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From: "Christofer Dutz" <dutz@c-ware.de>
To: <users@cocoon.apache.org>,
	<rgoers@apache.org>
Subject: AW: AW: Memoryleaks in Cocoon 2.1.7?
Date: Sat, 11 Mar 2006 10:10:17 +0100
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Yes

-----Urspr=FCngliche Nachricht-----
Von: Ralph Goers [mailto:Ralph.Goers@dslextreme.com]=20
Gesendet: Samstag, 11. M=E4rz 2006 05:16
An: users@cocoon.apache.org
Betreff: Re: AW: Memoryleaks in Cocoon 2.1.7?

Were you using Java 5?

Christofer Dutz wrote:
>
> Well it seems that I was able to get rid of the nasty memory leaks.
>
> The problem is, that they weren't real memory leaks after all. I=20
> noticed that if I pressed the "GC" button in the JConsole tool, that=20
> all unnecessary Memory was freed. As far as could find out, this is a=20
> problem with the default garbage collection method used to free=20
> memory. This uses a fast but inaccurate way to free unused memory=20
> blocks. I could have started testing out different GC settings, but I=20
> simply witched to a JRockit VM and all my memory problems were solved. =

> After doing some performance evaluations at my university I knew that=20
> JRockit seems to handle its memory a lot more efficient than the Sun=20
> VM (both with default GC setting), so I didn't bother testing the=20
> settings of the Sun VM. Maybe someone on this list has some hints to=20
> getting the Sun VM to clean up its memory better.
>
> Hope this helps anyone.
>
> Chris
>
> =
------------------------------------------------------------------------
>
> *Von:* Simone Gianni [mailto:s.gianni@thebug.it]
> *Gesendet:* Donnerstag, 2. M=E4rz 2006 13:14
> *An:* users@cocoon.apache.org
> *Betreff:* Re: Memoryleaks in Cocoon 2.1.7?
>
> Just for the records, i'm currently experiencing some out of memory=20
> errors on a cocoon 2.1.8 using common blocks + forms + fop on two=20
> machines (a developer machine running windows, and a gentoo server),=20
> while with the same cocoon version and same application it does not=20
> happen on other machines (ranging from ubuntu and gentoo developers=20
> machines, and an ubuntu server). So I thought it was a platform=20
> problem, not directly related with cocoon (so didn't even tried a=20
> profiled run), but since the thread is open and i have two machines=20
> showing random out of memory, let me know if i can check something to=20
> make it clearer.
>
> Simone
>
> Tomasz Nowak wrote:
>
> U=BFytkownik <Christofer.Dutz@partner.commerzbank.com>
<mailto:Christofer.Dutz@partner.commerzbank.com> wrote:
>  =20
>> I have read your posts. The problem seems to be a different one.
>> =20
>> We increased the memory assigned to tomcat and cocoon and =
successfully
>> increased the time between OutOfMemory errors. With 2GB of Memory the
>> application runs stable for about one week. I am now looking for the
>> leak itself and as I can see in the jconsole there is deffinitively a
>> leak. If I cant get a tip here, my next step is to setup a profiler
>> and run jmeter stresstests untill I find the bug. Hopefully it is no
>> "big-one" in cocoon itself.
>>    =20
> =20
> I would be VERY THANKFULL if you let me know if you find that leak.
> =20
>  =20
>
> --=20
> Simone Gianni
>

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