[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

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