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tests/swscale: print performance stats on exit

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This commit is contained in:
Niklas Haas
2025-02-25 18:17:25 +01:00
parent 6c12b1535a
commit e1736d0d0b
1 changed files with 38 additions and 9 deletions
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47
libswscale/tests/swscale.c
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@ -24,6 +24,7 @@
#include <string.h>
#include <inttypes.h>
#include <stdarg.h>
#include <signal.h>
#undef HAVE_AV_CONFIG_H
#include "libavutil/cpu.h"
@ -71,6 +72,33 @@ const SwsFlags flags[] = {
static FFSFC64 prng_state;
static SwsContext *sws[3]; /* reused between tests for efficiency */
static double speedup_logavg;
static double speedup_min = 1e10;
static double speedup_max = 0;
static int speedup_count;
static const char *speedup_color(double ratio)
{
return ratio > 1.10 ? "\033[1;32m" : /* bold green */
ratio > 1.02 ? "\033[32m" : /* green */
ratio > 0.98 ? "" : /* default */
ratio > 0.95 ? "\033[33m" : /* yellow */
ratio > 0.90 ? "\033[31m" : /* red */
"\033[1;31m"; /* bold red */
}
static void exit_handler(int sig)
{
if (speedup_count) {
double ratio = exp(speedup_logavg / speedup_count);
printf("Overall speedup=%.3fx %s%s\033[0m, min=%.3fx max=%.3fx\n", ratio,
speedup_color(ratio), ratio >= 1.0 ? "faster" : "slower",
speedup_min, speedup_max);
}
exit(sig);
}
static int fmt_comps(enum AVPixelFormat fmt)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
@ -261,16 +289,16 @@ static int run_test(enum AVPixelFormat src_fmt, enum AVPixelFormat dst_fmt,
if (opts.bench && time_ref) {
double ratio = (double) time_ref / time;
const char *color = ratio > 1.10 ? "\033[1;32m" : /* bold green */
ratio > 1.02 ? "\033[32m" : /* green */
ratio > 0.98 ? "" : /* default */
ratio > 0.95 ? "\033[33m" : /* yellow */
ratio > 0.90 ? "\033[31m" : /* red */
"\033[1;31m"; /* bold red */
if (FFMIN(time, time_ref) > 100 /* don't pollute stats with low precision */) {
speedup_min = FFMIN(speedup_min, ratio);
speedup_max = FFMAX(speedup_max, ratio);
speedup_logavg += log(ratio);
speedup_count++;
}
printf(" time=%"PRId64" us, ref=%"PRId64" us, speedup=%.3fx %s%s\033[0m\n",
time / opts.iters, time_ref / opts.iters, ratio, color,
ratio >= 1.0 ? "faster" : "slower");
time / opts.iters, time_ref / opts.iters, ratio,
speedup_color(ratio), ratio >= 1.0 ? "faster" : "slower");
} else if (opts.bench) {
printf(" time=%"PRId64" us\n", time / opts.iters);
}
@ -492,6 +520,7 @@ bad_option:
ff_sfc64_init(&prng_state, 0, 0, 0, 12);
av_lfg_init(&rand, 1);
signal(SIGINT, exit_handler);
for (int i = 0; i < 3; i++) {
sws[i] = sws_alloc_context();
@ -537,5 +566,5 @@ error:
av_frame_free(&ref);
if (fp)
fclose(fp);
return ret;
exit_handler(ret);
}