static int do_memcpy(int iters, int sz) {
struct timeval tv1;
struct timeval tv2;
int i, j;
uint8_t *a = malloc(sz);
if (!a) return -1;
uint8_t *b = malloc(sz);
if (!b) return -1;
int c = 1000000000/sz;
for (i = 0; iters == -1 || i < iters; i++) {
gettimeofday(&tv1, NULL);
for (j = 0; j < c; j++)
memcpy(b, a, sz);
gettimeofday(&tv2, NULL);
tv_sub(&tv2, &tv1);
printf("memcpy %dx%d bytes took %ld.%06ld seconds (%f MB/s)\n",
c, sz, tv2.tv_sec, tv2.tv_usec, mb_sec(c*sz, &tv2));
}
return 0;
}
static int do_memread(int iters, int sz) {
struct timeval tv1;
struct timeval tv2;
int i, j, k;
int *b = malloc(sz);
if (!b) return -1;
int c = 1000000000/sz;
for (i = 0; iters == -1 || i < iters; i++) {
gettimeofday(&tv1, NULL);
for (j = 0; j < c; j++)
for (k = 0; k < sz/4; k++)
foo = b[k];
gettimeofday(&tv2, NULL);
tv_sub(&tv2, &tv1);
printf("read %dx%d bytes took %ld.%06ld seconds (%f MB/s)\n",
c, sz, tv2.tv_sec, tv2.tv_usec, mb_sec(c*sz, &tv2));
}
return 0;
}
static int do_memset(int sz) {
struct timeval tv1;
struct timeval tv2;
int i;
uint8_t *b = malloc(sz);
if (!b) return -1;
int c = 1000000000/sz;
while (1) {
gettimeofday(&tv1, NULL);
for (i = 0; i < c; i++)
memset(b, 0, sz);
gettimeofday(&tv2, NULL);
tv_sub(&tv2, &tv1);
printf("memset %dx%d bytes took %ld.%06ld seconds (%f MB/s)\n", c, sz, tv2.tv_sec, tv2.tv_usec, mb_sec(c*sz, &tv2));
}
return 0;
}
