tools/power/cpupower/bench/cpufreq-bench_script.sh

   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
  15 UP_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
  20 SAMPLING_RATE="20000 80000"
  21
  22 function 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
  53 function 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
  87 measure
  88 create_plots