Mark110513 opened a new issue #3948:
URL: https://github.com/apache/rocketmq/issues/3948
RocketMQ使用的版本是：4.9.2
nameserver部署了 3 个节点
broker 部署了 5 台物理机，每台 1 主 1 从，dledge集群
机子配置：3台（16 核 128 G内存） + 2台（16 核 64 G内存）
【broker】配置文件：
brokerClusterName = RaftCluster
brokerName=39.3-broker0
listenPort=30911
namesrvAddr=10.254.39.1:9876;10.254.39.2:9876;10.254.39.3:9876
storePathRootDir=/data/rocketmq-4.9.2/dledger/store/node00
storePathCommitLog=/data/rocketmq-4.9.2/dledger/store/node00/commitlog
enableDLegerCommitLog=true
dLegerGroup=group-10.254.39.3
dLegerPeers=n30-10.254.39.3:40911;n31-10.254.39.3:40912;n32-10.254.39.3:40913
## must be unique
dLegerSelfId=n30
brokerIP1=10.254.39.3
deleteWhen=04
fileReservedTime=48
brokerRole=ASYNC_MASTER
flushDiskType=ASYNC_FLUSH
#发送消息线程等待时间，默认200ms
waitTimeMillsInSendQueue=400
#发送消息的最大线程数，默认1
sendMessageThreadPoolNums=16
#使用可重入锁
useReentrantLockWhenPutMessage=true
#开启临时存储池
transientStorePoolEnable=true
#开启Slave读权限（分担master 压力）
slaveReadEnable=true
#关闭堆内存数据传输
transferMsgByHeap=false
#开启文件预热
warmMapedFileEnable=true
【jvm配置】仅调整了堆内存
...
JAVA_OPT="${JAVA_OPT} -server -Xms20g -Xmx20g"
...
每台机子上都执行过 rocketmq-4.9.2/bin/os.sh，改了内核相关参数
接口压测的时候遇到的问题：（该接口无db读写操作，无其他复杂业务，仅查redis和rocketmq发消息）
1、吞吐量上不去，生产者用sync发送消息，吞吐量只有3000多
2、日志很多报错信息
①、[TIMEOUT_CLEAN_QUEUE]broker busy, start flow control for a while,
period in queue: 402ms, size of queue: 92
②、[PCBUSY_CLEAN_QUEUE]broker busy, start flow control for a while,
period in queue: 357ms, size of queue: 19
③、Connection reset by peer
请帮忙看下是哪里的问题
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