noone6931 commented on issue #8959:
URL: https://github.com/apache/rocketmq/issues/8959#issuecomment-2490162780

   broker start up pararm:
   
   -server \
   -Xms6g \
   -Xmx6g \
   -Xmn2g \
   -XX:MaxMetaspaceSize=256m \
   -XX:+UseConcMarkSweepGC \
   -XX:+UseCMSCompactAtFullCollection \
   -XX:+CMSClassUnloadingEnabled \
   -XX:CMSInitiatingOccupancyFraction=70 \
   -XX:+CMSScavengeBeforeRemark \
   -XX:+UseCMSInitiatingOccupancyOnly \
   -XX:CMSFullGCsBeforeCompaction=5 \
   -XX:SurvivorRatio=8 \
   -XX:MaxDirectMemorySize=15g \
   -XX:NewSize=128m \
   -XX:+PrintGCDetails \
   -XX:+PrintGCTimeStamps \
   -XX:+PrintGCDateStamps \
   -XX:+PrintTenuringDistribution \
   -Xloggc:/opt/logs/rmq_srv_gc.log \
   -XX:+UseGCLogFileRotation \
   -XX:NumberOfGCLogFiles=5 \
   -XX:GCLogFileSize=30m \
   -Djava.ext.dirs=/opt/jdk1.8.0_121/jre/lib/ext:/opt/rocketmq/lib \
   -Duser.home=/opt/rocketmq
   
   
   broker.conf:
   deleteWhen = 04
   fileReservedTime = 48
   brokerRole = ASYNC_MASTER
   flushDiskType = ASYNC_FLUSH
   sendMessageThreadPoolNums=32
   useReentrantLockWhenPutMessage=true
   waitTimeMillsInSendQueue=1000
   transferMsgByHeap=false
   warmMapedFileEnable=true


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