jvm性能调优

来源：互联网发布：知乎程序员收入编辑：程序博客网时间：2024/06/02 12:30

云平台未调优：

JAVA_OPTS='-server-Xms2g -Xmx2g -Xmn768m -Xss256k-XX:PermSize=64m-XX:MaxPermSize=128m-Djava.rmi.server.hostname=172.16.43.166 -Dcom.sun.management.jmxremote.port=8006 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false-XX:+AggressiveOpts-XX:+UseBiasedLocking-XX:+UseTLAB-XX:+UseConcMarkSweepGC-XX:+CMSParallelRemarkEnabled-XX:+CMSClassUnloadingEnabled-XX:-UseGCOverheadLimit-XX:+ExplicitGCInvokesConcurrent-XX:+UseCMSCompactAtFullCollection-XX:CMSFullGCsBeforeCompaction=5-XX:MaxDirectMemorySize=512m-XX:+PrintGC-XX:+PrintGCDetails-XX:+PrintGCTimeStamps-XX:+PrintHeapAtGC-XX:+PrintGCApplicationStoppedTime-XX:+PrintGCApplicationConcurrentTime-Xloggc:/app/dump/gc2.txt-XX:+HeapDumpOnOutOfMemoryError-XX:HeapDumpPath=/app/dump/oom2.txt'

正是环境调优后：

【管理平台】JAVA_OPTS='-server-Xms2g -Xmx2g -Xmn768m -Xss256k-XX:PermSize=64m-XX:MaxPermSize=128m-XX:+AggressiveOpts-XX:+UseBiasedLocking-XX:+UseTLAB-XX:+UseConcMarkSweepGC-XX:+CMSParallelRemarkEnabled-XX:+CMSClassUnloadingEnabled-XX:-UseGCOverheadLimit-XX:+ExplicitGCInvokesConcurrent-XX:+UseCMSCompactAtFullCollection-XX:CMSFullGCsBeforeCompaction=5-XX:MaxDirectMemorySize=512m-XX:+PrintGC-XX:+PrintGCDetails-XX:+PrintGCTimeStamps-XX:+PrintHeapAtGC-XX:+PrintGCApplicationStoppedTime-XX:+PrintGCApplicationConcurrentTime-Xloggc:/app/JACMS_ORACLE1_interface/dump/gc2.txt-XX:+HeapDumpOnOutOfMemoryError-XX:HeapDumpPath=/app/JACMS_ORACLE1_interface/dump/oom2.txt'

jconsole开启：

Djava.rmi.server.hostname=172.16.43.166 -Dcom.sun.management.jmxremote.port=8006 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false

开启jconsoloe的命令：cmd -- jconsole

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