diff options
Diffstat (limited to 'tools/power/cpupower/bench/benchmark.c')
| -rw-r--r-- | tools/power/cpupower/bench/benchmark.c | 48 |
1 files changed, 29 insertions, 19 deletions
diff --git a/tools/power/cpupower/bench/benchmark.c b/tools/power/cpupower/bench/benchmark.c index f538633..81b1c48 100644 --- a/tools/power/cpupower/bench/benchmark.c +++ b/tools/power/cpupower/bench/benchmark.c @@ -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; } } - |
