diff options
Diffstat (limited to 'src/evict/evict_lru.c')
| -rw-r--r-- | src/evict/evict_lru.c | 26 |
1 files changed, 8 insertions, 18 deletions
diff --git a/src/evict/evict_lru.c b/src/evict/evict_lru.c index cc3c5a5c824..fdf68841b85 100644 --- a/src/evict/evict_lru.c +++ b/src/evict/evict_lru.c @@ -1647,26 +1647,16 @@ __evict_walk_file(WT_SESSION_IMPL *session, QUEUE_FILLS_PER_PASS; /* - * Randomly walk trees with a small fraction of the cache in case there - * are so many trees that none of them use enough of the cache to be - * allocated slots. - * - * The chance of walking a tree is equal to the chance that a random - * byte in cache belongs to the tree, weighted by how many times we - * want to fill queues during a pass through all the trees in cache. + * Walk trees with a small fraction of the cache in case there are so + * many trees that none of them use enough of the cache to be allocated + * slots. Only skip a tree if it has no bytes of interest. */ if (target_pages == 0) { - if (F_ISSET(cache, WT_CACHE_EVICT_CLEAN)) { - btree_inuse = __wt_btree_bytes_evictable(session); - cache_inuse = __wt_cache_bytes_inuse(cache); - } else { - btree_inuse = __wt_btree_dirty_leaf_inuse(session); - cache_inuse = __wt_cache_dirty_leaf_inuse(cache); - } - if (btree_inuse == 0 || cache_inuse == 0) - return (0); - if (__wt_random64(&session->rnd) % cache_inuse > - btree_inuse * QUEUE_FILLS_PER_PASS) + btree_inuse = F_ISSET(cache, WT_CACHE_EVICT_CLEAN) ? + __wt_btree_bytes_evictable(session) : + __wt_btree_dirty_leaf_inuse(session); + + if (btree_inuse == 0) return (0); } |