#!/bin/dash

# Edit this file for your paths and your processor
#
# With the intel pstate driver and a i7-2600K processor and turbo on
# the min percent is 42
# For a Haswell processor the min percent will be 20
echo "Intel new Pstate Energy loop. Doug Smythies 2014.06.27"
if [ -n "$1" ];then
        sed -i "s/define CALIBRATION.*$/define CALIBRATION $1/" ./consume1.c
fi

echo "CALIBRATION:"
echo "  $(cat ./consume1.c|grep 'define CALIBRATION')"
cc ./consume1.c -o ./consume1
MAX=$(cat /sys/devices/system/cpu/intel_pstate/max_perf_pct)
MIN=$(cat /sys/devices/system/cpu/intel_pstate/min_perf_pct)
COUNTER=$MIN
while [ $COUNTER -lt 101 ];
do
   echo "$COUNTER" > /sys/devices/system/cpu/intel_pstate/max_perf_pct
# force min also
   echo "$COUNTER" > /sys/devices/system/cpu/intel_pstate/min_perf_pct
# Don't force min also, but set it anyhow, in case I forgot.
#   echo 42 > /sys/devices/system/cpu/intel_pstate/min_perf_pct
# Sleep probably not needed.
   sleep 1
# If higher work / sleep frequencies are used then calibration (done at 5 hertz)
# will be off and there will be overruns at min pstate.
# It is not that important
  ./turbostat -S -J ./consume1 100 5 10
#  ./turbostat -S -J ../c/consume1 100 200 10
   COUNTER=$((COUNTER+2))
done
echo $MIN > /sys/devices/system/cpu/intel_pstate/min_perf_pct
echo $MAX > /sys/devices/system/cpu/intel_pstate/max_perf_pct