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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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7fe2f6399a
CPU power consumption vs performance tuning is no longer limited to CPU frequency switching anymore: deep sleep states, traditional dynamic frequency scaling and hidden turbo/boost frequencies are tied close together and depend on each other. The first two exist on different architectures like PPC, Itanium and ARM, the latter (so far) only on X86. On X86 the APU (CPU+GPU) will only run most efficiently if CPU and GPU has proper power management in place. Users and Developers want to have *one* tool to get an overview what their system supports and to monitor and debug CPU power management in detail. The tool should compile and work on as many architectures as possible. Once this tool stabilizes a bit, it is intended to replace the Intel-specific tools in tools/power/x86 Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
101 lines
No EOL
4 KiB
Bash
101 lines
No EOL
4 KiB
Bash
#!/bin/bash
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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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 |