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| author | Michael Cahill <michael.cahill@mongodb.com> | 2016-09-14 12:18:30 +1000 |
|---|---|---|
| committer | Alex Gorrod <alexander.gorrod@mongodb.com> | 2016-09-14 12:18:30 +1000 |
| commit | 71c8bd736c888228d42d9a2ee478380d2224c984 (patch) | |
| tree | 90e8411a6ebe20ed447041c1b087f5708c490a1b /src/os_posix | |
| parent | 09f65fffa7375357264f55f75678540bb7ab5a08 (diff) | |
| download | mongo-71c8bd736c888228d42d9a2ee478380d2224c984.tar.gz | |
WT-2902 Track per-tree the efficiency of eviction walks. (#3036)
Some workloads create "deserts" within a tree where no good eviction
candidates can be found (e.g., zipfian distributions, append-only
workloads, etc.). Rather than walking all the way through such
regions, give up and try in the opposite direction next time.
Also add a statistic for the eviction empty score.
Diffstat (limited to 'src/os_posix')
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