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[PATCH 2/3] benchtests: Bump start size since smaller sizes are noisy
- From: Siddhesh Poyarekar <siddhesh at sourceware dot org>
- To: libc-alpha at sourceware dot org
- Cc: Wilco dot Dijkstra at arm dot com, szabolcs dot nagy at arm dot com
- Date: Thu, 9 Nov 2017 10:43:27 +0530
- Subject: [PATCH 2/3] benchtests: Bump start size since smaller sizes are noisy
- Authentication-results: sourceware.org; auth=none
- References: <1510204408-1739-1-git-send-email-siddhesh@sourceware.org>
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.
---
benchtests/bench-memcpy-walk.c | 2 +-
benchtests/bench-memmove-walk.c | 2 +-
benchtests/bench-memset-walk.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
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"
--
2.7.5