30 lines
1.3 KiB
Markdown
30 lines
1.3 KiB
Markdown
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# Memory Best Practices
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## Environment
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- VPS: 8GB RAM, 4GB swap, Debian
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- Running: Docker stack (8 containers), Woodpecker CI, OpenClaw gateway
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## Safe Fixes (no permission needed)
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- Kill stale `claude` processes (>3h old): `pgrep -f "claude" --older 10800 | xargs kill`
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- Drop filesystem caches: `sync && echo 3 | sudo tee /proc/sys/vm/drop_caches`
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- Restart bloated Anvil: `sudo docker restart harb-anvil-1` (grows to 12GB+ over hours)
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- Kill orphan node processes from dead worktrees
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## Dangerous (escalate)
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- `docker system prune -a --volumes` — kills CI images, hours to rebuild
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- Stopping harb stack containers — breaks dev environment
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- OOM that survives all safe fixes — needs human decision on what to kill
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## Known Memory Hogs
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- `claude` processes from dev-agent: 200MB+ each, can zombie
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- `dockerd`: 600MB+ baseline (normal)
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- `openclaw-gateway`: 500MB+ (normal)
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- Anvil container: starts small, grows unbounded over hours
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- `forge build` with via_ir: can spike to 4GB+. Use `--skip test script` to reduce.
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- Vite dev servers inside containers: 150MB+ each
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## Lessons Learned
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- After killing processes, always `sync && echo 3 | sudo tee /proc/sys/vm/drop_caches`
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- Swap doesn't drain from dropping caches alone — it's actual paged-out process memory
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- Running CI + full harb stack = 14+ containers on 8GB. Only one pipeline at a time.
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