# TiKV scheduler（A）

![left](./student-guide/diagram/26-scheduler-01-01.png)

+ Grafana 监控 TiKV Details --> Scheduler - prewrite --> Scheduler command duration
  + Scheduler command duration 与 gRPC message duration 趋势相同,接下来与 scheduler latch wait duration 进行对比,看是否慢在 latch 的获取时段
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- Grafana 监控 TiKV Details --> Scheduler - prewrite --> Scheduler command duration
Scheduler latch wait duration