1.查询cpu消耗最大的进程
jps 先找出来那些java进程
top 命令查看那些java进程消耗的cpu比较大
2.查找占用内存最大的线程
命令：ps p pid -L -o pcpu,pid,tid,time,tname,cmd
%CPU PID TID TIME TTY CMD
0.0 32060 32060 00:00:00 ? /data/java
0.0 32060 32061 00:00:00 ? /data/java打印线程的10进制格式为16进制格式（TID对应的那一列）：
printf "%x
" 32061
7d3d3.查询jstack中对应的线程信息
[root@10-10-244-163 ~]# jstack 32060|grep 7d3d -C 10
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:216)
"Reference Handler" #2 daemon prio=10 os_prio=0 tid=0x00007f6dc0108000 nid=0x7d41 in Object.wait() [0x00007f6da99cb000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:502)
at java.lang.ref.Reference.tryHandlePending(Reference.java:191)
- locked <0x00000000c08d0ab8> (a java.lang.ref.Reference$Lock)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)
"main" #1 prio=5 os_prio=0 tid=0x00007f6dc000d000 nid=0x7d3d runnable [0x00007f6dc9e1a000]
java.lang.Thread.State: RUNNABLE
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409)
at java.net.ServerSocket.implAccept(ServerSocket.java:545)
at java.net.ServerSocket.accept(ServerSocket.java:513)
at org.apache.catalina.core.StandardServer.await(StandardServer.java:453)
at org.apache.catalina.startup.Catalina.await(Catalina.java:777)
at org.apache.catalina.startup.Catalina.start(Catalina.java:723)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
