name : cpufreq-bench_script.sh #!/bin/bash # SPDX-License-Identifier: GPL-2.0-or-later # Author/Copyright(c): 2009, Thomas Renninger <trenn@suse.de>, Novell Inc. # Ondemand up_threshold and sampling rate test script for cpufreq-bench # mircobenchmark. # Modify the general variables at the top or extend or copy out parts # if you want to test other things # # Default with latest kernels is 95, before micro account patches # it was 80, cmp. with git commit 808009131046b62ac434dbc796 UP_THRESHOLD="60 80 95" # Depending on the kernel and the HW sampling rate could be restricted # and cannot be set that low... # E.g. before git commit cef9615a853ebc4972084f7 one could only set # min sampling rate of 80000 if CONFIG_HZ=250 SAMPLING_RATE="20000 80000" function measure() { local -i up_threshold_set local -i sampling_rate_set for up_threshold in $UP_THRESHOLD;do for sampling_rate in $SAMPLING_RATE;do # Set values in sysfs echo $up_threshold >/sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold echo $sampling_rate >/sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate up_threshold_set=$(cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold) sampling_rate_set=$(cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate) # Verify set values in sysfs if [ ${up_threshold_set} -eq ${up_threshold} ];then echo "up_threshold: $up_threshold, set in sysfs: ${up_threshold_set}" else echo "WARNING: Tried to set up_threshold: $up_threshold, set in sysfs: ${up_threshold_set}" fi if [ ${sampling_rate_set} -eq ${sampling_rate} ];then echo "sampling_rate: $sampling_rate, set in sysfs: ${sampling_rate_set}" else echo "WARNING: Tried to set sampling_rate: $sampling_rate, set in sysfs: ${sampling_rate_set}" fi # Benchmark cpufreq-bench -o /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate} done done } function create_plots() { local command for up_threshold in $UP_THRESHOLD;do command="cpufreq-bench_plot.sh -o \"sampling_rate_${SAMPLING_RATE}_up_threshold_${up_threshold}\" -t \"Ondemand sampling_rate: ${SAMPLING_RATE} comparison - Up_threshold: $up_threshold %\"" for sampling_rate in $SAMPLING_RATE;do command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"sampling_rate = $sampling_rate\"" done echo $command eval "$command" echo done for sampling_rate in $SAMPLING_RATE;do command="cpufreq-bench_plot.sh -o \"up_threshold_${UP_THRESHOLD}_sampling_rate_${sampling_rate}\" -t \"Ondemand up_threshold: ${UP_THRESHOLD} % comparison - sampling_rate: $sampling_rate\"" for up_threshold in $UP_THRESHOLD;do command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"up_threshold = $up_threshold\"" done echo $command eval "$command" echo done 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\"" for sampling_rate in $SAMPLING_RATE;do for up_threshold in $UP_THRESHOLD;do command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"up_threshold = $up_threshold - sampling_rate = $sampling_rate\"" done done echo "$command" eval "$command" } measure create_plots