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Make test/unit/background_thread_enable more conservative.

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To avoid resource exhaustion on 32-bit platforms.
This commit is contained in:
Qi Wang 2022-05-04 11:38:57 -07:00 committed by Qi Wang
parent a7d73dd4c9
commit 66c889500a
1 changed files with 19 additions and 8 deletions
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27
test/unit/background_thread_enable.c
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@ -2,12 +2,8 @@
const char *malloc_conf = "background_thread:false,narenas:1,max_background_threads:20"; const char *malloc_conf = "background_thread:false,narenas:1,max_background_threads:20";
TEST_BEGIN(test_deferred) { static unsigned
test_skip_if(!have_background_thread); max_test_narenas(void) {
unsigned id;
size_t sz_u = sizeof(unsigned);
/* /*
* 10 here is somewhat arbitrary, except insofar as we want to ensure * 10 here is somewhat arbitrary, except insofar as we want to ensure
* that the number of background threads is smaller than the number of * that the number of background threads is smaller than the number of
@ -15,7 +11,22 @@ TEST_BEGIN(test_deferred) {
* cpu to handle background purging, so this is a conservative * cpu to handle background purging, so this is a conservative
* approximation. * approximation.
*/ */
for (unsigned i = 0; i < 10 * ncpus; i++) { unsigned ret = 10 * ncpus;
/* Limit the max to avoid VM exhaustion on 32-bit . */
if (ret > 512) {
ret = 512;
}
return ret;
}
TEST_BEGIN(test_deferred) {
test_skip_if(!have_background_thread);
unsigned id;
size_t sz_u = sizeof(unsigned);
for (unsigned i = 0; i < max_test_narenas(); i++) {
expect_d_eq(mallctl("arenas.create", &id, &sz_u, NULL, 0), 0, expect_d_eq(mallctl("arenas.create", &id, &sz_u, NULL, 0), 0,
"Failed to create arena"); "Failed to create arena");
} }
@ -50,7 +61,7 @@ TEST_BEGIN(test_max_background_threads) {
unsigned id; unsigned id;
size_t sz_u = sizeof(unsigned); size_t sz_u = sizeof(unsigned);
for (unsigned i = 0; i < 10 * ncpus; i++) { for (unsigned i = 0; i < max_test_narenas(); i++) {
expect_d_eq(mallctl("arenas.create", &id, &sz_u, NULL, 0), 0, expect_d_eq(mallctl("arenas.create", &id, &sz_u, NULL, 0), 0,
"Failed to create arena"); "Failed to create arena");
} }