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思想：利用命令查到内核个数，使用死循环占用每一个内核资源，消耗cpu总资源 前半部分没有作条件表达式判断，有需求的可以自行添加 #! /bin/bash ############################################################# # this scripts for cpu usage testing # eg. cpu_test.sh start 50 #start testing use 50% cpu # eg. cpu_test.sh stop #stop testing ############################################################# op=$1 num=$2 mkcsp() { touch ./killcpu.c echo 'int main(){while(1);return 0;}' > killcpu.c gcc -o out killcpu.c chmod +x ./out } start() { cpu_num=$(cat /proc/cpuinfo | grep "physical id" | wc -l) for i in `seq 1 $(expr $num \* $cpu_num / 100)` do ./out & done } stop() { for i in $( ps -ef | grep './out'| grep -v grep | awk '{print $2}') do kill -9 $i done rm -rf killcpu.c out } main() { if [ $op == "start" ] then mkcsp fi $op } main 朋友的脚本 ，我师父啊~ #!/bin/bash # Destription: testing cpu usage performance # Example : sh cpu_usage.sh 12 # Remark : cat /proc/cpuinfo | grep "processor"|wc -l #12==>Get the number of processor # Date : 2015-1-12 # update : 2015-1-12 endless_loop() { echo -ne "i=0; while true do i=i+100; i=100 done" | /bin/bash & } if [ $# != 1 ] ; then echo "USAGE: $0 <CPUs>" exit 1; fi for i in `seq $1` do endless_loop pid_array[$i]=$! ; done for i in "${pid_array[@]}"; do echo 'kill ' $i ';'; done (责任编辑：IT) |