diff options
Diffstat (limited to 'src/include/btree.i')
| -rw-r--r-- | src/include/btree.i | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/src/include/btree.i b/src/include/btree.i index 4c8166ca6a6..e0102a11511 100644 --- a/src/include/btree.i +++ b/src/include/btree.i @@ -1360,7 +1360,7 @@ __wt_page_hazard_check(WT_SESSION_IMPL *session, WT_PAGE *page) WT_CONNECTION_IMPL *conn; WT_HAZARD *hp; WT_SESSION_IMPL *s; - uint32_t i, hazard_size, session_cnt; + uint32_t i, j, hazard_size, max, session_cnt; conn = S2C(session); @@ -1372,15 +1372,28 @@ __wt_page_hazard_check(WT_SESSION_IMPL *session, WT_PAGE *page) * come or go, we'll check the slots for all of the sessions that could * have been active when we started our check. */ + WT_STAT_FAST_CONN_INCR(session, cache_hazard_checks); WT_ORDERED_READ(session_cnt, conn->session_cnt); - for (s = conn->sessions, i = 0; i < session_cnt; ++s, ++i) { + for (s = conn->sessions, i = 0, j = 0, max = 0; + i < session_cnt; ++s, ++i) { if (!s->active) continue; WT_ORDERED_READ(hazard_size, s->hazard_size); - for (hp = s->hazard; hp < s->hazard + hazard_size; ++hp) - if (hp->page == page) + if (s->hazard_size > max) { + max = s->hazard_size; + WT_STAT_FAST_CONN_SET(session, + cache_hazard_max, max); + } + for (hp = s->hazard; hp < s->hazard + hazard_size; ++hp) { + ++j; + if (hp->page == page) { + WT_STAT_FAST_CONN_INCRV(session, + cache_hazard_walks, j); return (hp); + } + } } + WT_STAT_FAST_CONN_INCRV(session, cache_hazard_walks, j); return (NULL); } |