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| author | Jason Evans <jasone@canonware.com> | 2017-02-13 07:18:57 (GMT) |
|---|---|---|
| committer | Jason Evans <jasone@canonware.com> | 2017-02-17 04:11:50 (GMT) |
| commit | 2dfc5b5aac983f8f192c63c604a59fed8b39e937 (patch) | |
| tree | a948df54499ede315bf482a5dddb0bbf9dc524d3 /include/jemalloc | |
| parent | c1ebfaa673f769eff399fc5806591b3a4782a9c5 (diff) | |
| download | jemalloc-2dfc5b5aac983f8f192c63c604a59fed8b39e937.zip jemalloc-2dfc5b5aac983f8f192c63c604a59fed8b39e937.tar.gz jemalloc-2dfc5b5aac983f8f192c63c604a59fed8b39e937.tar.bz2 | |
Disable coalescing of cached extents.
Extent splitting and coalescing is a major component of large allocation
overhead, and disabling coalescing of cached extents provides a simple
and effective hysteresis mechanism. Once two-phase purging is
implemented, it will probably make sense to leave coalescing disabled
for the first phase, but coalesce during the second phase.
Diffstat (limited to 'include/jemalloc')
| -rw-r--r-- | include/jemalloc/internal/extent_externs.h | 3 | ||||
| -rw-r--r-- | include/jemalloc/internal/extent_structs.h | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/include/jemalloc/internal/extent_externs.h b/include/jemalloc/internal/extent_externs.h index a355611..d971ec3 100644 --- a/include/jemalloc/internal/extent_externs.h +++ b/include/jemalloc/internal/extent_externs.h @@ -21,7 +21,8 @@ size_t extent_size_quantize_ceil(size_t size); ph_proto(, extent_heap_, extent_heap_t, extent_t) -bool extents_init(tsdn_t *tsdn, extents_t *extents, extent_state_t state); +bool extents_init(tsdn_t *tsdn, extents_t *extents, extent_state_t state, + bool try_coalesce); extent_state_t extents_state_get(const extents_t *extents); size_t extents_npages_get(extents_t *extents); extent_t *extents_evict(tsdn_t *tsdn, extents_t *extents, size_t npages_min); diff --git a/include/jemalloc/internal/extent_structs.h b/include/jemalloc/internal/extent_structs.h index 33ca4ac..008b635 100644 --- a/include/jemalloc/internal/extent_structs.h +++ b/include/jemalloc/internal/extent_structs.h @@ -115,6 +115,9 @@ struct extents_s { /* All stored extents must be in the same state. */ extent_state_t state; + + /* If true, try to coalesce during extent deallocation. */ + bool try_coalesce; }; #endif /* JEMALLOC_INTERNAL_EXTENT_STRUCTS_H */ |