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From "Uwe Schindler (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3198) Change default Directory impl on 64bit linux to MMap
Date Mon, 13 Jun 2011 22:07:47 GMT


Uwe Schindler commented on LUCENE-3198:

Thats fine, I just wanted to talk about the whole issue what to enable when and bring together
all possible platform possibilities. In general we should per default only enable SimpleFSDirectory
on unknown platforms. Maybe NIO is heavily broken on OS XY (Android *lol*)?

> Change default Directory impl on 64bit linux to MMap
> ----------------------------------------------------
>                 Key: LUCENE-3198
>                 URL:
>             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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