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| author | Qi Wang <interwq@gwu.edu> | 2017-10-31 21:17:40 (GMT) |
|---|---|---|
| committer | Qi Wang <interwq@gmail.com> | 2017-11-01 20:52:06 (GMT) |
| commit | 58eba024c0fbda463eaf8b42772407894dba6eff (patch) | |
| tree | e3d16aae1d58c22094a031c76f1e0d4abe31a198 /include | |
| parent | 47203d5f422452def4cb29c0b7128cc068031100 (diff) | |
| download | jemalloc-58eba024c0fbda463eaf8b42772407894dba6eff.zip jemalloc-58eba024c0fbda463eaf8b42772407894dba6eff.tar.gz jemalloc-58eba024c0fbda463eaf8b42772407894dba6eff.tar.bz2 | |
metadata_thp: auto mode adjustment for a0.
We observed that arena 0 can have much more metadata allocated comparing to
other arenas. Tune the auto mode to only switch to huge page on the 5th block
(instead of 3 previously) for a0.
Diffstat (limited to 'include')
| -rw-r--r-- | include/jemalloc/internal/base_types.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/jemalloc/internal/base_types.h b/include/jemalloc/internal/base_types.h index 97e38a9..b6db77d 100644 --- a/include/jemalloc/internal/base_types.h +++ b/include/jemalloc/internal/base_types.h @@ -6,6 +6,15 @@ typedef struct base_s base_t; #define METADATA_THP_DEFAULT metadata_thp_disabled +/* + * In auto mode, arenas switch to huge pages for the base allocator on the + * second base block. a0 switches to thp on the 5th block (after 20 megabytes + * of metadata), since more metadata (e.g. rtree nodes) come from a0's base. + */ + +#define BASE_AUTO_THP_THRESHOLD 2 +#define BASE_AUTO_THP_THRESHOLD_A0 5 + typedef enum { metadata_thp_disabled = 0, /* |