add cpu rate collecting script

Author: Wangpan

cpu_rate.sh

@@ -0,0 +1,57 @@
+#!/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