Messages in this thread Patch in this message | | | From | Davidlohr Bueso <> | Subject | [PATCH 2/9] perf bench: sched-messaging: Redo runtime output | Date | Mon, 16 Jun 2014 11:14:20 -0700 |
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Instead of printing sec and usec individually, simplify into a 'runtime' variable to later use accordingly. This is particularly helpful when later adding multiple runs and collecting statistics.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> --- tools/perf/bench/sched-messaging.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/tools/perf/bench/sched-messaging.c b/tools/perf/bench/sched-messaging.c index cc1190a..df0828a 100644 --- a/tools/perf/bench/sched-messaging.c +++ b/tools/perf/bench/sched-messaging.c @@ -269,9 +269,9 @@ static const char * const bench_sched_message_usage[] = { int bench_sched_messaging(int argc, const char **argv, const char *prefix __maybe_unused) { - unsigned int i, total_children; + unsigned int i, total_children, num_fds = 20; struct timeval start, stop, diff; - unsigned int num_fds = 20; + unsigned long runtime; int readyfds[2], wakefds[2]; char dummy; pthread_t *pth_tab; @@ -307,8 +307,8 @@ int bench_sched_messaging(int argc, const char **argv, reap_worker(pth_tab[i]); gettimeofday(&stop, NULL); - timersub(&stop, &start, &diff); + runtime = (diff.tv_sec * 1e3) + (diff.tv_usec/1e3); switch (bench_format) { case BENCH_FORMAT_DEFAULT: @@ -317,13 +317,10 @@ int bench_sched_messaging(int argc, const char **argv, printf("# %d groups == %d %s run\n\n", num_groups, num_groups * 2 * num_fds, thread_mode ? "threads" : "processes"); - printf(" %14s: %lu.%03lu [sec]\n", "Total time", - diff.tv_sec, - (unsigned long) (diff.tv_usec/1000)); + printf(" %14s: %.3f [sec]\n", "Total time", runtime/1e3); break; case BENCH_FORMAT_SIMPLE: - printf("%lu.%03lu\n", diff.tv_sec, - (unsigned long) (diff.tv_usec/1000)); + printf("%.3f\n", runtime/1e3); break; default: /* reaching here is something disaster */ -- 1.8.1.4
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