JVM

http://www.Oracle.com/technetwork/Java/javase/tech/vmoptions-jsp-140102.html#G1Options

查看JVM默认参数：java -XX:+UnlockDiagnosticVMOptions -XX:+PrintFlagsFinal -version

查看当前运行项目的参数：jinfo <pid>

 

JAVA_OPTS="-Xms1024M -Xmx2048M"

-Xms也可用-XX:InitialHeapSize=xxx

-Xmx也可用-XX:MaxHeapSize=xxx