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/* cpufreq-bench CPUFreq microbenchmark
*
* Copyright (C) 2008 Christian Kornacker <ckornacker@suse.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include "config.h"
#include "system.h"
#include "benchmark.h"
static struct option long_options[] =
{
{"output", 1, 0, 'o'},
{"sleep", 1, 0, 's'},
{"load", 1, 0, 'l'},
{"verbose", 0, 0, 'v'},
{"cpu", 1, 0, 'c'},
{"governor", 1, 0, 'g'},
{"prio", 1, 0, 'p'},
{"file", 1, 0, 'f'},
{"cycles", 1, 0, 'n'},
{"rounds", 1, 0, 'r'},
{"load-step", 1, 0, 'x'},
{"sleep-step", 1, 0, 'y'},
{"help", 0, 0, 'h'},
{0, 0, 0, 0}
};
/*******************************************************************
usage
*******************************************************************/
void usage()
{
printf("usage: ./bench\n");
printf("Options:\n");
printf(" -l, --load=<long int>\t\tinitial load time in us\n");
printf(" -s, --sleep=<long int>\t\tinitial sleep time in us\n");
printf(" -x, --load-step=<long int>\ttime to be added to load time, in us\n");
printf(" -y, --sleep-step=<long int>\ttime to be added to sleep time, in us\n");
printf(" -c, --cpu=<cpu #>\t\t\tCPU Nr. to use, starting at 0\n");
printf(" -p, --prio=<priority>\t\t\tscheduler priority, HIGH, LOW or DEFAULT\n");
printf(" -g, --governor=<governor>\t\tcpufreq governor to test\n");
printf(" -n, --cycles=<int>\t\t\tload/sleep cycles\n");
printf(" -r, --rounds<int>\t\t\tload/sleep rounds\n");
printf(" -f, --file=<configfile>\t\tconfig file to use\n");
printf(" -o, --output=<dir>\t\t\toutput path. Filename will be OUTPUTPATH/benchmark_TIMESTAMP.log\n");
printf(" -v, --verbose\t\t\t\tverbose output on/off\n");
printf(" -h, --help\t\t\t\tPrint this help screen\n");
exit (1);
}
/*******************************************************************
main
*******************************************************************/
int main(int argc, char **argv)
{
int c;
int option_index = 0;
struct config *config = NULL;
config = prepare_default_config();
if (config == NULL)
return EXIT_FAILURE;
while (1) {
c = getopt_long (argc, argv, "hg:o:s:l:vc:p:f:n:r:x:y:",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'o':
if (config->output != NULL)
fclose(config->output);
config->output = prepare_output(optarg);
if (config->output == NULL)
return EXIT_FAILURE;
dprintf("user output path -> %s\n", optarg);
break;
case 's':
sscanf(optarg, "%li", &config->sleep);
dprintf("user sleep time -> %s\n", optarg);
break;
case 'l':
sscanf(optarg, "%li", &config->load);
dprintf("user load time -> %s\n", optarg);
break;
case 'c':
sscanf(optarg, "%u", &config->cpu);
dprintf("user cpu -> %s\n", optarg);
break;
case 'g':
strncpy(config->governor, optarg, 14);
dprintf("user governor -> %s\n", optarg);
break;
case 'p':
if (string_to_prio(optarg) != SCHED_ERR) {
config->prio = string_to_prio(optarg);
dprintf("user prio -> %s\n", optarg);
} else {
if (config != NULL) {
if (config->output != NULL)
fclose(config->output);
free(config);
}
usage();
}
break;
case 'n':
sscanf(optarg, "%u", &config->cycles);
dprintf("user cycles -> %s\n", optarg);
break;
case 'r':
sscanf(optarg, "%u", &config->rounds);
dprintf("user rounds -> %s\n", optarg);
break;
case 'x':
sscanf(optarg, "%li", &config->load_step);
dprintf("user load_step -> %s\n", optarg);
break;
case 'y':
sscanf(optarg, "%li", &config->sleep_step);
dprintf("user sleep_step -> %s\n", optarg);
break;
case 'f':
if (prepare_config(optarg, config))
return EXIT_FAILURE;
break;
case 'v':
config->verbose = 1;
dprintf("verbose output enabled\n");
break;
case 'h':
case '?':
default:
if (config != NULL) {
if (config->output != NULL)
fclose(config->output);
free(config);
}
usage();
}
}
if (config->verbose) {
printf("starting benchmark with parameters:\n");
printf("config:\n\t"
"sleep=%li\n\t"
"load=%li\n\t"
"sleep_step=%li\n\t"
"load_step=%li\n\t"
"cpu=%u\n\t"
"cycles=%u\n\t"
"rounds=%u\n\t"
"governor=%s\n\n",
config->sleep,
config->load,
config->sleep_step,
config->load_step,
config->cpu,
config->cycles,
config->rounds,
config->governor);
}
prepare_user(config);
prepare_system(config);
start_benchmark(config);
if (config->output != stdout)
fclose(config->output);
free(config);
return EXIT_SUCCESS;
}
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