1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0-or-later 3 4 5# Author/Copyright(c): 2009, Thomas Renninger <trenn@suse.de>, Novell Inc. 6 7# Ondemand up_threshold and sampling rate test script for cpufreq-bench 8# mircobenchmark. 9# Modify the general variables at the top or extend or copy out parts 10# if you want to test other things 11# 12 13# Default with latest kernels is 95, before micro account patches 14# it was 80, cmp. with git commit 808009131046b62ac434dbc796 15UP_THRESHOLD="60 80 95" 16# Depending on the kernel and the HW sampling rate could be restricted 17# and cannot be set that low... 18# E.g. before git commit cef9615a853ebc4972084f7 one could only set 19# min sampling rate of 80000 if CONFIG_HZ=250 20SAMPLING_RATE="20000 80000" 21 22function measure() 23{ 24 local -i up_threshold_set 25 local -i sampling_rate_set 26 27 for up_threshold in $UP_THRESHOLD;do 28 for sampling_rate in $SAMPLING_RATE;do 29 # Set values in sysfs 30 echo $up_threshold >/sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold 31 echo $sampling_rate >/sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate 32 up_threshold_set=$(cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold) 33 sampling_rate_set=$(cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate) 34 35 # Verify set values in sysfs 36 if [ ${up_threshold_set} -eq ${up_threshold} ];then 37 echo "up_threshold: $up_threshold, set in sysfs: ${up_threshold_set}" 38 else 39 echo "WARNING: Tried to set up_threshold: $up_threshold, set in sysfs: ${up_threshold_set}" 40 fi 41 if [ ${sampling_rate_set} -eq ${sampling_rate} ];then 42 echo "sampling_rate: $sampling_rate, set in sysfs: ${sampling_rate_set}" 43 else 44 echo "WARNING: Tried to set sampling_rate: $sampling_rate, set in sysfs: ${sampling_rate_set}" 45 fi 46 47 # Benchmark 48 cpufreq-bench -o /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate} 49 done 50 done 51} 52 53function create_plots() 54{ 55 local command 56 57 for up_threshold in $UP_THRESHOLD;do 58 command="cpufreq-bench_plot.sh -o \"sampling_rate_${SAMPLING_RATE}_up_threshold_${up_threshold}\" -t \"Ondemand sampling_rate: ${SAMPLING_RATE} comparison - Up_threshold: $up_threshold %\"" 59 for sampling_rate in $SAMPLING_RATE;do 60 command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"sampling_rate = $sampling_rate\"" 61 done 62 echo $command 63 eval "$command" 64 echo 65 done 66 67 for sampling_rate in $SAMPLING_RATE;do 68 command="cpufreq-bench_plot.sh -o \"up_threshold_${UP_THRESHOLD}_sampling_rate_${sampling_rate}\" -t \"Ondemand up_threshold: ${UP_THRESHOLD} % comparison - sampling_rate: $sampling_rate\"" 69 for up_threshold in $UP_THRESHOLD;do 70 command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"up_threshold = $up_threshold\"" 71 done 72 echo $command 73 eval "$command" 74 echo 75 done 76 77 command="cpufreq-bench_plot.sh -o \"up_threshold_${UP_THRESHOLD}_sampling_rate_${SAMPLING_RATE}\" -t \"Ondemand up_threshold: ${UP_THRESHOLD} and sampling_rate ${SAMPLING_RATE} comparison\"" 78 for sampling_rate in $SAMPLING_RATE;do 79 for up_threshold in $UP_THRESHOLD;do 80 command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"up_threshold = $up_threshold - sampling_rate = $sampling_rate\"" 81 done 82 done 83 echo "$command" 84 eval "$command" 85} 86 87measure 88create_plots 89