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| author | Wilco Dijkstra <wilco.dijkstra@arm.com> | 2024-03-18 15:05:38 +0000 |
|---|---|---|
| committer | Wilco Dijkstra <wilco.dijkstra@arm.com> | 2025-03-05 13:29:48 +0000 |
| commit | dac7ea4a6fb8111e60fc35c104302800cf986ad2 (patch) | |
| tree | b121126bd84061ad0e1f807923c52fbcafe95f7e /benchtests/bench-memcpy-large.c | |
| parent | 226476e32251b5688eead482a9338c04ce84d715 (diff) | |
| download | glibc-dac7ea4a6fb8111e60fc35c104302800cf986ad2.tar.xz glibc-dac7ea4a6fb8111e60fc35c104302800cf986ad2.zip | |
benchtests: Improve large memcpy/memset benchmarks
Adjust sizes between 64KB and 16MB and iterations based on length.
Remove incorrect uses of alloc_bufs since we're not interested in measuring
Linux clear_page time. Use getpagesize() - 1 instead of 4095 when
aligning within a page.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'benchtests/bench-memcpy-large.c')
| -rw-r--r-- | benchtests/bench-memcpy-large.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/benchtests/bench-memcpy-large.c b/benchtests/bench-memcpy-large.c index cb83bac2bf..c5bd759dd5 100644 --- a/benchtests/bench-memcpy-large.c +++ b/benchtests/bench-memcpy-large.c @@ -19,10 +19,9 @@ #ifndef MEMCPY_RESULT # define MEMCPY_RESULT(dst, len) dst # define START_SIZE (64 * 1024) -# define MIN_PAGE_SIZE (getpagesize () + 32 * 1024 * 1024) +# define MIN_PAGE_SIZE (getpagesize () + 16 * 1024 * 1024) # define TEST_MAIN # define TEST_NAME "memcpy" -# define TIMEOUT (20 * 60) # include "bench-string.h" IMPL (memcpy, 1) @@ -36,7 +35,7 @@ static void do_one_test (json_ctx_t *json_ctx, impl_t *impl, char *dst, const char *src, size_t len) { - size_t i, iters = 16; + size_t i, iters = (MIN_PAGE_SIZE * 8) / len; timing_t start, stop, cur; TIMING_NOW (start); @@ -59,12 +58,7 @@ do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len, char *s1, *s2; size_t repeats; align1 &= 4095; - if (align1 + len >= page_size) - return; - align2 &= 4095; - if (align2 + len >= page_size) - return; s1 = (char *) (buf1 + align1); s2 = (char *) (buf2 + align2); |