sltjav opened a new issue, #8639: URL: https://github.com/apache/rocketmq/issues/8639
### Before Creating the Bug Report - [X] I found a bug, not just asking a question, which should be created in [GitHub Discussions](https://github.com/apache/rocketmq/discussions). - [X] I have searched the [GitHub Issues](https://github.com/apache/rocketmq/issues) and [GitHub Discussions](https://github.com/apache/rocketmq/discussions) of this repository and believe that this is not a duplicate. - [X] I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ. ### Runtime platform environment 物理机 linux centos CPU：96c，启动内存32g，磁盘：nvme卡 ### RocketMQ version 4.9.7 ### JDK Version openjdk1.8 ### Describe the Bug **偶现发送消息耗时升高，产生毛刺（300ms-1.2s）** 排查过程，抓包发现请求已经到达Broker网卡，且在RequestTask的run()方法第一行中，打印createTimestamp-bornTimestamp差值发现耗时已经升高，说明耗时就发生在从网卡读消息，到netty走完pipeline并交给SendMessageProcessor的过程中： **补充** 1.未触发Flow control报错 2.pagecache写入监控的putMessageEntireTimeMax最大只有几十ms 3.gc的pause时长<1ms，没有fullgc 4.TCP的receive和send Q偶有突刺，最大<2M **Broker相关配置项：** serverSelectorThreads=16 serverWorkerThreads=32 sendMessageThreadPoolNums=32 transientStorePoolEnable=true transferMsgByHeap=false ### Steps to Reproduce 不确定，可能现象是生产tps脉冲增高，且消息体较大2-4KB。 ### What Did You Expect to See? 耗时毛刺（300ms-1.2s）的可能原因，以及后续如何优化 ### What Did You See Instead? 生产的max耗时远高于日常 ### Additional Context _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@rocketmq.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
