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cpupowerutils: bench - ConfigStyle bugfixes 

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Dominik Brodowski 2011-04-19 19:20:12 +02:00
parent f5ac0641d1
commit 02af3cb5aa
8 changed files with 75 additions and 58 deletions
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5
tools/power/cpupower/Makefile
View File

@ -38,7 +38,7 @@ NLS ?= true
CPUFRQ_BENCH ?= true
# Prefix to the directories we're installing to
DESTDIR ?=
DESTDIR ?=
# --- CONFIGURATION END ---
@ -277,5 +277,4 @@ uninstall:
rm -f $(DESTDIR)${localedir}/$$HLANG/LC_MESSAGES/cpupowerutils.mo; \
done;
.PHONY: all utils libcpufreq update-po create-gmo install-lib install-tools install-man install-gmo install uninstall \
clean
.PHONY: all utils libcpufreq update-po create-gmo install-lib install-tools install-man install-gmo install uninstall clean

48
tools/power/cpupower/bench/benchmark.c
View File

@ -37,7 +37,7 @@ if (config->output != stdout) { \
* compute how many rounds of calculation we should do
* to get the given load time
*
* @param load aimed load time in µs
* @param load aimed load time in µs
*
* @retval rounds of calculation
**/
@ -61,9 +61,8 @@ unsigned int calculate_timespace(long load, struct config *config)
timed = (unsigned int)(then - now);
/* approximation of the wanted load time by comparing with the
* initial calculation time */
for (i= 0; i < 4; i++)
{
* initial calculation time */
for (i = 0; i < 4; i++) {
rounds = (unsigned int)(load * estimated / timed);
dprintf("calibrating with %u rounds\n", rounds);
now = get_time();
@ -102,11 +101,11 @@ void start_benchmark(struct config *config)
load_time = config->load;
/* For the progress bar */
for (_round=1; _round <= config->rounds; _round++)
for (_round = 1; _round <= config->rounds; _round++)
total_time += _round * (config->sleep + config->load);
total_time *= 2; /* powersave and performance cycles */
for (_round=0; _round < config->rounds; _round++) {
for (_round = 0; _round < config->rounds; _round++) {
performance_time = 0LL;
powersave_time = 0LL;
@ -130,9 +129,10 @@ void start_benchmark(struct config *config)
fprintf(config->output, "%u %li %li ",
_round, load_time, sleep_time);
if (config->verbose) {
printf("avarage: %lius, rps:%li\n", load_time / calculations, 1000000 * calculations / load_time);
}
if (config->verbose)
printf("avarage: %lius, rps:%li\n",
load_time / calculations,
1000000 * calculations / load_time);
/* do some sleep/load cycles with the performance governor */
for (cycle = 0; cycle < config->cycles; cycle++) {
@ -142,10 +142,14 @@ void start_benchmark(struct config *config)
then = get_time();
performance_time += then - now - sleep_time;
if (config->verbose)
printf("performance cycle took %lius, sleep: %lius, load: %lius, rounds: %u\n",
(long)(then - now), sleep_time, load_time, calculations);
printf("performance cycle took %lius, "
"sleep: %lius, "
"load: %lius, rounds: %u\n",
(long)(then - now), sleep_time,
load_time, calculations);
}
fprintf(config->output, "%li ", performance_time / config->cycles);
fprintf(config->output, "%li ",
performance_time / config->cycles);
progress_time += sleep_time + load_time;
show_progress(total_time, progress_time);
@ -155,7 +159,8 @@ void start_benchmark(struct config *config)
if (set_cpufreq_governor(config->governor, config->cpu) != 0)
return;
/* again, do some sleep/load cycles with the powersave governor */
/* again, do some sleep/load cycles with the
* powersave governor */
for (cycle = 0; cycle < config->cycles; cycle++) {
now = get_time();
usleep(sleep_time);
@ -163,22 +168,27 @@ void start_benchmark(struct config *config)
then = get_time();
powersave_time += then - now - sleep_time;
if (config->verbose)
printf("powersave cycle took %lius, sleep: %lius, load: %lius, rounds: %u\n",
(long)(then - now), sleep_time, load_time, calculations);
printf("powersave cycle took %lius, "
"sleep: %lius, "
"load: %lius, rounds: %u\n",
(long)(then - now), sleep_time,
load_time, calculations);
}
progress_time += sleep_time + load_time;
/* compare the avarage sleep/load cycles */
fprintf(config->output, "%li ", powersave_time / config->cycles);
fprintf(config->output, "%.3f\n", performance_time * 100.0 / powersave_time);
fprintf(config->output, "%li ",
powersave_time / config->cycles);
fprintf(config->output, "%.3f\n",
performance_time * 100.0 / powersave_time);
fflush(config->output);
if (config->verbose)
printf("performance is at %.2f%%\n", performance_time * 100.0 / powersave_time);
printf("performance is at %.2f%%\n",
performance_time * 100.0 / powersave_time);
sleep_time += config->sleep_step;
load_time += config->load_step;
}
}

8
tools/power/cpupower/bench/benchmark.h
View File

@ -19,9 +19,11 @@
/* load loop, this schould take about 1 to 2ms to complete */
#define ROUNDS(x) {unsigned int rcnt; \
for (rcnt = 0; rcnt< x*1000; rcnt++) { \
(void)(((int)(pow(rcnt, rcnt) * sqrt(rcnt*7230970)) ^ 7230716) ^ (int)atan2(rcnt, rcnt)); \
}} \
for (rcnt = 0; rcnt < x*1000; rcnt++) { \
(void)(((int)(pow(rcnt, rcnt) * \
sqrt(rcnt*7230970)) ^ 7230716) ^ \
(int)atan2(rcnt, rcnt)); \
} } \
void start_benchmark(struct config *config);

2
tools/power/cpupower/bench/config.h
View File

@ -31,6 +31,6 @@
#ifdef DEBUG
#define dprintf printf
#else
#define dprintf( ... ) while(0) { }
#define dprintf(...) do { } while (0)
#endif

7
tools/power/cpupower/bench/main.c
View File

@ -28,8 +28,7 @@
#include "system.h"
#include "benchmark.h"
static struct option long_options[] =
{
static struct option long_options[] = {
{"output", 1, 0, 'o'},
{"sleep", 1, 0, 's'},
{"load", 1, 0, 'l'},
@ -50,7 +49,7 @@ static struct option long_options[] =
usage
*******************************************************************/
void usage()
void usage()
{
printf("usage: ./bench\n");
printf("Options:\n");
@ -67,7 +66,7 @@ void usage()
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);
exit(1);
}
/*******************************************************************

37
tools/power/cpupower/bench/parse.c
View File

@ -86,20 +86,22 @@ FILE *prepare_output(const char *dirname)
len += strlen(sysdata.nodename) + strlen(sysdata.release);
filename = realloc(filename, sizeof(char) * len);
if(filename == NULL) {
if (filename == NULL) {
perror("realloc");
return NULL;
}
snprintf(filename, len - 1, "%s/benchmark_%s_%s_%li.log",
snprintf(filename, len - 1, "%s/benchmark_%s_%s_%li.log",
dirname, sysdata.nodename, sysdata.release, time(NULL));
} else {
snprintf(filename, len -1, "%s/benchmark_%li.log", dirname, time(NULL));
snprintf(filename, len - 1, "%s/benchmark_%li.log",
dirname, time(NULL));
}
dprintf("logilename: %s\n", filename);
if ((output = fopen(filename, "w+")) == NULL) {
output = fopen(filename, "w+");
if (output == NULL) {
perror("fopen");
fprintf(stderr, "error: unable to open logfile\n");
}
@ -130,7 +132,7 @@ struct config *prepare_default_config()
config->load_step = 500000;
config->cycles = 5;
config->rounds = 50;
config->cpu = 0;
config->cpu = 0;
config->prio = SCHED_HIGH;
config->verbose = 0;
strncpy(config->governor, "ondemand", 8);
@ -166,13 +168,12 @@ int prepare_config(const char *path, struct config *config)
if (configfile == NULL) {
perror("fopen");
fprintf(stderr, "error: unable to read configfile\n");
fprintf(stderr, "error: unable to read configfile\n");
free(config);
return 1;
}
while (getline(&line, &len, configfile) != -1)
{
while (getline(&line, &len, configfile) != -1) {
if (line[0] == '#' || line[0] == ' ')
continue;
@ -183,35 +184,35 @@ int prepare_config(const char *path, struct config *config)
if (strncmp("sleep", opt, strlen(opt)) == 0)
sscanf(val, "%li", &config->sleep);
else if (strncmp("load", opt, strlen(opt)) == 0)
else if (strncmp("load", opt, strlen(opt)) == 0)
sscanf(val, "%li", &config->load);
else if (strncmp("load_step", opt, strlen(opt)) == 0)
else if (strncmp("load_step", opt, strlen(opt)) == 0)
sscanf(val, "%li", &config->load_step);
else if (strncmp("sleep_step", opt, strlen(opt)) == 0)
else if (strncmp("sleep_step", opt, strlen(opt)) == 0)
sscanf(val, "%li", &config->sleep_step);
else if (strncmp("cycles", opt, strlen(opt)) == 0)
else if (strncmp("cycles", opt, strlen(opt)) == 0)
sscanf(val, "%u", &config->cycles);
else if (strncmp("rounds", opt, strlen(opt)) == 0)
else if (strncmp("rounds", opt, strlen(opt)) == 0)
sscanf(val, "%u", &config->rounds);
else if (strncmp("verbose", opt, strlen(opt)) == 0)
else if (strncmp("verbose", opt, strlen(opt)) == 0)
sscanf(val, "%u", &config->verbose);
else if (strncmp("output", opt, strlen(opt)) == 0)
else if (strncmp("output", opt, strlen(opt)) == 0)
config->output = prepare_output(val);
else if (strncmp("cpu", opt, strlen(opt)) == 0)
else if (strncmp("cpu", opt, strlen(opt)) == 0)
sscanf(val, "%u", &config->cpu);
else if (strncmp("governor", opt, 14) == 0)
else if (strncmp("governor", opt, 14) == 0)
strncpy(config->governor, val, 14);
else if (strncmp("priority", opt, strlen(opt)) == 0) {
if (string_to_prio(val) != SCHED_ERR)
if (string_to_prio(val) != SCHED_ERR)
config->prio = string_to_prio(val);
}
}

13
tools/power/cpupower/bench/parse.h
View File

@ -20,19 +20,22 @@
/* struct that holds the required config parameters */
struct config
{
long sleep; /* sleep time in µs */
long load; /* load time in µs */
long sleep; /* sleep time in µs */
long load; /* load time in µs */
long sleep_step; /* time value which changes the
* sleep time after every round in µs */
* sleep time after every round in µs */
long load_step; /* time value which changes the
* load time after every round in µs */
* load time after every round in µs */
unsigned int cycles; /* calculation cycles with the same sleep/load time */
unsigned int rounds; /* calculation rounds with iterated sleep/load time */
unsigned int cpu; /* cpu for which the affinity is set */
char governor[15]; /* cpufreq governor */
enum sched_prio /* possible scheduler priorities */
{
SCHED_ERR=-1,SCHED_HIGH, SCHED_DEFAULT, SCHED_LOW
SCHED_ERR = -1,
SCHED_HIGH,
SCHED_DEFAULT,
SCHED_LOW
} prio;
unsigned int verbose; /* verbose output */

13
tools/power/cpupower/bench/system.c
View File

@ -31,7 +31,7 @@
#include "system.h"
/**
* returns time since epoch in µs
* returns time since epoch in µs
*
* @retval time
**/
@ -87,7 +87,7 @@ int set_cpufreq_governor(char *governor, unsigned int cpu)
int set_cpu_affinity(unsigned int cpu)
{
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
CPU_SET(cpu, &cpuset);
@ -129,7 +129,7 @@ int set_process_priority(int priority)
}
/**
* notifys the user that the benchmark may run some time
* notifies the user that the benchmark may run some time
*
* @param config benchmark config values
*
@ -142,8 +142,11 @@ void prepare_user(const struct config *config)
unsigned int round;
for (round = 0; round < config->rounds; round++) {
sleep_time += 2 * config->cycles * (config->sleep + config->sleep_step * round);
load_time += 2 * config->cycles * (config->load + config->load_step * round) + (config->load + config->load_step * round * 4);
sleep_time += 2 * config->cycles *
(config->sleep + config->sleep_step * round);
load_time += 2 * config->cycles *
(config->load + config->load_step * round) +
(config->load + config->load_step * round * 4);
}
if (config->verbose || config->output != stdout)