# Tikv Scheduler (B)


![left](./student-guide/diagram/26-scheduler-02-01.png)

+ Grafana Monitoring TiKV Details —> Scheduler - prewrite —> Scheduler latch wait duration
  + latch wait duration is not high, check the async write duration further by writing to raftstore in the next step
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The latch wait duration is not high. It is recommended to go to the next section of Raftstore writes to further troubleshoot the async write duration time