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From "Kim Haase (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4807) analyze performance slow-down of suites.All/derbyall combo between Windows XP and Windows 2003 and Windows 2008.
Date Mon, 20 Sep 2010 18:58:33 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12912643#action_12912643
] 

Kim Haase commented on DERBY-4807:
----------------------------------

I have no idea whether this is related, but there's a thread currently on the glassfish-dev
mailing list about slow builds on Windows with JDK 6. Ludovic Champenois says, 

"Do not use Windows to build big apps with Maven...
The Windows JDK has a huge performance bug with javac using long classpath (and building GlassFish
is impacted with this bug...)
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6843751
No traction from the JDK folks so far, so please give up on Windows and move to something
better to be more effective." 

> analyze performance slow-down of suites.All/derbyall combo between Windows XP and Windows
2003 and Windows 2008.
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4807
>                 URL: https://issues.apache.org/jira/browse/DERBY-4807
>             Project: Derby
>          Issue Type: Task
>          Components: Test
>    Affects Versions: 10.6.2.0, 10.6.2.1
>         Environment: Windows XP, Windows 2003, Windows 2008, IBM JVM 1.6 (SR8), 1.5 (SR11)
and weme 6.2
>            Reporter: Myrna van Lunteren
>            Assignee: Myrna van Lunteren
>
> Setting up automated nightly test runs has been troublesome for 10.6 on windows because
the set of tests (derbyall/suitesall with 3 different jvms) that completed within a day on
a machine with similar hardware but running XP did not complete within a day on a machine
running Windows 2008.
> Switching to a machine with windows 2003 appeared to improve matters. Switching to a
machine with XP, and the test finished.
> Initially, my focus has been to try to get the tests to run consistently, now I will
be analyzing this further.
> I now have a separate machine that has the 3 OSs loaded on it, and will experiment, and
gather data, using the 10.6.2 jars so the only difference is the OS.

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