lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Robert Muir (JIRA)" <>
Subject [jira] Created: (LUCENE-2650) improve windows defaults in FSDirectory
Date Fri, 17 Sep 2010 17:52:37 GMT
improve windows defaults in FSDirectory

                 Key: LUCENE-2650
             Project: Lucene - Java
          Issue Type: Improvement
          Components: Store
    Affects Versions: 4.0
            Reporter: Robert Muir
            Assignee: Robert Muir
             Fix For: 4.0

Currently windows defaults to SimpleFSDirectory, but this is a problem due to the synchronization.

I have been benchmarking queries *sequentially* and was pretty surprised at how much faster
MMapDirectory is, for example for cases that do many seeks.

I think we should change the defaults for windows as such:

if (WINDOWS and UNMAP_SUPPORTED and 64-bit)
  use MMapDirectory
  use SimpleFSDirectory 

I think we should just consider doing this for 4.0 only and see how it goes.

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message