What does "general" represent in TiDB where the 99th percentile is relatively high, specifically general:253ms?

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

Original topic: tidb中99线比较高,其中general:253ms,这里面general代表是什么意思?

| username: yulei7633

In TiDB, the 99th percentile is relatively high, with general: 253ms. What does “general” represent here?
Specifically, as shown in the following image:

| username: yulei7633 | Original post link

| username: Jasper | Original post link

The SQL initiated by user business behavior is uniformly classified as general, corresponding to internal, which refers to the internal SQL automatically executed by the cluster itself.

| username: 友利奈绪 | Original post link

I really haven’t paid much attention.