Bench quiet-host admission never admits on shared fdev: schedule a quiet window or a dedicated bench slot #5229

Parent Outcome: #5097
Work level: Delivery · Track: Active delivery · Intended Status: Ready

Owner

Root/fdev assigns.

Done when

Benchmark baselines that need a quiet host (FS.GG.Game #780 software re-baseline, FS.GG.Algorithms#1 kernel baselines, the #753 before/after numbers, and #792 game baselines) can actually run.

• The problem: fdev's load5 sat at 5.6–9.3 against the 3.0 (0.25/core) threshold for hours, because parallel agent lanes share the host (Atlas environment/fdev-bulk-hdd-shared-and-host-memory), so the probe never admits.
• Fix: a scheduled quiet window, for example a nightly or Root-declared bench window in which the coordinator pauses heavy lanes (no new builds or browser runs) and the bench queue drains. Or a dedicated bench slot such as cgroup or CPU-pinned isolation, if supported.
• Mechanics: documented, with a queue of owed bench runs, an admission log, and evidence that at least one owed baseline completed through it.
• Coordinator skill: the work-board/coord skill gets the rule to schedule the window when owed benches accumulate.

Current deliverable

None. Reported by the ALGO-01.2 owner (FS.GG.Algorithms#2/#3) and the #761 repair owner.

Next action

Owner selects and starts.

Blocked on

Nothing.

Acceptance evidence

None yet.

Refs #5182