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CI perf (settings): 90-min merge-queue check timeout let one stuck check freeze main for 77 min

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評估

難度
2/5
預估耗時
1-3 小時
新手友好度
48/100
Issue 類型
功能
描述清晰度
基本清楚
活躍度
活躍
技術堆疊
github-actions, rust
領域
ci-cd

研究方向

Start by checking the merge queue ruleset value for check_response_timeout_minutes and read scripts/merge-queue-fail-fast.py for the referenced Gradle durations. Verify whether any merge-group tier runs those longer jobs, then choose 45 or 60 minutes accordingly. Done when the timeout is updated to the supported value and the merge queue retains enough time for its longest merge-group checks.

由索引模型根據 Issue 內容生成。

描述

agent:needs-human agent:triaged ci-perf priority:p3

The merge queue's check_response_timeout_minutes is 90 (ruleset 24668460). Merge-group CI takes far less than that. So when a required check never reports, the queue stays frozen for about 1.5 hours before it gives up.

What happened on 2026-10-22. The clippy check of queue head #1653 stayed in_progress after its job and its run had both finished successfully. Details are in #1660. Nothing merged from 17:38 to 18:55 UTC. Seven green entries waited behind it, then all of them were rebuilt after the timeout evicted #1653.

Merge-group CI durations today (CI workflow, success, created to completed):

run PR duration
39820221573 #1651 8.5 min
39820490126 #1656 12.2 min
39822385680 #1663 12.3 min
39822379065 #1642 13.2 min
39822377061 #1640 13.7 min
39822369515 #1652 13.8 min
39822372512 #1653 14.1 min
39824290078 #1667 14.7 min
39826164711 #1664 10.1 min
39826160345 #1658 11.3 min

The longest is under 15 minutes.

Suggestion (needs a repo admin): lower check_response_timeout_minutes from 90 to 45. That is about 3x the slowest run above, which leaves room for a runner backlog (see #1512) and still cuts a stall like today's roughly in half. Before changing it, check that no merge-group tier runs the ~45-minute Gradle legs that scripts/merge-queue-fail-fast.py mentions. If one does, 60 is the safer value.


Generated by Claude Code

主要語言
Rust
星號
8
分支
1
平均合併
19 小時 9 分鐘
30 天內合併 PR
641

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  • 閱讀貢獻指南

從這裡開始

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  3. Fork 儲存庫,在一個分支上完成修改。
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