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#!/bin/sh
set -e
test_efficiency() {
FILENAME="results_$RANDOM$$.txt"
if [ -e /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors ]; then
for i in $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors); do
if [ $i = $1 ] ; then
gov_target=$i
fi
export gov_$i=$(echo $i)
done
else
echo "cpufreq sysfs is not available!"
exit
fi
if [ ! $gov_target ] ; then
echo " Can't find $1 governor!"
exit
fi
if [ ! $gov_performance ] ; then
echo "Can't find performance governor!"
exit
fi
if [ ! $gov_powersave ] ; then
echo "Can't find powersave governor!"
exit
fi
if [ $gov_target = $gov_performance ] || [ $gov_target = $gov_powersave ] ; then
echo "Please input a governor other than \"performance\" or \"powersave\""
exit
fi
# Get target gov data first
dvfs.sh $1 $2 $3 $4 $5 > $FILENAME
target=$(cat $FILENAME |sed -n '$p' | cut -d " " -f 1)
over_target=$(cat $FILENAME |sed -n '$p' | cut -d " " -f 2)
# Get performance data
dvfs.sh performance $2 $3 $4 $5 > $FILENAME
performance=$(cat $FILENAME |sed -n '$p' | cut -d " " -f 1)
over_perf=$(cat $FILENAME |sed -n '$p' | cut -d " " -f 2)
# Get powersave data
dvfs.sh powersave $2 $3 $4 $5 > $FILENAME
powersave=$(cat $FILENAME |sed -n '$p' | cut -d " " -f 1)
over_save=$(cat $FILENAME |sed -n '$p' | cut -d " " -f 2)
if [ $performance -ge $powersave ] ; then
echo "powersave: $powersave"
echo "performance: $performance"
echo "Error! performance spent more time than powersave!"
exit
fi
echo "\"powersave\" efficiency: 0% overrun: "$over_save
echo "\"performance\" efficiency: 100% overrun: "$over_perf
denominator=$(expr $powersave - $performance)
if [ $powersave -le $target ]; then
target=0
else
numerator=$(expr $powersave - $target)
numerator=$(expr $numerator \* 100)
target=$(expr $numerator / $denominator)
if [ $target -gt 100 ]; then
target=100
fi
fi
echo "\"$gov_target\" efficiency: $target% overrun: "$over_target
rm -f $FILENAME
}
if [ $# -lt 4 ]; then
echo "Usage: ./test.sh <governor> <cpu> <runtime> <sleeptime> [<loops>]"
echo "governor: target CPUFreq governor you want to test"
echo "cpu: cpu number on which you want to run the test"
echo "runtime: running time in ms per loop of the workload pattern"
echo "sleeptime: sleeping time in ms per loop of the workload pattern"
echo "loops: repeat times of the workload pattern. default: 10"
echo "\nExample:\n\"./test.sh ondemand 0 100 100 20\" means\nTest \"ondemand\" on CPU0 with workload pattern \"run 100ms + sleep 100ms\"(20 loops).\n"
exit
fi
if [ $# = 4 ]; then
loops=10
else
loops=$5
fi
echo "Test \"$1\" on CPU$2 with workload pattern \"run $3ms + sleep $4ms\"($loops loops)."
sleep 1
PATH=$PATH:.
test_efficiency $1 $2 $(expr $3 \* 1000) $(expr $4 \* 1000) $loops
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