[xwiki-dev] Possible memory leak ?

[bey]

(Sorry for the mistakes in my last email)

Just for correction : -Xms512m (-Xmx521m) --> -Xmx512m

Possible values : 64 and 1024.

Best wishes
-------------
Youcef Bey

Vincent Massol a écrit :
>
> On Apr 5, 2007, at 7:50 PM, Youcef.Bey at imag.fr wrote:
>
>> Hi Arnaud,
>>
>> I faced this problem before.
>>
>> The importation of huge data need the configuration of java 
>> parameters of the
>> heap. I was not able to import and create 300000 documents - without 
>> object -
>> until I changed the following parameters :
>>
>>  -Xms512m -Xmx521m  (you could add or change them in startup.bat in 
>> windows or
>> catalina.sh on linux).
>>
>> These parameters depends on your machine. Then you can increase 
>> (-->1024) or
>> decrease them (1024).
>>
>> Hope this will solve your problem.
>
> if anyone has the time, it would be nice to use a profile to 
> understand why this is required...
>
> Thanks
> -Vincent
>
>> Quoting Arnaud Thimel <thimel at codelutin.com>:
>>
>>> Hi all,
>>>
>>> For a particular project, I have a plugin that reads data from an
>>> external database using some JDBC queries.
>>> For each row of my JDBC ResultSet, the plugin creates an XWiki 
>>> document,
>>> the associated objects, and fill these objects.
>>>
>>> All is running fine except that I have around 50.000 objects to 
>>> import :-D.
>>> Then I get a Java Heap Space exception.
>>>
>>> I re-re-re-re-re-read my source code, I don't keep any reference to the
>>> documents created.
>>> Every 200 document creation, I do the following calls :
>>>
>>>                     context.getWiki().flushCache();
>>>                     context.getWiki().getStore().cleanUp(context);
>>>                     System.gc();
>>>
>>> Anyway, the amount of memory used doesn't go down after flushing the 
>>> caches.
>>> And I still get my Heap Space exception.
>>>
>>> Does anybody has an idea for me ?
>>> Who thinks that I could be a XWiki memory leak ?
>>>
>>> Thanks,
>>>
>>> --Arnaud Thimel
>>> Société Code Lutin - http://www.codelutin.com
>>>
>>>
>>>
>>
>>
>>
>>
>> -------------------------------------------------
>> envoyé via Webmail/IMAG !
>>
>>
>>
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>
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-- 
Youcef Bey
Graduate School of Education
The University of Tokyo,
Mail address : bey at p.u-tokyo.ac.jp
Home page : http://panflute.p.u-tokyo.ac.jp/~bey/

On study leave GETALP team
GETALP, LIG Lab., IMAG-Campus, BP 53
385, rue de la bibliotheque
38041 Grenoble Cedex 9
France