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From "Ulrich Kaiser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CXF-4867) Extensive memory usage when reading from CRM 2011
Date Tue, 05 Mar 2013 09:49:12 GMT

    [ https://issues.apache.org/jira/browse/CXF-4867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13593267#comment-13593267
] 

Ulrich Kaiser commented on CXF-4867:
------------------------------------

Hi Aki,

unfortunately, I do not know how to get to the root objects you are speaking of, but I am
going to attach a screen-shot of the instance view that will hopefully tell you something
relevant.
Additionally I am adding a screen-shot with the first part of a livepath of a string in the
hope that it may be of interest to you.

Regarding the test program I think that it is already quite minimal (because it only reads
some records without doing anything with them) and the jars referenced in the manifest are
(with the exception of Notes.jar which is only needed by our log class) all standard jars
like cxf-2.7.3.jar. It may well be that the manifest references more jars than actually required,
but you would know better than I do which ones to leave out.
Please keep in mind that the program accesses an on-premise CRM via Kerberos, so I guess you
would have to have access to your own CRM to run the test program.

Thank you for your efforts!

Ulrich

                
> Extensive memory usage when reading from CRM 2011
> -------------------------------------------------
>
>                 Key: CXF-4867
>                 URL: https://issues.apache.org/jira/browse/CXF-4867
>             Project: CXF
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.7.3
>         Environment: Windows 7 Enterprise SP1, Java 1.6.0_37 (32 bit)
>            Reporter: Ulrich Kaiser
>         Attachments: Connection.txt, Instances.png, krb5.conf, LivePaths.png, login.conf,
Memory2.png, Prompt.png, TestCXF.zip, VisualVM.jpg
>
>
> Hi there!
> I have written a test program that reads entities from a Microsoft Dynamics CRM 2011
using CXF 2.7.3. The program was compiled and run as a runnable jar with Java 1.6.0_37 (32
bit).
> Now, when I run the program (in my case with the command line 'java.exe -Xmx1600m -jar
TestCXF.jar contact 2013-02-25') and look at the memory usage, I do not understand why it
needs so much memory (about 1.6 GB) for only 4 * 3099 records, even though the records are
minimal (no attributes). The consequence is that when I have to read more records (e. g. the
target CRM has more than 50'000 contacts), I will get an OutOfMemoryError.
> Furthermore, the test program finishes after four loops and releases its memory. The
actual productive program on the other hand is meant to run for hours, so it would be very
helpful to know how to free the memory, but calling System.gc() or re-connecting to the CRM
did not work.
> Do you perhaps have an explanation for this behavior and can you give me a hint how to
lower the memory usage?
> I have attached two screen-shots and a zip file with the runnable jar and the main source
files. If you need any further information please do not hesitate to send a mail.
> Thank you and kind regards
> Ulrich

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