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wip: test/bench: add bench count

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This commit is contained in:
Simon Ser 2024-05-21 10:24:06 +02:00
parent ec86735763
commit 218920e2f4
1 changed files with 32 additions and 9 deletions
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33
test/bench.c
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@ -37,7 +37,7 @@ int
main(int argc, char *argv[])
{
int opt;
size_t planes_len, layers_len;
size_t planes_len, layers_len, bench_count, commit_count;
struct timespec start, end;
struct liftoff_mock_plane *mock_planes[MAX_PLANES];
size_t i, j;
@ -52,7 +52,8 @@ main(int argc, char *argv[])
planes_len = 5;
layers_len = 10;
while ((opt = getopt(argc, argv, "p:l:")) != -1) {
bench_count = 1;
while ((opt = getopt(argc, argv, "p:l:n:")) != -1) {
switch (opt) {
case 'p':
planes_len = (size_t)atoi(optarg);
@ -60,8 +61,11 @@ main(int argc, char *argv[])
case 'l':
layers_len = (size_t)atoi(optarg);
break;
case 'n':
bench_count = (size_t)atoi(optarg);
break;
default:
fprintf(stderr, "usage: %s [-p planes] [-l layers]\n",
fprintf(stderr, "usage: %s [-p planes] [-l layers] [-n count]\n",
argv[0]);
exit(EXIT_FAILURE);
}
@ -105,23 +109,42 @@ main(int argc, char *argv[])
clock_gettime(CLOCK_MONOTONIC, &start);
req = drmModeAtomicAlloc();
for (i = 0; i < bench_count; i++) {
drmModeAtomicSetCursor(req, 0);
ret = liftoff_output_apply(output, req, 0, &(struct liftoff_output_apply_options){
.timeout_ns = INT64_MAX,
});
assert(ret == 0);
for (j = 0; j < layers_len; j++) {
#if 0 /* change position without changing intersection */
liftoff_layer_set_property(layers[j], "CRTC_X",
j * 100 + i);
liftoff_layer_set_property(layers[j], "CRTC_Y",
j * 100 + i);
#else /* change size and intersection */
liftoff_layer_set_property(layers[j], "CRTC_W",
100 + 50 * (i % 2));
liftoff_layer_set_property(layers[j], "CRTC_H",
100 + 50 * (i % 2));
#endif
}
}
drmModeAtomicFree(req);
clock_gettime(CLOCK_MONOTONIC, &end);
dur_ms = ((double)end.tv_sec - (double)start.tv_sec) * 1000 +
((double)end.tv_nsec - (double)start.tv_nsec) / 1000000;
dur_ms = dur_ms / (double)bench_count;
commit_count = liftoff_mock_commit_count / bench_count;
printf("Plane allocation took %fms\n", dur_ms);
printf("Plane allocation performed %zu atomic test commits\n",
liftoff_mock_commit_count);
commit_count);
/* TODO: the mock libdrm library takes time to check atomic requests.
* This benchmark doesn't account for time spent in the mock library. */
printf("With 20µs per atomic test commit, plane allocation would take "
"%fms\n", dur_ms + liftoff_mock_commit_count * 0.02);
"%fms\n", dur_ms + commit_count * 0.02);
liftoff_device_destroy(device);
close(drm_fd);