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@weirddan455
Created December 31, 2021 16:43
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clock_gettime benchmark
#include <time.h>
#include <stdio.h>
#include <stdint.h>
#define MILLION 1000000
#define BILLION 1000000000
int main(void)
{
struct timespec start, end;
clock_gettime(CLOCK_MONOTONIC_RAW, &start);
for (int i = 0; i < MILLION; i++)
{
clock_gettime(CLOCK_MONOTONIC_RAW, &end);
}
int64_t nanoseconds = (end.tv_sec - start.tv_sec) * BILLION;
nanoseconds += (end.tv_nsec - start.tv_nsec);
double seconds = (double)nanoseconds / (double)BILLION;
printf("1 million clock_gettime calls took: %f seconds\n", seconds);
return 0;
}
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