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subagent: keep runs at +1000 when their cgroup is unavailable

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Without a run cgroup (no delegation, setup failed, or one create
failed) a subagent run was started plain at oom_score_adj 0, below the
+500 the unit gave it before. Every run of the daemon now goes through
the entry wrapper; it sets +1000 and enters the cgroup only when there
is one. run_cgroup::entry takes the cgroup as an Option.
This commit is contained in:
atlas 2026-10-12 23:46:18 +02:00 • committed by mara
commit afe6026d44
5 changed files with 159 additions and 64 deletions
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3
docs/scheduler/coordinator.md
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@ -491,7 +491,8 @@ outside it. Inside the container these are
`/sys/fs/cgroup/system.slice/hive-subagent-daemon.service/runs/<name>-<n>/`
and `/sys/fs/cgroup/system.slice/hive-bash-daemon.service/tasks/<id>/`; the
daemon itself sits in `daemon/` beside them. A daemon that can't set these
up logs one warning at start and runs everything in its own cgroup.
up logs one warning at start and runs everything in its own cgroup; subagent
runs still get +1000.
<details><summary>Implementation: swarm caps</summary>