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freetype2
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Code Issues 4 Releases Wiki Activity

outliers

This commit is contained in:
goksu 2023-08-18 17:42:53 +03:00
parent 3553148174
commit f3dfede62f
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1 changed files with 40 additions and 59 deletions
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99
src/tools/ftbench/ftbench.c
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@ -267,29 +267,19 @@ int compare(const void* a, const void* b) {
if (*(double*)a < *(double*)b) return -1; if (*(double*)a < *(double*)b) return -1;
return 0; return 0;
} }
/*
* Bench code
*/
static void benchmark(FT_Face face, btest_t* test, int max_iter, double max_time, double warmup) {
int n, done;
int total_done = 0; // track total iterations done across all chunks
btimer_t timer, elapsed;
static void
benchmark( FT_Face face,
btest_t* test,
int max_iter,
double max_time,
double warmup )
{
int n, done;
btimer_t timer, elapsed;
int NUM_CHUNKS = max_iter / CHUNK_SIZE; int NUM_CHUNKS = max_iter / CHUNK_SIZE;
double results[NUM_CHUNKS]; double medians[NUM_CHUNKS];
double errors[NUM_CHUNKS];
if ( test->cache_first ) if (test->cache_first) {
{ TIMER_RESET(&timer);
TIMER_RESET( &timer ); test->bench(&timer, face, test->user_data);
test->bench( &timer, face, test->user_data );
} }
// Initial warm-up // Initial warm-up
@ -297,56 +287,47 @@ int compare(const void* a, const void* b) {
test->bench(&timer, face, test->user_data); test->bench(&timer, face, test->user_data);
} }
printf( " %-25s ", test->title ); printf(" %-25s ", test->title);
fflush( stdout ); fflush(stdout);
for (int chunk = 0; chunk < NUM_CHUNKS; chunk++) { for (int chunk = 0; chunk < NUM_CHUNKS; chunk++) {
TIMER_RESET( &timer ); double chunk_results[CHUNK_SIZE];
TIMER_RESET( &elapsed ); TIMER_RESET(&timer);
TIMER_RESET(&elapsed);
// Execute a chunk of iterations // Execute a chunk of iterations
for (n = 0, done = 0; n < CHUNK_SIZE; n++) { for (n = 0, done = 0; n < CHUNK_SIZE; n++) {
TIMER_START( &elapsed ); TIMER_START(&elapsed);
done += test->bench( &timer, face, test->user_data ); done += test->bench(&timer, face, test->user_data);
TIMER_STOP( &elapsed ); TIMER_STOP(&elapsed);
chunk_results[n] = TIMER_GET(&elapsed);
// Check max_time for each iteration, break if exceeded
if (TIMER_GET(&elapsed) > 1E6 * max_time) {
break;
}
} }
if (TIMER_GET( &elapsed ) > 1E6 * max_time) { total_done += done;
//break;
} qsort(chunk_results, CHUNK_SIZE, sizeof(double), compare);
results[chunk] = TIMER_GET( &timer ); if (CHUNK_SIZE % 2 == 0) {
medians[chunk] = (chunk_results[CHUNK_SIZE / 2 - 1] + chunk_results[CHUNK_SIZE / 2]) / 2.0;
} else {
medians[chunk] = chunk_results[CHUNK_SIZE / 2];
}
errors[chunk] = chunk_results[91 * CHUNK_SIZE / 100] - chunk_results[10 * CHUNK_SIZE / 100];
} }
// Sort results for IQR calculation qsort(medians, NUM_CHUNKS, sizeof(double), compare);
qsort(results, NUM_CHUNKS, sizeof(double), compare); double final_median;
if (NUM_CHUNKS % 2 == 0) {
double q1 = results[NUM_CHUNKS / 4]; final_median = (medians[NUM_CHUNKS / 2 - 1] + medians[NUM_CHUNKS / 2]) / 2.0;
double q3 = results[3 * NUM_CHUNKS / 4]; } else {
double iqr = q3 - q1; final_median = medians[NUM_CHUNKS / 2];
double lower_bound = q1 - 1.5 * iqr;
double upper_bound = q3 + 1.5 * iqr;
double total_time = 0.0;
int valid_chunks = 0;
for (int chunk = 0; chunk < NUM_CHUNKS; chunk++) {
if (results[chunk] >= lower_bound && results[chunk] <= upper_bound) {
total_time += results[chunk];
valid_chunks++;
}
} }
double average_time = total_time / valid_chunks;
printf( "%10.1f microseconds %10d done\n", printf("%10.1f microseconds %10d done\n", final_median, total_done);
average_time, done ); }
}
/* /*
* Various tests * Various tests