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Do a simpler boring bench

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Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>
This commit is contained in:
Adrien Gallouët
2019-10-04 17:10:10 +00:00
parent c93cef5491
commit 65f636555b
1 changed files with 26 additions and 28 deletions
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54
src/bench.c
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@@ -51,25 +51,24 @@ gt_bench(int argc, char **argv)
if (term) { if (term) {
printf("cipher: %s\n\n", chacha ? "chacha20poly1305" : "aegis256"); printf("cipher: %s\n\n", chacha ? "chacha20poly1305" : "aegis256");
printf(" %5s %9s %9s\n", "size", "mean", "sigma"); printf(" size min mean max \n");
printf("---------------------------------\n"); printf("----------------------------------------------------\n");
} }
int64_t size = 20; int64_t size = 20;
for (int i = 0; !gt_quit && size <= 1450; i++) { for (int i = 0; !gt_quit && size <= 1450; i++) {
struct { struct {
int64_t d, n, m, v, s; int64_t min, mean, max, n;
} s = { .n = 0 }; } mbps = { .n = 0 };
while (!gt_quit && s.n < 5) { int64_t bytes_max = (int64_t)1 << 20;
alarm(1);
gt_alarm = 0;
while (!gt_quit && mbps.n < 10) {
int64_t bytes = 0; int64_t bytes = 0;
clock_t base = clock(); int64_t base = (int64_t)clock();
while (!gt_alarm && !(bytes >> 32)) { while (!gt_quit && bytes <= bytes_max) {
if (chacha) { if (chacha) {
crypto_aead_chacha20poly1305_encrypt( crypto_aead_chacha20poly1305_encrypt(
buf, NULL, buf, size, NULL, 0, NULL, npub, key); buf, NULL, buf, size, NULL, 0, NULL, npub, key);
@@ -79,31 +78,28 @@ gt_bench(int argc, char **argv)
bytes += size; bytes += size;
} }
int64_t mbps = (8 * bytes * CLOCKS_PER_SEC) int64_t dt = (int64_t)clock() - base;
/ ((clock() - base) * 1000 * 1000); bytes_max = (bytes * (CLOCKS_PER_SEC / 4)) / dt;
int64_t _mbps = (8 * bytes * CLOCKS_PER_SEC) / (dt * 1000 * 1000);
alarm(0); if (!mbps.n++) {
mbps.min = _mbps;
if (mbps <= 0) mbps.max = _mbps;
continue; mbps.mean = _mbps;
if (!s.n++) {
s.m = mbps;
s.d = 0;
continue; continue;
} }
int64_t d1 = mbps - s.m; s.m += d1 / s.n; if (mbps.min > _mbps)
int64_t d2 = mbps - s.m; s.d += d1 * d2; mbps.min = _mbps;
s.v = s.d / (s.n - 1); if (mbps.max < _mbps)
s.s = 1 + (s.v - 1) / 2; mbps.max = _mbps;
while (s.s && s.s * s.s > s.v) mbps.mean += (_mbps - mbps.mean) / mbps.n;
s.s = (s.s + s.v / s.s) / 2;
if (term) { if (term) {
printf("\r %5"PRIi64" %9"PRIi64" Mbps %9"PRIi64, size, s.m, s.s); printf("\r %5"PRIi64" %9"PRIi64" Mbps %9"PRIi64" Mbps %9"PRIi64" Mbps",
size, mbps.min, mbps.mean, mbps.max);
fflush(stdout); fflush(stdout);
} }
} }
@@ -111,10 +107,12 @@ gt_bench(int argc, char **argv)
if (term) { if (term) {
printf("\n"); printf("\n");
} else { } else {
printf("bench %"PRIi64" %"PRIi64" %"PRIi64"\n", size, s.m, s.s); printf("bench %s %"PRIi64" %"PRIi64" %"PRIi64" %"PRIi64"\n",
chacha ? "chacha20poly1305" : "aegis256",
size, mbps.min, mbps.mean, mbps.max);
} }
size += 2 * 11 * 13; size += 2 * 5 * 13;
} }
return 0; return 0;