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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1607) String.intern() faster alternative
Date Wed, 29 Apr 2009 20:08:30 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12704306#action_12704306
] 

Yonik Seeley commented on LUCENE-1607:
--------------------------------------

The last patch removed the ability to plug a different implementation, but I guess we don't
need that until we have another implementation (and it's not clear if the benefits of dumping
String.intern() compatability in the future outweigh the disadvantages of breaking back compatibility).

I plan on committing this shortly.

> String.intern() faster alternative
> ----------------------------------
>
>                 Key: LUCENE-1607
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1607
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Earwin Burrfoot
>             Fix For: 2.9
>
>         Attachments: intern.patch, LUCENE-1607.patch, LUCENE-1607.patch, LUCENE-1607.patch,
LUCENE-1607.patch, LUCENE-1607.patch
>
>
> By using our own interned string pool on top of default, String.intern() can be greatly
optimized.
> On my setup (java 6) this alternative runs ~15.8x faster for already interned strings,
and ~2.2x faster for 'new String(interned)'
> For java 5 and 4 speedup is lower, but still considerable.

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