1.獲取cpu相關資訊

#cpu個數

cpuCount=`cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l`

#cpu核數

cpuNucleus=`cat /proc/cpuinfo| grep "cpu cores"| uniq | awk -F ':' '{print $2}'`

#cpu總核數

cpuTotalNucleus=$(echo "$cpuCount*$cpuNucleus"|bc)

#cpu執行緒數

cpuThreadCount=`cat /proc/cpuinfo| grep "processor"| wc -l`

#cpu型號

modelName=`grep 'model name' /proc/cpuinfo | sed -n '$p' | awk -F ':' '{print $2}'`

#cpu使用率

#CPU時間計算公式：CPU_TIME=user+system+nice+idle+iowait+irq+softirq

#CPU使用率計算公式：cpu_usage=(idle2-idle1)/(cpu2-cpu1)*100

#預設時間間隔

TIME_INTERVAL=5

time=$(date "+%Y-%m-%d %H:%M:%S")

LAST_CPU_INFO=$(cat /proc/stat | grep -w cpu | awk '{print $2,$3,$4,$5,$6,$7,$8}')

LAST_SYS_IDLE=$(echo $LAST_CPU_INFO | awk '{print $4}')

LAST_TOTAL_CPU_T=$(echo $LAST_CPU_INFO | awk '{print $1+$2+$3+$4+$5+$6+$7}')

sleep ${TIME_INTERVAL}

NEXT_CPU_INFO=$(cat /proc/stat | grep -w cpu | awk '{print $2,$3,$4,$5,$6,$7,$8}')

NEXT_SYS_IDLE=$(echo $NEXT_CPU_INFO | awk '{print $4}')

NEXT_TOTAL_CPU_T=$(echo $NEXT_CPU_INFO | awk '{print $1+$2+$3+$4+$5+$6+$7}')

#系統空閒時間

SYSTEM_IDLE=`echo ${NEXT_SYS_IDLE} ${LAST_SYS_IDLE} | awk '{print $1-$2}'`

#CPU總時間

TOTAL_TIME=`echo ${NEXT_TOTAL_CPU_T} ${LAST_TOTAL_CPU_T} | awk '{print $1-$2}'`

#CPU使用率

CPU_USAGE=`echo ${SYSTEM_IDLE} ${TOTAL_TIME} | awk '{printf "%.2f", 100-$1/$2*100}'`

2.記憶體相關資訊統計

#總記憶體大小

mem_total=`free -m | sed -n '2p' |awk '{print $2}'`

#已使用記憶體

mem_used=`free -m | sed -n '2p' |awk '{print $3}'`

#剩餘記憶體

mem_free=`free -m |sed -n '2p' |awk '{print $4}'`

#使用記憶體百分比

Percent_mem_used=`echo "scale=2; $mem_used / $mem_total *100" | bc`

#剩餘記憶體百分比

Percent_mem_free=`echo "scale=2; $mem_free / $mem_total *100" | bc`