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