[原]消耗CPU资源的shell脚本

使用死循环消耗CPU资源,如果服务器是有多颗CPU,可以选择消耗多少颗CPU的资源:

#! /bin/sh 
# filename killcpu.sh
if [ $# != 1 ] ; then
  echo "USAGE: $0 <CPUs>"
  exit 1;
fi
for i in `seq $1`
do
  echo -ne " 
i=0; 
while true 
do 
i=i+1; 
done" | /bin/sh &
  pid_array[$i]=$! ;
done

for i in "${pid_array[@]}"; do
  echo 'kill ' $i ';';
done

使用方法很简单,参数3表示消耗3颗CPU的资源,运行后,会有一堆 kill 命令,方便 kill 进程:

[root@test02 ~]# ./killcpu.sh 3
kill  30104 ;
kill  30106 ;
kill  30108 ;
[root@test02 ~]# top 
top - 15:27:31 up 264 days, 23:39,  4 users,  load average: 0.86, 0.25, 0.19
Tasks: 185 total,   5 running, 180 sleeping,   0 stopped,   0 zombie
Cpu0  : 100.0% us,  0.0% sy,  0.0% ni,  0.0% id,  0.0% wa,  0.0% hi,  0.0% si
Cpu1  :  0.0% us,  0.0% sy,  0.0% ni, 100.0% id,  0.0% wa,  0.0% hi,  0.0% si
Cpu2  : 100.0% us,  0.0% sy,  0.0% ni,  0.0% id,  0.0% wa,  0.0% hi,  0.0% si
Cpu3  : 100.0% us,  0.0% sy,  0.0% ni,  0.0% id,  0.0% wa,  0.0% hi,  0.0% si
Mem:   8165004k total,  8095880k used,    69124k free,    53672k buffers
Swap:  2031608k total,   103548k used,  1928060k free,  6801364k cached
posted @ 2010-09-08 15:30  killkill  阅读(9799)  评论(0编辑  收藏  举报