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lib:talloc: Increase alloc size to 128 kilobytes

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We want to avoid that the optimizer will use stack allocations. This way
the test should be a bit more realistic.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This commit is contained in:
Andreas Schneider 2023-04-27 11:24:59 +02:00 committed by Martin Schwenke
parent 00d5982da2
commit 39c13f062a
1 changed files with 20 additions and 16 deletions
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36
lib/talloc/testsuite.c
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@ -859,6 +859,10 @@ static bool test_unref_reparent(void)
return true;
}
/* Make the size big enough to not fit into the stack */
#define ALLOC_SIZE (128 * 1024)
#define ALLOC_DUP_STRING "talloc talloc talloc talloc talloc talloc talloc"
/*
measure the speed of talloc versus malloc
*/
@ -878,9 +882,9 @@ static bool test_speed(void)
do {
void *p1, *p2, *p3;
for (i=0;i<loop;i++) {
p1 = talloc_size(ctx, loop % 100);
p2 = talloc_strdup(p1, "foo bar");
p3 = talloc_size(p1, 300);
p1 = talloc_size(ctx, loop % ALLOC_SIZE);
p2 = talloc_strdup(p1, ALLOC_DUP_STRING);
p3 = talloc_size(p1, ALLOC_SIZE);
(void)p2;
(void)p3;
talloc_free(p1);
@ -892,16 +896,16 @@ static bool test_speed(void)
talloc_free(ctx);
ctx = talloc_pool(NULL, 1024);
ctx = talloc_pool(NULL, ALLOC_SIZE * 2);
tv = private_timeval_current();
count = 0;
do {
void *p1, *p2, *p3;
for (i=0;i<loop;i++) {
p1 = talloc_size(ctx, loop % 100);
p2 = talloc_strdup(p1, "foo bar");
p3 = talloc_size(p1, 300);
p1 = talloc_size(ctx, loop % ALLOC_SIZE);
p2 = talloc_strdup(p1, ALLOC_DUP_STRING);
p3 = talloc_size(p1, ALLOC_SIZE);
(void)p2;
(void)p3;
talloc_free(p1);
@ -918,9 +922,9 @@ static bool test_speed(void)
do {
void *p1, *p2, *p3;
for (i=0;i<loop;i++) {
p1 = malloc(loop % 100);
p2 = strdup("foo bar");
p3 = malloc(300);
p1 = malloc(loop % ALLOC_SIZE);
p2 = strdup(ALLOC_DUP_STRING);
p3 = malloc(ALLOC_SIZE);
free(p1);
free(p2);
free(p3);
@ -938,9 +942,9 @@ static bool test_speed(void)
do {
void *p1, *p2, *p3;
for (i=0;i<loop;i++) {
p1 = talloc_zero_size(ctx, loop % 100);
p2 = talloc_strdup(p1, "foo bar");
p3 = talloc_zero_size(p1, 300);
p1 = talloc_zero_size(ctx, loop % ALLOC_SIZE);
p2 = talloc_strdup(p1, ALLOC_DUP_STRING);
p3 = talloc_zero_size(p1, ALLOC_SIZE);
(void)p2;
(void)p3;
talloc_free(p1);
@ -957,9 +961,9 @@ static bool test_speed(void)
do {
void *p1, *p2, *p3;
for (i=0;i<loop;i++) {
p1 = calloc(1, loop % 100);
p2 = strdup("foo bar");
p3 = calloc(1, 300);
p1 = calloc(1, loop % ALLOC_SIZE);
p2 = strdup(ALLOC_DUP_STRING);
p3 = calloc(1, ALLOC_SIZE);
free(p1);
free(p2);
free(p3);