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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3198) Change default Directory impl on 64bit linux to MMap
Date Mon, 13 Jun 2011 21:55:47 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13048812#comment-13048812
] 

Uwe Schindler commented on LUCENE-3198:
---------------------------------------

That means we can now enable MMap for all 64 bit platforms? Solaris, windows, Linux - any
others except FreeBSD? FreeBSD needs to be checked, but I assume its also faster there. We
can check on lucene.zones maybe.

> Change default Directory impl on 64bit linux to MMap
> ----------------------------------------------------
>
>                 Key: LUCENE-3198
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3198
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/store
>            Reporter: Michael McCandless
>             Fix For: 3.3, 4.0
>
>
> Consistently in my NRT testing on Fedora 13 Linux, 64 bit JVM (Oracle 1.6.0_21) I see
MMapDir getting better search and merge performance when compared to NIOFSDir.
> I think we should fix the default.

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