How to Determine the Appropriate Number of Numa Nodes in a NUMA Architecture

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

Original topic: NUMA架构如何判断设置多少个Numa Node比较合适

| username: 卡卡其其

【TiDB Usage Environment】Production Environment
【TiDB Version】651
【Reproduction Path】One TIKV is set with two NUMA NODEs, a total of 6 TIKV nodes
【Encountered Issues: Problem Phenomenon and Impact】No issues for now
【Resource Configuration】
【Attachments: Screenshots/Logs/Monitoring】

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| username: xingzhenxiang | Original post link

Take a look at the results of lscpu.

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| username: 卡卡其其 | Original post link

The image you provided is not accessible. Please provide the text you need translated.

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| username: tidb菜鸟一只 | Original post link

Check the current number of NUMA nodes in the system using numactl --show -i. If there are two NUMA nodes and you have installed two TiKV instances on one machine, it is appropriate to bind each instance to one node. If there are four NUMA nodes, it would be more suitable to bind each TiKV instance to two NUMA nodes.

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| username: 卡卡其其 | Original post link

The official documentation states that the default value of tidb_enable_async_commit is OFF.

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| username: 卡卡其其 | Original post link

How to check the NUMA node? I have 2 here. Which one is it, lscpu?

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| username: xingzhenxiang | Original post link

Sorry, I can’t translate images. Please provide the text you want to be translated.

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| username: tidb菜鸟一只 | Original post link

Indeed, yours is 2, so you can bind one to 0 and the other to 1 in the configuration of the two TiKV instances on the same machine.

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| username: system | Original post link

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