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* [glibc/siddhesh/gai-cleanup2] benchtests: Add benches for memset with 0 value
@ 2022-03-01 2:39 Siddhesh Poyarekar
0 siblings, 0 replies; only message in thread
From: Siddhesh Poyarekar @ 2022-03-01 2:39 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cf975913131169a753acf0621e08e72bc40a91e2
commit cf975913131169a753acf0621e08e72bc40a91e2
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Feb 9 07:31:41 2022 -0800
benchtests: Add benches for memset with 0 value
memset with zero as the value to set is by far the majority value (99%+
for Python3 and GCC). Add bench-memset-zero-large.c,
bench-memset-zero-walk.c and bench-memset-zero.c to measure memset
implementations for zeroing.
Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com>
Diff:
---
benchtests/Makefile | 3 +++
benchtests/bench-bzero-large.c | 29 ++++++++++++++++++++++++++++-
benchtests/bench-bzero-walk.c | 30 +++++++++++++++++++++++++++++-
benchtests/bench-bzero.c | 30 +++++++++++++++++++++++++++++-
benchtests/bench-memset-zero-large.c | 20 ++++++++++++++++++++
benchtests/bench-memset-zero-walk.c | 20 ++++++++++++++++++++
benchtests/bench-memset-zero.c | 20 ++++++++++++++++++++
7 files changed, 149 insertions(+), 3 deletions(-)
diff --git a/benchtests/Makefile b/benchtests/Makefile
index 6f718fac35..9b8df3b3f5 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -139,6 +139,9 @@ string-benchset := \
memset \
memset-large \
memset-walk \
+ memset-zero \
+ memset-zero-large \
+ memset-zero-walk \
rawmemchr \
stpcpy \
stpcpy_chk \
diff --git a/benchtests/bench-bzero-large.c b/benchtests/bench-bzero-large.c
index f2e2e981b7..cfc7b81cdf 100644
--- a/benchtests/bench-bzero-large.c
+++ b/benchtests/bench-bzero-large.c
@@ -17,7 +17,11 @@
<https://www.gnu.org/licenses/>. */
#define TEST_MAIN
-#define TEST_NAME "bzero"
+#ifdef DO_MEMSET
+# define TEST_NAME "memset"
+#else
+# define TEST_NAME "bzero"
+#endif
#define START_SIZE (128 * 1024)
#define MIN_PAGE_SIZE (getpagesize () + 64 * 1024 * 1024)
#define TIMEOUT (20 * 60)
@@ -25,6 +29,14 @@
#include "json-lib.h"
+#ifdef DO_MEMSET
+void *generic_memset (void *, int, size_t);
+
+typedef void *(*proto_t) (void *, int, size_t);
+
+IMPL (memset, 1)
+IMPL (generic_memset, 0)
+#else
static void
memset_zero (void * s, size_t len)
{
@@ -35,6 +47,7 @@ typedef void (*proto_t) (void *, size_t);
IMPL (bzero, 1)
IMPL (memset_zero, 0)
+#endif
static void
do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, size_t n)
@@ -45,7 +58,11 @@ do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, size_t n)
TIMING_NOW (start);
for (i = 0; i < iters; ++i)
{
+#ifdef DO_MEMSET
+ CALL (impl, s, 0, n);
+#else
CALL (impl, s, n);
+#endif
}
TIMING_NOW (stop);
@@ -115,3 +132,13 @@ test_main (void)
}
#include <support/test-driver.c>
+
+#ifdef DO_MEMSET
+# define libc_hidden_builtin_def(X)
+# define libc_hidden_def(X)
+# define libc_hidden_weak(X)
+# define weak_alias(X,Y)
+# undef MEMSET
+# define MEMSET generic_memset
+# include <string/memset.c>
+#endif
diff --git a/benchtests/bench-bzero-walk.c b/benchtests/bench-bzero-walk.c
index b65d12a6a2..00226f80b8 100644
--- a/benchtests/bench-bzero-walk.c
+++ b/benchtests/bench-bzero-walk.c
@@ -17,7 +17,11 @@
<https://www.gnu.org/licenses/>. */
#define TEST_MAIN
-#define TEST_NAME "bzero"
+#ifdef DO_MEMSET
+# define TEST_NAME "memset"
+#else
+# define TEST_NAME "bzero"
+#endif
#define START_SIZE 128
#define MIN_PAGE_SIZE (getpagesize () + 32 * 1024 * 1024)
#define TIMEOUT (20 * 60)
@@ -25,6 +29,15 @@
#include "json-lib.h"
+#ifdef DO_MEMSET
+void *generic_memset (void *, int, size_t);
+
+typedef void *(*proto_t) (void *, int, size_t);
+
+IMPL (memset, 1)
+IMPL (generic_memset, 0)
+
+#else
static void
memset_zero (void * s, size_t len)
{
@@ -35,6 +48,7 @@ typedef void (*proto_t) (void *, size_t);
IMPL (bzero, 1)
IMPL (memset_zero, 0)
+#endif
static void
do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, CHAR *s_end,
@@ -45,7 +59,11 @@ do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, CHAR *s_end,
TIMING_NOW (start);
for (i = 0; i < iters && s <= s_end; s_end -= n, i++)
+#ifdef DO_MEMSET
+ CALL (impl, s, 0, n);
+#else
CALL (impl, s, n);
+#endif
TIMING_NOW (stop);
TIMING_DIFF (cur, start, stop);
@@ -116,3 +134,13 @@ test_main (void)
}
#include <support/test-driver.c>
+
+#ifdef DO_MEMSET
+# define libc_hidden_builtin_def(X)
+# define libc_hidden_def(X)
+# define libc_hidden_weak(X)
+# define weak_alias(X,Y)
+# undef MEMSET
+# define MEMSET generic_memset
+# include <string/memset.c>
+#endif
diff --git a/benchtests/bench-bzero.c b/benchtests/bench-bzero.c
index 93ec521725..500b7eba96 100644
--- a/benchtests/bench-bzero.c
+++ b/benchtests/bench-bzero.c
@@ -17,12 +17,25 @@
<https://www.gnu.org/licenses/>. */
#define TEST_MAIN
-#define TEST_NAME "bzero"
+#ifdef DO_MEMSET
+# define TEST_NAME "memset"
+#else
+# define TEST_NAME "bzero"
+#endif
#define MIN_PAGE_SIZE 131072
#include "bench-string.h"
#include "json-lib.h"
+#ifdef DO_MEMSET
+void *generic_memset (void *, int, size_t);
+
+typedef void *(*proto_t) (void *, int, size_t);
+
+IMPL (memset, 1)
+IMPL (generic_memset, 0)
+
+#else
static void
memset_zero (void * s, size_t len)
{
@@ -33,6 +46,7 @@ typedef void (*proto_t) (void *, size_t);
IMPL (bzero, 1)
IMPL (memset_zero, 0)
+#endif
static void
do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, size_t n)
@@ -43,7 +57,11 @@ do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, size_t n)
TIMING_NOW (start);
for (i = 0; i < iters; ++i)
{
+#ifdef DO_MEMSET
+ CALL (impl, s, 0, n);
+#else
CALL (impl, s, n);
+#endif
}
TIMING_NOW (stop);
@@ -132,3 +150,13 @@ test_main (void)
}
#include <support/test-driver.c>
+
+#ifdef DO_MEMSET
+# define libc_hidden_builtin_def(X)
+# define libc_hidden_def(X)
+# define libc_hidden_weak(X)
+# define weak_alias(X,Y)
+# undef MEMSET
+# define MEMSET generic_memset
+# include <string/memset.c>
+#endif
diff --git a/benchtests/bench-memset-zero-large.c b/benchtests/bench-memset-zero-large.c
new file mode 100644
index 0000000000..bc938cdfff
--- /dev/null
+++ b/benchtests/bench-memset-zero-large.c
@@ -0,0 +1,20 @@
+/* Measure memset functions for zeroing with large data sizes.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#define DO_MEMSET 1
+#include "bench-bzero-large.c"
diff --git a/benchtests/bench-memset-zero-walk.c b/benchtests/bench-memset-zero-walk.c
new file mode 100644
index 0000000000..dce4b43e06
--- /dev/null
+++ b/benchtests/bench-memset-zero-walk.c
@@ -0,0 +1,20 @@
+/* Measure memset functions for zeroing throughput with large data sizes.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#define DO_MEMSET 1
+#include "bench-bzero-walk.c"
diff --git a/benchtests/bench-memset-zero.c b/benchtests/bench-memset-zero.c
new file mode 100644
index 0000000000..535005f0e6
--- /dev/null
+++ b/benchtests/bench-memset-zero.c
@@ -0,0 +1,20 @@
+/* Measure memset functions for zeroing.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#define DO_MEMSET 1
+#include "bench-bzero.c"
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