Cicizz opened a new issue #601: Why use spinlocks by default？ URL: https://github.com/apache/rocketmq/issues/601 Hello. When I upgrade rocketmq version 3.2.6 to 4.31,I found some configuration defaults changed `useReentrantLockWhenPutMessage=false` `sendMessageThreadPoolNums=1` `sendThreadPoolQueueCapacity=10000` but when I was doing a send message performance test,I found the TPS is very low and cpu is high.so I changed the configuration: `useReentrantLockWhenPutMessage=true` `sendMessageThreadPoolNums=32` `sendThreadPoolQueueCapacity=100000` I wonder why use this default configuration? ** The machine configuration ** 8cpu and 16g memory and 300g disk
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