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Measure the Linux cache effect of native media exclusions - #8171

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kixelated merged 5 commits into
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quest/m0/ci/hakari-followups
Nov 12, 2026
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kixelated merged 5 commits into
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quest/m0/ci/hakari-followups

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@kixelated kixelated commented Nov 7, 2026 •

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Finishes quest/m0/ci/hakari-followups.md: deletes the quest and its one link from quest/m3/audit-cost.md.

Summary

Measured the Linux cache effect of excluding native media crates from the workspace-hack (moq-dev/moq#7713) on Nightly (Rust benchmark tests).

Run Outcome Summaries Hits / misses Conditional hit rate Avoided
2026-11-04 baseline complete (57m24s) 10 333 / 359 48.12% ~12m28s
2026-11-06 complete (58m38s) n/a 427 / 615 40.98% ~12m0s
2026-11-07 cancelled at 60m 9 (partial) 343 / 572 37.49% ~8m49s

Conclusion: the hit rate drops 7 to 11 points, but compiler time avoided stays within about 30s of the baseline, which is not material against a ~58 minute job. The native media exclusions stay. The later timeouts are not attributable to them: the job already sat near its 60 minute limit, and moq-dev/moq#8522 has since split it.

Public API: none. Wire: none.

Decisions

  • Finishing without a second complete like-for-like sample (maintainer, 2026-11-11): ✅ accept the evidence in hand (rejected: remeasure on the split jobs; mine the cancelled runs)

Choices made without asking

  • The local quest/m0/ci/hakari-followups branch was the head of the already-merged moq-dev/moq#7713. I left it untouched and built on the new claim commit instead.
  • The audit-cost link now points at moq-dev/moq#7713 for the exclusions instead of the deleted quest.

Models

Size: S
Implementer: Claude Code, claude-opus-5-5 (iterate, S)
Implementer: Claude Code, claude-opus-5-5, low effort (iterate, S)

🤖 Generated with Claude Code

(Written by Claude Opus 5.5 with low)

Review

Rewritten by quest review after each round.

  • Reviewer: Codex, gpt-6.1-sol, medium effort
  • Session: 01a1ce97-359a-7522-93ec-d9ad207c8cc5, round 1
  • Head: 4853ebb
  • Base: origin/main at d3b6c25
  • Score: 10/10, The change only removes a follow-up quest and updates its remaining reference, with no executable behavior changes, dangling references, or actionable defects.
  • Findings: none

kixelated and others added 2 commits November 7, 2026 08:15
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@kixelated
kixelated marked this pull request as ready for review November 12, 2026 07:10
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  • quest/m0/ci/hakari-followups.md
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@kixelated
kixelated added this pull request to the merge queue Nov 12, 2026
Merged via the queue into main with commit 0e2c16b Nov 12, 2026
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@kixelated
kixelated deleted the quest/m0/ci/hakari-followups branch November 12, 2026 07:48
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This run was cancelled before it finished.

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