Detailed Explanation of CPU Usage Monitoring Issues in Raft Store

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

Original topic: Raft store CPU 的使用率监控问题详解

| username: Raymond

The official website says that the CPU usage rate of the raftstore thread should ideally be below 80% * raftstore.store-pool-size. Assuming my raftstore.store-pool-size is 2 (default), then 80% * 2 = 160%. Does this mean that the CPU usage rate of a single raftstore can exceed 100%? How exactly is this calculated? Please advise.

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| username: Raymond | Original post link

Referring to the usage rate of async apply CPU, it can indeed exceed 100%. I found the answer myself.

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| username: hey-hoho | Original post link

100% is calculated per core, setting it to 2 means a maximum of 200%.

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| username: tidb菜鸟一只 | Original post link

It’s normal. Two threads use two CPUs, so the maximum usage can reach 200%.

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| username: system | Original post link

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