RocektMQ JVM参数

Broker

/bin/java
-server
-Xms1024m
-Xmx1024m
-Xmn256m

-XX:+UseG1GC
-XX:G1HeapRegionSize=16m
-XX:G1ReservePercent=25
-XX:InitiatingHeapOccupancyPercent=30

-XX:SoftRefLRUPolicyMSPerMB=0 在有大量反射代码的场景下，该值要大于0，默认是1000

-verbose:gc
-Xloggc:/dev/shm/mq_gc_%p.log
-XX:+PrintGCDetails
-XX:+PrintGCDateStamps
-XX:+PrintGCApplicationStoppedTime
-XX:+PrintAdaptiveSizePolicy
-XX:+UseGCLogFileRotation
-XX:NumberOfGCLogFiles=5
-XX:GCLogFileSize=30m

-XX:-OmitStackTraceInFastThrow 不打印异常栈信息，不利于调试
-XX:-UseLargePages
-XX:+AlwaysPreTouch 真正分配物理内存
-XX:MaxDirectMemorySize=2g
-XX:-UseBiasedLocking

-Djava.ext.dirs=/jre/lib/ext:/mnt/rocketmq-4.5.1/bin/../lib
-cp .:/mnt/rocketmq-4.5.1/bin/../conf:
org.apache.rocketmq.broker.BrokerStartup

Name Server

/bin/java
-server
-Xms1024m
-Xmx1024m
-Xmn256m
-XX:MetaspaceSize=64m
-XX:MaxMetaspaceSize=128m

-XX:+UseConcMarkSweepGC
-XX:+UseCMSCompactAtFullCollection
-XX:CMSInitiatingOccupancyFraction=70
-XX:+CMSParallelRemarkEnabled
-XX:+CMSClassUnloadingEnabled
-XX:SurvivorRatio=8
-XX:-UseParNewGC

-XX:SoftRefLRUPolicyMSPerMB=0
-verbose:gc
-Xloggc:/dev/shm/rmq_srv_gc.log
-XX:+PrintGCDetails

-XX:-OmitStackTraceInFastThrow
-XX:-UseLargePages

-Djava.ext.dirs=/jre/lib/ext:/mnt/rocketmq-4.5.1/bin/../lib
-cp .:/mnt/rocketmq-4.5.1/bin/../conf:
org.apache.rocketmq.namesrv.NamesrvStartup

谢谢阅读！