diff options
| author | Keith Bostic <keith@wiredtiger.com> | 2016-03-06 13:59:17 -0500 |
|---|---|---|
| committer | Keith Bostic <keith@wiredtiger.com> | 2016-03-06 13:59:17 -0500 |
| commit | 0d847085452e889a58b2a0c72cd821754406a101 (patch) | |
| tree | 56e1cc08698c49a2a9668880a9b958cb78914eda /src/btree | |
| parent | 2147fac6813949cf33b7e430db0c213736ee8d8a (diff) | |
| download | mongo-0d847085452e889a58b2a0c72cd821754406a101.tar.gz | |
WT-2391: De-prioritize eviction from indexes
Add a comment.
Diffstat (limited to 'src/btree')
| -rw-r--r-- | src/btree/bt_read.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/btree/bt_read.c b/src/btree/bt_read.c index 7cd2d9458df..3070716631f 100644 --- a/src/btree/bt_read.c +++ b/src/btree/bt_read.c @@ -486,6 +486,15 @@ __wt_page_in_func(WT_SESSION_IMPL *session, WT_REF *ref, uint32_t flags WT_RET(__wt_cache_eviction_check( session, 1, NULL)); WT_RET(__page_read(session, ref)); + + /* + * If configured to not trash the cache, leave the page + * generation unset, we'll set it before returning to + * the oldest read generation, so the page is forcibly + * evicted as soon as possible. We don't do that set + * here because we don't want to evict the page before + * we "acquire" it. + */ evict_soon = LF_ISSET(WT_READ_WONT_NEED) || F_ISSET(session, WT_SESSION_NO_CACHE); continue; |