The CPU usage of two TiKV nodes is very high

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1

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: 有两个节点TIKV的CPU使用率很高

| username: TiDBer_Mb0v3ad7

【TiDB Environment】Production
【TiDB Version】V5.3.0
【Problem Encountered】High CPU usage on two TiKV nodes
【Reproduction Path】
【Problem Phenomenon and Impact】
The cluster has 3 TiKV nodes, and the CPU usage on two of them is very high.

Refer to TiDB 热点问题处理 | PingCAP 文档中心 (TiDB Hotspot Issue Handling)
In TiKV-Trouble-Shooting under the Hot Write panel, observe Raftstore CPU: basically normal

image
image909×306 46.8 KB

In TIKV-Details under Thread_CPU, check coprocessor CPU: no data
image
image915×267 9.25 KB

How can this issue be troubleshooted?

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| username: OnTheRoad | Original post link

Is the CPU utilization of each TiKV balanced in the “Other” panel under TiKV-Detail->Thread CPU?

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| username: TiDBer_Mb0v3ad7 | Original post link

Apart from the image above, everything else is basically balanced or has no data.

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| username: buddyyuan | Original post link

Basically, it’s still a hotspot issue. Take a look at the heatmap in the dashboard. How many cores does your CPU have? This usage rate is quite high, but I think it’s acceptable.

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| username: system | Original post link

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