Change opt.metadata_thp to [disabled,auto,always].

To avoid the high RSS caused by THP + low usage arena (i.e. THP becomes a
significant percentage), added a new "auto" option which will only start using
THP after a base allocator used up the first THP region.  Starting from the
second hugepage (in a single arena), "auto" behaves the same as "always",
i.e. madvise hugepage right away.
This commit is contained in:
Qi Wang
2017-08-24 14:29:28 -07:00
committed by Qi Wang
parent ea91dfa58e
commit 47b20bb654
10 changed files with 84 additions and 25 deletions

View File

@@ -158,7 +158,7 @@ TEST_BEGIN(test_mallctl_opt) {
TEST_MALLCTL_OPT(bool, abort, always);
TEST_MALLCTL_OPT(bool, abort_conf, always);
TEST_MALLCTL_OPT(bool, metadata_thp, always);
TEST_MALLCTL_OPT(const char *, metadata_thp, always);
TEST_MALLCTL_OPT(bool, retain, always);
TEST_MALLCTL_OPT(const char *, dss, always);
TEST_MALLCTL_OPT(unsigned, narenas, always);