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