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perf: Move sorting and discarding outside of compute_stats. Adjust discard to slowest 15% only.

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This commit is contained in:
Carl Worth 2006-09-06 00:52:06 -07:00
parent d31037e421
commit 3519887f18
1 changed files with 9 additions and 8 deletions
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17
perf/cairo-perf.c
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@ -112,20 +112,15 @@ _compute_stats (cairo_perf_ticks_t *values, int num_values, stats_t *stats)
{
int i;
double sum, delta;
int chop = num_values / 5;
qsort (values, num_values, sizeof (double), compare_cairo_perf_ticks);
num_values -= 2 * chop;
sum = 0.0;
for (i = chop; i < chop + num_values; i++)
for (i = 0; i < num_values; i++)
sum += values[i];
stats->mean = sum / num_values;
sum = 0.0;
for (i = chop; i < chop + num_values; i++) {
for (i = 0; i < num_values; i++) {
delta = values[i] - stats->mean;
sum += delta * delta;
}
@ -168,7 +163,13 @@ main (int argc, char *argv[])
cairo_perf_yield ();
times[k] = perf->run (cr, size, size);
}
_compute_stats (times, cairo_perf_iterations, &stats);
qsort (times, cairo_perf_iterations,
sizeof (cairo_perf_ticks_t), compare_cairo_perf_ticks);
/* Assume the slowest 15% are outliers, and ignore */
_compute_stats (times, .85 * cairo_perf_iterations, &stats);
if (i==0 && j==0 && size == perf->min_size)
printf ("backend-content\ttest-size\tmean time\tstd dev.\titerations\n");
printf ("%s-%s\t%s-%d\t%g\t%g%%\t%d\n",