shell 获取cpu使用率-ag真人游戏

1.shell脚本获取主机每颗cpu使用率的方法。

#!/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_avg" >> ${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

 2，获取单颗cpu使用率方法

使用方法 sh cpu.sh 0/1/2/3,需要传入一个参数，参数为第几颗cpu，第一颗从0开始。

#!/bin/bash
interval=2
numbers=`cat /proc/stat | grep cpu[0-9] -c`
if [ $# -ne 1 ];then
    exit 1
fi
if [ ${1} -lt ${numbers} ];then
    num=$1
    cpu_num=`expr ${1}   1`    
    start_idle=()
    start_total=()
    cpu_rate=()
    for((i=${num};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 ${interval}
    for((i=${num};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 - ${cpu_usage}`
        echo "${cpu_rate[$i]}"
#       echo "the cpu$cpu_num rate : ${cpu_rate[$i]}%"
    }
else
    exit 1
fi