[PATCH] Slight performance improvement for readVInt() of IndexInput
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Key: LUCENE-639
URL: http://issues.apache.org/jira/browse/LUCENE-639
Project: Lucene - Java
Issue Type: Improvement
Components: Index
Affects Versions: 2.0.0
Reporter: Johan Stuyts
Priority: Minor
Attachments: Lucene2ReadVIntPerformance.patch
By unrolling the loop in readVInt() I was able to get a slight, about 1.8 %,
performance improvement for this method. The test program invoked the method
over 17 million 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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