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From "Myrna van Lunteren (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4807) analyze performance slow-down of suites.All/derbyall combo between Windows XP and Windows 2003 and Windows 2008.
Date Tue, 07 Dec 2010 23:07:01 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Myrna van Lunteren updated DERBY-4807:

    Attachment: analysis_suitesall.xls

Attaching a spreadsheet that sets out the various test fixtures of the manual run (starting
the java class directly (i.e.. junit.textui.TestRunner) from a window) vs. my script run (starting
the test run(s) for a number of jvms a scheduled task that kicks off a java program that kicks
of a script that kicks off junit.textui.TestRunner suites.All). Only showing the times for
the ibm 1.6 test runs. The numbers are the duration in milliseconds reported by -Dderby.tests.trace=true

Looking at the data so far, it seems less likely there's a derby bug here. 
Still looking into it further. I'll try to use one test next, and I picked functionTests.tests.memory.TriggerTest
(has fixtures that start with 'test5'; they're taking more than a couple of miliseconds, so
not too quick, and they were considerably slower in the 2003 and 2008 runs.)

Some other interesting (?) details:
- the testLDAPConnection fixtures took a great deal more time during the windows 2003 and
2008 runs.
- the stress multi test took about the same time during each run.

> 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:
>         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
>         Attachments: analysis_suitesall.xls
> 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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