High CPU Usage in TiKV

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

Original topic: tikv cpu占用高

| username: 大鱼海棠

[TiDB Usage Environment] Production Environment / Testing / PoC
[TiDB Version] 3.0.8
[Encountered Problem]
[Reproduction Path] What operations were performed to encounter the problem
[Problem Phenomenon and Impact]
TiKV monitoring CPU usage is 600%-700%
Check thread CPU
GC worker CPU usage is 100%
gRPC poll CPU usage is 160%
Raft store CPU usage is 140%, others are not high
[Attachments]

Please provide the version information of each component, such as cdc/tikv, which can be obtained by executing cdc version/tikv-server --version.

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| username: 数据小黑 | Original post link

Are you asking about other reasons for high CPU usage in TiKV besides the ones you listed?
Your version is quite old. Have you considered upgrading? More people are using the newer version, so there will be more people who can help you if you encounter problems.
Reference: 【TiDB 社区智慧合集】2022 社区用户升级指南&专栏升级文章大全 - TiDB 的问答社区

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| username: kooooooooo | Original post link

Is the disk I/O high?

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| username: h5n1 | Original post link

Please post the monitoring data. When did it start to increase, and has the QPS changed?

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| username: alfred | Original post link

Are all nodes high? Is there any impact on performance?

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| username: 大鱼海棠 | Original post link

I have looked at other clusters, and the overall resource usage of the 3.0 clusters is higher than that of the 5.4 clusters. I’m not sure if it’s a performance issue with 3.0 or a monitoring issue, but the monitoring of the upgraded clusters seems quite normal.

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| username: system | Original post link

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