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microbench: use us precision timer

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This commit is contained in:
Zihao Yu 2021-01-27 21:22:32 +08:00
parent 242c1f1f53
commit f4f447c422
2 changed files with 18 additions and 14 deletions
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2
benchmarks/microbench/include/benchmark.h
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@ -89,7 +89,7 @@ extern Setting *setting;
typedef struct Result {
int pass;
unsigned long tsc, msec;
uint64_t usec;
} Result;
void prepare(Result *res);

30
benchmarks/microbench/src/bench.c
View file

@ -8,7 +8,7 @@ Setting *setting;
static char *hbrk;
static uint32_t uptime_ms() { return io_read(AM_TIMER_UPTIME).us / 1000; }
static uint64_t uptime() { return io_read(AM_TIMER_UPTIME).us; }
// The benchmark list
@ -26,7 +26,7 @@ Benchmark benchmarks[] = {
// Running a benchmark
static void bench_prepare(Result *res) {
res->msec = uptime_ms();
res->usec = uptime();
}
static void bench_reset() {
@ -34,7 +34,7 @@ static void bench_reset() {
}
static void bench_done(Result *res) {
res->msec = uptime_ms() - res->msec;
res->usec = uptime() - res->usec;
}
static const char *bench_check(Benchmark *bench) {
@ -54,9 +54,9 @@ static void run_once(Benchmark *b, Result *res) {
res->pass = current->validate();
}
static unsigned long score(Benchmark *b, unsigned long tsc, unsigned long msec) {
if (msec == 0) return 0;
return (REF_SCORE / 1000) * setting->ref / msec;
static unsigned long score(Benchmark *b, unsigned long usec) {
if (usec == 0) return 0;
return (uint64_t)(REF_SCORE) * setting->ref / usec;
}
int main(const char *args) {
@ -82,7 +82,8 @@ int main(const char *args) {
unsigned long bench_score = 0;
int pass = 1;
uint32_t t0 = uptime_ms();
uint64_t t0 = uptime();
uint64_t score_time = 0;
for (int i = 0; i < LENGTH(benchmarks); i ++) {
Benchmark *bench = &benchmarks[i];
@ -93,14 +94,15 @@ int main(const char *args) {
if (msg != NULL) {
printf("Ignored %s\n", msg);
} else {
unsigned long msec = ULONG_MAX;
unsigned long usec = ULONG_MAX;
int succ = 1;
for (int i = 0; i < REPEAT; i ++) {
Result res;
run_once(bench, &res);
printf(res.pass ? "*" : "X");
succ &= res.pass;
if (res.msec < msec) msec = res.msec;
if (res.usec < usec) usec = res.usec;
score_time += res.usec;
}
if (succ) printf(" Passed.");
@ -108,17 +110,18 @@ int main(const char *args) {
pass &= succ;
unsigned long cur = score(bench, 0, msec);
unsigned long cur = succ ? score(bench, usec) : 0;
printf("\n");
if (setting_id != 0) {
printf(" min time: %d ms [%d]\n", (unsigned int)msec, (unsigned int)cur);
printf(" min time: %d.%03d ms [%d]\n",
(int)(usec / 1000), (int)usec % 1000, (unsigned int)cur);
}
bench_score += cur;
}
}
uint32_t t1 = uptime_ms();
uint64_t total_time = uptime() - t0;
bench_score /= LENGTH(benchmarks);
@ -130,7 +133,8 @@ int main(const char *args) {
} else {
printf("\n");
}
printf("Total time: %d ms\n", t1 - t0);
printf("Scored time: %d.%03d ms\n", (int)((score_time) / 1000), (int)score_time % 1000);
printf("Total time: %d.%03d ms\n", (int)((total_time) / 1000), (int)total_time % 1000);
return 0;
}