最新java应用问题调试指南, 包含调试工具使用教程： • Diagnostic Tools Overview • What Are Java Flight Recordings • How to Produce a Flight Recording • Inspect a Flight Recording • The jcmd Utility • Native Memory Tracking • JConsole • The jdb Utility • The jinfo Utility •
1.jps：查看当前运行着的java进程（仿linux下的ps），显示进程号
2. jinfo: 查参数jinfo -flagPermSize 2208(进程号)
jinfo -flag MaxPermSize 2208(进程号)
C:UsersWILL>jinfo
Usage:
jinfo
(to connect to a running process)
where is one of:
-flag to print the value of
