-XX:+UseParNewGC
-XX:+UseConcMarkSweepGC
-XX:+CMSParallelRemarkEnabled
-XX:+ParallelRefProcEnabled
-XX:+CMSClassUnloadingEnabled
-XX:+PrintGCDetails
-XX:+PrintGCTimeStamps
-XX:+PrintHeapAtGC
-XX:+HeapDumpOnOutOfMemoryError
-verbose:gc
原文：https://www.cnblogs.com/koushr/p/11050470.html