Found because the operator heard the fans. romm 5.3.0 was promoted that morning; the update read
`done` and the app ran clean for two hours, then OOM-crash-looped for six - 4530 worker SIGKILLs,
~500% CPU, host load 5.2 while otherwise idle, and nothing alarmed.
Raising the limit to 768M was still a guess and fixed nothing (memory.peak hit exactly 768 MiB).
Measured instead: ~216 MiB per warm uvicorn worker, so the image's default of 4 workers needs
~882 MiB. /init reads WEB_SERVER_CONCURRENCY; set to 2.
Proven under load, not just at idle: 26,645 requests over 300 s, memory 416-614 MiB against 768,
trending down, zero SIGKILLs, OOMKilled false. Idle CPU 500% -> 1.64%.
The first soak measured nothing - it was pointed at the scratch-guest subdomain, every request
404'd at traefik in 9 ms, and the counter reported 14,026 successes. Positive and negative controls
are now asserted before any load is driven.
Carried into R-462: `proven` has meant "the update applied and the data survived", not "the new
version runs".
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
Part 1: tandoor/zipline/wger probes corrected in the catalog and red-proofed live on 9202 in both
directions - "Nem egeszseges" with the front door serving 200, then "Fut" after the real sync with
no redeploy. tandoor's failed edge re-walked: done at +41.1s where it was failed at +361.9s.
Part 2: fifteen proven versions on the live catalog, one commit per app; the guarded Update pressed
on four apps on demo-hp, all four done.
Opened: R-630 (paperless-ngx's probe has never run on any box - a silent absence, worse than the
wrong probe that was found in one night), R-631 (five templates no static rule can judge),
R-632 (28 of 53 templates never deployed by any drill). Closed: R-618.
Register 318 -> 321. No product code.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
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