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Posted to dev@lucene.apache.org by "Paul Elschot (JIRA)" <ji...@apache.org> on 2014/01/24 23:13:38 UTC

[jira] [Created] (LUCENE-5416) Performance of a FixedBitSet variant that uses Long.numberOfTrailingZeros()

Paul Elschot created LUCENE-5416:
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             Summary: Performance of a FixedBitSet variant that uses Long.numberOfTrailingZeros()
                 Key: LUCENE-5416
                 URL: https://issues.apache.org/jira/browse/LUCENE-5416
             Project: Lucene - Core
          Issue Type: Bug
          Components: core/search
    Affects Versions: 5.0
            Reporter: Paul Elschot
            Priority: Minor
             Fix For: 5.0


On my machine the current byte index used in OpenBitSetIterator is slower than Long.numberOfTrailingZeros() for advance().
The pull request contains the code for benchmarking this taken from an early stage of DocBlocksIterator.
In case the benchmark shows improvements on more machines, well, we know what to do...



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