From: Noah Goldstein <goldstein.w.n@gmail.com>
To: libc-alpha@sourceware.org
Cc: goldstein.w.n@gmail.com, hjl.tools@gmail.com, carlos@systemhalted.org
Subject: [PATCH v1] Benchtest: Add additional benchmarks for strlen and strnlen
Date: Wed, 28 Sep 2022 12:20:12 -0700 [thread overview]
Message-ID: <20220928192012.2143620-1-goldstein.w.n@gmail.com> (raw)
Current benchmarks are missing many cases in the mid-length range
which is often the hottest size range.
---
benchtests/bench-strlen.c | 33 ++++++++++++++++++++---
benchtests/bench-strnlen.c | 55 +++++++++++++++++++++++++++++++++++---
2 files changed, 81 insertions(+), 7 deletions(-)
diff --git a/benchtests/bench-strlen.c b/benchtests/bench-strlen.c
index 602e52ee83..696e4541d7 100644
--- a/benchtests/bench-strlen.c
+++ b/benchtests/bench-strlen.c
@@ -128,10 +128,10 @@ test_main (void)
/* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/
for (i = 1; i < 8; ++i)
- {
- do_test (&json_ctx, sizeof (CHAR) * i, i);
- do_test (&json_ctx, 0, i);
- }
+ {
+ do_test (&json_ctx, sizeof (CHAR) * i, i);
+ do_test (&json_ctx, 0, i);
+ }
for (i = 2; i <= 12; ++i)
{
@@ -141,6 +141,31 @@ test_main (void)
do_test (&json_ctx, sizeof (CHAR) * i, (size_t)((1 << i) / 1.5));
}
+ for (i = 0; i < 512; i += 32)
+ {
+ do_test (&json_ctx, 0, i / sizeof (CHAR));
+ }
+
+ for (i = 512; i < 1024; i += 64)
+ {
+ do_test (&json_ctx, 0, i / sizeof (CHAR));
+ }
+
+ for (i = 1024; i < 2048; i += 128)
+ {
+ do_test (&json_ctx, 0, i / sizeof (CHAR));
+ }
+
+ for (i = 2048; i < 4096; i += 256)
+ {
+ do_test (&json_ctx, 0, i / sizeof (CHAR));
+ }
+
+ for (i = 4096; i < 8192; i += 512)
+ {
+ do_test (&json_ctx, 0, i / sizeof (CHAR));
+ }
+
json_array_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_attr_object_end (&json_ctx);
diff --git a/benchtests/bench-strnlen.c b/benchtests/bench-strnlen.c
index 2cd561dfd5..13b46b3f57 100644
--- a/benchtests/bench-strnlen.c
+++ b/benchtests/bench-strnlen.c
@@ -63,6 +63,11 @@ do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s, size_t maxlen,
ret = 1;
return;
}
+ /* Warmup. */
+ for (i = 0; i < iters / 16; ++i)
+ {
+ CALL (impl, s, maxlen);
+ }
TIMING_NOW (start);
for (i = 0; i < iters; ++i)
@@ -110,7 +115,7 @@ do_test (json_ctx_t *json_ctx, size_t align, size_t len, size_t maxlen,
int
test_main (void)
{
- size_t i;
+ size_t i, j;
json_ctx_t json_ctx;
test_init ();
@@ -131,6 +136,19 @@ test_main (void)
json_array_begin (&json_ctx, "results");
+ for (i = 0; i <= 1; ++i)
+ {
+ do_test (&json_ctx, i, 1, 128, MIDDLE_CHAR);
+ do_test (&json_ctx, i, 128, 1, MIDDLE_CHAR);
+ do_test (&json_ctx, i, 1, 2, MIDDLE_CHAR);
+ do_test (&json_ctx, i, 2, 1, MIDDLE_CHAR);
+
+ do_test (&json_ctx, 32 + i, 1, 128, MIDDLE_CHAR);
+ do_test (&json_ctx, 32 + i, 128, 1, MIDDLE_CHAR);
+ do_test (&json_ctx, 32 + i, 1, 2, MIDDLE_CHAR);
+ do_test (&json_ctx, 32 + i, 2, 1, MIDDLE_CHAR);
+ }
+
for (i = 1; i < 8; ++i)
{
do_test (&json_ctx, 0, i, i - 1, MIDDLE_CHAR);
@@ -149,18 +167,49 @@ test_main (void)
{
do_test (&json_ctx, 0, 1 << i, 5000, MIDDLE_CHAR);
do_test (&json_ctx, 1, 1 << i, 5000, MIDDLE_CHAR);
+ do_test (&json_ctx, 0, 5000, 1 << i, MIDDLE_CHAR);
+ do_test (&json_ctx, 1, 5000, 1 << i, MIDDLE_CHAR);
}
for (i = 1; i < 8; ++i)
- do_test (&json_ctx, 0, i, 5000, BIG_CHAR);
+ {
+ do_test (&json_ctx, 0, i, 5000, BIG_CHAR);
+ do_test (&json_ctx, 0, 5000, i, BIG_CHAR);
+ }
for (i = 1; i < 8; ++i)
- do_test (&json_ctx, i, i, 5000, BIG_CHAR);
+ {
+ do_test (&json_ctx, i, i, 5000, BIG_CHAR);
+ do_test (&json_ctx, i, 5000, i, BIG_CHAR);
+ }
for (i = 2; i <= 10; ++i)
{
do_test (&json_ctx, 0, 1 << i, 5000, BIG_CHAR);
do_test (&json_ctx, 1, 1 << i, 5000, BIG_CHAR);
+ do_test (&json_ctx, 0, 5000, 1 << i, BIG_CHAR);
+ do_test (&json_ctx, 1, 5000, 1 << i, BIG_CHAR);
+ }
+
+ for (i = (16 / sizeof (CHAR)); i <= (8192 / sizeof (CHAR)); i += i)
+ {
+ for (j = 0; j <= (704 / sizeof (CHAR)); j += (32 / sizeof (CHAR)))
+ {
+ do_test (&json_ctx, 0, 1 << i, (i + j), BIG_CHAR);
+ do_test (&json_ctx, 0, i + j, i, BIG_CHAR);
+
+ do_test (&json_ctx, 64, 1 << i, (i + j), BIG_CHAR);
+ do_test (&json_ctx, 64, i + j, i, BIG_CHAR);
+
+ if (j < i)
+ {
+ do_test (&json_ctx, 0, 1 << i, i - j, BIG_CHAR);
+ do_test (&json_ctx, 0, i - j, i, BIG_CHAR);
+
+ do_test (&json_ctx, 64, 1 << i, i - j, BIG_CHAR);
+ do_test (&json_ctx, 64, i - j, i, BIG_CHAR);
+ }
+ }
}
json_array_end (&json_ctx);
--
2.34.1
next reply other threads:[~2022-09-28 19:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-28 19:20 Noah Goldstein [this message]
2022-09-28 19:25 ` H.J. Lu
2022-09-28 19:26 ` Sunil Pandey
2022-09-28 20:41 ` Noah Goldstein
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