8G内存机器JVM设置模版

-Xms4096m
-Xmx4096m
-Xmn3072m
-XX:MetaspaceSize=256m
-XX:MaxMetaspaceSize=256m
-XX:+UseParNewGC
-XX:+UseConcMarkSweepGC
-XX:CMSInitiatingOccupancyFraction=92
-XX:+UseCMSCompactAtFullCollection
-XX:CMSFullGCsBeforeCompaction=0
-XX:+CMSParallelInitialMarkEnabled
-XX:+CMSScavengeBeforeRemark
-XX:+DisableExplicitGC
-XX:+PrintGCDateStamps
-XX:+PrintGCDetails
-Xloggc:gc.log
-XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=/usr/local/oom