1.JDK自带的JVM性能调优监控工具
（1）avah命令(C Header and Stub File Generator)
（2）jps命令(Java Virtual Machine Process Status Tool)
（3）jstack命令(Java Stack Trace)
（4）jstat命令(Java Virtual Machine Statistics Monitoring Tool)
（5）jmap命令(Java Memory Map)
（6）jinfo命令(Java Configuration Info)
（7）jconsole命令(Java Monitoring and Management Console)
（8）jvisualvm命令(Java Virtual Machine Monitoring, Troubleshooting, and Profiling Tool)
（9）jhat命令(Java Heap Analyse Tool)
（10）Jdb命令(The Java Debugger)
（11）Jstatd命令(Java Statistics Monitoring Daemon)