消耗CPU资源的shell脚本
#! /bin/sh# filename killcpu.sh
if [ $# != 1 ] ; then
echo "USAGE: $0 "
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：
# ./killcpu.sh 3
kill30104 ;
kill30106 ;
kill30108 ;
# 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%>
Cpu1:0.0% us,0.0% sy,0.0% ni, 100.0%>
Cpu2: 100.0% us,0.0% sy,0.0% ni,0.0%>
Cpu3: 100.0% us,0.0% sy,0.0% ni,0.0%> Mem: 8165004k total,8095880k used, 69124k free, 53672k buffers
Swap:2031608k total, 103548k used,1928060k free,6801364k cached
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