#!/bin/sh
awk '{print "\nCurrent frequency: "$1/1000" MHz\n"}' /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
awk '{print "Minimum frequency: "$1/1000" MHz\n"}' /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
awk '{print "Maximum frequency: "$1/1000" MHz\n"}' /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

tis1=`awk '{SUM += $2} END {printf("%.0f",SUM/1000)}' /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state`

idle0=`awk '{printf ("%.0f",$1/1000)}' /sys/devices/system/cpu/cpu0/cpuidle/state0/time`

idle1=`awk '{printf ("%.0f",$1/1000)}' /sys/devices/system/cpu/cpu0/cpuidle/state1/time`

idle2=`awk '{printf ("%.0f",$1/1000)}' /sys/devices/system/cpu/cpu0/cpuidle/state2/time`

idle3=`awk '{printf ("%.0f",$1/1000)}' /sys/devices/system/cpu/cpu0/cpuidle/state3/time`

totaltime=$(($idle0+$idle1+$idle2+$idle3+$tis1))
echo -e "FREQUENCY\tUSED"
SUM=0
awk '
       {
               printf (($1/1000)" MHz \t");
               if ($2 == 0)
               {
                       printf "0 %\n";
               }
               else {
                       SUM+=$2;
                       printf("%.3f %\n",($2/10)/"'"$totaltime"'");
                       }
       }
       END{
       printf ("Time spent in idle mode is %2.2f %\n",(1-((SUM/1000)/"'"$totaltime"'"))*100);
       }' /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state
echo ""