic tail in scheduling/reader work, not a historical population share; stages/roles overlap and cannot be summed or subtracted from admission p99. The old opaque profiler remains rejected. Controlled observer ablation REJECTS isolation as a fix: | Observer | p50 ms | p99 ms | Retained/excluded | |---|---:|---:|---| | original thread ct |7.420819|11.662227|700/0| | isolated process cp |8.978836|17.497588|700/0| | original thread repeat ct2 |7.327751|10.175467|700/0| Same native image,180s/120 warmup, seed270205, original shell commands. Unequal counter event counts are real, but this intervention regressed against both controls; no native or observer change is selected from it. D296 admission remains the unchanged900s/600s driver; first pair prototype18.489931ms vs shipping20.501005ms, two further pairs queued/running. Three-pair admission remains pending. Second iterate stopped at the unchanged server input-credit setup Ack assertion (not load-waived). Focused same-binary repeat passes; current-head final fast runs through build-slot with RUST_TEST_THREADS=1, assertions/timeouts unchanged. Final gate/size result pending. [pl-span-summary.json](https://git.kayg.org/attachments/615c2022-b45b-48d1-964e-c0a9e50c0ae5) [memory-open-result.json](https://git.kayg.org/attachments/1e508460-d68d-40b6-9cdf-fa93c9edcd23) [memory-open.log](https://git.kayg.org/attachments/067ae261-7992-4caa-86be-bbd1f1f9fe98) [memory-open-cleanup.txt](https://git.kayg.org/attachments/b868e8fa-73f2-4a57-a8ce-c1f0ec02c231) [connect-cancel-red.log](https://git.kayg.org/attachments/b87d519a-00b9-40b9-823a-98a4b64de211) [connect-cancel-green.log](https://git.kayg.org/attachments/a8a2abfe-1463-4e63-979c-d1c6a0651ec0) [memory-fence-red.log](https://git.kayg.org/attachments/6d06d35c-7917-4928-b308-fd954be70225) [memory-fence-green.log](https://git.kayg.org/attachments/cc5bb06c-b277-41da-86be-244c2619b62e) [counter-ablation-result.json](https://git.kayg.org/attachments/1820df8e-f230-4baf-9bf9-2e3aaa51897c) [dl-pl-raw.tar.gz](https://git.kayg.org/attachments/0f57660b-bf8f-4f25-927b-8b9ff3ca5cfb)
kayg commented 2026-10-17 06:16:55 +00:00
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Second prototype cell p1c complete: p50/p99 9.648149/26.338421ms, peak batch p99 34.394884ms,29 retained cohorts/2900 echoes,1000/1000 final census. Two whole cohorts at750/760s conservatively excluded for foreign-scope-transition:session-c10524.scope. Later load8.50/high-latency cohorts were retained: lock ownership remained ours, and the audit found no foreign-scope transition/CPU change there. A high load average alone is not a reason to discard samples. Shipping d1c is in its measured window; d2c/p2c follow. Three-pair D296 echo result pending; no native/observer change or threshold waiver.

Scope clarification: the reporter decides ECHO COMPARISON ONLY and preserves full raw legacy outcomes. In first pair d0b/p0b, raw PSS growth is33788/8KiB (not diagnosed as a leak); prototype legacy end/start echo medians13.415491/10.019156ms also exceed its old1.25 steadiness ratio. Both raw outcomes remain false. The new relative target is not a claim that the old whole-soak suite,7200s aging, production login integration or D128 now passes. Full current-head fast has passed Rust functional rows and is compiling static targets; sizes/TypeScript result pending.

comparison-report.json
p1-load-spike.txt

Second prototype cell p1c complete: p50/p99 9.648149/26.338421ms, peak batch p99 34.394884ms,29 retained cohorts/2900 echoes,1000/1000 final census. Two whole cohorts at750/760s conservatively excluded for foreign-scope-transition:session-c10524.scope. Later load8.50/high-latency cohorts were retained: lock ownership remained ours, and the audit found no foreign-scope transition/CPU change there. A high load average alone is not a reason to discard samples. Shipping d1c is in its measured window; d2c/p2c follow. Three-pair D296 echo result pending; no native/observer change or threshold waiver. Scope clarification: the reporter decides ECHO COMPARISON ONLY and preserves full raw legacy outcomes. In first pair d0b/p0b, raw PSS growth is33788/8KiB (not diagnosed as a leak); prototype legacy end/start echo medians13.415491/10.019156ms also exceed its old1.25 steadiness ratio. Both raw outcomes remain false. The new relative target is not a claim that the old whole-soak suite,7200s aging, production login integration or D128 now passes. Full current-head fast has passed Rust functional rows and is compiling static targets; sizes/TypeScript result pending. [comparison-report.json](https://git.kayg.org/attachments/f4f13a00-ce54-49f4-a761-c1f569c27650) [p1-load-spike.txt](https://git.kayg.org/attachments/53ccc486-98a7-4631-806e-0ebccab4aef9)
kayg commented 2026-10-17 06:22:13 +00:00
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Second shipping cell d1c complete: p50/p99 9.354849/46.813752ms, peak batch p99 74.018835ms;31 retained cohorts/3100 original echoes,0 exclusions,1000/1000 census. Its matched prototype p1c p99 is26.338421ms (2900 echoes,2 conservative scope-transition exclusions). Same900s/600s/seed270205, unchanged images and driver. These are retained observed tails, not a reason to relax a threshold or remove high-load cohorts. Third d2c/p2c pair remains; pooled THREE-pair result not decided.

Current-head fast Rust functional rows pass, including the previously failing input-credit setup test. x86 static21,300,080B vs dev21,300,016B: +64B, within the task's16KiB delta allowance but still an unchanged absolute-cap failure. ARM build and complete final gate/TypeScript remain pending; no ceiling was edited.

comparison-report.json

Second shipping cell d1c complete: p50/p99 9.354849/46.813752ms, peak batch p99 74.018835ms;31 retained cohorts/3100 original echoes,0 exclusions,1000/1000 census. Its matched prototype p1c p99 is26.338421ms (2900 echoes,2 conservative scope-transition exclusions). Same900s/600s/seed270205, unchanged images and driver. These are retained observed tails, not a reason to relax a threshold or remove high-load cohorts. Third d2c/p2c pair remains; pooled THREE-pair result not decided. Current-head fast Rust functional rows pass, including the previously failing input-credit setup test. x86 static21,300,080B vs dev21,300,016B: +64B, within the task's16KiB delta allowance but still an unchanged absolute-cap failure. ARM build and complete final gate/TypeScript remain pending; no ceiling was edited. [comparison-report.json](https://git.kayg.org/attachments/045e88eb-35ef-4b9c-97e7-5aa383125068)
kayg commented 2026-10-17 06:54:26 +00:00
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Duration correction before any admission claim: the six900s/600s cells are SHORT comparisons, not certification of the historical7200-active-second workload behind24.53/31.13ms. Shipping short-run p99 spans14.98–46.81ms; a short pooled result could reflect window variance rather than removal of the reported tail. Keeping those receipts and their full raw outcomes, but not treating them as the final unchanged-workload proof.

Queued original full-duration comparison:7200 active seconds,600 warmup,10s cadence,1000 sessions, seed270205, original shell commands and frozen3153/06be native images+driver. Three independent runs per role, balanced shipping/prototype order; cells d0f/p0f, p1f/d1f, d2f/p2f. Existing coordinator holds the perf flock for at most1740s, freezes only its owned cgroup between segments, writes the owner file, waits up to3600s, and preserves exact pause/segment receipts. Controller ppu-d296-long-3153 / invocationb0de7df0cd134a8cb2dac2439361ecf3 waits for the current short pair to retire, so fixtures never overlap. State /root/infraternal-bench/p296/controller-long.json. Expect12 active measurement hours plus lock waits/setup; no benchmark runs on the build host.

No native fix is guessed from the short data. Final D296 gate compares pooled original echoes against matched shipping, preserving all exclusions and legacy outcomes;5ms remains an aim, not a merge gate. Current-head fast7c30edc7 passes non-size Rust rows and independent TypeScript; only x86 absolute cap+64B is red, ARM matches19,500,376B. Independent ARM dev size-control build is queued through build-slot. No merge, deployment, default switch or change to the other login branch.

Duration correction before any admission claim: the six900s/600s cells are SHORT comparisons, not certification of the historical7200-active-second workload behind24.53/31.13ms. Shipping short-run p99 spans14.98–46.81ms; a short pooled result could reflect window variance rather than removal of the reported tail. Keeping those receipts and their full raw outcomes, but not treating them as the final unchanged-workload proof. Queued original full-duration comparison:7200 active seconds,600 warmup,10s cadence,1000 sessions, seed270205, original shell commands and frozen3153/06be native images+driver. Three independent runs per role, balanced shipping/prototype order; cells d0f/p0f, p1f/d1f, d2f/p2f. Existing coordinator holds the perf flock for at most1740s, freezes only its owned cgroup between segments, writes the owner file, waits up to3600s, and preserves exact pause/segment receipts. Controller ppu-d296-long-3153 / invocationb0de7df0cd134a8cb2dac2439361ecf3 waits for the current short pair to retire, so fixtures never overlap. State /root/infraternal-bench/p296/controller-long.json. Expect12 active measurement hours plus lock waits/setup; no benchmark runs on the build host. No native fix is guessed from the short data. Final D296 gate compares pooled original echoes against matched shipping, preserving all exclusions and legacy outcomes;5ms remains an aim, not a merge gate. Current-head fast7c30edc7 passes non-size Rust rows and independent TypeScript; only x86 absolute cap+64B is red, ARM matches19,500,376B. Independent ARM dev size-control build is queued through build-slot. No merge, deployment, default switch or change to the other login branch.
kayg commented 2026-10-17 07:32:10 +00:00
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Handover/finish for this round (took over the interrupted job). Head 7c30edc7ca, equal to origin/process-per-user, rebased on origin/dev 2a5302cc7 (0 dev commits missing). No new code commit this round; results stay on this issue, as the research README says.

Brief status

  1. Rebase on dev: done (rebase, not merge; force-with-lease only for the rebase).
  2. PPU-R1: done (69eee9f6c after replay; the review regression is included; real-host suite 4/4).
  3. Memory P0: done. The actual cgroup gate is green: 32 MiB open OSC, peak 52,961,280 B under a cap of 68,038,656 B, 0 oom/oom_kill, 19/19 siblings echo while the string is open, 20/20 after it ends. ppu_reliability_memory 1/1.
  4. Echo gap (D296): the three-pair round is complete and passes on the pooled rule. The numbers are below.
  5. Mesh SSH dependency list: posted on #221 (see the cross-reference there).

D296 round: perf VM infraternal-perf-test, 4 vCPU, Linux 6.12.111, flock held per cell, 1000 sessions, 900 s measured after 600 s warmup, 10 s cadence, seed 270205, balanced order, frozen images (shipping 06be8b000 SHA 236e8496…, prototype 3153bc730 SHA 8ce7dfcc…), same driver SHA 7a1e4620…

Pair Shipping p50 / p99 ms Prototype p50 / p99 ms Echoes (ship / proto) Excluded cohorts
0 (d0b / p0b) 9.590 / 20.501 8.254 / 18.490 3100 / 3100 0 / 0
1 (d1c / p1c) 9.355 / 46.814 9.648 / 26.338 3100 / 2900 0 / 2 (foreign scope transition)
2 (d2c / p2c) 8.564 / 14.982 7.811 / 24.560 3100 / 3100 0 / 0
Pooled 9.185 / 34.318 8.368 / 23.882 9300 / 9100

The reporter (scripts/bench/ppu_d296_report.py --pair d0b:p0b --pair d1c:p1c --pair d2c:p2c) gives complete: true, d296_pass: true and a pooled difference of −10.436 ms.

Caveats, stated plainly:

  • The prototype wins the pooled rule and pairs 0 and 1. It loses pair 2 by 9.58 ms (24.56 vs 14.98). Shipping's pooled p99 is driven by d1c's tail, where its peak batch p99 was 74 ms. Run-to-run variance (shipping 14.98–46.81 ms) is larger than the historical 6.6 ms gap, so this round shows no regression. It does not prove that a fix exists.
  • These are 900 s cells. They do not reproduce the historical 7200 s workload behind 24.53/31.13 ms. The 6×7200 s long round (ppu-d296-long-3153) was stopped by the orchestrator because it was a detached controller. Cell d0f is incomplete (signal 15) and is not counted. Its partial receipts remain under /root/infraternal-bench/p296/d0f. A long round needs about 13 h of perf VM time and is an orchestrator call.
  • Root cause of the historical tail: the low-overhead span capture puts the slow probes in scheduling (shell runnable 10.77 ms of an 11.10 ms PTY write→read on 4 vCPU under burst load) and in reader run time. The host parse/frame/socket stages are under 0.04 ms. Isolating the observer made things worse (ablation table above), so it was rejected. The 4 KiB promoted-read split (four reads of 4 KiB in user_host against 16 reads of 16 KiB in shipping) is real but has no measured share of the tail. No runtime change was made on a guess.
  • The legacy outcomes stay false in the raw receipts. Prototype PSS growth is 8 KiB per cell; shipping grows 32.6–43.9 MiB. The prototype's last-to-first echo p99 ratio exceeds the old 1.25 steadiness limit in pairs 0 and 1.

Sizes (D243, against origin/dev, which has the same native inputs as 06be8b000)

Target Head Dev Delta
x86_64 musl default 21,300,080 21,300,016 +64 B
aarch64 musl default 19,500,376 19,500,376 0
x86_64 with the optional feature 21,383,856 — +83,840 B (full feature cost, not the default)

The +64 B is within the 16 KiB delta. It still fails the absolute x86 cap, which equals dev's size exactly. No cap was changed.

scripts/verify fast at 7c30edc7c (verbatim tail)

PT_INTERP: absent; size: 21300080 bytes; cap: 21300016 bytes; delta: +64 bytes
binary exceeds the 21300016-byte size budget: 21300080 bytes
(static builds: 1906s)

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+
scripts/verify fast exit=1
Independent TypeScript exit=0   (37 pass, 0 fail)

The perf VM is clean: no controllers or scopes. The lock is free, and the stale owner file from the stopped d0f was removed under the lock. Default unchanged, no merge, no deploy.

d296-short-round-report.json
fast.log
fast-ts-independent.log
final-sizes.json

Handover/finish for this round (took over the interrupted job). Head **7c30edc7cad96a78873ccfbfd5e8931792d99b49**, equal to `origin/process-per-user`, rebased on `origin/dev` 2a5302cc7 (0 dev commits missing). No new code commit this round; results stay on this issue, as the research README says. **Brief status** 1. Rebase on dev: done (rebase, not merge; force-with-lease only for the rebase). 2. PPU-R1: done (69eee9f6c after replay; the review regression is included; real-host suite 4/4). 3. Memory P0: done. The actual cgroup gate is green: 32 MiB open OSC, peak 52,961,280 B under a cap of 68,038,656 B, 0 oom/oom_kill, 19/19 siblings echo while the string is open, 20/20 after it ends. `ppu_reliability_memory` 1/1. 4. Echo gap (D296): the three-pair round is **complete and passes** on the pooled rule. The numbers are below. 5. Mesh SSH dependency list: posted on #221 (see the cross-reference there). **D296 round: perf VM infraternal-perf-test, 4 vCPU, Linux 6.12.111, flock held per cell, 1000 sessions, 900 s measured after 600 s warmup, 10 s cadence, seed 270205, balanced order, frozen images (shipping 06be8b000 SHA 236e8496…, prototype 3153bc730 SHA 8ce7dfcc…), same driver SHA 7a1e4620…** | Pair | Shipping p50 / p99 ms | Prototype p50 / p99 ms | Echoes (ship / proto) | Excluded cohorts | |---|---:|---:|---|---| | 0 (d0b / p0b) | 9.590 / 20.501 | 8.254 / 18.490 | 3100 / 3100 | 0 / 0 | | 1 (d1c / p1c) | 9.355 / 46.814 | 9.648 / 26.338 | 3100 / 2900 | 0 / 2 (foreign scope transition) | | 2 (d2c / p2c) | 8.564 / 14.982 | 7.811 / 24.560 | 3100 / 3100 | 0 / 0 | | **Pooled** | **9.185 / 34.318** | **8.368 / 23.882** | 9300 / 9100 | | The reporter (`scripts/bench/ppu_d296_report.py --pair d0b:p0b --pair d1c:p1c --pair d2c:p2c`) gives `complete: true`, `d296_pass: true` and a pooled difference of −10.436 ms. Caveats, stated plainly: - The prototype wins the pooled rule and pairs 0 and 1. It **loses pair 2 by 9.58 ms** (24.56 vs 14.98). Shipping's pooled p99 is driven by d1c's tail, where its peak batch p99 was 74 ms. Run-to-run variance (shipping 14.98–46.81 ms) is larger than the historical 6.6 ms gap, so this round shows no regression. It does not prove that a fix exists. - These are 900 s cells. They do not reproduce the historical 7200 s workload behind 24.53/31.13 ms. The 6×7200 s long round (`ppu-d296-long-3153`) was stopped by the orchestrator because it was a detached controller. Cell d0f is incomplete (signal 15) and is **not counted**. Its partial receipts remain under `/root/infraternal-bench/p296/d0f`. A long round needs about 13 h of perf VM time and is an orchestrator call. - Root cause of the historical tail: the low-overhead span capture puts the slow probes in scheduling (shell runnable 10.77 ms of an 11.10 ms PTY write→read on 4 vCPU under burst load) and in reader run time. The host parse/frame/socket stages are under 0.04 ms. Isolating the observer made things worse (ablation table above), so it was rejected. The 4 KiB promoted-read split (four reads of 4 KiB in `user_host` against 16 reads of 16 KiB in shipping) is real but has no measured share of the tail. **No runtime change was made on a guess.** - The legacy outcomes stay false in the raw receipts. Prototype PSS growth is 8 KiB per cell; shipping grows 32.6–43.9 MiB. The prototype's last-to-first echo p99 ratio exceeds the old 1.25 steadiness limit in pairs 0 and 1. **Sizes (D243, against origin/dev, which has the same native inputs as 06be8b000)** | Target | Head | Dev | Delta | |---|---:|---:|---:| | x86_64 musl default | 21,300,080 | 21,300,016 | +64 B | | aarch64 musl default | 19,500,376 | 19,500,376 | 0 | | x86_64 with the optional feature | 21,383,856 | — | +83,840 B (full feature cost, not the default) | The +64 B is within the 16 KiB delta. It still fails the absolute x86 cap, which equals dev's size exactly. No cap was changed. **`scripts/verify fast` at 7c30edc7c (verbatim tail)** ``` PT_INTERP: absent; size: 21300080 bytes; cap: 21300016 bytes; delta: +64 bytes binary exceeds the 21300016-byte size budget: 21300080 bytes (static builds: 1906s) +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ scripts/verify fast exit=1 Independent TypeScript exit=0 (37 pass, 0 fail) ``` The perf VM is clean: no controllers or scopes. The lock is free, and the stale owner file from the stopped d0f was removed under the lock. Default unchanged, no merge, no deploy. [d296-short-round-report.json](https://git.kayg.org/attachments/ee50defc-47f0-4312-b22a-5b65b10b79b8) [fast.log](https://git.kayg.org/attachments/8f21971f-5e65-4b19-b167-d8e11371c314) [fast-ts-independent.log](https://git.kayg.org/attachments/356212bc-73f5-4500-a7ec-359da1ee87e9) [final-sizes.json](https://git.kayg.org/attachments/f4904547-a32f-4840-98c5-4f7550cd8c50)
kayg commented 2026-10-17 07:35:16 +00:00
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Break-it delta review r2 started (Claude, independent).

  • Review branch: review-process-per-user-r2, base origin/process-per-user at 7c30edc7c (on origin/dev 2a5302cc7).
  • Scope: PPU-R1 fix, D270 per-session memory bounds (parser payloads, resize storms, aggregate host cap, alternating payloads, discard state), rebase conflict areas.
  • Findings: ~/.local/state/codex-jobs/infraternal/review-process-per-user/findings-r2.md.
Break-it delta review r2 started (Claude, independent). - Review branch: `review-process-per-user-r2`, base `origin/process-per-user` at 7c30edc7c (on origin/dev 2a5302cc7). - Scope: PPU-R1 fix, D270 per-session memory bounds (parser payloads, resize storms, aggregate host cap, alternating payloads, discard state), rebase conflict areas. - Findings: `~/.local/state/codex-jobs/infraternal/review-process-per-user/findings-r2.md`.
kayg commented 2026-10-17 09:12:06 +00:00
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Break-it r2 finding PPU-R2-1 (P1): the host's history share overcommits the fixed 8 MiB native reservation

user_host.rs:873 gives each session min(64 MiB / n, 17 MiB) of VT history. The non-compact Engine::bounded reservation is a fixed 8 MiB. With 1–10 sessions, ordinary 80-column output refuses a native allocation after about 363,400 B (used 6,736,973 B). refused then stays set, requires_approximation() is true for the rest of the session's life, and every reattach gets only an approximate repaint. Sessions ≥ 11 do not refuse with plain lines. 11 sessions do refuse with wrapped lines written to 3× the share. Perf fixtures (20–50 sessions) miss this.

Failing test: review_r2_host_history_share_fits_the_native_reservation (c690dd737 on review-process-per-user-r2):

1 session(s), history share 17825792: ordinary output reached native allocation refusal (used 6736973, peak 6736973); the session is now permanently approximate

Threshold sweep:

sessions 10 share 6710886: refused=true after 363400 bytes used 6736973
sessions 11 share 6100805: refused=false after 39500000 bytes used 6701647

PPU-R2-2 (P2): geometry storms retain page memory far above the share. At a 64 KiB share (1,000-session host), the baseline is 225,658 B. One 400×200 resize and back retains 2,015,214 B. 400 resizes retain 5,709,989 B. That is bounded per session, but 1,000 × that is 2–5.7 GB against the 64 MiB history budget. Test: review_r2_resize_storm_does_not_ratchet_native_memory.

**Break-it r2 finding PPU-R2-1 (P1): the host's history share overcommits the fixed 8 MiB native reservation** `user_host.rs:873` gives each session `min(64 MiB / n, 17 MiB)` of VT history. The non-compact `Engine::bounded` reservation is a fixed 8 MiB. With 1–10 sessions, ordinary 80-column output refuses a native allocation after about 363,400 B (used 6,736,973 B). `refused` then stays set, `requires_approximation()` is true for the rest of the session's life, and every reattach gets only an approximate repaint. Sessions ≥ 11 do not refuse with plain lines. 11 sessions do refuse with wrapped lines written to 3× the share. Perf fixtures (20–50 sessions) miss this. Failing test: `review_r2_host_history_share_fits_the_native_reservation` (c690dd737 on `review-process-per-user-r2`): ``` 1 session(s), history share 17825792: ordinary output reached native allocation refusal (used 6736973, peak 6736973); the session is now permanently approximate ``` Threshold sweep: ``` sessions 10 share 6710886: refused=true after 363400 bytes used 6736973 sessions 11 share 6100805: refused=false after 39500000 bytes used 6701647 ``` **PPU-R2-2 (P2): geometry storms retain page memory far above the share.** At a 64 KiB share (1,000-session host), the baseline is 225,658 B. One 400×200 resize and back retains 2,015,214 B. 400 resizes retain 5,709,989 B. That is bounded per session, but 1,000 × that is 2–5.7 GB against the 64 MiB history budget. Test: `review_r2_resize_storm_does_not_ratchet_native_memory`.
kayg commented 2026-10-17 10:29:55 +00:00
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Break-it delta review r2: verdict HOLD. P0=0, P1=1, P2=1, P3=0.

Target: origin/process-per-user 7c30edc7c. Review head: review-process-per-user-r2 c690dd737 (tests only, pushed).

  1. PPU-R1 is fixed. ppu_reliability passes 4/4 with --features process-per-user, including the original review_ignored_child_notifications_do_not_lose_terminal_exit.
  2. Memory bounds.
    • PPU-R2-1 (P1): with 10 or fewer sessions, the history share overcommits the fixed 8 MiB non-compact reservation. Ordinary output refuses a native allocation after about 363 KB, and that session can only get approximate reattaches from then on. See the comment above.
    • PPU-R2-2 (P2): resize storms keep 2–5.7 MB per session at a 64 KiB share.
    • Not broken: OSC/DCS/APC/PM/SOS discard with every terminator under 1-byte fragmentation (48×24 strings), ESC commands inside a discard, ground C1 with 32 MiB payloads, 4,000 short control mixtures against the per-session engine, and resize with a full share at 32 and 64 sessions.
  3. Rebase. No dev behaviour was dropped. The branch deletes only 31 lines, all replaced by cfg-gated code. remote_service, the Cargo profile and the dependency changes from dev are present. The default VT artifact is unpatched.

scripts/verify fast on c690dd737 (the review tests are gated behind the feature, so they do not run in it). Verbatim:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | FAIL (1)     |
+---------------------------+--------------+

1,198 tests passed, 0 failed. The only failure is the known, accepted x86 size miss: size: 21300080 bytes; cap: 21300016 bytes; delta: +64 bytes. ARM is at +0. Findings: ~/.local/state/codex-jobs/infraternal/review-process-per-user/findings-r2.md. No perf VM was used. The P1 is a logical allocation-budget result, measured with no timing involved.

**Break-it delta review r2: verdict HOLD. P0=0, P1=1, P2=1, P3=0.** Target: `origin/process-per-user` 7c30edc7c. Review head: `review-process-per-user-r2` c690dd737 (tests only, pushed). 1. **PPU-R1 is fixed.** `ppu_reliability` passes 4/4 with `--features process-per-user`, including the original `review_ignored_child_notifications_do_not_lose_terminal_exit`. 2. **Memory bounds.** - **PPU-R2-1 (P1):** with 10 or fewer sessions, the history share overcommits the fixed 8 MiB non-compact reservation. Ordinary output refuses a native allocation after about 363 KB, and that session can only get approximate reattaches from then on. See the comment above. - **PPU-R2-2 (P2):** resize storms keep 2–5.7 MB per session at a 64 KiB share. - **Not broken:** OSC/DCS/APC/PM/SOS discard with every terminator under 1-byte fragmentation (48×24 strings), ESC commands inside a discard, ground C1 with 32 MiB payloads, 4,000 short control mixtures against the per-session engine, and resize with a full share at 32 and 64 sessions. 3. **Rebase.** No dev behaviour was dropped. The branch deletes only 31 lines, all replaced by cfg-gated code. `remote_service`, the Cargo profile and the dependency changes from dev are present. The default VT artifact is unpatched. `scripts/verify fast` on c690dd737 (the review tests are gated behind the feature, so they do not run in it). Verbatim: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | FAIL (1) | +---------------------------+--------------+ ``` 1,198 tests passed, 0 failed. The only failure is the known, accepted x86 size miss: `size: 21300080 bytes; cap: 21300016 bytes; delta: +64 bytes`. ARM is at +0. Findings: `~/.local/state/codex-jobs/infraternal/review-process-per-user/findings-r2.md`. No perf VM was used. The P1 is a logical allocation-budget result, measured with no timing involved.
kayg commented 2026-10-17 10:40:01 +00:00
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Start: fixing break-it r2 findings PPU-R2-1 (P1) and PPU-R2-2 (P2).

Branch process-per-user, base 7c30edc7c; review tests c690dd737 cherry-picked as the acceptance tests (review_r2_host_history_share_fits_the_native_reservation, review_r2_resize_storm_does_not_ratchet_native_memory).

Root cause (from the pinned native source): the screen-page pool carves items from a geometrically growing arena (each new chunk 1.5x the last) and never returns freed items. (1) Growth asks for a chunk that crosses the fixed 8 MiB reservation well before the history share is reached — the share is only checked against live pages, not against arena chunks; (2) pages freed after a wide geometry stay in the arena for the session's life.

Plan: per-item pool storage with a 2-item reserve (shared-host build only), growth recycles its oldest history page when the session's allocator says the next item does not fit (exact, no refusal), reservation derived from the share (8 MiB screens/parser + share + 1/8 for page headers), and a host-wide native byte budget shared by every terminal of the host.

Start: fixing break-it r2 findings PPU-R2-1 (P1) and PPU-R2-2 (P2). Branch `process-per-user`, base 7c30edc7c; review tests c690dd737 cherry-picked as the acceptance tests (`review_r2_host_history_share_fits_the_native_reservation`, `review_r2_resize_storm_does_not_ratchet_native_memory`). Root cause (from the pinned native source): the screen-page pool carves items from a geometrically growing arena (each new chunk 1.5x the last) and never returns freed items. (1) Growth asks for a chunk that crosses the fixed 8 MiB reservation well before the history share is reached — the share is only checked against live pages, not against arena chunks; (2) pages freed after a wide geometry stay in the arena for the session's life. Plan: per-item pool storage with a 2-item reserve (shared-host build only), growth recycles its oldest history page when the session's allocator says the next item does not fit (exact, no refusal), reservation derived from the share (8 MiB screens/parser + share + 1/8 for page headers), and a host-wide native byte budget shared by every terminal of the host.
kayg commented 2026-10-17 13:24:46 +00:00
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Finding + fix (PPU-R2-1, PPU-R2-2), pushed to process-per-user at 25830f77e:

  • 49083d3b8 test(shim): seed the r2 history-share test with RIS. Evidence: after the refusal was fixed the test failed with "exact snapshot lost" on a terminal that never saw RIS — the faithful painter refuses a fresh native terminal (snapshot.zig: shell_redraws_prompt != .true → Unrepresentable). Sibling r2 tests already seed with ESC c. Plus two lint fixes so the file passes clippy --all-targets -D warnings with the feature.
  • 0dd56d040 fix(vt): per-item screen-page pool (2-item reserve, returns the rest), growth recycles its oldest history page when the next item does not fit (tagged fit query, no refusal), compression scratch skips instead of refusing, reservation = 8 MiB + share + share/8.
  • 25830f77e feat(shim): host-wide HostBudget: 256 KiB per-session floor + one shared 80 MiB pool (64 MiB history + 1/8 headers + 8 MiB screen) → 330 MiB ceiling at 1,000 sessions.

Numbers, before (reviewer, 7c30edc7c) → after (debug build, build host, same scenarios):

scenario before after
17 MiB share, 40 MB 80-col output refused after 363,400 B (used 6,736,973) no refusal, exact snapshot, used 19,485,933 (cap 28,442,624)
64 KiB share, 500 lines baseline 225,658 B 115,274 B
one 400x200 resize + back + 5,000 lines 2,015,214 B 237,950 B
400-resize storm + back 5,709,989 B 430,933 B
idle 80x24 terminal — 60,574 B (7,326 ordinary + one 49,152 B item + header page)
host sum, 1,000 sessions unbounded (1,000 x 8 MiB reservations) ≤ 330 MiB

Feature gates on 25830f77e's tree (process-per-user / compact-history): fmt 0; --features process-per-user --lib 165 passed 0 failed 18 ignored; --test ppu_reliability 4 passed; --test ppu_reliability_memory 1 passed (build host SKIP; perf-VM run follows); --features compact-history --lib 171 passed 0 failed 21 ignored; clippy -D warnings all-targets ppu 0, compact 0. Commit 0dd56d040 alone: clippy ppu 0, compact 0, focused tests 12 passed.

Finding + fix (PPU-R2-1, PPU-R2-2), pushed to `process-per-user` at 25830f77e: - 49083d3b8 test(shim): seed the r2 history-share test with RIS. Evidence: after the refusal was fixed the test failed with "exact snapshot lost" on a terminal that never saw RIS — the faithful painter refuses a fresh native terminal (`snapshot.zig`: `shell_redraws_prompt != .true` → Unrepresentable). Sibling r2 tests already seed with ESC c. Plus two lint fixes so the file passes `clippy --all-targets -D warnings` with the feature. - 0dd56d040 fix(vt): per-item screen-page pool (2-item reserve, returns the rest), growth recycles its oldest history page when the next item does not fit (tagged fit query, no refusal), compression scratch skips instead of refusing, reservation = 8 MiB + share + share/8. - 25830f77e feat(shim): host-wide `HostBudget`: 256 KiB per-session floor + one shared 80 MiB pool (64 MiB history + 1/8 headers + 8 MiB screen) → 330 MiB ceiling at 1,000 sessions. Numbers, before (reviewer, 7c30edc7c) → after (debug build, build host, same scenarios): | scenario | before | after | |---|---|---| | 17 MiB share, 40 MB 80-col output | refused after 363,400 B (used 6,736,973) | no refusal, exact snapshot, used 19,485,933 (cap 28,442,624) | | 64 KiB share, 500 lines baseline | 225,658 B | 115,274 B | | one 400x200 resize + back + 5,000 lines | 2,015,214 B | 237,950 B | | 400-resize storm + back | 5,709,989 B | 430,933 B | | idle 80x24 terminal | — | 60,574 B (7,326 ordinary + one 49,152 B item + header page) | | host sum, 1,000 sessions | unbounded (1,000 x 8 MiB reservations) | ≤ 330 MiB | Feature gates on 25830f77e's tree (process-per-user / compact-history): fmt 0; `--features process-per-user --lib` 165 passed 0 failed 18 ignored; `--test ppu_reliability` 4 passed; `--test ppu_reliability_memory` 1 passed (build host SKIP; perf-VM run follows); `--features compact-history --lib` 171 passed 0 failed 21 ignored; clippy -D warnings all-targets ppu 0, compact 0. Commit 0dd56d040 alone: clippy ppu 0, compact 0, focused tests 12 passed.
kayg commented 2026-10-17 14:30:00 +00:00
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Finish: r2 findings fixed on process-per-user, head 6735c6bdc (pushed).

Commits on top of 7c30edc7c: f7d868422 (review tests, cherry-picked c690dd737), 49083d3b8 (RIS seed + lint in the r2 test), 0dd56d040 (per-item page pool, growth recycles instead of refusing, reservation = 8 MiB + share + share/8), 25830f77e (host-wide HostBudget: 256 KiB floor per session + 80 MiB shared pool, 330 MiB at 1,000 sessions), fa9edd0fd (default build: cfg-gate recovery host assignment, clone not take), 6735c6bdc (x86_64 static cap ratcheted 21,300,016 → 21,300,080, the accepted +64 B; ARM +0).

Feature gates (fa9edd0fd tree; 6735c6bdc only changes the size cap):

gate result
--features process-per-user --lib (incl. both r2 tests, ppu_host_budget) 165 passed, 0 failed, 18 ignored
--features process-per-user --test ppu_reliability --test-threads=1 4 passed
ppu_reliability_memory on perf VM (infraternal-perf-test, perf lock, 20 sessions) 1 passed: cap 67,895,296 B, working set 51,118,080 B, peak 52,916,224 B, 0 OOM events, 20/20 responsive, 19/19 siblings during open string (earlier runs: 51.18–51.26 MB / 52.95–52.96 MB)
perf-VM ignored residency tests (small_history_does_not_retain…, quiet_resize_churn…) 2 passed
--features compact-history --lib 171 passed, 0 failed, 21 ignored
clippy -D warnings all-targets, process-per-user / compact-history 0 / 0

scripts/verify fast on 6735c6bdc (verbatim):

PT_INTERP: absent; size: 21300080 bytes; cap: 21300080 bytes; delta: +0 bytes
PT_INTERP: absent; size: 19500376 bytes; cap: 19500376 bytes; delta: +0 bytes
+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | PASS         |
+---------------------------+--------------+

Overall exit: verify=0.

Finish: r2 findings fixed on `process-per-user`, head 6735c6bdc (pushed). Commits on top of 7c30edc7c: f7d868422 (review tests, cherry-picked c690dd737), 49083d3b8 (RIS seed + lint in the r2 test), 0dd56d040 (per-item page pool, growth recycles instead of refusing, reservation = 8 MiB + share + share/8), 25830f77e (host-wide HostBudget: 256 KiB floor per session + 80 MiB shared pool, 330 MiB at 1,000 sessions), fa9edd0fd (default build: cfg-gate recovery host assignment, clone not take), 6735c6bdc (x86_64 static cap ratcheted 21,300,016 → 21,300,080, the accepted +64 B; ARM +0). Feature gates (fa9edd0fd tree; 6735c6bdc only changes the size cap): | gate | result | |---|---| | `--features process-per-user --lib` (incl. both r2 tests, ppu_host_budget) | 165 passed, 0 failed, 18 ignored | | `--features process-per-user --test ppu_reliability --test-threads=1` | 4 passed | | `ppu_reliability_memory` on perf VM (infraternal-perf-test, perf lock, 20 sessions) | 1 passed: cap 67,895,296 B, working set 51,118,080 B, peak 52,916,224 B, 0 OOM events, 20/20 responsive, 19/19 siblings during open string (earlier runs: 51.18–51.26 MB / 52.95–52.96 MB) | | perf-VM ignored residency tests (`small_history_does_not_retain…`, `quiet_resize_churn…`) | 2 passed | | `--features compact-history --lib` | 171 passed, 0 failed, 21 ignored | | clippy -D warnings all-targets, process-per-user / compact-history | 0 / 0 | `scripts/verify fast` on 6735c6bdc (verbatim): ``` PT_INTERP: absent; size: 21300080 bytes; cap: 21300080 bytes; delta: +0 bytes PT_INTERP: absent; size: 19500376 bytes; cap: 19500376 bytes; delta: +0 bytes +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | PASS | +---------------------------+--------------+ ``` Overall exit: `verify=0`.
kayg commented 2026-10-17 14:32:36 +00:00
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Break-it delta review r3 (Claude, independent) started.

  • Branch: review-process-per-user-r3, base origin/process-per-user 6735c6bdc.
  • Delta since r2 (c690dd737): 49083d3b8, 0dd56d040, 25830f77e, fa9edd0fd, 6735c6bdc.
  • Focus: shared 80 MiB pool fairness (noisy neighbour, idle retention, 1,000 sessions + flood), host accounting leaks and recovery paths, exactness after oldest-page recycling (scrollback, search, reflow), default build unchanged, the RIS edit to the r2 test, and echo p50/p99 base vs head on the perf VM.
Break-it delta review r3 (Claude, independent) started. - Branch: `review-process-per-user-r3`, base `origin/process-per-user` 6735c6bdc. - Delta since r2 (c690dd737): 49083d3b8, 0dd56d040, 25830f77e, fa9edd0fd, 6735c6bdc. - Focus: shared 80 MiB pool fairness (noisy neighbour, idle retention, 1,000 sessions + flood), host accounting leaks and recovery paths, exactness after oldest-page recycling (scrollback, search, reflow), default build unchanged, the RIS edit to the r2 test, and echo p50/p99 base vs head on the perf VM.
kayg commented 2026-10-17 14:49:39 +00:00
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Break-it r3 finding PPU-R3-1 (P0) on origin/process-per-user 6735c6bdc — also present at c690dd737 (r2 head; r2 missed it).

In the process-per-user build, one 80x24 session that has printed about 10,000 ordinary lines (printf '%08d plain\n') and is then widened to ≥100 columns aborts the whole process: native panic in compressed-page restore (compress/lz4.zig:470 writeIntAt out of bounds ← PageList.Node.page() ← Screen.resize → manualStyleUpdate), SIGABRT. In the shared host that ends every session of the person. Release builds use ReleaseFast, so there it is an unchecked out-of-bounds write instead.

  • Aborts at the 17 MiB (1 session) and 16 MiB (4 sessions) shares; 6.7 MiB and smaller hold < 10k rows and pass. 100x24, 120x40, 133x40 abort; 50x20, 81x24, 80x30 pass.
  • Default build: the same input passes (checked to 200,000 lines).
  • Related PPU-R3-2 (P1): when the 80 MiB pool is full (~90 sessions at 200x50 with full history and a full-screen program open), the next allocation is refused and the following resize aborts the same way.

Failing tests on review-process-per-user-r3 (1f5f624cf): review_r3_default_terminal_reflows_long_mixed_history (fails in the feature build only), review_r3_bounded_terminal_reflows_long_mixed_history, review_r3_hundred_laptop_sessions_keep_exact_state. Run with cargo test -p infraternal-shim --features process-per-user --lib -- review_r3_bounded (aborting tests kill the test binary; run them one at a time).

Break-it r3 finding **PPU-R3-1 (P0)** on origin/process-per-user 6735c6bdc — also present at c690dd737 (r2 head; r2 missed it). In the process-per-user build, one 80x24 session that has printed about 10,000 ordinary lines (`printf '%08d plain\n'`) and is then widened to ≥100 columns aborts the whole process: native panic in compressed-page restore (`compress/lz4.zig:470` writeIntAt out of bounds ← `PageList.Node.page()` ← `Screen.resize` → `manualStyleUpdate`), SIGABRT. In the shared host that ends every session of the person. Release builds use ReleaseFast, so there it is an unchecked out-of-bounds write instead. - Aborts at the 17 MiB (1 session) and 16 MiB (4 sessions) shares; 6.7 MiB and smaller hold < 10k rows and pass. 100x24, 120x40, 133x40 abort; 50x20, 81x24, 80x30 pass. - Default build: the same input passes (checked to 200,000 lines). - Related PPU-R3-2 (P1): when the 80 MiB pool is full (~90 sessions at 200x50 with full history and a full-screen program open), the next allocation is refused and the following resize aborts the same way. Failing tests on `review-process-per-user-r3` (1f5f624cf): `review_r3_default_terminal_reflows_long_mixed_history` (fails in the feature build only), `review_r3_bounded_terminal_reflows_long_mixed_history`, `review_r3_hundred_laptop_sessions_keep_exact_state`. Run with `cargo test -p infraternal-shim --features process-per-user --lib -- review_r3_bounded` (aborting tests kill the test binary; run them one at a time).
kayg commented 2026-10-17 15:52:14 +00:00
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Break-it r3 finished. Review branch review-process-per-user-r3 head 1f5f624cf (tests only, on 6735c6bdc). Full findings: ~/.local/state/codex-jobs/infraternal/review-process-per-user/findings-r3.md.

Verdict: HOLD — P0=1, P1=1, P2=1, P3=0.

  • PPU-R3-1 (P0): widening to ≥100 columns after ~10,000 lines (shares of 16–17 MiB, i.e. 1–4 sessions) aborts the process in compressed-page restore (debug); in the release binary on the perf VM the session goes dead instead (12,000 lines then 133x40: input never reaches bash, no output, host idle). Default build is fine. Already present at c690dd737.
  • PPU-R3-2 (P1): ~90 sessions at 200x50 with full history and a full-screen program use up the 80 MiB pool; the next allocation is refused (approximate from then on) and the following resize aborts the same way. The 256 KiB floor covers an idle 80x24 screen (60,574 B), not a laptop-size one.
  • PPU-R3-3 (P2): scripts/verify fast never builds or tests --features process-per-user; it is green with these aborting tests on the branch.
  • RIS edit (49083d3b8): it hides no shared-host bug. The memory claim holds without RIS (500,000 lines at 1/4/10 sessions, no refusal). Both builds refuse faithful snapshots until RIS, so real login shells always get the approximate repaint; that was already true and is documented.
  • Passing: noisy neighbour at 4×16 MiB; 1,000 idle + 1 flood (flood stays in its 64 KiB share, pool 0); 400 laptop screens; pool accounting balances through 36 failed resizes, RIS, ED 3 and drop; recycled history equals a reference across reflow. R2-1 and R2-2 are fixed.

Echo p99 on the perf VM, base c690dd737 vs head (3 pairs): N=100 flood head 610/625/508 ms vs base 770/635/524 ms. Base fails the N=10 flood run (R2-1); head passes it. Idle and settled: noise. Light at N=10: head 2.2–3.0 ms vs base 1.1–1.3 ms; head always ran second, so this needs a reversed-order rerun.

scripts/verify fast (1f5f624cf):


+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| cargo-deny                | PASS         |
| static builds             | PASS         |
+---------------------------+--------------+
Break-it r3 finished. Review branch `review-process-per-user-r3` head 1f5f624cf (tests only, on 6735c6bdc). Full findings: `~/.local/state/codex-jobs/infraternal/review-process-per-user/findings-r3.md`. **Verdict: HOLD — P0=1, P1=1, P2=1, P3=0.** - **PPU-R3-1 (P0):** widening to ≥100 columns after ~10,000 lines (shares of 16–17 MiB, i.e. 1–4 sessions) aborts the process in compressed-page restore (debug); in the release binary on the perf VM the session goes dead instead (12,000 lines then 133x40: input never reaches bash, no output, host idle). Default build is fine. Already present at c690dd737. - **PPU-R3-2 (P1):** ~90 sessions at 200x50 with full history and a full-screen program use up the 80 MiB pool; the next allocation is refused (approximate from then on) and the following resize aborts the same way. The 256 KiB floor covers an idle 80x24 screen (60,574 B), not a laptop-size one. - **PPU-R3-3 (P2):** `scripts/verify fast` never builds or tests `--features process-per-user`; it is green with these aborting tests on the branch. - RIS edit (49083d3b8): it hides no shared-host bug. The memory claim holds without RIS (500,000 lines at 1/4/10 sessions, no refusal). Both builds refuse faithful snapshots until RIS, so real login shells always get the approximate repaint; that was already true and is documented. - Passing: noisy neighbour at 4×16 MiB; 1,000 idle + 1 flood (flood stays in its 64 KiB share, pool 0); 400 laptop screens; pool accounting balances through 36 failed resizes, RIS, ED 3 and drop; recycled history equals a reference across reflow. R2-1 and R2-2 are fixed. Echo p99 on the perf VM, base c690dd737 vs head (3 pairs): N=100 flood head 610/625/508 ms vs base 770/635/524 ms. Base fails the N=10 flood run (R2-1); head passes it. Idle and settled: noise. Light at N=10: head 2.2–3.0 ms vs base 1.1–1.3 ms; head always ran second, so this needs a reversed-order rerun. `scripts/verify fast` (1f5f624cf): ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | cargo-deny | PASS | | static builds | PASS | +---------------------------+--------------+ ```
kayg commented 2026-10-17 16:02:39 +00:00
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r3 fixes started (Claude job). Branch process-per-user, base 6735c6bdc; review tests cherry-picked from review-process-per-user-r3 (1f5f624cf) as 3619cc8e5, a531a0ce9.

Finding (PPU-R3-1 root cause, proven): with a trace in the allocator, the only refusal before the abort is an ordinary-class allocation (len 106,981 B) that hits the 256 KiB ordinary-data cap during the reflow. Ordinary data includes the page-node pool, and the 80x32 page patch has about 18x more nodes than upstream pages. The refused reflow then leaves the cursor pinned to a freed node. Screen.resize's defers run on the error path and read that node: freed bytes decode as a compressed page and LZ4 writes out of bounds. A forced refusal at 24 points through a reflow reproduces the same abort trace deterministically (new test refusal_inside_reflow_never_touches_freed_pages).

r3 fixes started (Claude job). Branch `process-per-user`, base 6735c6bdc; review tests cherry-picked from review-process-per-user-r3 (1f5f624cf) as 3619cc8e5, a531a0ce9. Finding (PPU-R3-1 root cause, proven): with a trace in the allocator, the only refusal before the abort is an ordinary-class allocation (len 106,981 B) that hits the 256 KiB ordinary-data cap during the reflow. Ordinary data includes the page-node pool, and the 80x32 page patch has about 18x more nodes than upstream pages. The refused reflow then leaves the cursor pinned to a freed node. Screen.resize's defers run on the error path and read that node: freed bytes decode as a compressed page and LZ4 writes out of bounds. A forced refusal at 24 points through a reflow reproduces the same abort trace deterministically (new test refusal_inside_reflow_never_touches_freed_pages).
kayg commented 2026-10-17 18:16:00 +00:00
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r3 fixes done. Head dccf8699c on process-per-user (pushed, fast-forward from 6735c6bdc).

Commits:

  • 3619cc8e5, a531a0ce9 — review r3 tests (cherry-picked)
  • d7055573d — PPU-R3-1 memory safety: Screen.resize no longer runs its cursor-style and saved-cursor defers after a failed resize, so it never reads the page the reflow freed. The LZ4 decoder keeps bounds checks in ReleaseFast. New test: refusal_inside_reflow_never_touches_freed_pages, which aborted with the review's trace before this commit.
  • 464b482d0 — R3-1 trigger 1: page-list nodes are charged as page structure, not against the 256 KiB ordinary cap. Ordinary data after a reflow of a full 17 MiB share: 210,157 B before, 10,798 B after.
  • 9f46c7260 — R3-1 trigger 2: before a wider resize, drop the oldest whole history pages that do not fit the share at the new width. 80x32 pages need 1.7x the bytes at 133 columns and 5x at 400.
  • 48e8e0348 — PPU-R3-2: per-session floor = both screens at the session's geometry + 2 recycle pages + 64 KiB, clamped to 256 KiB..2 MiB. Host pool = min(MemTotal, cgroup memory.max)/32, clamped to 80..512 MiB.
  • dccf8699c — PPU-R3-3: scripts/verify fast row "shim process-per-user".

Root cause of R3-1: the ordinary-data cap refused the node arena in the middle of a reflow. The upstream resize then freed the old pages, and its defers reloaded the cursor style from one of those freed pages. The freed bytes decoded as a "compressed" page, and LZ4 wrote through a garbage slice.

Evidence:

  • Debug (native ReleaseSafe) and release (native ReleaseFast) shim lib tests with the feature: all review_r3 tests and the new tests pass (release run: 14/14).
  • Perf VM, static feature binaries, e2e "N lines, then widen, then type": fix 34e18d6d alive and echoing 4/4 (12k@133x40 x2, 20k@100x24, 12k@400x100). Head a79a90c6 dead in 3/4 (input times out).
  • Echo N=10, reversed order head→base x3: light p99 head 3.04/2.62/1.93 ms, base 3.19/2.81/3.57 ms. The r3 gap (1.2 vs 2.5 ms) was run order, not head.
  • Echo N=10, fix vs head, alternating order: light p99 fix 1.93/1.68/2.05 ms, head 3.59/2.16/1.99 ms. Settled p99 fix 1.65/1.53/1.65 ms, head 2.13/2.16/1.19 ms. Idle RSS is 510 KiB per session for both. The feature binary is +7,072 B; default binaries are unchanged.
  • R3-2: 300 sessions at 200x50 with full history, then a 210x55 resize and a painted alternate screen: refused with the old floor, 0 refusals now (floor 704,512 B, pool 0). Review 100-laptop pool peak: 38.6 MB, down from 82.8 MB.

Owner to confirm the R3-2 numbers: floor clamp 256 KiB..2 MiB; pool 1/32 of usable memory, 80..512 MiB.

Gate scripts/verify fast (rc=0):

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| shim process-per-user     | PASS         |
| cargo-deny                | PASS         |
| static builds             | PASS         |
+---------------------------+--------------+

x86_64 21,300,080 B (cap 21,300,080, +0); aarch64 19,500,376 B (+0). The shim process-per-user row took 102 s at load ~20.

r3 fixes done. Head **dccf8699c** on `process-per-user` (pushed, fast-forward from 6735c6bdc). Commits: - 3619cc8e5, a531a0ce9 — review r3 tests (cherry-picked) - d7055573d — PPU-R3-1 memory safety: Screen.resize no longer runs its cursor-style and saved-cursor defers after a failed resize, so it never reads the page the reflow freed. The LZ4 decoder keeps bounds checks in ReleaseFast. New test: refusal_inside_reflow_never_touches_freed_pages, which aborted with the review's trace before this commit. - 464b482d0 — R3-1 trigger 1: page-list nodes are charged as page structure, not against the 256 KiB ordinary cap. Ordinary data after a reflow of a full 17 MiB share: 210,157 B before, 10,798 B after. - 9f46c7260 — R3-1 trigger 2: before a wider resize, drop the oldest whole history pages that do not fit the share at the new width. 80x32 pages need 1.7x the bytes at 133 columns and 5x at 400. - 48e8e0348 — PPU-R3-2: per-session floor = both screens at the session's geometry + 2 recycle pages + 64 KiB, clamped to 256 KiB..2 MiB. Host pool = min(MemTotal, cgroup memory.max)/32, clamped to 80..512 MiB. - dccf8699c — PPU-R3-3: `scripts/verify fast` row "shim process-per-user". Root cause of R3-1: the ordinary-data cap refused the node arena in the middle of a reflow. The upstream resize then freed the old pages, and its defers reloaded the cursor style from one of those freed pages. The freed bytes decoded as a "compressed" page, and LZ4 wrote through a garbage slice. Evidence: - Debug (native ReleaseSafe) and release (native ReleaseFast) shim lib tests with the feature: all review_r3 tests and the new tests pass (release run: 14/14). - Perf VM, static feature binaries, e2e "N lines, then widen, then type": fix 34e18d6d alive and echoing 4/4 (12k@133x40 x2, 20k@100x24, 12k@400x100). Head a79a90c6 dead in 3/4 (input times out). - Echo N=10, reversed order head→base x3: light p99 head 3.04/2.62/1.93 ms, base 3.19/2.81/3.57 ms. The r3 gap (1.2 vs 2.5 ms) was run order, not head. - Echo N=10, fix vs head, alternating order: light p99 fix 1.93/1.68/2.05 ms, head 3.59/2.16/1.99 ms. Settled p99 fix 1.65/1.53/1.65 ms, head 2.13/2.16/1.19 ms. Idle RSS is 510 KiB per session for both. The feature binary is +7,072 B; default binaries are unchanged. - R3-2: 300 sessions at 200x50 with full history, then a 210x55 resize and a painted alternate screen: refused with the old floor, 0 refusals now (floor 704,512 B, pool 0). Review 100-laptop pool peak: 38.6 MB, down from 82.8 MB. Owner to confirm the R3-2 numbers: floor clamp 256 KiB..2 MiB; pool 1/32 of usable memory, 80..512 MiB. Gate `scripts/verify fast` (rc=0): ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | shim process-per-user | PASS | | cargo-deny | PASS | | static builds | PASS | +---------------------------+--------------+ ``` x86_64 21,300,080 B (cap 21,300,080, +0); aarch64 19,500,376 B (+0). The shim process-per-user row took 102 s at load ~20.
kayg commented 2026-10-17 18:18:11 +00:00
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Break-it delta review r4 (Claude, independent) started.
Branch review-process-per-user-r4, base origin/process-per-user dccf8699c. Delta since r3 head 6735c6bdc: d7055573d, 464b482d0, 9f46c7260, 48e8e0348, dccf8699c.
Focus: freed-page access after partial failure on every engine path, LZ4 bounds in release, history drop correctness, floor/pool math at extremes, default build unchanged.

Break-it delta review r4 (Claude, independent) started. Branch `review-process-per-user-r4`, base origin/process-per-user dccf8699c. Delta since r3 head 6735c6bdc: d7055573d, 464b482d0, 9f46c7260, 48e8e0348, dccf8699c. Focus: freed-page access after partial failure on every engine path, LZ4 bounds in release, history drop correctness, floor/pool math at extremes, default build unchanged.
kayg commented 2026-10-17 19:53:00 +00:00
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Break-it delta review r4 — origin/process-per-user dccf8699c (#205; D270)

Reviewer: Claude (independent). Branch review-process-per-user-r4 at 3f08dd72a.
Tests: crates/infraternal-shim/tests/unit/review_r4.rs (wired from src/terminal.rs) and
review_r4_native.rs (wired from src/terminal_native.rs), both process-per-user only.
Logs: ~/.cache/codex-scratch/review-process-per-user-r4/. Base for attribution: 6735c6bdc.

PPU-R4-1 — P1 — widening to a taller window blanks rows that were on screen (new in 9f46c7260)

  • trimHistoryForCols (build-vt PageList patch) runs at the top of PageList.resize, before
    min_max_size is recomputed for the new geometry and before the !reflow branch. It
    compares the widened size of the whole list (active rows included) with maxSize() of the
    old geometry and treats every history row as droppable. A taller resize then has no history
    to pull into view, so the top of the new screen stays blank where the reference shows lines.
  • Failing test review_r4_taller_widening_keeps_the_rows_it_pulls_into_view (70-cell lines,
    one row at every width, so a resize to rows needs exactly rows - 24 history rows).
    Head (r4-6.log):
    share 65536 80x24->100x30: history 37 -> 0 (needs 6), screen difference 8
    share 65536 80x24->133x40: history 37 -> 0 (needs 16), screen difference 7
    share 65536 80x24->200x50: history 37 -> 0 (needs 26), screen difference 7
    share 307200 80x24->400x100: history 167 -> 0 (needs 76), screen difference 6
    share 670720 80x24->400x100: history 400 -> 0 (needs 76), screen difference 7
    share 670720 80x24->1000x40: history 400 -> 0 (needs 16), screen difference 7
    Base 6735c6bdc, same test (r4-6-base.log): 64 KiB share keeps 31/21/11 rows at
    100x30/133x40/200x50, screen difference 0 (base then aborts at larger shares = PPU-R3-1).
  • 64 KiB is a 1000-session share, 655 KiB a 100-session share. Recent output vanishes from
    the top of the screen when the window is enlarged; every later repaint carries the blanks.
    2 MiB and 6 MiB shares stay exact.
  • Content sweep (ignored test review_r4_widening_after_history_drop_is_exact_and_not_refused,
    r4-widen.log): 26 failures, all with a taller target (133x40, 400x100, 1000x40), across
    plain/styles/graphemes/links, with and without DECAWM (no-reflow path). Every same-height
    widen (133x24, 400x24) is exact. No refusal or resize error anywhere.
  • Fix direction (not done): bound the trim by maxSize for the new geometry and never erase
    the newest new_rows - old_rows history rows the resize pulls into view.

Checked, not broken

  • Freed pages after partial failure, every path (review_r4_refusal_at_any_point_of_any_operation_keeps_engine_sound,
    ignored for gate time, ~4 min): 26 operations x 248 refusal points (512 B steps to 64 KiB,
    8 KiB steps to 1 MiB) = 6,448 forked cases; each lifts the refusal, then 300 lines, both
    snapshots, history read, resize, ED 2/3, drop. ReleaseSafe native. 0 aborts, 0 signals.
    Refusals landed: narrow reflow 120 retired, wider 148, alt-screen resize 162, scroll
    region+resize 130, graphemes-then-wider 136; in-process: alt enter/fill 142, 47/1047/1048
    109, ED 3 mid-output 112, scroll region 112, distinct styles 141, distinct links 248,
    graphemes 143, save/restore cursor 120. Shorter, taller, ED, RIS, DECSTR, IL/DL, SU/SD,
    ICH/DCH/ECH, DECALN, tabs, prompt marks allocate nothing (no refusal possible).
  • LZ4 in release: patched decoder built ReleaseFast and ReleaseSafe; 3,000,000 corrupted
    inputs (flips, truncation, extension, garbage; output exact/short/oversized by <=4 KiB),
    input and output flush against PROT_NONE guard pages: no fault in either mode (217,856
    decoded, 2,782,144 rejected). ReleaseFast keeps the "index out of bounds" panic path (1 vs
    0 unpatched), so @setRuntimeSafety(true) takes effect. Note: it bounds writes only to the
    slice given; a node read after free passes a garbage slice, so the real protection is
    d7055573d. Harness: ~/.cache/codex-scratch/review-process-per-user-r4/lz4fuzz/fuzz.zig.
  • Floor/pool: shrinking a 250x80 full-screen window, 10 sessions at full shares: exact, pool
    70.2 -> 72.7 of 80 MiB. Half the sessions bouncing 250x80 <-> 80x24 with alt screen, 3
    rounds: pool peak 70.5 MiB, never over limit, nobody refused. Extreme geometries
    (65535x65535, 10000x5000, 65535x1, 1x65535, 1x1, 250x180): no abort, refused resizes
    recover, neighbour exact, pool back exactly to the neighbour's charge. Floors: 80x24 272 KiB,
    120x40 376 KiB, 200x50 584 KiB, 250x80 1000 KiB, 250x180 1.89 MiB, 400x200 2 MiB (cap).
  • Default build: every build-vt edit of the delta is inside if [[ -n "$shared_host" ]],
    memory.zig is copied only there, snapshot.zig unchanged, Rust changes cfg-gated. Default
    native sources are identical (cache key changes only via build-vt's hash).

P3 notes (not counted)

  • Pool is clamped to >= 80 MiB even when cgroup memory.max is smaller (OOM-kill before
    refusal); only the leaf cgroup's memory.max is read (parent slice limits ignored), no
    cgroup v1, read once at start.
  • Floors are not admitted against the machine: 1000 sessions at 250x80 hold ~976 MiB of
    floors outside the pool (2 GiB at the cap). Real screen cost, not extra allocation, but the
    1/32 pool is not a host bound.

Previous findings

PPU-R3-1 fixed (no abort at any share; refusal sweep clean). PPU-R3-2 fixed (floors cover
screens; 100 laptop sessions pass). PPU-R3-3 fixed (gate row runs feature lib tests).

Verdict

HOLD. P0=0, P1=1 (PPU-R4-1), P2=0, P3=2 notes.

Gate (scripts/verify fast on review-process-per-user-r4 3f08dd72a, verbatim)

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| test                      | PASS         |
| shim process-per-user     | FAIL (101)   |
| cargo-deny                | PASS         |
| static builds             | PASS         |
+---------------------------+--------------+

The shim process-per-user row: 184 passed, 1 failed (review_r4_taller_widening_keeps_the_rows_it_pulls_into_view, by design), 20 ignored. x86_64 static 21,300,080 B cap PASS.

Verdict: HOLD — P0=0, P1=1, P2=0, P3=2 (notes).

# Break-it delta review r4 — origin/process-per-user dccf8699c (#205; D270) Reviewer: Claude (independent). Branch `review-process-per-user-r4` at 3f08dd72a. Tests: `crates/infraternal-shim/tests/unit/review_r4.rs` (wired from `src/terminal.rs`) and `review_r4_native.rs` (wired from `src/terminal_native.rs`), both process-per-user only. Logs: `~/.cache/codex-scratch/review-process-per-user-r4/`. Base for attribution: 6735c6bdc. ## PPU-R4-1 — P1 — widening to a taller window blanks rows that were on screen (new in 9f46c7260) - `trimHistoryForCols` (build-vt PageList patch) runs at the top of `PageList.resize`, before `min_max_size` is recomputed for the new geometry and before the `!reflow` branch. It compares the widened size of the whole list (active rows included) with `maxSize()` of the old geometry and treats every history row as droppable. A taller resize then has no history to pull into view, so the top of the new screen stays blank where the reference shows lines. - Failing test `review_r4_taller_widening_keeps_the_rows_it_pulls_into_view` (70-cell lines, one row at every width, so a resize to `rows` needs exactly `rows - 24` history rows). Head (`r4-6.log`): share 65536 80x24->100x30: history 37 -> 0 (needs 6), screen difference 8 share 65536 80x24->133x40: history 37 -> 0 (needs 16), screen difference 7 share 65536 80x24->200x50: history 37 -> 0 (needs 26), screen difference 7 share 307200 80x24->400x100: history 167 -> 0 (needs 76), screen difference 6 share 670720 80x24->400x100: history 400 -> 0 (needs 76), screen difference 7 share 670720 80x24->1000x40: history 400 -> 0 (needs 16), screen difference 7 Base 6735c6bdc, same test (`r4-6-base.log`): 64 KiB share keeps 31/21/11 rows at 100x30/133x40/200x50, screen difference 0 (base then aborts at larger shares = PPU-R3-1). - 64 KiB is a 1000-session share, 655 KiB a 100-session share. Recent output vanishes from the top of the screen when the window is enlarged; every later repaint carries the blanks. 2 MiB and 6 MiB shares stay exact. - Content sweep (ignored test `review_r4_widening_after_history_drop_is_exact_and_not_refused`, `r4-widen.log`): 26 failures, all with a taller target (133x40, 400x100, 1000x40), across plain/styles/graphemes/links, with and without DECAWM (no-reflow path). Every same-height widen (133x24, 400x24) is exact. No refusal or resize error anywhere. - Fix direction (not done): bound the trim by maxSize for the new geometry and never erase the newest `new_rows - old_rows` history rows the resize pulls into view. ## Checked, not broken - Freed pages after partial failure, every path (`review_r4_refusal_at_any_point_of_any_operation_keeps_engine_sound`, ignored for gate time, ~4 min): 26 operations x 248 refusal points (512 B steps to 64 KiB, 8 KiB steps to 1 MiB) = 6,448 forked cases; each lifts the refusal, then 300 lines, both snapshots, history read, resize, ED 2/3, drop. ReleaseSafe native. 0 aborts, 0 signals. Refusals landed: narrow reflow 120 retired, wider 148, alt-screen resize 162, scroll region+resize 130, graphemes-then-wider 136; in-process: alt enter/fill 142, 47/1047/1048 109, ED 3 mid-output 112, scroll region 112, distinct styles 141, distinct links 248, graphemes 143, save/restore cursor 120. Shorter, taller, ED, RIS, DECSTR, IL/DL, SU/SD, ICH/DCH/ECH, DECALN, tabs, prompt marks allocate nothing (no refusal possible). - LZ4 in release: patched decoder built ReleaseFast and ReleaseSafe; 3,000,000 corrupted inputs (flips, truncation, extension, garbage; output exact/short/oversized by <=4 KiB), input and output flush against PROT_NONE guard pages: no fault in either mode (217,856 decoded, 2,782,144 rejected). ReleaseFast keeps the "index out of bounds" panic path (1 vs 0 unpatched), so @setRuntimeSafety(true) takes effect. Note: it bounds writes only to the slice given; a node read after free passes a garbage slice, so the real protection is d7055573d. Harness: `~/.cache/codex-scratch/review-process-per-user-r4/lz4fuzz/fuzz.zig`. - Floor/pool: shrinking a 250x80 full-screen window, 10 sessions at full shares: exact, pool 70.2 -> 72.7 of 80 MiB. Half the sessions bouncing 250x80 <-> 80x24 with alt screen, 3 rounds: pool peak 70.5 MiB, never over limit, nobody refused. Extreme geometries (65535x65535, 10000x5000, 65535x1, 1x65535, 1x1, 250x180): no abort, refused resizes recover, neighbour exact, pool back exactly to the neighbour's charge. Floors: 80x24 272 KiB, 120x40 376 KiB, 200x50 584 KiB, 250x80 1000 KiB, 250x180 1.89 MiB, 400x200 2 MiB (cap). - Default build: every build-vt edit of the delta is inside `if [[ -n "$shared_host" ]]`, memory.zig is copied only there, snapshot.zig unchanged, Rust changes cfg-gated. Default native sources are identical (cache key changes only via build-vt's hash). ## P3 notes (not counted) - Pool is clamped to >= 80 MiB even when cgroup memory.max is smaller (OOM-kill before refusal); only the leaf cgroup's memory.max is read (parent slice limits ignored), no cgroup v1, read once at start. - Floors are not admitted against the machine: 1000 sessions at 250x80 hold ~976 MiB of floors outside the pool (2 GiB at the cap). Real screen cost, not extra allocation, but the 1/32 pool is not a host bound. ## Previous findings PPU-R3-1 fixed (no abort at any share; refusal sweep clean). PPU-R3-2 fixed (floors cover screens; 100 laptop sessions pass). PPU-R3-3 fixed (gate row runs feature lib tests). ## Verdict HOLD. P0=0, P1=1 (PPU-R4-1), P2=0, P3=2 notes. ## Gate (`scripts/verify fast` on review-process-per-user-r4 3f08dd72a, verbatim) ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | test | PASS | | shim process-per-user | FAIL (101) | | cargo-deny | PASS | | static builds | PASS | +---------------------------+--------------+ ``` The shim process-per-user row: 184 passed, 1 failed (review_r4_taller_widening_keeps_the_rows_it_pulls_into_view, by design), 20 ignored. x86_64 static 21,300,080 B cap PASS. **Verdict: HOLD — P0=0, P1=1, P2=0, P3=2 (notes).**
kayg commented 2026-10-17 20:09:08 +00:00
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r4 fix round started (PPU-R4-1). Branch process-per-user, base dccf8699c; cherry-picked the review tests 3f08dd72a as 396fdefa7. Plan: size the pre-widening history drop for the new geometry (cols and rows) and never drop the rows the new screen shows; P3: effective cgroup limit including parents, pool below the minimum on tiny limits, floors-outside-pool documented.

r4 fix round started (PPU-R4-1). Branch `process-per-user`, base dccf8699c; cherry-picked the review tests 3f08dd72a as 396fdefa7. Plan: size the pre-widening history drop for the new geometry (cols and rows) and never drop the rows the new screen shows; P3: effective cgroup limit including parents, pool below the minimum on tiny limits, floors-outside-pool documented.
kayg commented 2026-10-19 15:34:20 +00:00
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Start: branch user-screen-pool, base origin/dev a615c03664. Worktree was clean. Reading #205 showed the prior process-per-user r4 fix round still had an unresolved widening/history correctness finding; I will account for that before integrating the D310 pool.

Start: branch `user-screen-pool`, base `origin/dev` a615c036645c9eb6d305b7d0a264a9e593180736. Worktree was clean. Reading #205 showed the prior process-per-user r4 fix round still had an unresolved widening/history correctness finding; I will account for that before integrating the D310 pool.
kayg commented 2026-10-19 15:34:50 +00:00
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Finding (code location, before build): the clean origin/dev base a615c036 has only one shim process per terminal. crates/infraternal-shim/src/session.rs owns a Terminal; src/terminal.rs:5-7,42-74 sets a fixed 17 MiB Ghostty scrollback budget and src/terminal_native.rs:41-70 creates its native engine. The per-session output ring is src/ring.rs (separate from VT screen/scrollback).

The D270 per-person host prototype is on origin/process-per-user at dccf8699cd, not on this job's required origin/dev base. It lives in crates/infraternal-shim/src/user_host.rs (one reactor hosting sessions; HOST_HISTORY_BYTES, session floors and host-start memory calculation near lines 45-63 and 892-930), with per-allocation accounting in src/terminal_memory.rs and the Ghostty allocator bridge in native/memory.zig. The previous run's last issue comment starts the r4 fix but leaves the taller-widening/history P1 unresolved. No code has been built or changed yet.

Finding (code location, before build): the clean `origin/dev` base a615c036 has only one shim process per terminal. `crates/infraternal-shim/src/session.rs` owns a `Terminal`; `src/terminal.rs:5-7,42-74` sets a fixed 17 MiB Ghostty scrollback budget and `src/terminal_native.rs:41-70` creates its native engine. The per-session output ring is `src/ring.rs` (separate from VT screen/scrollback). The D270 per-person host prototype is on `origin/process-per-user` at dccf8699cd4bdbc55c7effa36d85ebbde110499a, not on this job's required `origin/dev` base. It lives in `crates/infraternal-shim/src/user_host.rs` (one reactor hosting sessions; `HOST_HISTORY_BYTES`, session floors and host-start memory calculation near lines 45-63 and 892-930), with per-allocation accounting in `src/terminal_memory.rs` and the Ghostty allocator bridge in `native/memory.zig`. The previous run's last issue comment starts the r4 fix but leaves the taller-widening/history P1 unresolved. No code has been built or changed yet.
kayg commented 2026-10-19 15:36:15 +00:00
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Finding / integration choice: the D270 host implementation needed for cross-session accounting is absent from the required origin/dev base. A budget added only to the current per-session shim cannot enforce a per-person cap, so I will merge the already-reviewed-history prototype from origin/process-per-user (head dccf8699) into this dev-based branch, retain its atomic commit ancestry, and keep its research feature opt-in per D270. git merge-tree predicts six content conflicts: shim Cargo/build/lib, CLI main, scripts/build-vt, and scripts/verify.d/rust.sh. The old branch's final review still has PPU-R4-1 (taller resize drops visible rows); I will add/run its failing regression first and fix it before D310 work.

Finding / integration choice: the D270 host implementation needed for cross-session accounting is absent from the required `origin/dev` base. A budget added only to the current per-session shim cannot enforce a per-person cap, so I will merge the already-reviewed-history prototype from `origin/process-per-user` (head dccf8699) into this dev-based branch, retain its atomic commit ancestry, and keep its research feature opt-in per D270. `git merge-tree` predicts six content conflicts: shim Cargo/build/lib, CLI main, `scripts/build-vt`, and `scripts/verify.d/rust.sh`. The old branch's final review still has PPU-R4-1 (taller resize drops visible rows); I will add/run its failing regression first and fix it before D310 work.
kayg commented 2026-10-19 15:47:00 +00:00
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Finding (PPU-R4-1 confirmed on the merged prototype before its fix): the new regression at crates/infraternal-shim/tests/unit/user_screen_pool_resize.rs fails for a 64 KiB history share, 80x24 → 133x40. Before resize it holds 37 rows; the taller viewport needs 16, but the native trim drops all history and the visible-state oracle reports difference 7. This reproduces the prior review finding in 0.11 s. The generated trimHistoryForCols patch is in scripts/build-vt. Raw test output: r4-regression-before.log.

Finding (PPU-R4-1 confirmed on the merged prototype before its fix): the new regression at `crates/infraternal-shim/tests/unit/user_screen_pool_resize.rs` fails for a 64 KiB history share, 80x24 → 133x40. Before resize it holds 37 rows; the taller viewport needs 16, but the native trim drops all history and the visible-state oracle reports difference 7. This reproduces the prior review finding in 0.11 s. The generated `trimHistoryForCols` patch is in `scripts/build-vt`. Raw test output: [r4-regression-before.log](https://git.kayg.org/attachments/9448fa59-3510-4763-87e7-f53b3f2a882a).
kayg commented 2026-10-19 16:08:07 +00:00
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Finding (D310 accounting gap): user_host.rs currently sizes the pool from MemTotal; terminal_memory.rs charges native bytes only above each floor, and Ring::allocated_bytes() is not charged to the shared budget. At 300 sessions, the 256 KiB base floors alone total 75 MiB outside the 80 MiB pool, allowing at least 155 MiB before output-ring allocations. The implementation now moves floors, native excess and allocated ring capacity under one cap and derives the cap from MemAvailable bounded by the cgroup limit.

Finding (D310 accounting gap): `user_host.rs` currently sizes the pool from `MemTotal`; `terminal_memory.rs` charges native bytes only above each floor, and `Ring::allocated_bytes()` is not charged to the shared budget. At 300 sessions, the 256 KiB base floors alone total 75 MiB outside the 80 MiB pool, allowing at least 155 MiB before output-ring allocations. The implementation now moves floors, native excess and allocated ring capacity under one cap and derives the cap from `MemAvailable` bounded by the cgroup limit.
kayg commented 2026-10-19 16:21:35 +00:00
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Finding: four pre-D310 scale fixtures encoded the old 80 MiB shared-excess model while leaving session floors outside that amount. Under an 80 MiB total cap, the 100-session 200x50 case admitted only 36/100 terminals before floor growth stopped; the 300-session 200x50 fixture also hit the cap during admission. Updated maximum-scale fixtures now use the D310 512 MiB ceiling, and the small-pool admission test checks the refusal surface explicitly. The 8-session fairness fixture also reduces its extra allowance to 256 KiB so it still exercises recycling.

Finding: four pre-D310 scale fixtures encoded the old 80 MiB shared-excess model while leaving session floors outside that amount. Under an 80 MiB total cap, the 100-session 200x50 case admitted only 36/100 terminals before floor growth stopped; the 300-session 200x50 fixture also hit the cap during admission. Updated maximum-scale fixtures now use the D310 512 MiB ceiling, and the small-pool admission test checks the refusal surface explicitly. The 8-session fairness fixture also reduces its extra allowance to 256 KiB so it still exercises recycling.
kayg commented 2026-10-19 16:22:35 +00:00
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Finding: initial screen floors were previously raised only when a lazy terminal materialized, after its PTY and session had already been admitted. A startup geometry such as 200x50 therefore had no protected screen reservation at open time. Session::new_host now asks the native layout helper for the geometry floor and reserves it before socket/PTY creation; terminal materialization reuses that reservation.

Finding: initial screen floors were previously raised only when a lazy terminal materialized, after its PTY and session had already been admitted. A startup geometry such as 200x50 therefore had no protected screen reservation at open time. `Session::new_host` now asks the native layout helper for the geometry floor and reserves it before socket/PTY creation; terminal materialization reuses that reservation.
kayg commented 2026-10-19 16:35:33 +00:00
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Finding: a pool-full session open must not abort startup and drop sessions admitted earlier in the batch. run_host_accounted now admits configs individually, routes the pool-full error through the existing session-open stderr path, and keeps admitted sessions in the reactor (crates/infraternal-shim/src/user_host.rs:867-990). The focused regression asserts one admitted live session, one refused session with the pool message, and working terminal/ring output (user_host.rs:1186-1226); the test is queued for execution.

Finding: a pool-full session open must not abort startup and drop sessions admitted earlier in the batch. `run_host_accounted` now admits configs individually, routes the pool-full error through the existing session-open stderr path, and keeps admitted sessions in the reactor (`crates/infraternal-shim/src/user_host.rs:867-990`). The focused regression asserts one admitted live session, one refused session with the pool message, and working terminal/ring output (`user_host.rs:1186-1226`); the test is queued for execution.
kayg commented 2026-10-19 16:38:42 +00:00
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Finding: the first refusal fixture cap was 512 KiB, equal to two minimum 256 KiB session floors; because rings are lazy, both opens fit. Tightened the fixture to 257 KiB so the first session retains 1 KiB for output history and the second 256 KiB floor is refused. The expected message now names 257 KiB. The prior focused run was cancelled before its queued build started; no test result was produced.

Finding: the first refusal fixture cap was 512 KiB, equal to two minimum 256 KiB session floors; because rings are lazy, both opens fit. Tightened the fixture to 257 KiB so the first session retains 1 KiB for output history and the second 256 KiB floor is refused. The expected message now names 257 KiB. The prior focused run was cancelled before its queued build started; no test result was produced.
kayg commented 2026-10-19 17:00:38 +00:00
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Finding: the 257 KiB refusal fixture was below the actual 80x24 geometry floor, so the first session was rejected and the test failed before exercising partial admission (0 passed, 1 failed). Raw output: d310-unit.log. The next fixture will derive its cap from floor_for_geometry(80, 24, 256 KiB), leaving 1 KiB for ring growth while making the next same-sized floor refuse.

Finding: the 257 KiB refusal fixture was below the actual 80x24 geometry floor, so the first session was rejected and the test failed before exercising partial admission (0 passed, 1 failed). Raw output: [d310-unit.log](https://git.kayg.org/attachments/e84af527-2654-4a10-8f45-25dab71d4a67). The next fixture will derive its cap from `floor_for_geometry(80, 24, 256 KiB)`, leaving 1 KiB for ring growth while making the next same-sized floor refuse.
kayg commented 2026-10-19 17:01:09 +00:00
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Step: corrected the full-pool test to derive its cap from the 80x24 geometry floor plus 1 KiB of ring headroom. Result: 1 passed, 0 failed; the first PTY stayed live and readable, and the second open returned the expected pool-full message. Receipt: d310-unit.log.

Step: corrected the full-pool test to derive its cap from the 80x24 geometry floor plus 1 KiB of ring headroom. Result: 1 passed, 0 failed; the first PTY stayed live and readable, and the second open returned the expected pool-full message. Receipt: [d310-unit.log](https://git.kayg.org/attachments/56b9c65c-48fd-4ef3-b184-f185816e4566).
kayg commented 2026-10-19 17:01:44 +00:00
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Step: D310 pool tests passed on the merged host runtime: 26 passed, 0 failed, 1 ignored. This includes the clamp examples, full-pool refusal with a live sibling, ring reuse, and the 20,000-operation open/write/close accounting property. Receipt: d310-user-host-tests.log.

Step: D310 pool tests passed on the merged host runtime: 26 passed, 0 failed, 1 ignored. This includes the clamp examples, full-pool refusal with a live sibling, ring reuse, and the 20,000-operation open/write/close accounting property. Receipt: [d310-user-host-tests.log](https://git.kayg.org/attachments/f8207f6d-4d80-4839-b99e-d26e76d2e0d9).
kayg commented 2026-10-19 17:05:27 +00:00
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Finding: full shim run has one stale tightness assertion after floors moved inside the host cap. With extra_limit=524288 bytes, the eight-terminal accounting case peaks at 377065 bytes (host.used), leaving 147223 bytes; the test's 64 KiB proximity assertion fails although admission/recycling stays under cap and exact snapshots pass. Full receipt (184 passed, 1 failed, 18 ignored): shim-lib.log. I’m checking the native page allocation quantum before adjusting only the test’s binding tolerance.

Finding: full shim run has one stale tightness assertion after floors moved inside the host cap. With `extra_limit=524288` bytes, the eight-terminal accounting case peaks at `377065` bytes (`host.used`), leaving `147223` bytes; the test's 64 KiB proximity assertion fails although admission/recycling stays under cap and exact snapshots pass. Full receipt (184 passed, 1 failed, 18 ignored): [shim-lib.log](https://git.kayg.org/attachments/d3d58430-da81-4fb1-9c77-c39c52c73fdc). I’m checking the native page allocation quantum before adjusting only the test’s binding tolerance.
kayg commented 2026-10-19 17:06:26 +00:00
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Step: relaxed the shared-pool pressure fixture from a 64 KiB proximity check to a two-thirds-use check because native screen allocations are whole items. The recorded peak was 377065/524288 B (71.9%); hard-cap and exact-state assertions remain. Focused rerun: 1 passed, 0 failed. Receipt: d310-host-budget-regression.log.

Step: relaxed the shared-pool pressure fixture from a 64 KiB proximity check to a two-thirds-use check because native screen allocations are whole items. The recorded peak was 377065/524288 B (71.9%); hard-cap and exact-state assertions remain. Focused rerun: 1 passed, 0 failed. Receipt: [d310-host-budget-regression.log](https://git.kayg.org/attachments/c35e7826-bcaa-4fd7-9a49-cb1c38818afd).
kayg commented 2026-10-19 17:09:42 +00:00
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Step: full process-per-user shim library suite passed after the fixture correction: 185 passed, 0 failed, 18 ignored, 186.34 s (single test thread). Receipt: shim-lib.log.

Step: full process-per-user shim library suite passed after the fixture correction: 185 passed, 0 failed, 18 ignored, 186.34 s (single test thread). Receipt: [shim-lib.log](https://git.kayg.org/attachments/12501df0-ee28-49ad-9bca-a93d47aa1f2a).
kayg commented 2026-10-19 17:12:35 +00:00
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Finding: real-PTY CLI integration run had 1 pass and 1 failure. session_exit_reconnect_writer_ack_resize_and_replay_keep_siblings_alive passed; ownership_receipt_is_private_numeric_and_never_overwritten failed its assertion that every ownership receipt field except kind is a JSON integer. Receipt: user-host-integration.log. I’m inspecting the generated row shape before deciding whether the regression is in receipt output or the fixture assertion.

Finding: real-PTY CLI integration run had 1 pass and 1 failure. `session_exit_reconnect_writer_ack_resize_and_replay_keep_siblings_alive` passed; `ownership_receipt_is_private_numeric_and_never_overwritten` failed its assertion that every ownership receipt field except `kind` is a JSON integer. Receipt: [user-host-integration.log](https://git.kayg.org/attachments/985fa58b-b093-42ec-86a5-ab0ee6218e64). I’m inspecting the generated row shape before deciding whether the regression is in receipt output or the fixture assertion.
kayg commented 2026-10-19 17:15:56 +00:00
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Step: updated the ownership receipt integration assertion to allow the existing nested reactor object while verifying each contained field is numeric. Real-PTY integration: 2 passed, 0 failed (0.04 s). Receipt: user-host-integration.log.

Step: updated the ownership receipt integration assertion to allow the existing nested `reactor` object while verifying each contained field is numeric. Real-PTY integration: 2 passed, 0 failed (0.04 s). Receipt: [user-host-integration.log](https://git.kayg.org/attachments/6f47c59b-23b6-45f7-bee7-69aa62143d03).
kayg commented 2026-10-19 17:44:56 +00:00
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Step: scripts/verify iterate passed. Rust table: fmt, VT native fmt, CLI plugin compile-out, clippy, SSH runtime helper, tests, SSH inode reuse, shim process-per-user, cargo-deny all PASS; process-per-user shim suite was 185 passed, 0 failed, 18 ignored. TypeScript protocol tests: 37 passed. Full gate receipt: verify-iterate.log.

Step: `scripts/verify iterate` passed. Rust table: fmt, VT native fmt, CLI plugin compile-out, clippy, SSH runtime helper, tests, SSH inode reuse, shim process-per-user, cargo-deny all PASS; process-per-user shim suite was 185 passed, 0 failed, 18 ignored. TypeScript protocol tests: 37 passed. Full gate receipt: [verify-iterate.log](https://git.kayg.org/attachments/2af75afe-6dc1-48f3-b70b-3408f8b27b22).
kayg commented 2026-10-19 17:46:38 +00:00
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Step: committed ring capacity accounting as 60312e733. The full process-per-user suite passed (185 passed, 0 failed, 18 ignored); the 20,000-operation property keeps total pool use within the cap and returns usage to zero after close.

Step: committed ring capacity accounting as `60312e733`. The full process-per-user suite passed (185 passed, 0 failed, 18 ignored); the 20,000-operation property keeps total pool use within the cap and returns usage to zero after close.
kayg commented 2026-10-19 17:47:25 +00:00
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Step: committed shared native screen-floor leases as 1c62db13e. Feature-enabled shim tests passed (185 passed, 0 failed, 18 ignored); iterate’s full clippy and Rust checks passed.

Step: committed shared native screen-floor leases as `1c62db13e`. Feature-enabled shim tests passed (185 passed, 0 failed, 18 ignored); iterate’s full clippy and Rust checks passed.
kayg commented 2026-10-19 17:47:37 +00:00
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Step: committed usable-memory sizing, pre-PTY floor reservation, equal per-session shares, and partial pool refusal as 4381c7f4b. Tests: process-per-user shim 185 passed; real-PTY CLI integration 2 passed; pool property covered 20,000 open/write/close operations without exceeding its cap.

Step: committed usable-memory sizing, pre-PTY floor reservation, equal per-session shares, and partial pool refusal as `4381c7f4b`. Tests: process-per-user shim 185 passed; real-PTY CLI integration 2 passed; pool property covered 20,000 open/write/close operations without exceeding its cap.
kayg commented 2026-10-19 17:47:47 +00:00
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Step: committed shared-pool test fixture updates as b07ffb2d2. The focused pool-boundary regression passed (1/1), then the complete process-per-user shim suite passed (185 passed, 0 failed, 18 ignored), including 300/400-session geometry and noisy-neighbour exactness cases.

Step: committed shared-pool test fixture updates as `b07ffb2d2`. The focused pool-boundary regression passed (1/1), then the complete process-per-user shim suite passed (185 passed, 0 failed, 18 ignored), including 300/400-session geometry and noisy-neighbour exactness cases.
kayg commented 2026-10-19 17:47:56 +00:00
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Step: committed structured ownership receipt validation as ee26f7776. Real-PTY CLI integration passed (2 passed, 0 failed); the numeric ownership and sibling-session lifecycle cases both pass.

Step: committed structured ownership receipt validation as `ee26f7776`. Real-PTY CLI integration passed (2 passed, 0 failed); the numeric ownership and sibling-session lifecycle cases both pass.
kayg commented 2026-10-19 17:48:11 +00:00
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Step: committed the taller-viewport history fix and native regression as 11d7dd030. The before-fix regression was attached earlier; after the fix it passed in the full shim suite (185 passed, 0 failed, 18 ignored), including exact native state comparison.

Step: committed the taller-viewport history fix and native regression as `11d7dd030`. The before-fix regression was attached earlier; after the fix it passed in the full shim suite (185 passed, 0 failed, 18 ignored), including exact native state comparison.
kayg commented 2026-10-19 17:57:17 +00:00
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Perf VM load attempt 1 stopped after the 50-session sample because the local harness counted the stage-format receipt header as a session row. The host emitted 50 valid ownership rows: each charged 1,531,683 bytes, total 76,584,150 of the 226,281,984-byte pool. VM reports SwapTotal=0; the host and shell processes were gone after cleanup. I’m fixing receipt filtering and rerunning 50/200/500 with a fresh evidence directory. No repository changes; HEAD 11d7dd0300.

Evidence: run log, ownership receipt.

Perf VM load attempt 1 stopped after the 50-session sample because the local harness counted the `stage-format` receipt header as a session row. The host emitted 50 valid ownership rows: each charged 1,531,683 bytes, total 76,584,150 of the 226,281,984-byte pool. VM reports SwapTotal=0; the host and shell processes were gone after cleanup. I’m fixing receipt filtering and rerunning 50/200/500 with a fresh evidence directory. No repository changes; HEAD 11d7dd03009ece35137f934abc4e2db3452cdcb4. Evidence: [run log](https://git.kayg.org/attachments/8560c560-0267-4688-b880-3850d489a4aa), [ownership receipt](https://git.kayg.org/attachments/24f048d8-a790-4eaa-87f0-4ed5ae623827).
kayg commented 2026-10-19 18:00:01 +00:00
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D310 load run completed on infraternal-perf-test (4 CPUs, kernel 6.12.111+deb13-amd64), 5 s idle and 20 s output per count, 20 output rounds/session. Load averages (1/5/15 min) were 0/0/0 at start and end for 50 and 200; 2.48/0.51/0.17 → 1.63/0.47/0.16 for 500. SwapTotal was 0; system, daemon and shells reported zero swap before/after. All sessions were admitted.

Count | pool used/cap (MiB) | pool/session | daemon RSS total/session | shell RSS total/session | host CPU idle/avg/worst | host+shell CPU idle/avg/worst
50 | 73.04/216.47 | 1.461 MiB | 63.72/1.274 MiB | 277.04/5.541 MiB | 0/2.67/35.43% | 0/11.01/177.16%
200 | 75.89/215.19 | 0.379 MiB | 86.89/0.434 MiB | 1106.95/5.535 MiB | 0/6.31/52.87% | 0/13.56/105.75%
500 | 150.75/214.80 | 0.301 MiB | 92.21/0.184 MiB | 2766.84/5.534 MiB | 0/19.07/79.29% | 0/32.63/93.56%

Output bytes were 4,135,642 / 16,549,693 / 41,378,293 respectively. Complete per-run samples and ownership receipts: perf evidence. HEAD 11d7dd0300; repository source unchanged during runs.

D310 load run completed on infraternal-perf-test (4 CPUs, kernel 6.12.111+deb13-amd64), 5 s idle and 20 s output per count, 20 output rounds/session. Load averages (1/5/15 min) were 0/0/0 at start and end for 50 and 200; 2.48/0.51/0.17 → 1.63/0.47/0.16 for 500. SwapTotal was 0; system, daemon and shells reported zero swap before/after. All sessions were admitted. Count | pool used/cap (MiB) | pool/session | daemon RSS total/session | shell RSS total/session | host CPU idle/avg/worst | host+shell CPU idle/avg/worst 50 | 73.04/216.47 | 1.461 MiB | 63.72/1.274 MiB | 277.04/5.541 MiB | 0/2.67/35.43% | 0/11.01/177.16% 200 | 75.89/215.19 | 0.379 MiB | 86.89/0.434 MiB | 1106.95/5.535 MiB | 0/6.31/52.87% | 0/13.56/105.75% 500 | 150.75/214.80 | 0.301 MiB | 92.21/0.184 MiB | 2766.84/5.534 MiB | 0/19.07/79.29% | 0/32.63/93.56% Output bytes were 4,135,642 / 16,549,693 / 41,378,293 respectively. Complete per-run samples and ownership receipts: [perf evidence](https://git.kayg.org/attachments/d72f6792-5e17-4990-930d-ad46a759b11a). HEAD 11d7dd03009ece35137f934abc4e2db3452cdcb4; repository source unchanged during runs.
kayg commented 2026-10-19 18:47:49 +00:00
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Finished #205. Branch user-screen-pool is pushed to origin/user-screen-pool at 11d7dd03009ece35137f934abc4e2db3452cdcb4; the worktree is clean.

Backend self-review covered the D310 clamp and cgroup inputs, per-session floor reservation before PTY spawn, byte-cap accounting for native allocations and ring capacity, oldest-history trimming and equal per-session shares, existing session-open refusal output, and shell-process separation. No UI changes or new dependencies were added.

scripts/verify fast completed. Its full output is attached verbatim: final-fast.log. The final TypeScript protocol test output was:

 37 pass
 0 fail
 34463 expect() calls
Ran 37 tests across 10 files. [2.70s]

The process-per-user shim suite passed 185 tests, with 18 ignored. Both static builds passed their exact ceilings. The stripped static x86_64 binary is 21,344,304 bytes at base and branch, delta +0; aarch64 is 19,535,600 bytes. Size receipt.

Perf VM load results (infraternal-perf-test, 4 CPUs, kernel 6.12.111+deb13-amd64; 5 s idle + 20 s active, 20 output rounds/session):

Sessions Pool used/cap MiB Pool MiB/session Daemon RSS total/session MiB Shell RSS total/session MiB Host CPU idle/avg/worst % Host+shell CPU idle/avg/worst %
50 73.04/216.47 1.461 63.72/1.274 277.04/5.541 0/2.67/35.43 0/11.01/177.16
200 75.89/215.19 0.379 86.89/0.434 1106.95/5.535 0/6.31/52.87 0/13.56/105.75
500 150.75/214.80 0.301 92.21/0.184 2766.84/5.534 0/19.07/79.29 0/32.63/93.56

All sessions were admitted. SwapTotal was 0 and system, daemon, and shell swap use remained 0. Load averages (1/5/15 min) were 0/0/0 at start and end for 50 and 200; at 500 they went from 2.48/0.51/0.17 to 1.63/0.47/0.16. Output totals were 4,135,642 / 16,549,693 / 41,378,293 bytes. Full per-run samples and ownership receipts: perf evidence.

Finished #205. Branch `user-screen-pool` is pushed to `origin/user-screen-pool` at `11d7dd03009ece35137f934abc4e2db3452cdcb4`; the worktree is clean. Backend self-review covered the D310 clamp and cgroup inputs, per-session floor reservation before PTY spawn, byte-cap accounting for native allocations and ring capacity, oldest-history trimming and equal per-session shares, existing session-open refusal output, and shell-process separation. No UI changes or new dependencies were added. `scripts/verify fast` completed. Its full output is attached verbatim: [final-fast.log](https://git.kayg.org/attachments/80ad47e2-0a4c-40b8-a9b1-838f1c45b3f6). The final TypeScript protocol test output was: ```text 37 pass 0 fail 34463 expect() calls Ran 37 tests across 10 files. [2.70s] ``` The process-per-user shim suite passed 185 tests, with 18 ignored. Both static builds passed their exact ceilings. The stripped static x86_64 binary is 21,344,304 bytes at base and branch, delta +0; aarch64 is 19,535,600 bytes. [Size receipt](https://git.kayg.org/attachments/7ce41809-e7f6-42f8-af6c-c266c5e0bad6). Perf VM load results (`infraternal-perf-test`, 4 CPUs, kernel 6.12.111+deb13-amd64; 5 s idle + 20 s active, 20 output rounds/session): | Sessions | Pool used/cap MiB | Pool MiB/session | Daemon RSS total/session MiB | Shell RSS total/session MiB | Host CPU idle/avg/worst % | Host+shell CPU idle/avg/worst % | | ---: | ---: | ---: | ---: | ---: | ---: | ---: | | 50 | 73.04/216.47 | 1.461 | 63.72/1.274 | 277.04/5.541 | 0/2.67/35.43 | 0/11.01/177.16 | | 200 | 75.89/215.19 | 0.379 | 86.89/0.434 | 1106.95/5.535 | 0/6.31/52.87 | 0/13.56/105.75 | | 500 | 150.75/214.80 | 0.301 | 92.21/0.184 | 2766.84/5.534 | 0/19.07/79.29 | 0/32.63/93.56 | All sessions were admitted. SwapTotal was 0 and system, daemon, and shell swap use remained 0. Load averages (1/5/15 min) were 0/0/0 at start and end for 50 and 200; at 500 they went from 2.48/0.51/0.17 to 1.63/0.47/0.16. Output totals were 4,135,642 / 16,549,693 / 41,378,293 bytes. Full per-run samples and ownership receipts: [perf evidence](https://git.kayg.org/attachments/d72f6792-5e17-4990-930d-ad46a759b11a).
kayg commented 2026-10-19 18:50:31 +00:00
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Break-it review start: branch review-user-screen-pool, base origin/user-screen-pool 11d7dd03009ece35137f934abc4e2db3452cdcb4 (issue #205 has no parent). I read the full issue history; reviewing D310 accounting, refusal, fairness, lifetime release, and default release inclusion. No product changes planned.

Break-it review start: branch `review-user-screen-pool`, base `origin/user-screen-pool` `11d7dd03009ece35137f934abc4e2db3452cdcb4` (issue #205 has no parent). I read the full issue history; reviewing D310 accounting, refusal, fairness, lifetime release, and default release inclusion. No product changes planned.
kayg commented 2026-10-19 19:20:19 +00:00
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P1 finding — zero ring capacity stalls existing PTYs (D310).

A real-PTY test with pool cap equal to one session floor (272 KiB) confirms the next session is refused with terminal memory for this user is full (272 KiB); close a session. The live shell then writes 29 response bytes. After Session::step(POLLIN, read_pty=true), all 29 remain unread; the review test fails at the zero-ring assertion. See crates/infraternal-shim/src/user_host.rs:751 for the read limit min(..., self.config.ring_capacity), and the new test near line 1227. When startup floors consume the pool, run_host_accounted can reduce admitted sessions' ring capacity to zero. This contradicts the claim that refusing a new open leaves existing sessions interactive. Sustained output can eventually backpressure the shell; that consequence follows from the PTY pipe remaining unread.

The review-only test changes no product behavior. Receipt: zero-ring-test-build-host.log

P1 finding — zero ring capacity stalls existing PTYs (D310). A real-PTY test with pool cap equal to one session floor (272 KiB) confirms the next session is refused with `terminal memory for this user is full (272 KiB); close a session`. The live shell then writes 29 response bytes. After `Session::step(POLLIN, read_pty=true)`, all 29 remain unread; the review test fails at the zero-ring assertion. See `crates/infraternal-shim/src/user_host.rs:751` for the read limit `min(..., self.config.ring_capacity)`, and the new test near line 1227. When startup floors consume the pool, `run_host_accounted` can reduce admitted sessions' ring capacity to zero. This contradicts the claim that refusing a new open leaves existing sessions interactive. Sustained output can eventually backpressure the shell; that consequence follows from the PTY pipe remaining unread. The review-only test changes no product behavior. Receipt: [zero-ring-test-build-host.log](https://git.kayg.org/attachments/e4bf8188-c686-40bc-b6ec-31d22671e7d6)
kayg commented 2026-10-19 19:32:59 +00:00
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Step complete: committed review-only test as 7504c44d1. Real-PTY reproduction: 272 KiB pool cap, second open refused with the expected message, and 29 PTY response bytes remain queued after one session step. The test fails at the zero-ring assertion. cargo fmt --all --check and git diff --check pass; clippy reports the same 5 existing lints at this commit and the supplied pre-review head (3 library, 2 property-test casts). Receipts: test, branch clippy, supplied-head clippy.

Step complete: committed review-only test as `7504c44d1`. Real-PTY reproduction: 272 KiB pool cap, second open refused with the expected message, and 29 PTY response bytes remain queued after one session step. The test fails at the zero-ring assertion. `cargo fmt --all --check` and `git diff --check` pass; clippy reports the same 5 existing lints at this commit and the supplied pre-review head (3 library, 2 property-test casts). Receipts: [test](https://git.kayg.org/attachments/6c382037-de32-433c-b331-f529af8acc55), [branch clippy](https://git.kayg.org/attachments/f117d2b3-2a04-49e4-b860-1b8fe266638b), [supplied-head clippy](https://git.kayg.org/attachments/b927fc27-855d-4d3e-a03d-379f70796344).
kayg commented 2026-10-19 20:39:45 +00:00
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Review complete: HOLD — P0=0, P1=1, P2=0.

The review-only commit 7504c44d12eff67b923f36dcbe23ce3b48c50bc7 adds a committed real-PTY regression test; it makes no product-code changes. At a pool cap equal to one 80×24 session floor (272 KiB), opening a second session returns terminal memory for this user is full (272 KiB); close a session. The existing PTY then produces 29 response bytes; after Session::step, all 29 remain unread. step_budget caps the PTY read by config.ring_capacity (crates/infraternal-shim/src/user_host.rs:751), and run_host_accounted reduces every ring to zero when the aggregate floors consume the pool. Thus an existing session stops receiving output at exhaustion. The test and full gate log are attached below.

Scale consequence from the current limits: MAX_SESSIONS=1000 and 272 KiB per floor require 265.625 MiB for floors alone. The earlier #205 perf-VM run measured a 214.80 MiB pool at 500 sessions; at that pool size, the 1000-session floor reservation cannot fit, leaving zero ring budget and requiring refusals after about 808 floor reservations. Earlier author perf-VM results at 50/200/500 sessions were 73.04/75.89/150.75 MiB used, with all sessions admitted. These are the earlier #205 measurements, not a new run. My staged perf-VM test invocation did not execute because systemd-run could not resolve the staged binary path; I make no new performance claim.

I found no additional accounting defect in the reviewed paths: native terminal allocations and ring capacity are charged; close releases charges; the existing 20,000-cycle open/write/close property test returns charges to zero. Detach retains charges because the session remains available for resume. The accounting/release and existing wide-cell, alternate-screen, and hyperlink coverage passed in the workspace suite.

The reported +0-byte size is explained by process-per-user being an explicit nondefault feature, absent from the shipped default release build. The feature-enabled review test is run separately. Fast-gate static artifacts were x86_64 21,344,304 bytes (+0) and aarch64 19,535,600 bytes (+0); aarch64 runtime key-memory checking is unavailable on this x86_64 host. Existing size receipt: https://git.kayg.org/attachments/7ce41809-e7f6-42af-8f6c-c266c5e0bad6.

Feature test evidence: https://git.kayg.org/attachments/6c382037-de32-433c-b331-f529af8acc55
Full scripts/verify fast transcript: https://git.kayg.org/attachments/2f3ad07d-a400-43f1-b222-56c4fde75343

Final scripts/verify fast summary, verbatim:

PT_INTERP: absent; size: 19535600 bytes; cap: 19535600 bytes; delta: +0 bytes
key memory: aarch64-unknown-linux-musl runtime not checked (host x86_64; native execution required)
x86_64-unknown-linux-musl: exact 21344304-byte cap PASS; 21344305 bytes rejected PASS; smaller artifact requires ratchet PASS
aarch64-unknown-linux-musl: exact 19535600-byte cap PASS; 19535601 bytes rejected PASS; smaller artifact requires ratchet PASS
unsupported target: rejected PASS

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| SSH runtime test helper   | PASS         |
| test                      | PASS         |
| SSH inode reuse fixture   | PASS         |
| shim process-per-user     | FAIL (101)   |
| cargo-deny                | PASS         |
| static builds             | PASS         |
+---------------------------+--------------+

The expected nonzero gate exit is solely the new failing regression test: 185 passed; 1 failed; 18 ignored. The review branch is pushed as origin/review-user-screen-pool; head SHA: 7504c44d12eff67b923f36dcbe23ce3b48c50bc7.

Review complete: **HOLD — P0=0, P1=1, P2=0.** The review-only commit `7504c44d12eff67b923f36dcbe23ce3b48c50bc7` adds a committed real-PTY regression test; it makes no product-code changes. At a pool cap equal to one 80×24 session floor (272 KiB), opening a second session returns `terminal memory for this user is full (272 KiB); close a session`. The existing PTY then produces 29 response bytes; after `Session::step`, all 29 remain unread. `step_budget` caps the PTY read by `config.ring_capacity` (`crates/infraternal-shim/src/user_host.rs:751`), and `run_host_accounted` reduces every ring to zero when the aggregate floors consume the pool. Thus an existing session stops receiving output at exhaustion. The test and full gate log are attached below. Scale consequence from the current limits: `MAX_SESSIONS=1000` and 272 KiB per floor require 265.625 MiB for floors alone. The earlier #205 perf-VM run measured a 214.80 MiB pool at 500 sessions; at that pool size, the 1000-session floor reservation cannot fit, leaving zero ring budget and requiring refusals after about 808 floor reservations. Earlier author perf-VM results at 50/200/500 sessions were 73.04/75.89/150.75 MiB used, with all sessions admitted. These are the earlier #205 measurements, not a new run. My staged perf-VM test invocation did not execute because `systemd-run` could not resolve the staged binary path; I make no new performance claim. I found no additional accounting defect in the reviewed paths: native terminal allocations and ring capacity are charged; close releases charges; the existing 20,000-cycle open/write/close property test returns charges to zero. Detach retains charges because the session remains available for resume. The accounting/release and existing wide-cell, alternate-screen, and hyperlink coverage passed in the workspace suite. The reported +0-byte size is explained by `process-per-user` being an explicit nondefault feature, absent from the shipped default release build. The feature-enabled review test is run separately. Fast-gate static artifacts were x86_64 21,344,304 bytes (+0) and aarch64 19,535,600 bytes (+0); aarch64 runtime key-memory checking is unavailable on this x86_64 host. Existing size receipt: https://git.kayg.org/attachments/7ce41809-e7f6-42af-8f6c-c266c5e0bad6. Feature test evidence: https://git.kayg.org/attachments/6c382037-de32-433c-b331-f529af8acc55 Full `scripts/verify fast` transcript: https://git.kayg.org/attachments/2f3ad07d-a400-43f1-b222-56c4fde75343 Final `scripts/verify fast` summary, verbatim: ``` PT_INTERP: absent; size: 19535600 bytes; cap: 19535600 bytes; delta: +0 bytes key memory: aarch64-unknown-linux-musl runtime not checked (host x86_64; native execution required) x86_64-unknown-linux-musl: exact 21344304-byte cap PASS; 21344305 bytes rejected PASS; smaller artifact requires ratchet PASS aarch64-unknown-linux-musl: exact 19535600-byte cap PASS; 19535601 bytes rejected PASS; smaller artifact requires ratchet PASS unsupported target: rejected PASS +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | SSH runtime test helper | PASS | | test | PASS | | SSH inode reuse fixture | PASS | | shim process-per-user | FAIL (101) | | cargo-deny | PASS | | static builds | PASS | +---------------------------+--------------+ ``` The expected nonzero gate exit is solely the new failing regression test: `185 passed; 1 failed; 18 ignored`. The review branch is pushed as `origin/review-user-screen-pool`; head SHA: `7504c44d12eff67b923f36dcbe23ce3b48c50bc7`.
kayg commented 2026-10-19 20:43:18 +00:00
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Start: branch user-screen-pool-r2, base origin/user-screen-pool 11d7dd03009ece35137f934abc4e2db3452cdcb4; worktree was clean. Issue #205 has no parent. I read the current review history; integrating origin/review-user-screen-pool 7504c44d12eff67b923f36dcbe23ce3b48c50bc7, which contains the failing real-PTY regression, before addressing the zero-ring starvation finding.

Start: branch `user-screen-pool-r2`, base `origin/user-screen-pool` `11d7dd03009ece35137f934abc4e2db3452cdcb4`; worktree was clean. Issue #205 has no parent. I read the current review history; integrating `origin/review-user-screen-pool` `7504c44d12eff67b923f36dcbe23ce3b48c50bc7`, which contains the failing real-PTY regression, before addressing the zero-ring starvation finding.
kayg commented 2026-10-19 20:47:03 +00:00
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Finding reproduced on 7504c44d1: the real-PTY test fills a 272 KiB pool, confirms the next open is refused, then leaves all 29 readiness response bytes unread after Session::step. step_budget limits PTY reads to config.ring_capacity at crates/infraternal-shim/src/user_host.rs:751; with a zero share, the screen and absolute ring offset do not advance. Before-fix receipt: zero-ring-before.log.

Finding reproduced on `7504c44d1`: the real-PTY test fills a 272 KiB pool, confirms the next open is refused, then leaves all 29 readiness response bytes unread after `Session::step`. `step_budget` limits PTY reads to `config.ring_capacity` at `crates/infraternal-shim/src/user_host.rs:751`; with a zero share, the screen and absolute ring offset do not advance. Before-fix receipt: [zero-ring-before.log](https://git.kayg.org/attachments/4716636e-7f2b-438d-b393-4152fd269e2b).
kayg commented 2026-10-19 20:53:46 +00:00
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Step complete at e76d5c19a1706b3502468c27d16ac656e5d98c6c: PTY reads now use the bounded read quantum independently of ring retention; the regression asserts the 29-byte screen/replay advance and full drain at a 272 KiB pool cap. Focused test: 1 passed, 0 failed. cargo fmt --all --check and default-feature shim Clippy passed. Receipt: commit-one-regression.log.

Step complete at `e76d5c19a1706b3502468c27d16ac656e5d98c6c`: PTY reads now use the bounded read quantum independently of ring retention; the regression asserts the 29-byte screen/replay advance and full drain at a 272 KiB pool cap. Focused test: 1 passed, 0 failed. `cargo fmt --all --check` and default-feature shim Clippy passed. Receipt: [commit-one-regression.log](https://git.kayg.org/attachments/544ceb9a-8e8d-485b-9595-d396df3e6386).
kayg commented 2026-10-19 20:55:46 +00:00
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Step complete at bcaff061c72156b8d408ec41bc65022acc5b9acc: added the seeded real-PTY property and perf-VM echo probe. The property passed 128 open/write/close operations with two 272 KiB-floor sessions; every typed output was drained, snapshots changed and replay heads advanced. Focused result: 1 passed, 0 failed. Default-feature shim Clippy and cargo fmt --all --check passed; feature-enabled Clippy reports only the five pre-existing findings recorded by review. The release test binary is queued for the required perf-VM measurement.

Step complete at `bcaff061c72156b8d408ec41bc65022acc5b9acc`: added the seeded real-PTY property and perf-VM echo probe. The property passed 128 open/write/close operations with two 272 KiB-floor sessions; every typed output was drained, snapshots changed and replay heads advanced. Focused result: 1 passed, 0 failed. Default-feature shim Clippy and `cargo fmt --all --check` passed; feature-enabled Clippy reports only the five pre-existing findings recorded by review. The release test binary is queued for the required perf-VM measurement.
kayg commented 2026-10-19 20:59:18 +00:00
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Test refinement complete at b0a61c017d529a1e59cddd1328add641b4aa5bef: at each full-pool point in the seeded sequence, the property now exercises every live PTY, checks its screen and replay head, and clears the typed byte. The 128-operation real-PTY test passed (1 passed, 0 failed). Receipt: all-live-ptys-property.log.

Test refinement complete at `b0a61c017d529a1e59cddd1328add641b4aa5bef`: at each full-pool point in the seeded sequence, the property now exercises every live PTY, checks its screen and replay head, and clears the typed byte. The 128-operation real-PTY test passed (1 passed, 0 failed). Receipt: [all-live-ptys-property.log](https://git.kayg.org/attachments/320df795-2352-4000-8e97-adda28610c21).
kayg commented 2026-10-19 21:00:49 +00:00
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Step complete at 61ba3792f6af8dbcd466667cafa2f86e86fbc8ed: the ignored perf probe now includes an attached viewer and measures until a screen snapshot reaches it after zero-capacity replay advances. Feature test compilation and the all-live-session property passed. Default shim Clippy passed; feature-enabled Clippy reports only the five pre-existing findings from review. Optimized test binary build is queued. Receipt: feature-test-compile.log.

Step complete at `61ba3792f6af8dbcd466667cafa2f86e86fbc8ed`: the ignored perf probe now includes an attached viewer and measures until a screen snapshot reaches it after zero-capacity replay advances. Feature test compilation and the all-live-session property passed. Default shim Clippy passed; feature-enabled Clippy reports only the five pre-existing findings from review. Optimized test binary build is queued. Receipt: [feature-test-compile.log](https://git.kayg.org/attachments/78770660-f753-4d74-8cd0-7947b8f2625a).
kayg commented 2026-10-19 21:03:47 +00:00
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Commit history note: I rewrote the two latest commit bodies to include the D310 decision number required by the history contract. The property step is now 1e87326c6 (previously b0a61c017); the viewer-backed echo probe is now 0a58e00e8 (previously 61ba3792f). Source is unchanged. Current HEAD: 0a58e00e8.

Commit history note: I rewrote the two latest commit bodies to include the D310 decision number required by the history contract. The property step is now 1e87326c6 (previously b0a61c017); the viewer-backed echo probe is now 0a58e00e8 (previously 61ba3792f). Source is unchanged. Current HEAD: 0a58e00e8.
kayg commented 2026-10-19 21:08:17 +00:00
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Blocked on shared build capacity: the release process-per-user test harness has waited about 14 minutes in the host-wide build-slot wrapper without starting cargo. The queued job is still alive. The harness, iterate gate, and final fast gate need a free slot; current wrapper process evidence: https://git.kayg.org/attachments/75ee346d-7857-4b55-9475-e5a02b73b00e.

Blocked on shared build capacity: the release `process-per-user` test harness has waited about 14 minutes in the host-wide build-slot wrapper without starting cargo. The queued job is still alive. The harness, iterate gate, and final fast gate need a free slot; current wrapper process evidence: https://git.kayg.org/attachments/75ee346d-7857-4b55-9475-e5a02b73b00e.
kayg commented 2026-10-19 21:12:05 +00:00
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Build-slot finding: the installed wrapper defaults to 3 slots (N=${BUILD_SLOTS:-3}), but the job contract specifies 4 for this 12-core host. Slots 1–3 were occupied and slot 4 unused. I’m setting BUILD_SLOTS=4 for this job’s wrapper calls to use the documented capacity. Evidence: https://git.kayg.org/attachments/e2ab1b1c-99a2-4617-b71f-5c3453b888db.

Build-slot finding: the installed wrapper defaults to 3 slots (`N=${BUILD_SLOTS:-3}`), but the job contract specifies 4 for this 12-core host. Slots 1–3 were occupied and slot 4 unused. I’m setting `BUILD_SLOTS=4` for this job’s wrapper calls to use the documented capacity. Evidence: https://git.kayg.org/attachments/e2ab1b1c-99a2-4617-b71f-5c3453b888db.
kayg commented 2026-10-19 21:14:48 +00:00
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Release test harness built successfully on the documented fourth build slot (initial optimized build: 2m10s). Binary: /home/kayg/.cache/codex-scratch/user-screen-pool-r2/target/release/deps/infraternal_shim-b62f1b029a2aef2b. A cached no-run confirmation completed in 0.07s; receipt: https://git.kayg.org/attachments/941d6fad-fa0f-45d3-86ef-5e0651361fa7. Next: run full-pool echo measurement on perf VM with the staged binary's absolute path.

Release test harness built successfully on the documented fourth build slot (initial optimized build: 2m10s). Binary: `/home/kayg/.cache/codex-scratch/user-screen-pool-r2/target/release/deps/infraternal_shim-b62f1b029a2aef2b`. A cached no-run confirmation completed in 0.07s; receipt: https://git.kayg.org/attachments/941d6fad-fa0f-45d3-86ef-5e0651361fa7. Next: run full-pool echo measurement on perf VM with the staged binary's absolute path.
kayg commented 2026-10-19 21:15:09 +00:00
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Perf harness portability finding: the staged release test executable is dynamically linked to the build host's Nix glibc loader, absent on the perf VM, so it cannot execute there. The absolute path was resolved; failure is the interpreter dependency, before test execution. No timing sample ran. I’m rebuilding the same test harness statically for x86_64 musl. Evidence: https://git.kayg.org/attachments/e92f1316-ad97-4097-b207-2c4a3e4aa058.

Perf harness portability finding: the staged release test executable is dynamically linked to the build host's Nix glibc loader, absent on the perf VM, so it cannot execute there. The absolute path was resolved; failure is the interpreter dependency, before test execution. No timing sample ran. I’m rebuilding the same test harness statically for x86_64 musl. Evidence: https://git.kayg.org/attachments/e92f1316-ad97-4097-b207-2c4a3e4aa058.
kayg commented 2026-10-19 21:18:31 +00:00
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Perf harness portability is fixed by the static musl build. scripts/static-cargo test --locked --package infraternal-shim --features process-per-user --lib --release --no-run --target x86_64-unknown-linux-musl passed in 1m48s. The output is static-pie; test name session::user_host::tests::full_pool_typing_echo_latency is present. SHA-256: 0759f51390a358f263a348985837347a5734cc95ba67dc1fe6c04137e5aede22. Build receipt: https://git.kayg.org/attachments/add64f9e-ab68-40b1-a1d4-a4a8d617d3e1.

Perf harness portability is fixed by the static musl build. `scripts/static-cargo test --locked --package infraternal-shim --features process-per-user --lib --release --no-run --target x86_64-unknown-linux-musl` passed in 1m48s. The output is static-pie; test name `session::user_host::tests::full_pool_typing_echo_latency` is present. SHA-256: `0759f51390a358f263a348985837347a5734cc95ba67dc1fe6c04137e5aede22`. Build receipt: https://git.kayg.org/attachments/add64f9e-ab68-40b1-a1d4-a4a8d617d3e1.
kayg commented 2026-10-19 21:19:04 +00:00
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Perf launch attempt did not execute the test: systemd-run rejects combining --wait with --scope. No timing sample ran; the lock was released. I’m retrying the same static binary in a CPUWeight=10000 scope without --wait. Receipt: https://git.kayg.org/attachments/77e0d71c-7862-4674-9c88-391fce011b67.

Perf launch attempt did not execute the test: `systemd-run` rejects combining `--wait` with `--scope`. No timing sample ran; the lock was released. I’m retrying the same static binary in a CPUWeight=10000 scope without `--wait`. Receipt: https://git.kayg.org/attachments/77e0d71c-7862-4674-9c88-391fce011b67.
kayg commented 2026-10-19 21:19:17 +00:00
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Perf VM timing passed on infraternal-perf-test (x86_64, Linux 6.12.111+deb13-amd64), full pool 557,056/557,056 bytes, 1,000 existing-session typing turns through PTY, VT, zero-capacity replay snapshot and attached viewer: p50 0.0475 ms, p99 0.1440 ms, max 0.2749 ms. Load average was 0.00/1.17/2.11 before and after. The test passed (1 passed, 0 failed); staged binary path was absolute. Receipt: https://git.kayg.org/attachments/21123716-0960-4e35-b80d-18d00ab604d9.

Perf VM timing passed on `infraternal-perf-test` (x86_64, Linux 6.12.111+deb13-amd64), full pool 557,056/557,056 bytes, 1,000 existing-session typing turns through PTY, VT, zero-capacity replay snapshot and attached viewer: p50 0.0475 ms, p99 0.1440 ms, max 0.2749 ms. Load average was 0.00/1.17/2.11 before and after. The test passed (1 passed, 0 failed); staged binary path was absolute. Receipt: https://git.kayg.org/attachments/21123716-0960-4e35-b80d-18d00ab604d9.
kayg commented 2026-10-19 21:42:33 +00:00
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Iterate attempt 1 failed in two rows because my INFRATERNALE_TEST_STATE_ROOT override pointed at /home/kayg/.cache/codex-scratch/user-screen-pool-r2/state; the longer path made Unix-domain socket names exceed SUN_LEN. This caused six existing agent tests and both new shim tests to fail before exercising their assertions. No source change is indicated. I’m rerunning with the repository default short root /home/kayg/.cache/codex-scratch. Full log: https://git.kayg.org/attachments/395441b5-bbbf-4c7e-929d-6d92b379daf6.

Iterate attempt 1 failed in two rows because my `INFRATERNALE_TEST_STATE_ROOT` override pointed at `/home/kayg/.cache/codex-scratch/user-screen-pool-r2/state`; the longer path made Unix-domain socket names exceed `SUN_LEN`. This caused six existing agent tests and both new shim tests to fail before exercising their assertions. No source change is indicated. I’m rerunning with the repository default short root `/home/kayg/.cache/codex-scratch`. Full log: https://git.kayg.org/attachments/395441b5-bbbf-4c7e-929d-6d92b379daf6.
kayg commented 2026-10-19 21:55:55 +00:00
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verify iterate passed on HEAD 0a58e00e8 after removing the overlong test state-root override. The real-PTY review test and the 128-operation random churn property both passed. Gate rows: fmt PASS; VT native fmt PASS; CLI plugin compile-out PASS; clippy PASS; SSH runtime test helper PASS; test PASS; SSH inode reuse fixture PASS; shim process-per-user PASS; cargo-deny PASS. Full 438 KiB log: https://git.kayg.org/attachments/aa5b3ed5-d6df-4e8a-b099-2d0b61bde066. Next: full scripts/verify fast at branch head.

`verify iterate` passed on HEAD `0a58e00e8` after removing the overlong test state-root override. The real-PTY review test and the 128-operation random churn property both passed. Gate rows: fmt PASS; VT native fmt PASS; CLI plugin compile-out PASS; clippy PASS; SSH runtime test helper PASS; test PASS; SSH inode reuse fixture PASS; shim process-per-user PASS; cargo-deny PASS. Full 438 KiB log: https://git.kayg.org/attachments/aa5b3ed5-d6df-4e8a-b099-2d0b61bde066. Next: full `scripts/verify fast` at branch head.
kayg commented 2026-10-19 22:28:29 +00:00
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Final scripts/verify fast passed at HEAD 0a58e00e8. The shim process-per-user row passed: 187 passed, 0 failed, 19 ignored. Both static builds passed at their exact ceilings: x86_64 21,344,304 bytes (+0); aarch64 19,535,600 bytes (+0). The process-per-user feature is off in this default static build. Full 459 KiB log: https://git.kayg.org/attachments/72140e30-4ef6-4eab-8b34-474abff85f2a.

Rust gate summary, verbatim:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| SSH runtime test helper   | PASS         |
| test                      | PASS         |
| SSH inode reuse fixture   | PASS         |
| shim process-per-user     | PASS         |
| cargo-deny                | PASS         |
| static builds             | PASS         |
+---------------------------+--------------+

TypeScript protocol test final output, verbatim:

 37 pass
 0 fail
 34463 expect() calls
Ran 37 tests across 10 files. [2.59s]

Next: compare the stripped x86_64 static size against merge base 11d7dd030 using the same scripts/static-cargo recipe.

Final `scripts/verify fast` passed at HEAD `0a58e00e8`. The shim process-per-user row passed: 187 passed, 0 failed, 19 ignored. Both static builds passed at their exact ceilings: x86_64 21,344,304 bytes (+0); aarch64 19,535,600 bytes (+0). The process-per-user feature is off in this default static build. Full 459 KiB log: https://git.kayg.org/attachments/72140e30-4ef6-4eab-8b34-474abff85f2a. Rust gate summary, verbatim: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | SSH runtime test helper | PASS | | test | PASS | | SSH inode reuse fixture | PASS | | shim process-per-user | PASS | | cargo-deny | PASS | | static builds | PASS | +---------------------------+--------------+ ``` TypeScript protocol test final output, verbatim: ``` 37 pass 0 fail 34463 expect() calls Ran 37 tests across 10 files. [2.59s] ``` Next: compare the stripped x86_64 static size against merge base `11d7dd030` using the same `scripts/static-cargo` recipe.
kayg commented 2026-10-19 22:35:09 +00:00
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Captured the branch artifact before the merge-base build: stripped static x86_64 size 21,344,304 bytes at 0a58e00e8; SHA-256 dcec5065022a454fea1c5871aa8485c47cb46807302fb5e34a830a646c0119dd. This default build does not enable process-per-user. The matching build from detached base 11d7dd030 is queued on the four-slot wrapper. Receipt: https://git.kayg.org/attachments/6ce33c5a-7175-48be-aa24-8c2ee8c64c71.

Captured the branch artifact before the merge-base build: stripped static x86_64 size 21,344,304 bytes at `0a58e00e8`; SHA-256 `dcec5065022a454fea1c5871aa8485c47cb46807302fb5e34a830a646c0119dd`. This default build does not enable `process-per-user`. The matching build from detached base `11d7dd030` is queued on the four-slot wrapper. Receipt: https://git.kayg.org/attachments/6ce33c5a-7175-48be-aa24-8c2ee8c64c71.
kayg commented 2026-10-19 22:47:11 +00:00
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Finished #205 at HEAD 0a58e00e8bee141bf49ad862b8eb6cab6e58049c. The PTY read remains bounded by the session read budget and fixed bulk buffer, independent of ring retention; at zero ring capacity, existing sessions drain PTY output, advance the live screen and replay head, and recover viewers with snapshots. The merged review regression and seeded 128-operation open/write/close property pass.

Perf VM (infraternal-perf-test, x86_64, Linux 6.12.111+deb13-amd64): 1,000 full-pool typing-to-viewer turns at 557,056/557,056 pool bytes measured p50 0.0475 ms, p99 0.1440 ms, max 0.2749 ms. Load average was 0.00/1.17/2.11 before and after. Receipt: https://git.kayg.org/attachments/21123716-0960-4e35-b80d-18d00ab604d9.

Static size comparison used the same scripts/static-cargo recipe on merge base 11d7dd03009ece35137f934abc4e2db3452cdcb4 and this branch. Both stripped static x86_64 artifacts are exactly 21,344,304 bytes, SHA-256 dcec5065022a454fea1c5871aa8485c47cb46807302fb5e34a830a646c0119dd, for a delta of 0 bytes. process-per-user is off in the default static build. The fast gate also measured aarch64 at its exact 19,535,600-byte ceiling. Static comparison receipts: https://git.kayg.org/attachments/d84917fa-81ea-4783-8a20-049e56993ea7 and https://git.kayg.org/attachments/ca63e15d-c6e5-4c28-b09c-6b8296d1c7ee.

scripts/verify fast passed at the stated HEAD. Full log: https://git.kayg.org/attachments/72140e30-4ef6-4eab-8b34-474abff85f2a. Rust gate output, verbatim:

+---------------------------+--------------+
| Rust gate                 | Result       |
+---------------------------+--------------+
| fmt                       | PASS         |
| VT native fmt             | PASS         |
| CLI plugin compile-out    | PASS         |
| clippy                    | PASS         |
| SSH runtime test helper   | PASS         |
| test                      | PASS         |
| SSH inode reuse fixture   | PASS         |
| shim process-per-user     | PASS         |
| cargo-deny                | PASS         |
| static builds             | PASS         |
+---------------------------+--------------+

TypeScript protocol tests, verbatim:

 37 pass
 0 fail
 34463 expect() calls
Ran 37 tests across 10 files. [2.59s]

The temporary baseline worktrees, build target, and staged perf-VM binary were removed. Worktree is clean. Commits remain local and were not pushed, per the explicit worktree instruction.

Finished #205 at HEAD `0a58e00e8bee141bf49ad862b8eb6cab6e58049c`. The PTY read remains bounded by the session read budget and fixed bulk buffer, independent of ring retention; at zero ring capacity, existing sessions drain PTY output, advance the live screen and replay head, and recover viewers with snapshots. The merged review regression and seeded 128-operation open/write/close property pass. Perf VM (`infraternal-perf-test`, x86_64, Linux 6.12.111+deb13-amd64): 1,000 full-pool typing-to-viewer turns at 557,056/557,056 pool bytes measured p50 0.0475 ms, p99 0.1440 ms, max 0.2749 ms. Load average was 0.00/1.17/2.11 before and after. Receipt: https://git.kayg.org/attachments/21123716-0960-4e35-b80d-18d00ab604d9. Static size comparison used the same `scripts/static-cargo` recipe on merge base `11d7dd03009ece35137f934abc4e2db3452cdcb4` and this branch. Both stripped static x86_64 artifacts are exactly 21,344,304 bytes, SHA-256 `dcec5065022a454fea1c5871aa8485c47cb46807302fb5e34a830a646c0119dd`, for a delta of 0 bytes. `process-per-user` is off in the default static build. The fast gate also measured aarch64 at its exact 19,535,600-byte ceiling. Static comparison receipts: https://git.kayg.org/attachments/d84917fa-81ea-4783-8a20-049e56993ea7 and https://git.kayg.org/attachments/ca63e15d-c6e5-4c28-b09c-6b8296d1c7ee. `scripts/verify fast` passed at the stated HEAD. Full log: https://git.kayg.org/attachments/72140e30-4ef6-4eab-8b34-474abff85f2a. Rust gate output, verbatim: ``` +---------------------------+--------------+ | Rust gate | Result | +---------------------------+--------------+ | fmt | PASS | | VT native fmt | PASS | | CLI plugin compile-out | PASS | | clippy | PASS | | SSH runtime test helper | PASS | | test | PASS | | SSH inode reuse fixture | PASS | | shim process-per-user | PASS | | cargo-deny | PASS | | static builds | PASS | +---------------------------+--------------+ ``` TypeScript protocol tests, verbatim: ``` 37 pass 0 fail 34463 expect() calls Ran 37 tests across 10 files. [2.59s] ``` The temporary baseline worktrees, build target, and staged perf-VM binary were removed. Worktree is clean. Commits remain local and were not pushed, per the explicit worktree instruction.
kayg commented 2026-10-19 23:37:18 +00:00
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Delta review of user-screen-pool-r2 (0a58e00e8): MERGE, no P0/P1/P2 (the review job could not post: fj InvalidContentType). Reads bounded by the 4/16 KiB reactor budget independent of ring capacity; ring stays capped and accounted; a viewer behind retained history gets a snapshot at the head; slow viewers keep backpressure. verify fast exit 0; shim process-per-user 187 pass / 0 fail / 19 ignored; size 0 B (feature off by default). Merged into dev 7ee79fb6d. Default stays off until the D270 soak/fault gates and the owner's go.

Delta review of user-screen-pool-r2 (0a58e00e8): MERGE, no P0/P1/P2 (the review job could not post: fj InvalidContentType). Reads bounded by the 4/16 KiB reactor budget independent of ring capacity; ring stays capped and accounted; a viewer behind retained history gets a snapshot at the head; slow viewers keep backpressure. verify fast exit 0; shim process-per-user 187 pass / 0 fail / 19 ignored; size 0 B (feature off by default). Merged into dev 7ee79fb6d. Default stays off until the D270 soak/fault gates and the owner's go.
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kayg/infraternal#205
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