ci: age-filter zombie reaper so sibling runners on Grogu don't kill each other #188

New Issue

2026-05-13T22:00:39Z

KofTwentyTwo commented

2026-05-13 22:00:39 +00:00

(Migrated from github.com)

What

Add a 1-hour age filter to the Reap orphan xctest/swift-test processes step so it doesn't kill in-flight test processes belonging to sibling self-hosted runners on the same machine.

Why

When Grogu hosts multiple self-hosted runners simultaneously (planned: 3 runners on a 24-core / 128 GB machine), each runner's job-start cleanup step would kill xctest/swift-test/swift-driver belonging to every other runner. The result: as soon as you scale past one runner, concurrent SPM matrix jobs nuke each other.

Real CI jobs complete in <10 min. Zombies from interactive Xcode use are typically >hours old. A 1-hour age cutoff cleanly separates the two populations.

Acceptance

Cleanup kills xctest aged ≥ 1 hour, leaves anything younger alone.
Validated against synthetic ps output covering MM:SS / HH:MM:SS / DD-HH:MM:SS formats.
Single-runner behavior unchanged (no regression on current Grogu-jarvis setup).

## What Add a 1-hour age filter to the `Reap orphan xctest/swift-test processes` step so it doesn't kill in-flight test processes belonging to sibling self-hosted runners on the same machine. ## Why When Grogu hosts multiple self-hosted runners simultaneously (planned: 3 runners on a 24-core / 128 GB machine), each runner's job-start cleanup step would kill xctest/swift-test/swift-driver belonging to every other runner. The result: as soon as you scale past one runner, concurrent SPM matrix jobs nuke each other. Real CI jobs complete in <10 min. Zombies from interactive Xcode use are typically >hours old. A 1-hour age cutoff cleanly separates the two populations. ## Acceptance - [ ] Cleanup kills xctest aged ≥ 1 hour, leaves anything younger alone. - [ ] Validated against synthetic ps output covering MM:SS / HH:MM:SS / DD-HH:MM:SS formats. - [ ] Single-runner behavior unchanged (no regression on current Grogu-jarvis setup).

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Reference: KofTwentyTwo/Jarvis#188