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| author | Qi Wang <interwq@gwu.edu> | 2017-08-24 21:29:28 (GMT) |
|---|---|---|
| committer | Qi Wang <interwq@gmail.com> | 2017-08-30 23:47:32 (GMT) |
| commit | 47b20bb6544de9cdd4ca7ab870d6ad257c0ce4ff (patch) | |
| tree | 0c7a06a91a4c7988b9d95cbc0595c29403395fd9 /include | |
| parent | ea91dfa58e11373748f747041c3041f72c9a7658 (diff) | |
| download | jemalloc-47b20bb6544de9cdd4ca7ab870d6ad257c0ce4ff.zip jemalloc-47b20bb6544de9cdd4ca7ab870d6ad257c0ce4ff.tar.gz jemalloc-47b20bb6544de9cdd4ca7ab870d6ad257c0ce4ff.tar.bz2 | |
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.
Diffstat (limited to 'include')
| -rw-r--r-- | include/jemalloc/internal/base_externs.h | 3 | ||||
| -rw-r--r-- | include/jemalloc/internal/base_inlines.h | 4 | ||||
| -rw-r--r-- | include/jemalloc/internal/base_types.h | 17 |
3 files changed, 22 insertions, 2 deletions
diff --git a/include/jemalloc/internal/base_externs.h b/include/jemalloc/internal/base_externs.h index a5cb8a8..6cd1187 100644 --- a/include/jemalloc/internal/base_externs.h +++ b/include/jemalloc/internal/base_externs.h @@ -1,7 +1,8 @@ #ifndef JEMALLOC_INTERNAL_BASE_EXTERNS_H #define JEMALLOC_INTERNAL_BASE_EXTERNS_H -extern bool opt_metadata_thp; +extern metadata_thp_mode_t opt_metadata_thp; +extern const char *metadata_thp_mode_names[]; base_t *b0get(void); base_t *base_new(tsdn_t *tsdn, unsigned ind, extent_hooks_t *extent_hooks); diff --git a/include/jemalloc/internal/base_inlines.h b/include/jemalloc/internal/base_inlines.h index 931560b..aec0e2e 100644 --- a/include/jemalloc/internal/base_inlines.h +++ b/include/jemalloc/internal/base_inlines.h @@ -6,4 +6,8 @@ base_ind_get(const base_t *base) { return base->ind; } +static inline bool +metadata_thp_enabled(void) { + return (opt_metadata_thp != metadata_thp_disabled); +} #endif /* JEMALLOC_INTERNAL_BASE_INLINES_H */ diff --git a/include/jemalloc/internal/base_types.h b/include/jemalloc/internal/base_types.h index 6e71033..97e38a9 100644 --- a/include/jemalloc/internal/base_types.h +++ b/include/jemalloc/internal/base_types.h @@ -4,6 +4,21 @@ typedef struct base_block_s base_block_t; typedef struct base_s base_t; -#define METADATA_THP_DEFAULT false +#define METADATA_THP_DEFAULT metadata_thp_disabled + +typedef enum { + metadata_thp_disabled = 0, + /* + * Lazily enable hugepage for metadata. To avoid high RSS caused by THP + * + low usage arena (i.e. THP becomes a significant percentage), the + * "auto" option only starts 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. + */ + metadata_thp_auto = 1, + metadata_thp_always = 2, + metadata_thp_mode_limit = 3 +} metadata_thp_mode_t; #endif /* JEMALLOC_INTERNAL_BASE_TYPES_H */ |