#! /bin/bash

# estimate the power usage of the cpu using different
# frequency scaling governors

SLEEPTIME=1

estimate_core_wattage() {
	sudo cpupower frequency-set -g "$1"
	sleep 5
	echo "Estimating wattage for $1"
	for i in `seq 1 60`; do
		local pkg0_1=$(cat /sys/class/powercap/intel-rapl:0/energy_uj)
		local core_1=$(cat /sys/class/powercap/intel-rapl:0:0/energy_uj)
		local igpu_1=$(cat /sys/class/powercap/intel-rapl:0:1/energy_uj)
		sleep $SLEEPTIME
		local pkg0_2=$(cat /sys/class/powercap/intel-rapl:0/energy_uj)
		local core_2=$(cat /sys/class/powercap/intel-rapl:0:0/energy_uj)
		local igpu_2=$(cat /sys/class/powercap/intel-rapl:0:1/energy_uj)
		echo $(((pkg0_2-pkg0_1)/SLEEPTIME)) $(((core_2-core_1)/SLEEPTIME)) $(((igpu_2-igpu_1)/SLEEPTIME))
	done
}

estimate_core_wattage performance
estimate_core_wattage powersave
estimate_core_wattage schedutil
estimate_core_wattage conservative