* [COMMITTED] Reallocate buffers for every run in strlen
2018-08-16 8:43 [COMMITTED] Print strlen benchmark output in json Siddhesh Poyarekar
@ 2018-08-16 8:43 ` Siddhesh Poyarekar
0 siblings, 0 replies; 2+ messages in thread
From: Siddhesh Poyarekar @ 2018-08-16 8:43 UTC (permalink / raw)
To: libc-alpha
Try and avoid influencing performance of neighbouring functions.
---
ChangeLog | 3 +++
benchtests/bench-strlen.c | 17 ++++++++++-------
2 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index ec444a339e..cd60ef8399 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
2018-08-16 Siddhesh Poyarekar <siddhesh@sourceware.org>
+ * benchtests/bench-strlen.c (do_test): Allocate buffers before
+ every strlen call.
+
* benchtests/bench-strlen.c: Print performance numbers in json.
2018-08-16 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
diff --git a/benchtests/bench-strlen.c b/benchtests/bench-strlen.c
index 6782215e7e..576849400f 100644
--- a/benchtests/bench-strlen.c
+++ b/benchtests/bench-strlen.c
@@ -96,12 +96,6 @@ do_test (json_ctx_t *json_ctx, size_t align, size_t len)
if (align + sizeof(CHAR) * len >= page_size)
return;
- CHAR *buf = (CHAR *) (buf1);
-
- for (i = 0; i < len; ++i)
- buf[align + i] = 1 + 11111 * i % MAX_CHAR;
- buf[align + len] = 0;
-
json_element_object_begin (json_ctx);
json_attr_uint (json_ctx, "length", len);
json_attr_uint (json_ctx, "alignment", align);
@@ -109,7 +103,16 @@ do_test (json_ctx_t *json_ctx, size_t align, size_t len)
FOR_EACH_IMPL (impl, 0)
- do_one_test (json_ctx, impl, (CHAR *) (buf + align), len);
+ {
+ CHAR *buf = (CHAR *) (buf1);
+
+ for (i = 0; i < len; ++i)
+ buf[align + i] = 1 + 11111 * i % MAX_CHAR;
+ buf[align + len] = 0;
+
+ do_one_test (json_ctx, impl, (CHAR *) (buf + align), len);
+ alloc_bufs ();
+ }
json_array_end (json_ctx);
json_element_object_end (json_ctx);
--
2.17.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* [COMMITTED] Print strlen benchmark output in json
@ 2018-08-16 8:43 Siddhesh Poyarekar
2018-08-16 8:43 ` [COMMITTED] Reallocate buffers for every run in strlen Siddhesh Poyarekar
0 siblings, 1 reply; 2+ messages in thread
From: Siddhesh Poyarekar @ 2018-08-16 8:43 UTC (permalink / raw)
To: libc-alpha
Allow reading the benchmark using the compare_strings.py script.
---
ChangeLog | 4 +++
benchtests/bench-strlen.c | 53 ++++++++++++++++++++++++++++-----------
2 files changed, 42 insertions(+), 15 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index dedffaa9d3..ec444a339e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2018-08-16 Siddhesh Poyarekar <siddhesh@sourceware.org>
+
+ * benchtests/bench-strlen.c: Print performance numbers in json.
+
2018-08-16 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
* sysdeps/powerpc/powerpc64/multiarch/Makefile
diff --git a/benchtests/bench-strlen.c b/benchtests/bench-strlen.c
index 215b5bb6e1..6782215e7e 100644
--- a/benchtests/bench-strlen.c
+++ b/benchtests/bench-strlen.c
@@ -35,6 +35,8 @@
# define MAX_CHAR WCHAR_MAX
#endif
+#include "json-lib.h"
+
typedef size_t (*proto_t) (const CHAR *);
size_t
@@ -60,7 +62,7 @@ IMPL (STRLEN, 1)
static void
-do_one_test (impl_t *impl, const CHAR *s, size_t exp_len)
+do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s, size_t exp_len)
{
size_t len = CALL (impl, s), i, iters = INNER_LOOP_ITERS;
timing_t start, stop, cur;
@@ -82,11 +84,11 @@ do_one_test (impl_t *impl, const CHAR *s, size_t exp_len)
TIMING_DIFF (cur, start, stop);
- TIMING_PRINT_MEAN ((double) cur, (double) iters);
+ json_element_double (json_ctx, (double) cur / (double) iters);
}
static void
-do_test (size_t align, size_t len)
+do_test (json_ctx_t *json_ctx, size_t align, size_t len)
{
size_t i;
@@ -100,42 +102,63 @@ do_test (size_t align, size_t len)
buf[align + i] = 1 + 11111 * i % MAX_CHAR;
buf[align + len] = 0;
- printf ("Length %4zd, alignment %2zd:", len, align);
+ json_element_object_begin (json_ctx);
+ json_attr_uint (json_ctx, "length", len);
+ json_attr_uint (json_ctx, "alignment", align);
+ json_array_begin (json_ctx, "timings");
+
FOR_EACH_IMPL (impl, 0)
- do_one_test (impl, (CHAR *) (buf + align), len);
+ do_one_test (json_ctx, impl, (CHAR *) (buf + align), len);
- putchar ('\n');
+ json_array_end (json_ctx);
+ json_element_object_end (json_ctx);
}
int
test_main (void)
{
+ json_ctx_t json_ctx;
size_t i;
test_init ();
- printf ("%20s", "");
+ json_init (&json_ctx, 0, stdout);
+
+ json_document_begin (&json_ctx);
+ json_attr_string (&json_ctx, "timing_type", TIMING_TYPE);
+
+ json_attr_object_begin (&json_ctx, "functions");
+ json_attr_object_begin (&json_ctx, TEST_NAME);
+ json_attr_string (&json_ctx, "bench-variant", "");
+
+ json_array_begin (&json_ctx, "ifuncs");
FOR_EACH_IMPL (impl, 0)
- printf ("\t%s", impl->name);
- putchar ('\n');
+ json_element_string (&json_ctx, impl->name);
+ json_array_end (&json_ctx);
+ json_array_begin (&json_ctx, "results");
/* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/
for (i = 1; i < 8; ++i)
{
- do_test (sizeof(CHAR) * i, i);
- do_test (0, i);
+ do_test (&json_ctx, sizeof(CHAR) * i, i);
+ do_test (&json_ctx, 0, i);
}
for (i = 2; i <= 12; ++i)
{
- do_test (0, 1 << i);
- do_test (sizeof(CHAR) * 7, 1 << i);
- do_test (sizeof(CHAR) * i, 1 << i);
- do_test (sizeof(CHAR) * i, (size_t)((1 << i) / 1.5));
+ do_test (&json_ctx, 0, 1 << i);
+ do_test (&json_ctx, sizeof(CHAR) * 7, 1 << i);
+ do_test (&json_ctx, sizeof(CHAR) * i, 1 << i);
+ do_test (&json_ctx, sizeof(CHAR) * i, (size_t)((1 << i) / 1.5));
}
+ json_array_end (&json_ctx);
+ json_attr_object_end (&json_ctx);
+ json_attr_object_end (&json_ctx);
+ json_document_end (&json_ctx);
+
return ret;
}
--
2.17.1
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2018-08-16 8:43 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-08-16 8:43 [COMMITTED] Print strlen benchmark output in json Siddhesh Poyarekar
2018-08-16 8:43 ` [COMMITTED] Reallocate buffers for every run in strlen Siddhesh Poyarekar
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).