diff options
Diffstat (limited to 'src/include/cache.h')
| -rw-r--r-- | src/include/cache.h | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/src/include/cache.h b/src/include/cache.h index 456cb0382e4..0a42853b95b 100644 --- a/src/include/cache.h +++ b/src/include/cache.h @@ -152,20 +152,28 @@ struct __wt_cache { #define WT_EVICT_SCORE_BUMP 10 #define WT_EVICT_SCORE_CUTOFF 10 #define WT_EVICT_SCORE_MAX 100 - uint32_t evict_aggressive_score;/* Score of how aggressive eviction - should be about selecting eviction - candidates. If eviction is - struggling to make progress, this - score rises (up to a maximum of - 100), at which point the cache is - "stuck" and transaction will be - rolled back. */ - uint32_t evict_empty_score; /* Score of how often LRU queues are - empty on refill. This score varies - between 0 (if the queue hasn't been - empty for a long time) and 100 (if - the queue has been empty the last 10 - times we filled up. */ + /* + * Score of how aggressive eviction should be about selecting eviction + * candidates. If eviction is struggling to make progress, this score + * rises (up to a maximum of 100), at which point the cache is "stuck" + * and transaction will be rolled back. + */ + uint32_t evict_aggressive_score; + + /* + * Score of how often LRU queues are empty on refill. This score varies + * between 0 (if the queue hasn't been empty for a long time) and 100 + * (if the queue has been empty the last 10 times we filled up. + */ + uint32_t evict_empty_score; + + /* + * Score of how much pressure storing historical versions is having on + * eviction. This score varies between 0, if reconciliation always + * sees updates that are globally visible and hence can be discarded, + * to 100 if no updates are globally visible. + */ + int32_t evict_lookaside_score; /* * Cache pool information. |