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https://issues.apache.org/jira/browse/LUCENE-1796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741564#action_12741564
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Robert Muir commented on LUCENE-1796:
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I just want to say I think that 10% test case might be a worst case: very short
documents and no reusableTS.
I ran a bunch of iterations on a corpus (regular sized docs though) and found
this:
Lucene 2.4.1 (CzechAnalyzer, does not implement reusableTS) avg 48290.4ms
HEAD+LUCENE-1796 (CzechAnalyzer, does not implement reusableTS) avg 49943.8ms
<-- a bit slower
HEAD+LUCENE-1796+LUCENE-1794 (CzechAnalyzer, implements reusableTS) avg
47846.1ms <-- a bit faster
So I think reusableTS in Solr combined with this patch can mitigate any
remaining construction overhead, and maybe be faster overall compared to the
last release.
> Speed up repeated TokenStream init
> ----------------------------------
>
> Key: LUCENE-1796
> URL: https://issues.apache.org/jira/browse/LUCENE-1796
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Mark Miller
> Assignee: Uwe Schindler
> Fix For: 2.9
>
> Attachments: after.png, afterAndLucene1796.png, before.png,
> LUCENE-1796.patch, LUCENE-1796.patch, LUCENE-1796.patch, LUCENE-1796.patch,
> LUCENE-1796.patch
>
>
> by caching isMethodOverridden results
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