命令整理jps-q只输出进程号-mmain函数的参数-l主类全名-v输出jvm参数jstatjstat-gcpid100010classgcgccapacitygcutilgccausegcnewgcnewcapacitygcoldgcoldcapacitycompilerprintcompilationgcmetacapacityjinfo-syspropspid-fl