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[perf] Drop ticks from trace benchmarks

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Don't report the tick values for the macro-benchmarks as these are so
large as to be meaningless.
This commit is contained in:
Chris Wilson 2009-06-03 13:26:52 +01:00
parent c988dc3719
commit 9451f0b983
1 changed files with 20 additions and 17 deletions
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37
perf/cairo-perf-trace.c
View file

@ -52,8 +52,9 @@
#include <sched.h>
#endif
#define CAIRO_PERF_ITERATIONS_DEFAULT 10
#define CAIRO_PERF_LOW_STD_DEV 0.3
#define CAIRO_PERF_ITERATIONS_DEFAULT 15
#define CAIRO_PERF_LOW_STD_DEV 0.05
#define CAIRO_PERF_MIN_STD_DEV_COUNT 3
#define CAIRO_PERF_STABLE_STD_DEV_COUNT 3
/* Some targets just aren't that interesting for performance testing,
@ -183,8 +184,8 @@ execute (cairo_perf_t *perf,
if (perf->summary) {
fprintf (perf->summary,
"[ # ] %8s %28s %8s %8s %5s %5s %s\n",
"backend", "test", "min(ticks)", "min(ms)", "median(ms)",
"[ # ] %8s %28s %8s %5s %5s %s\n",
"backend", "test", "min(s)", "median(s)",
"stddev.", "iterations");
}
first_run = FALSE;
@ -194,7 +195,7 @@ execute (cairo_perf_t *perf,
if (perf->summary) {
fprintf (perf->summary,
"[%3d] %8s %26s ",
"[%3d] %8s %28s ",
perf->test_number,
perf->target->name,
name);
@ -204,7 +205,7 @@ execute (cairo_perf_t *perf,
cairo_script_interpreter_install_hooks (csi, &hooks);
low_std_dev_count = 0;
for (i =0; i < perf->iterations; i++) {
for (i = 0; i < perf->iterations; i++) {
cairo_perf_yield ();
cairo_perf_timer_start ();
@ -223,13 +224,13 @@ execute (cairo_perf_t *perf,
0,
cairo_perf_ticks_per_second () / 1000.0);
printf (" %lld", (long long) times[i]);
fflush (stdout);
} else if (! perf->exact_iterations) {
if (i > 0) {
if (i > CAIRO_PERF_MIN_STD_DEV_COUNT) {
_cairo_stats_compute (&stats, times, i+1);
if (stats.std_dev <= CAIRO_PERF_LOW_STD_DEV) {
low_std_dev_count++;
if (low_std_dev_count >= CAIRO_PERF_STABLE_STD_DEV_COUNT)
if (++low_std_dev_count >= CAIRO_PERF_STABLE_STD_DEV_COUNT)
break;
} else {
low_std_dev_count = 0;
@ -238,20 +239,22 @@ execute (cairo_perf_t *perf,
}
}
if (perf->raw)
printf ("\n");
if (perf->summary) {
_cairo_stats_compute (&stats, times, i);
fprintf (perf->summary,
"%10lld %#8.3f %#8.3f %#5.2f%% %3d\n",
(long long) stats.min_ticks,
(stats.min_ticks * 1000.0) / cairo_perf_ticks_per_second (),
(stats.median_ticks * 1000.0) / cairo_perf_ticks_per_second (),
stats.std_dev * 100.0, stats.iterations);
"%#8.3f %#8.3f %#5.2f%% %3d\n",
stats.min_ticks / (double) cairo_perf_ticks_per_second (),
stats.median_ticks / (double) cairo_perf_ticks_per_second (),
stats.std_dev * 100.0,
stats.iterations);
fflush (perf->summary);
}
if (perf->raw) {
printf ("\n");
fflush (stdout);
}
perf->test_number++;
free (trace_cpy);
}