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https://issues.apache.org/jira/browse/LUCENE-5416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Elschot resolved LUCENE-5416.
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Resolution: Done
See measurements and patch with Long.numberOfTrailingZeros at LUCENE-5425.
> 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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