From: H.J. Lu Date: Wed, 9 Feb 2022 15:31:41 +0000 (-0800) Subject: benchtests: Add benches for memset with 0 value X-Git-Tag: glibc-2.36~654 X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=cf975913131169a753acf0621e08e72bc40a91e2;p=glibc.git 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 --- 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 @@ . */ #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 + +#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 +#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 @@ . */ #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 + +#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 +#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 @@ . */ #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 + +#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 +#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 + . */ + +#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 + . */ + +#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 + . */ + +#define DO_MEMSET 1 +#include "bench-bzero.c"