java进程占用CPU资源过高分析脚本

 #!/bin/bash

 #输入占用CPU较高的进程号
 pid=$
 if [ -z $pid ]
 then
 echo "PID is NULL"
 exit
 fi

 #找到该进程中占用较高的前30个线程号
 ps -mp ${pid} -o THREAD,tid,time | sort -rn |head - >mytmp.out   

 #获取线程信息
 while read line
  do
 tid=`echo $line | awk '{print $8}'`
 echo $tid
 if [ "${tid}" = "-" ]
 then
 echo "this is '-'"
 else
 echo "TID is :"$tid>>${pid}_busy_thread.log
 sixteenth=`printf "%x" $tid`
 echo "Transform to 0xxxx is :"$sixteenth >>${pid}_busy_thread.log
 /home/service/jdk1..0_29/bin/jstack ${pid} | grep $sixteenth -A  >>${pid}_busy_thread.log
 fi
 done  <mytmp.out

 echo "Finished!"