From eb332f9feb7637eeefed037a683d2a6130d058b1 Mon Sep 17 00:00:00 2001 From: Siddhesh Poyarekar Date: Mon, 20 Nov 2017 17:56:35 +0530 Subject: [PATCH] benchtests: Bump start size since smaller sizes are noisy Numbers for very small sizes (< 128B) are much noisier for non-cached benchmarks like the walk benchmarks, so don't include them. * benchtests/bench-memcpy-walk.c (START_SIZE): Set to 128. * benchtests/bench-memmove-walk.c (START_SIZE): Likewise. * benchtests/bench-memset-walk.c (START_SIZE): Likewise. --- ChangeLog | 4 ++++ benchtests/bench-memcpy-walk.c | 2 +- benchtests/bench-memmove-walk.c | 2 +- benchtests/bench-memset-walk.c | 2 +- 4 files changed, 7 insertions(+), 3 deletions(-) diff --git a/ChangeLog b/ChangeLog index 746222d..4c2c5bd 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2017-11-20 Siddhesh Poyarekar + * benchtests/bench-memcpy-walk.c (START_SIZE): Set to 128. + * benchtests/bench-memmove-walk.c (START_SIZE): Likewise. + * benchtests/bench-memset-walk.c (START_SIZE): Likewise. + * benchtests/bench-memcpy-walk.c (do_one_test): Copy only backwards. Fix timing computation. * benchtests/bench-memmove-walk.c (do_one_test): Likewise. diff --git a/benchtests/bench-memcpy-walk.c b/benchtests/bench-memcpy-walk.c index 5b56341..ef90a92 100644 --- a/benchtests/bench-memcpy-walk.c +++ b/benchtests/bench-memcpy-walk.c @@ -29,7 +29,7 @@ #ifndef MEMCPY_RESULT # define MEMCPY_RESULT(dst, len) dst -# define START_SIZE 1 +# define START_SIZE 128 # define MIN_PAGE_SIZE (getpagesize () + 32 * 1024 * 1024) # define TEST_MAIN # define TEST_NAME "memcpy" diff --git a/benchtests/bench-memmove-walk.c b/benchtests/bench-memmove-walk.c index 969ddd9..189ce64 100644 --- a/benchtests/bench-memmove-walk.c +++ b/benchtests/bench-memmove-walk.c @@ -29,7 +29,7 @@ #ifndef MEMMOVE_RESULT # define MEMMOVE_RESULT(dst, len) dst -# define START_SIZE 1 +# define START_SIZE 128 # define MIN_PAGE_SIZE (getpagesize () + 32 * 1024 * 1024) # define TEST_MAIN # define TEST_NAME "memmove" diff --git a/benchtests/bench-memset-walk.c b/benchtests/bench-memset-walk.c index 80fbe09..213bb60 100644 --- a/benchtests/bench-memset-walk.c +++ b/benchtests/bench-memset-walk.c @@ -22,7 +22,7 @@ #else # define TEST_NAME "wmemset" #endif /* WIDE */ -#define START_SIZE (1) +#define START_SIZE 128 #define MIN_PAGE_SIZE (getpagesize () + 32 * 1024 * 1024) #define TIMEOUT (20 * 60) #include "bench-string.h" -- 2.7.4