diff options
Diffstat (limited to 'include/mimalloc-types.h')
| -rw-r--r-- | include/mimalloc-types.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/include/mimalloc-types.h b/include/mimalloc-types.h index cd12418..6b9da83 100644 --- a/include/mimalloc-types.h +++ b/include/mimalloc-types.h @@ -308,12 +308,11 @@ typedef enum mi_segment_kind_e { // A segment holds a commit mask where a bit is set if // the corresponding MI_COMMIT_SIZE area is committed. // The MI_COMMIT_SIZE must be a multiple of the slice -// size. We define it as equal so we can decommit on a -// slice level which helps with (real) memory fragmentation -// over time. +// size. If it is equal we have the most fine grained +// decommit but in practice 2x seems to perform better. // ------------------------------------------------------ -#define MI_COMMIT_SIZE (MI_SEGMENT_SLICE_SIZE) +#define MI_COMMIT_SIZE (2*MI_SEGMENT_SLICE_SIZE) #define MI_COMMIT_MASK_BITS (MI_SEGMENT_SIZE / MI_COMMIT_SIZE) #define MI_COMMIT_MASK_FIELD_BITS MI_SIZE_BITS #define MI_COMMIT_MASK_FIELD_COUNT (MI_COMMIT_MASK_BITS / MI_COMMIT_MASK_FIELD_BITS) |