[PATCH] Performance improvement for doNext() of ConjunctionScorer
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Key: LUCENE-640
URL: http://issues.apache.org/jira/browse/LUCENE-640
Project: Lucene - Java
Issue Type: Improvement
Components: Search
Affects Versions: 2.0.0
Reporter: Johan Stuyts
Attachments: Lucene2ConjunctionScorerDoNextPerformance.patch
I was able to improve the performance of 'doNext() of 'ConjunctionScorer' by
over 20% by storing the result of some calls that were performed multiple times
in local variables. The test program invoked the method over 400,000 times on
each run.
I ran the performance tests on:
- Windows XP Pro SP2
- Sun JDK 1.5.0_07
- YourKit 5.5.4
- Lucene trunk
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