A certain KV node is very slow, slow_score=100, and both leader_count and region_count are significantly lower than other KV nodes

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

Original topic: 某个kv节点很慢,slow_score=100,leader_count,region_count都明显小于其他kv节点。

| username: TiDBer_zlOuqDjy

[TiDB Usage Environment] Production Environment
[TiDB Version] v7.1.1
[Reproduction Path] Node 41 has been expanded for a long time, during which the slow_score has always been high, but the used size has been gradually increasing (up to about 1.5T). Recently, after expanding two more nodes, it was found that the slow_score is still high, and the used_size has become very small.
[Encountered Problem: Problem Phenomenon and Impact] The slow_score is very high, the used_size was over 200G yesterday, but it has become 50G today. The process of SSHing to node 41 is also very slow.
[Resource Configuration] Go to TiDB Dashboard - Cluster Info - Hosts and take a screenshot of this page
[Attachments: Screenshots/Logs/Monitoring]

| username: tidb菜鸟一只 | Original post link

Are labels applied to each TiKV node?

| username: 这里介绍不了我 | Original post link

Is it always like this after scaling up?