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Add a per-arena oversize_threshold.

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This can let manual arenas trade off memory and CPU the way auto arenas do.
This commit is contained in:
David Goldblatt
2020-11-11 13:34:43 -08:00
committed by David Goldblatt
parent 4ca3d91e96
commit cf2549a149
10 changed files with 194 additions and 12 deletions
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7
src/pac.c
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@@ -37,8 +37,9 @@ pac_decay_data_get(pac_t *pac, extent_state_t state,
bool
pac_init(tsdn_t *tsdn, pac_t *pac, base_t *base, emap_t *emap,
edata_cache_t *edata_cache, nstime_t *cur_time, ssize_t dirty_decay_ms,
ssize_t muzzy_decay_ms, pac_stats_t *pac_stats, malloc_mutex_t *stats_mtx) {
edata_cache_t *edata_cache, nstime_t *cur_time, size_t oversize_threshold,
ssize_t dirty_decay_ms, ssize_t muzzy_decay_ms, pac_stats_t *pac_stats,
malloc_mutex_t *stats_mtx) {
unsigned ind = base_ind_get(base);
/*
* Delay coalescing for dirty extents despite the disruptive effect on
@@ -73,6 +74,8 @@ pac_init(tsdn_t *tsdn, pac_t *pac, base_t *base, emap_t *emap,
WITNESS_RANK_EXTENT_GROW, malloc_mutex_rank_exclusive)) {
return true;
}
atomic_store_zu(&pac->oversize_threshold, oversize_threshold,
ATOMIC_RELAXED);
if (decay_init(&pac->decay_dirty, cur_time, dirty_decay_ms)) {
return true;
}