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[cairo-perf] Run performance tests over similar surfaces as well.

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Immediately repeat the performance test against a similar surface to
ensure that they introduce no regressions. Primarily introduced to
sanity check the change to use XShmPixmaps instead of XPixmaps in the
xlib backend, but it should be generally useful.
This commit is contained in:
Chris Wilson 2007-10-19 23:25:57 +01:00
parent 081507a09e
commit ae2535e4cb
1 changed files with 75 additions and 46 deletions
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121
perf/cairo-perf.c
View file

@ -105,27 +105,45 @@ target_is_measurable (cairo_boilerplate_target_t *target)
}
static const char *
_content_to_string (cairo_content_t content)
_content_to_string (cairo_content_t content, cairo_bool_t similar)
{
switch (content) {
switch (content|similar) {
case CAIRO_CONTENT_COLOR:
return "rgb";
case CAIRO_CONTENT_COLOR|1:
return "rgb&";
case CAIRO_CONTENT_ALPHA:
return "a";
case CAIRO_CONTENT_ALPHA|1:
return "a&";
case CAIRO_CONTENT_COLOR_ALPHA:
return "rgba";
case CAIRO_CONTENT_COLOR_ALPHA|1:
return "rgba&";
default:
return "<unknown_content>";
}
}
static cairo_bool_t
cairo_perf_has_similar (cairo_perf_t *perf)
{
cairo_surface_t *target = cairo_get_target (perf->cr);
/* exclude the image backend */
if (cairo_surface_get_type (target) == CAIRO_SURFACE_TYPE_IMAGE)
return FALSE;
return TRUE;
}
void
cairo_perf_run (cairo_perf_t *perf,
const char *name,
cairo_perf_func_t perf_func)
{
static cairo_bool_t first_run = TRUE;
unsigned int i;
unsigned int i, similar, has_similar;
cairo_perf_ticks_t *times;
cairo_stats_t stats = {0.0, 0.0};
int low_std_dev_count;
@ -156,56 +174,67 @@ cairo_perf_run (cairo_perf_t *perf,
times = xmalloc (perf->iterations * sizeof (cairo_perf_ticks_t));
/* We run one iteration in advance to warm caches, etc. */
cairo_perf_yield ();
(perf_func) (perf->cr, perf->size, perf->size);
low_std_dev_count = 0;
for (i =0; i < perf->iterations; i++) {
has_similar = cairo_perf_has_similar (perf);
for (similar = 0; similar <= has_similar; similar++) {
/* We run one iteration in advance to warm caches, etc. */
cairo_perf_yield ();
times[i] = (perf_func) (perf->cr, perf->size, perf->size);
if (similar)
cairo_push_group_with_content (perf->cr, perf->target->content);
(perf_func) (perf->cr, perf->size, perf->size);
if (similar)
cairo_pattern_destroy (cairo_pop_group (perf->cr));
if (perf->raw) {
if (i == 0)
printf ("[*] %s-%s %s-%d %g",
perf->target->name,
_content_to_string (perf->target->content),
name, perf->size,
cairo_perf_ticks_per_second () / 1000.0);
printf (" %lld", times[i]);
} else {
if (i > 0) {
_cairo_stats_compute (&stats, times, i+1);
low_std_dev_count = 0;
for (i =0; i < perf->iterations; i++) {
cairo_perf_yield ();
if (similar)
cairo_push_group_with_content (perf->cr, perf->target->content);
times[i] = (perf_func) (perf->cr, perf->size, perf->size);
if (similar)
cairo_pattern_destroy (cairo_pop_group (perf->cr));
if (stats.std_dev <= CAIRO_PERF_LOW_STD_DEV &&
! perf->exact_iterations)
{
low_std_dev_count++;
if (low_std_dev_count >= CAIRO_PERF_STABLE_STD_DEV_COUNT)
break;
} else {
low_std_dev_count = 0;
if (perf->raw) {
if (i == 0)
printf ("[*] %s-%s %s-%d %g",
perf->target->name,
_content_to_string (perf->target->content, similar),
name, perf->size,
cairo_perf_ticks_per_second () / 1000.0);
printf (" %lld", times[i]);
} else if (! perf->exact_iterations) {
if (i > 0) {
_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)
break;
} else {
low_std_dev_count = 0;
}
}
}
}
if (perf->raw) {
printf ("\n");
} else {
_cairo_stats_compute (&stats, times, i);
printf ("[%3d] %8s-%-5s %26s-%-3d ",
perf->test_number, perf->target->name,
_content_to_string (perf->target->content, similar),
name, perf->size);
printf ("%10lld %#8.3f %#8.3f %#5.2f%% %3d\n",
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);
}
perf->test_number++;
}
if (perf->raw) {
printf ("\n");
} else {
printf ("[%3d] %8s-%-4s %26s-%-3d ",
perf->test_number, perf->target->name,
_content_to_string (perf->target->content),
name, perf->size);
printf ("%10lld %#8.3f %#8.3f %#5.2f%% %3d\n",
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);
}
perf->test_number++;
free (times);
}