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Posted to derby-dev@db.apache.org by "Kathey Marsden (JIRA)" <ji...@apache.org> on 2009/03/02 17:26:56 UTC

[jira] Commented: (DERBY-262) Use Java 1.5 NIO for improved performance

    [ https://issues.apache.org/jira/browse/DERBY-262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12678031#action_12678031 ] 

Kathey Marsden commented on DERBY-262:
--------------------------------------

There was some discussion on this topic in the following thread on derby-user.
http://www.nabble.com/Derby-speedup-by-not-using-page-caches--tt22268815.html


> Use Java 1.5 NIO for improved performance
> -----------------------------------------
>
>                 Key: DERBY-262
>                 URL: https://issues.apache.org/jira/browse/DERBY-262
>             Project: Derby
>          Issue Type: Wish
>          Components: Performance
>            Reporter: Eric Solberg
>
> Are there plans to take advantage of JDK 1.5 NIO in Derby?  This should give a substantial performance benefit.  In a simple test, processing extremely large PDF files (80+MB) into individual pages, I saw 3x-4x performance improvement using memory mapped files.  This was without doing anything 'smart' to squeeze out even more performance.  

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