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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2017-11-20 17:56:35 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2017-11-20 18:03:32 +0530 |
| commit | eb332f9feb7637eeefed037a683d2a6130d058b1 (patch) | |
| tree | 5483964821d7e8a62fb669d2d625a8c4501a8f38 | |
| parent | 4d7632ff687dc60fb9ed38bae682d395017b61a8 (diff) | |
| download | glibc-eb332f9feb7637eeefed037a683d2a6130d058b1.tar.gz glibc-eb332f9feb7637eeefed037a683d2a6130d058b1.tar.xz glibc-eb332f9feb7637eeefed037a683d2a6130d058b1.zip | |
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.
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | benchtests/bench-memcpy-walk.c | 2 | ||||
| -rw-r--r-- | benchtests/bench-memmove-walk.c | 2 | ||||
| -rw-r--r-- | benchtests/bench-memset-walk.c | 2 |
4 files changed, 7 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog index 746222d423..4c2c5bd10c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2017-11-20 Siddhesh Poyarekar <siddhesh@sourceware.org> + * 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 5b563411ad..ef90a929f8 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 969ddd94a2..189ce64a76 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 80fbe092b8..213bb60ede 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" |