#!/bin/bash interval=3 cpu_num=`cat /proc/stat | grep cpu[0-9] -c` start_idle=() start_total=() cpu_rate=() cpu_rate_file=./`hostname`_cpu_rate.csv if [ -f ${cpu_rate_file} ]; then mv ${cpu_rate_file} ${cpu_rate_file}.`date +%m_%d-%H_%M_%S`.bak fi for((i=0;i<${cpu_num};i++)) { echo -n "cpu$i," >> ${cpu_rate_file} } echo -n "cpu" >> ${cpu_rate_file} echo "" >> ${cpu_rate_file} while(true) do for((i=0;i<${cpu_num};i++)) { start=$(cat /proc/stat | grep "cpu$i" | awk '{print $2" "$3" "$4" "$5" "$6" "$7" "$8}') start_idle[$i]=$(echo ${start} | awk '{print $4}') start_total[$i]=$(echo ${start} | awk '{printf "%.f",$1+$2+$3+$4+$5+$6+$7}') } start=$(cat /proc/stat | grep "cpu " | awk '{print $2" "$3" "$4" "$5" "$6" "$7" "$8}') start_idle[${cpu_num}]=$(echo ${start} | awk '{print $4}') start_total[${cpu_num}]=$(echo ${start} | awk '{printf "%.f",$1+$2+$3+$4+$5+$6+$7}') sleep ${interval} for((i=0;i<${cpu_num};i++)) { end=$(cat /proc/stat | grep "cpu$i" | awk '{print $2" "$3" "$4" "$5" "$6" "$7" "$8}') end_idle=$(echo ${end} | awk '{print $4}') end_total=$(echo ${end} | awk '{printf "%.f",$1+$2+$3+$4+$5+$6+$7}') idle=`expr ${end_idle} - ${start_idle[$i]}` total=`expr ${end_total} - ${start_total[$i]}` idle_normal=`expr ${idle} \* 100` cpu_usage=`expr ${idle_normal} / ${total}` cpu_rate[$i]=`expr 100 - ${cpu_usage}` echo "The CPU$i Rate : ${cpu_rate[$i]}%" echo -n "${cpu_rate[$i]}," >> ${cpu_rate_file} } end=$(cat /proc/stat | grep "cpu " | awk '{print $2" "$3" "$4" "$5" "$6" "$7" "$8}') end_idle=$(echo ${end} | awk '{print $4}') end_total=$(echo ${end} | awk '{printf "%.f",$1+$2+$3+$4+$5+$6+$7}') idle=`expr ${end_idle} - ${start_idle[$i]}` total=`expr ${end_total} - ${start_total[$i]}` idle_normal=`expr ${idle} \* 100` cpu_usage=`expr ${idle_normal} / ${total}` cpu_rate[${cpu_num}]=`expr 100 - ${cpu_usage}` echo "The average CPU Rate : ${cpu_rate[${cpu_num}]}%" echo -n "${cpu_rate[${cpu_num}]}" >> ${cpu_rate_file} echo "------------------" echo "" >> ${cpu_rate_file} done
输出是逗号分隔符文件（.csv），可以用excel直接打开，方便数据分析和绘图等。| cpu0 | cpu1 | cpu2 | cpu3 | cpu4 | cpu5 | cpu6 | cpu7 | cpu8 | cpu9 | cpu10 | cpu11 | cpu12 | cpu13 | cpu14 | cpu15 | cpu16 | cpu17 | cpu18 | cpu19 | cpu20 | cpu21 | cpu22 | cpu23 | cpu_avg |
| 4 | 1 | 2 | 13 | 11 | 5 | 2 | 4 | 1 | 1 | 3 | 4 | 7 | 5 | 12 | 16 | 3 | 1 | 4 | 5 | 1 | 2 | 2 | 1 | 5 |
| 4 | 1 | 2 | 13 | 12 | 1 | 8 | 4 | 4 | 5 | 15 | 7 | 2 | 5 | 3 | 1 | 1 | 1 | 1 | 4 | 3 | 2 | 1 | 0 | 4 |
| 4 | 2 | 1 | 15 | 11 | 2 | 5 | 6 | 4 | 6 | 7 | 4 | 3 | 4 | 2 | 4 | 1 | 8 | 1 | 3 | 3 | 2 | 1 | 1 | 4 |
| 6 | 3 | 3 | 15 | 11 | 3 | 5 | 8 | 6 | 4 | 11 | 4 | 8 | 18 | 7 | 4 | 1 | 1 | 5 | 11 | 4 | 6 | 4 | 5 | 7 |
| 22 | 1 | 2 | 14 | 10 | 2 | 5 | 6 | 6 | 6 | 7 | 8 | 1 | 5 | 10 | 8 | 1 | 2 | 1 | 3 | 3 | 1 | 1 | 1 | 5 |
