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Add memcpy/memmove/memset benchmarks with large data

Add memcpy, memmove and memset benchmarks with large data sizes.

	* benchtests/Makefile (string-benchset): Add memcpy-large,
	memmove-large and memset-large.
	* benchtests/bench-memcpy-large.c: New file.
	* benchtests/bench-memmove-large.c: Likewise.
	* benchtests/bench-memmove-large.c: Likewise.
	* benchtests/bench-string.h (TIMEOUT): Don't redefine.
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H.J. Lu
H.J. Lu committed Apr 6, 2016
1 parent aa7353c commit a25322f4e855eb5b24c63c2395c941c3327627ca
Showing with 393 additions and 2 deletions.
  1. +9 −0 ChangeLog
  2. +1 −1 benchtests/Makefile
  3. +123 −0 benchtests/bench-memcpy-large.c
  4. +123 −0 benchtests/bench-memmove-large.c
  5. +134 −0 benchtests/bench-memset-large.c
  6. +3 −1 benchtests/bench-string.h
@@ -1,3 +1,12 @@
2016-04-06 H.J. Lu <hongjiu.lu@intel.com>

* benchtests/Makefile (string-benchset): Add memcpy-large,
memmove-large and memset-large.
* benchtests/bench-memcpy-large.c: New file.
* benchtests/bench-memmove-large.c: Likewise.
* benchtests/bench-memmove-large.c: Likewise.
* benchtests/bench-string.h (TIMEOUT): Don't redefine.

2016-04-05 H.J. Lu <hongjiu.lu@intel.com>

* sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S: Force
@@ -38,7 +38,7 @@ string-benchset := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
strcat strchr strchrnul strcmp strcpy strcspn strlen \
strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \
strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok \
strcoll
strcoll memcpy-large memmove-large memset-large
wcsmbs-benchset := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat \
wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk wcscspn \
wmemchr wmemset wmemcmp
@@ -0,0 +1,123 @@
/* Measure memcpy functions with large data sizes.
Copyright (C) 2016 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
<http://www.gnu.org/licenses/>. */

#ifndef MEMCPY_RESULT
# define MEMCPY_RESULT(dst, len) dst
# define START_SIZE (64 * 1024)
# define MIN_PAGE_SIZE (getpagesize () + 32 * 1024 * 1024)
# define TEST_MAIN
# define TEST_NAME "memcpy"
# define TIMEOUT (20 * 60)
# include "bench-string.h"

IMPL (memcpy, 1)
#endif

typedef char *(*proto_t) (char *, const char *, size_t);

static void
do_one_test (impl_t *impl, char *dst, const char *src,
size_t len)
{
size_t i, iters = 16;
timing_t start, stop, cur;

/* Must clear the destination buffer updated by the previous run. */
for (i = 0; i < len; i++)
dst[i] = 0;

if (CALL (impl, dst, src, len) != MEMCPY_RESULT (dst, len))
{
error (0, 0, "Wrong result in function %s %p %p", impl->name,
CALL (impl, dst, src, len), MEMCPY_RESULT (dst, len));
ret = 1;
return;
}

if (memcmp (dst, src, len) != 0)
{
error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
impl->name, dst, src);
ret = 1;
return;
}

TIMING_NOW (start);
for (i = 0; i < iters; ++i)
{
CALL (impl, dst, src, len);
}
TIMING_NOW (stop);

TIMING_DIFF (cur, start, stop);

TIMING_PRINT_MEAN ((double) cur, (double) iters);
}

static void
do_test (size_t align1, size_t align2, size_t len)
{
size_t i, j;
char *s1, *s2;

align1 &= 63;
if (align1 + len >= page_size)
return;

align2 &= 63;
if (align2 + len >= page_size)
return;

s1 = (char *) (buf1 + align1);
s2 = (char *) (buf2 + align2);

for (i = 0, j = 1; i < len; i++, j += 23)
s1[i] = j;

printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);

FOR_EACH_IMPL (impl, 0)
do_one_test (impl, s2, s1, len);

putchar ('\n');
}

int
test_main (void)
{
size_t i;

test_init ();

printf ("%23s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');

for (i = START_SIZE; i <= MIN_PAGE_SIZE; i <<= 1)
{
do_test (0, 0, i + 7);
do_test (0, 3, i + 15);
do_test (3, 0, i + 31);
do_test (3, 5, i + 63);
}

return ret;
}

#include "../test-skeleton.c"
@@ -0,0 +1,123 @@
/* Measure memmove functions with large data sizes.
Copyright (C) 2016 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
<http://www.gnu.org/licenses/>. */

#define BASE_PAGE_SIZE (1024 * 1024)
#define START_SIZE (4 * 1024)
#define MIN_PAGE_SIZE (getpagesize () + 16 * 1024 * 1024)
#define TEST_MAIN
#define TEST_NAME "memmove"
#define TIMEOUT (20 * 60)
#include "bench-string.h"

IMPL (memmove, 1)

typedef char *(*proto_t) (char *, const char *, size_t);

static void
do_one_test (impl_t *impl, char *dst, char *src, const char *orig_src,
size_t len)
{
size_t i, iters = 16;
timing_t start, stop, cur;

/* This also clears the destination buffer updated by the previous
run. */
memcpy (src, orig_src, len);

char *res = CALL (impl, dst, src, len);
if (res != dst)
{
error (0, 0, "Wrong result in function %s %p %p", impl->name,
res, dst);
ret = 1;
return;
}

if (memcmp (dst, orig_src, len) != 0)
{
error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
impl->name, dst, src);
ret = 1;
return;
}

TIMING_NOW (start);
for (i = 0; i < iters; ++i)
{
CALL (impl, dst, src, len);
}
TIMING_NOW (stop);

TIMING_DIFF (cur, start, stop);

TIMING_PRINT_MEAN ((double) cur, (double) iters);
}

static void
do_test (size_t align1, size_t align2, size_t len)
{
size_t i, j;
char *s1, *s2;

align1 &= 127;
if (align1 + len >= page_size)
return;

align2 &= 127;
if (align2 + len >= page_size)
return;

s1 = (char *) (buf1 + align1);
s2 = (char *) (buf2 + align2);

for (i = 0, j = 1; i < len; i++, j += 23)
s1[i] = j;

printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);

FOR_EACH_IMPL (impl, 0)
do_one_test (impl, s2, (char *) (buf2 + align1), s1, len);

putchar ('\n');
}

int
test_main (void)
{
size_t i;

test_init ();

printf ("%23s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');

for (i = START_SIZE; i <= MIN_PAGE_SIZE; i <<= 1)
{
do_test (0, 64, i + 7);
do_test (0, 3, i + 15);
do_test (3, 0, i + 31);
do_test (3, 7, i + 63);
do_test (9, 5, i + 127);
}

return ret;
}

#include "../test-skeleton.c"

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