JDK8默认垃圾回收器详解

java -XX:+PrintCommandLineFlags -version

ZBMAC-2WD3MBHTD:~ duanxiaoqiu$ java -XX:+PrintCommandLineFlags -version

-XX:InitialHeapSize=268435456 -XX:MaxHeapSize=4294967296 -XX:+PrintCommandLineFlags -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:+UseParallelGC

java version "1.8.0_211"

Java(TM) SE Runtime Environment (build 1.8.0_211-b12)

Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)

UseParallelGC 即 Parallel Scavenge + Serial Old,再查看详细信息