1#!/bin/bash
2
3# This program is free software: you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 2, or (at your option)
6# any later version.
7
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12
13# You should have received a copy of the GNU General Public License
14# along with this program; if not, write to the Free Software
15# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
16# 02110-1301, USA.
17
18# Author/Copyright(c): 2009, Thomas Renninger <trenn@suse.de>, Novell Inc.
19
20# Ondemand up_threshold and sampling rate test script for cpufreq-bench
21# mircobenchmark.
22# Modify the general variables at the top or extend or copy out parts
23# if you want to test other things
24#
25
26# Default with latest kernels is 95, before micro account patches
27# it was 80, cmp. with git commit 808009131046b62ac434dbc796
28UP_THRESHOLD="60 80 95"
29# Depending on the kernel and the HW sampling rate could be restricted
30# and cannot be set that low...
31# E.g. before git commit cef9615a853ebc4972084f7 one could only set
32# min sampling rate of 80000 if CONFIG_HZ=250
33SAMPLING_RATE="20000 80000"
34
35function measure()
36{
37    local -i up_threshold_set
38    local -i sampling_rate_set
39
40    for up_threshold in $UP_THRESHOLD;do
41	for sampling_rate in $SAMPLING_RATE;do
42	    # Set values in sysfs
43	    echo $up_threshold >/sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold
44	    echo $sampling_rate >/sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
45	    up_threshold_set=$(cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold)
46	    sampling_rate_set=$(cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate)
47
48	    # Verify set values in sysfs
49	    if [ ${up_threshold_set} -eq ${up_threshold} ];then
50		echo "up_threshold: $up_threshold, set in sysfs: ${up_threshold_set}"
51	    else
52		echo "WARNING: Tried to set up_threshold: $up_threshold, set in sysfs: ${up_threshold_set}"
53	    fi
54	    if [ ${sampling_rate_set} -eq ${sampling_rate} ];then
55		echo "sampling_rate: $sampling_rate, set in sysfs: ${sampling_rate_set}"
56	    else
57		echo "WARNING: Tried to set sampling_rate: $sampling_rate, set in sysfs: ${sampling_rate_set}"
58	    fi
59
60	    # Benchmark
61	    cpufreq-bench -o /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}
62	done
63    done
64}
65
66function create_plots()
67{
68    local command
69
70    for up_threshold in $UP_THRESHOLD;do
71	command="cpufreq-bench_plot.sh -o \"sampling_rate_${SAMPLING_RATE}_up_threshold_${up_threshold}\" -t \"Ondemand sampling_rate: ${SAMPLING_RATE} comparison - Up_threshold: $up_threshold %\""
72	for sampling_rate in $SAMPLING_RATE;do
73	    command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"sampling_rate = $sampling_rate\""
74	done
75	echo $command
76	eval "$command"
77	echo
78    done
79
80    for sampling_rate in $SAMPLING_RATE;do
81	command="cpufreq-bench_plot.sh -o \"up_threshold_${UP_THRESHOLD}_sampling_rate_${sampling_rate}\" -t \"Ondemand up_threshold: ${UP_THRESHOLD} % comparison - sampling_rate: $sampling_rate\""
82	for up_threshold in $UP_THRESHOLD;do
83	    command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"up_threshold = $up_threshold\""
84	done
85	echo $command
86	eval "$command"
87	echo
88    done
89
90    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\""
91    for sampling_rate in $SAMPLING_RATE;do
92	for up_threshold in $UP_THRESHOLD;do
93	    command="${command} /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}/* \"up_threshold = $up_threshold - sampling_rate = $sampling_rate\""
94	done
95    done
96    echo "$command"
97    eval "$command"
98}
99
100measure
101create_plots