b5c6639272
Same t3-disconnect root-cause work: a runaway claude agent child grew to 10.8G anon RSS inside t3-serve@wizard's cgroup, swap-thrashed devvm off its spinning disk (system-wide multi-10s freezes = every t3 client's 20s watchdog firing = the 'frequent disconnects that self-recover'), then the global OOM at 2026-06-10 19:56 took the whole unit down for 8.5min because the default OOMPolicy=stop fails the unit when ANY cgroup child is OOM-killed. Cap the cgroup (MemoryHigh=12G, MemoryMax=16G), forbid swap so stalls can't smear into minute-long freezes, and OOMPolicy=continue so a runaway agent dies alone while the WS server keeps serving.
31 lines
1.1 KiB
Desktop File
31 lines
1.1 KiB
Desktop File
[Unit]
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Description=T3 Code server for %i (t3 serve, per-user)
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Documentation=https://github.com/pingdotgg/t3code
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After=network.target
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[Service]
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Type=simple
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User=%i
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Group=%i
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Environment=HOME=/home/%i
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Environment=PATH=/usr/local/bin:/usr/bin:/bin:/home/%i/.local/bin
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Environment=NODE_ENV=production
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EnvironmentFile=/etc/t3-serve/%i.env
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WorkingDirectory=/home/%i
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ExecStart=/usr/bin/t3 serve --host 0.0.0.0 --port ${T3_PORT} --base-dir /home/%i/.t3
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Restart=on-failure
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RestartSec=5
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# Memory containment (2026-06-10): agent children live in this cgroup; a
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# runaway agent (10.8G anon on a 23G host) swap-thrashed the whole devvm —
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# every >20s stall fires the t3 client watchdog (visible "disconnects") —
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# then global-OOMed. Cap the cgroup so a runaway OOMs early and locally,
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# and forbid swap so stalls can't smear into minutes-long freezes.
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MemoryHigh=12G
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MemoryMax=16G
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MemorySwapMax=0
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# Default OOMPolicy=stop kills the WHOLE unit (8.5min outage 2026-06-10
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# 19:56) when ANY child is OOM-killed; continue = runaway dies, server stays.
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OOMPolicy=continue
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[Install]
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WantedBy=multi-user.target
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