lihao/jemalloc
1
0
Fork 0
mirror of https://github.com/jemalloc/jemalloc.git synced 2026-07-24 13:53:11 +00:00
Code Issues Packages Projects Releases Wiki Activity

HPA: Allow frequent reused alloc to bypass the slab_max_alloc limit, as long as

Browse Source 
it's within the huge page size.  These requests do not concern internal
fragmentation with huge pages, since the entire range is expected to be
accessed.
This commit is contained in:
Qi Wang
2024-01-16 13:07:58 -08:00
committed by Qi Wang
parent b1792c80d2
commit a2c5267409
6 changed files with 51 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
test/unit/hpa.c
View File

@@ -84,12 +84,25 @@ TEST_BEGIN(test_alloc_max) {
/* Small max */
bool deferred_work_generated = false;
edata = pai_alloc(tsdn, &shard->pai, ALLOC_MAX, PAGE, false, false,
false, &deferred_work_generated);
/* frequent_reuse */ false, &deferred_work_generated);
expect_ptr_not_null(edata, "Allocation of small max failed");
edata = pai_alloc(tsdn, &shard->pai, ALLOC_MAX + PAGE, PAGE, false,
false, false, &deferred_work_generated);
false, /* frequent_reuse */ false, &deferred_work_generated);
expect_ptr_null(edata, "Allocation of larger than small max succeeded");
edata = pai_alloc(tsdn, &shard->pai, ALLOC_MAX, PAGE, false,
false, /* frequent_reuse */ true, &deferred_work_generated);
expect_ptr_not_null(edata, "Allocation of frequent reused failed");
edata = pai_alloc(tsdn, &shard->pai, HUGEPAGE, PAGE, false,
false, /* frequent_reuse */ true, &deferred_work_generated);
expect_ptr_not_null(edata, "Allocation of frequent reused failed");
edata = pai_alloc(tsdn, &shard->pai, HUGEPAGE + PAGE, PAGE, false,
false, /* frequent_reuse */ true, &deferred_work_generated);
expect_ptr_null(edata, "Allocation of larger than hugepage succeeded");
destroy_test_data(shard);
}
TEST_END
@@ -273,7 +286,7 @@ TEST_BEGIN(test_alloc_dalloc_batch) {
edata_list_active_t allocs_list;
edata_list_active_init(&allocs_list);
size_t nsuccess = pai_alloc_batch(tsdn, &shard->pai, PAGE, NALLOCS / 2,
&allocs_list, &deferred_work_generated);
&allocs_list, /* frequent_reuse */ false, &deferred_work_generated);
expect_zu_eq(NALLOCS / 2, nsuccess, "Unexpected oom");
for (size_t i = NALLOCS / 2; i < NALLOCS; i++) {
allocs[i] = edata_list_active_first(&allocs_list);