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| author | Jason Evans <jasone@canonware.com> | 2017-03-08 22:42:57 -0800 |
|---|---|---|
| committer | Jason Evans <jasone@canonware.com> | 2017-03-15 13:13:47 -0700 |
| commit | 64e458f5cdd64f9b67cb495f177ef96bf3ce4e0e (patch) | |
| tree | d8b459159a8c1a9b73632945f6517e667d5b9c54 /src/large.c | |
| parent | 38a5bfc8169b018b5b71cc72daad14c3b2f5b206 (diff) | |
| download | platform_external_jemalloc_new-64e458f5cdd64f9b67cb495f177ef96bf3ce4e0e.tar.gz platform_external_jemalloc_new-64e458f5cdd64f9b67cb495f177ef96bf3ce4e0e.tar.bz2 platform_external_jemalloc_new-64e458f5cdd64f9b67cb495f177ef96bf3ce4e0e.zip | |
Implement two-phase decay-based purging.
Split decay-based purging into two phases, the first of which uses lazy
purging to convert dirty pages to "muzzy", and the second of which uses
forced purging, decommit, or unmapping to convert pages to clean or
destroy them altogether. Not all operating systems support lazy
purging, yet the application may provide extent hooks that implement
lazy purging, so care must be taken to dynamically omit the first phase
when necessary.
The mallctl interfaces change as follows:
- opt.decay_time --> opt.{dirty,muzzy}_decay_time
- arena.<i>.decay_time --> arena.<i>.{dirty,muzzy}_decay_time
- arenas.decay_time --> arenas.{dirty,muzzy}_decay_time
- stats.arenas.<i>.pdirty --> stats.arenas.<i>.p{dirty,muzzy}
- stats.arenas.<i>.{npurge,nmadvise,purged} -->
stats.arenas.<i>.{dirty,muzzy}_{npurge,nmadvise,purged}
This resolves #521.
Diffstat (limited to 'src/large.c')
| -rw-r--r-- | src/large.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/src/large.c b/src/large.c index 5145f418..c578995c 100644 --- a/src/large.c +++ b/src/large.c @@ -125,7 +125,7 @@ large_ralloc_no_move_shrink(tsdn_t *tsdn, extent_t *extent, size_t usize) { extent_usize_get(trail)); } - arena_extent_cache_dalloc(tsdn, arena, &extent_hooks, trail); + arena_extents_dirty_dalloc(tsdn, arena, &extent_hooks, trail); } arena_extent_ralloc_large_shrink(tsdn, arena, extent, oldusize); @@ -158,9 +158,16 @@ large_ralloc_no_move_expand(tsdn_t *tsdn, extent_t *extent, size_t usize, bool commit = true; extent_t *trail; bool new_mapping; - if ((trail = extent_alloc_cache(tsdn, arena, &extent_hooks, - extent_past_get(extent), trailsize, 0, CACHELINE, &is_zeroed_trail, - &commit, false)) == NULL) { + if ((trail = extents_alloc(tsdn, arena, &extent_hooks, + &arena->extents_dirty, extent_past_get(extent), trailsize, 0, + CACHELINE, &is_zeroed_trail, &commit, false)) != NULL + || (trail = extents_alloc(tsdn, arena, &extent_hooks, + &arena->extents_muzzy, extent_past_get(extent), trailsize, 0, + CACHELINE, &is_zeroed_trail, &commit, false)) != NULL) { + if (config_stats) { + new_mapping = false; + } + } else { if ((trail = extent_alloc_wrapper(tsdn, arena, &extent_hooks, extent_past_get(extent), trailsize, 0, CACHELINE, &is_zeroed_trail, &commit, false)) == NULL) { @@ -169,10 +176,6 @@ large_ralloc_no_move_expand(tsdn_t *tsdn, extent_t *extent, size_t usize, if (config_stats) { new_mapping = true; } - } else { - if (config_stats) { - new_mapping = false; - } } if (extent_merge_wrapper(tsdn, arena, &extent_hooks, extent, trail)) { @@ -327,7 +330,7 @@ large_dalloc_prep_impl(tsdn_t *tsdn, arena_t *arena, extent_t *extent, static void large_dalloc_finish_impl(tsdn_t *tsdn, arena_t *arena, extent_t *extent) { extent_hooks_t *extent_hooks = EXTENT_HOOKS_INITIALIZER; - arena_extent_cache_dalloc(tsdn, arena, &extent_hooks, extent); + arena_extents_dirty_dalloc(tsdn, arena, &extent_hooks, extent); } void |