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benchtests: Make memcpy benchmarks print results in json

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Print the benchmark output for various memcpy benchmarks in json so
that it can be predictably parsed and analyzed.

	* benchtests/bench-memcpy-large.c: Include json-lib.h.
	(do_one_test): Print json.
	(do_test): Likewise.
	(test_main): Likewise.
	* benchtests/bench-memcpy-random.c: Include json-lib.h.
	(do_one_test): Print json.
	(do_test): Likewise.
	(test_main): Likewise.
	* benchtests/bench-memcpy.c: Include json-lib.h.
	(do_one_test): Print json.
	(do_test): Likewise.
	(test_main): Likewise.
This commit is contained in:
Siddhesh Poyarekar 2017-06-22 23:44:19 +05:30
parent 738a9914a0
commit 5ee1e3cebc
3 changed files with 120 additions and 52 deletions
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51
benchtests/bench-memcpy-large.c
View File

@ -28,10 +28,12 @@
IMPL (memcpy, 1) IMPL (memcpy, 1)
#endif #endif
#include "json-lib.h"
typedef char *(*proto_t) (char *, const char *, size_t); typedef char *(*proto_t) (char *, const char *, size_t);
static void static void
do_one_test (impl_t *impl, char *dst, const char *src, do_one_test (json_ctx_t *json_ctx, impl_t *impl, char *dst, const char *src,
size_t len) size_t len)
{ {
size_t i, iters = 16; size_t i, iters = 16;
@ -66,11 +68,11 @@ do_one_test (impl_t *impl, char *dst, const char *src,
TIMING_DIFF (cur, start, stop); TIMING_DIFF (cur, start, stop);
TIMING_PRINT_MEAN ((double) cur, (double) iters); json_element_double (json_ctx, (double) cur / (double) iters);
} }
static void static void
do_test (size_t align1, size_t align2, size_t len) do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len)
{ {
size_t i, j; size_t i, j;
char *s1, *s2; char *s1, *s2;
@ -89,34 +91,55 @@ do_test (size_t align1, size_t align2, size_t len)
for (i = 0, j = 1; i < len; i++, j += 23) for (i = 0, j = 1; i < len; i++, j += 23)
s1[i] = j; s1[i] = j;
printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2); json_element_object_begin (json_ctx);
json_attr_uint (json_ctx, "length", (double) len);
json_attr_uint (json_ctx, "align1", (double) align1);
json_attr_uint (json_ctx, "align2", (double) align2);
json_array_begin (json_ctx, "timings");
FOR_EACH_IMPL (impl, 0) FOR_EACH_IMPL (impl, 0)
do_one_test (impl, s2, s1, len); do_one_test (json_ctx, impl, s2, s1, len);
putchar ('\n'); json_array_end (json_ctx);
json_element_object_end (json_ctx);
} }
int int
test_main (void) test_main (void)
{ {
json_ctx_t json_ctx;
size_t i; size_t i;
test_init (); test_init ();
printf ("%23s", ""); json_init (&json_ctx, 0, stdout);
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
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, "memcpy");
json_attr_string (&json_ctx, "bench-variant", "large");
json_array_begin (&json_ctx, "ifuncs");
FOR_EACH_IMPL (impl, 0)
json_element_string (&json_ctx, impl->name);
json_array_end (&json_ctx);
json_array_begin (&json_ctx, "results");
for (i = START_SIZE; i <= MIN_PAGE_SIZE; i <<= 1) for (i = START_SIZE; i <= MIN_PAGE_SIZE; i <<= 1)
{ {
do_test (0, 0, i + 7); do_test (&json_ctx, 0, 0, i + 7);
do_test (0, 3, i + 15); do_test (&json_ctx, 0, 3, i + 15);
do_test (3, 0, i + 31); do_test (&json_ctx, 3, 0, i + 31);
do_test (3, 5, i + 63); do_test (&json_ctx, 3, 5, i + 63);
} }
json_array_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_document_end (&json_ctx);
return ret; return ret;
} }

44
benchtests/bench-memcpy-random.c
View File

@ -21,6 +21,7 @@
#define TEST_NAME "memcpy" #define TEST_NAME "memcpy"
#include "bench-string.h" #include "bench-string.h"
#include <assert.h> #include <assert.h>
#include "json-lib.h"
IMPL (memcpy, 1) IMPL (memcpy, 1)
@ -96,7 +97,8 @@ init_copy_distribution (void)
static void static void
do_one_test (impl_t *impl, char *dst, char *src, copy_t *copy, size_t n) do_one_test (json_ctx_t *json_ctx, impl_t *impl, char *dst, char *src,
copy_t *copy, size_t n)
{ {
timing_t start, stop, cur; timing_t start, stop, cur;
size_t iters = INNER_LOOP_ITERS * 20; size_t iters = INNER_LOOP_ITERS * 20;
@ -109,11 +111,11 @@ do_one_test (impl_t *impl, char *dst, char *src, copy_t *copy, size_t n)
TIMING_DIFF (cur, start, stop); TIMING_DIFF (cur, start, stop);
TIMING_PRINT_MEAN ((double) cur, (double) iters); json_element_double (json_ctx, (double) cur / (double) iters);
} }
static void static void
do_test (size_t max_size) do_test (json_ctx_t *json_ctx, size_t max_size)
{ {
for (int i = 0; i < max_size; i++) for (int i = 0; i < max_size; i++)
buf1[i] = i * 3; buf1[i] = i * 3;
@ -129,27 +131,47 @@ do_test (size_t max_size)
copy[i].len = size_arr[rand () & SIZE_MASK]; copy[i].len = size_arr[rand () & SIZE_MASK];
} }
printf ("Memory size %6zd:", max_size); json_element_object_begin (json_ctx);
json_attr_uint (json_ctx, "max-size", (double) max_size);
json_array_begin (json_ctx, "timings");
FOR_EACH_IMPL (impl, 0) FOR_EACH_IMPL (impl, 0)
do_one_test (impl, (char *) buf2, (char *) buf1, copy, NUM_COPIES); do_one_test (json_ctx, impl, (char *) buf2, (char *) buf1, copy, NUM_COPIES);
putchar ('\n'); json_array_end (json_ctx);
json_element_object_end (json_ctx);
} }
int int
test_main (void) test_main (void)
{ {
json_ctx_t json_ctx;
test_init (); test_init ();
init_copy_distribution (); init_copy_distribution ();
printf ("%23s", ""); json_init (&json_ctx, 0, stdout);
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
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, "memcpy");
json_attr_string (&json_ctx, "bench-variant", "random");
json_array_begin (&json_ctx, "ifuncs");
FOR_EACH_IMPL (impl, 0)
json_element_string (&json_ctx, impl->name);
json_array_end (&json_ctx);
json_array_begin (&json_ctx, "results");
for (int i = 4; i <= 64; i = i * 2) for (int i = 4; i <= 64; i = i * 2)
do_test (i * 1024); do_test (&json_ctx, i * 1024);
json_array_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_document_end (&json_ctx);
return ret; return ret;
} }

77
benchtests/bench-memcpy.c
View File

@ -46,10 +46,12 @@ builtin_memcpy (char *dst, const char *src, size_t n)
} }
#endif #endif
# include "json-lib.h"
typedef char *(*proto_t) (char *, const char *, size_t); typedef char *(*proto_t) (char *, const char *, size_t);
static void static void
do_one_test (impl_t *impl, char *dst, const char *src, do_one_test (json_ctx_t *json_ctx, impl_t *impl, char *dst, const char *src,
size_t len) size_t len)
{ {
size_t i, iters = INNER_LOOP_ITERS; size_t i, iters = INNER_LOOP_ITERS;
@ -84,11 +86,11 @@ do_one_test (impl_t *impl, char *dst, const char *src,
TIMING_DIFF (cur, start, stop); TIMING_DIFF (cur, start, stop);
TIMING_PRINT_MEAN ((double) cur, (double) iters); json_element_double (json_ctx, (double) cur / (double) iters);
} }
static void static void
do_test (size_t align1, size_t align2, size_t len) do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len)
{ {
size_t i, j; size_t i, j;
char *s1, *s2; char *s1, *s2;
@ -107,61 +109,82 @@ do_test (size_t align1, size_t align2, size_t len)
for (i = 0, j = 1; i < len; i++, j += 23) for (i = 0, j = 1; i < len; i++, j += 23)
s1[i] = j; s1[i] = j;
printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2); json_element_object_begin (json_ctx);
json_attr_uint (json_ctx, "length", (double) len);
json_attr_uint (json_ctx, "align1", (double) align1);
json_attr_uint (json_ctx, "align2", (double) align2);
json_array_begin (json_ctx, "timings");
FOR_EACH_IMPL (impl, 0) FOR_EACH_IMPL (impl, 0)
do_one_test (impl, s2, s1, len); do_one_test (json_ctx, impl, s2, s1, len);
putchar ('\n'); json_array_end (json_ctx);
json_element_object_end (json_ctx);
} }
int int
test_main (void) test_main (void)
{ {
json_ctx_t json_ctx;
size_t i; size_t i;
test_init (); test_init ();
printf ("%23s", ""); json_init (&json_ctx, 0, stdout);
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
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, "memcpy");
json_attr_string (&json_ctx, "bench-variant", "default");
json_array_begin (&json_ctx, "ifuncs");
FOR_EACH_IMPL (impl, 0)
json_element_string (&json_ctx, impl->name);
json_array_end (&json_ctx);
json_array_begin (&json_ctx, "results");
for (i = 0; i < 18; ++i) for (i = 0; i < 18; ++i)
{ {
do_test (0, 0, 1 << i); do_test (&json_ctx, 0, 0, 1 << i);
do_test (i, 0, 1 << i); do_test (&json_ctx, i, 0, 1 << i);
do_test (0, i, 1 << i); do_test (&json_ctx, 0, i, 1 << i);
do_test (i, i, 1 << i); do_test (&json_ctx, i, i, 1 << i);
} }
for (i = 0; i < 32; ++i) for (i = 0; i < 32; ++i)
{ {
do_test (0, 0, i); do_test (&json_ctx, 0, 0, i);
do_test (i, 0, i); do_test (&json_ctx, i, 0, i);
do_test (0, i, i); do_test (&json_ctx, 0, i, i);
do_test (i, i, i); do_test (&json_ctx, i, i, i);
} }
for (i = 3; i < 32; ++i) for (i = 3; i < 32; ++i)
{ {
if ((i & (i - 1)) == 0) if ((i & (i - 1)) == 0)
continue; continue;
do_test (0, 0, 16 * i); do_test (&json_ctx, 0, 0, 16 * i);
do_test (i, 0, 16 * i); do_test (&json_ctx, i, 0, 16 * i);
do_test (0, i, 16 * i); do_test (&json_ctx, 0, i, 16 * i);
do_test (i, i, 16 * i); do_test (&json_ctx, i, i, 16 * i);
} }
for (i = 32; i < 64; ++i) for (i = 32; i < 64; ++i)
{ {
do_test (0, 0, 32 * i); do_test (&json_ctx, 0, 0, 32 * i);
do_test (i, 0, 32 * i); do_test (&json_ctx, i, 0, 32 * i);
do_test (0, i, 32 * i); do_test (&json_ctx, 0, i, 32 * i);
do_test (i, i, 32 * i); do_test (&json_ctx, i, i, 32 * i);
} }
do_test (0, 0, getpagesize ()); do_test (&json_ctx, 0, 0, getpagesize ());
json_array_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_document_end (&json_ctx);
return ret; return ret;
} }