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alert-rules: update Scheduler-All #20469

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Jun 13, 2025
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alert-rules: update Scheduler-All #20469

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4 changes: 2 additions & 2 deletions alert-rules.md
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Expand Up @@ -604,8 +604,8 @@ aliases: ['/docs-cn/dev/alert-rules/','/docs-cn/dev/reference/alert-rules/']

* 处理方法：

1. 查看 Scheduler-All 监控中的 scheduler command duration，看哪一个命令耗时最大。
2. 查看 Scheduler-All 监控中的 scheduler scan details，看 `total` 和 `process` 是否匹配。如果相差太大，表明有很多无效的扫描，另外观察是否有 `over seek bound`，如果太多，表明 GC 不及时。
1. 查看 `Scheduler` 和 `Scheduler-${cmd}`（`${cmd}` 为指定待查询的写命令）监控中的 scheduler command duration，看哪一个命令耗时最大。
2. 查看 `Scheduler` 和 `Scheduler-${cmd}` 监控中的 scheduler scan details，检查 `total` 和 `process` 是否匹配。如果相差太大，表明有很多无效的扫描。同时观察是否有 `over seek bound`，如果太多，表明 GC 不及时。
3. 查看 Storage 监控中的 storage async snapshot/write duration，看是否 Raft 操作不及时。

#### `TiKV_thread_apply_worker_cpu_seconds`
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