query very slow

[WilliamShoww]

version: Springboot 2.2.8.RELEASE+ Lettuce 5.2.2.RELEASE

background

I'm performance testing, so many request to server。I find code's performace in lettuce's io.lettuce.core.protocol.AsyncCommand#await method。No matter I change options no change。Every query slow, need 50ms/query。
I'm slow testing rate, query is normal speed , 2-4ms/query。 How can i do?
After days, I'm set LettuceConnectionFactory options redisConnectionFactory.setShareNativeConnection(false) the query speed is higher then begin, 10-20ms/query; but not dreams。 How can i do? My english is badly

中文描述

压力测试的时候，大量请求发送到服务端，发现加了Redis缓存的接口都会卡，用监控工具发现代码性能卡在lettuce的io.lettuce.core.protocol.AsyncCommand#await方法中，每获取一个key就需要花费50ms, 按理来说应该是5ms以内，查询Redis也没有慢查询；但是降低压力测试的请求并发量，这个方法就很快，查询在3-5ms，符合正常的；过了几天，我把LettuceConnectionFactory的参数改了一下redisConnectionFactory.setShareNativeConnection(false)，查询速度比一开始快了不少，每次查询10-20ms，但是也不理想，我该怎么办？请帮帮我吧。

[mp911de]

Throughput and performance depend on a lot of factors. redisConnectionFactory.setShareNativeConnection(false) causes to use multiple connections. Each connection has an I/O thread assigned which indicates that encoding and decoding commands requires a notable amount of CPU power. Ideally, run a profiler to identify code paths that require a significant amount of CPU time.

[WilliamShoww]

IF use redisConnectionFactory.setShareNativeConnection(true) , is only one actually socket in work. one native socket mapping multiple lettuce connection? can be config m actually socket mapping n lettuce connetction?