So you're seeing this in your production environment, not only when
you hot redeploy from Eclipse?
Martin
On Mon, 24 Jul 2006 03:50:17 +0200, Harvey, David
<[EMAIL PROTECTED]> wrote:
> Thanks for your comments, discussion. However, this occurs when
caching
> is turned on, i.e.
> -Dorg.apache.tapestry.disable-caching=false.
>
> I sure hope there's a fix, I don't know if MaxPermSize can be made
> any larger in production and it sounds from your discussion that
> making it larger will just delay the OOM condition anyway.
>
> Anybody else have any ideas?
>
> -----Original Message-----
> From: James Carman [mailto:[EMAIL PROTECTED]
> Sent: Sunday, July 23, 2006 6:03 AM
> To: Tapestry users
> Subject: Re: PermGen space
>
> Actually, Tapestry (and HiveMind as well) uses Javassist to
> generate classes at runtime, but all the rest is still true with
> Javassist as
it
> is with CGLIB (hibernate uses CGLIB). As Martin said, enabling
caching
> should fix the problem. Tapestry will only generate (and cache)
> the classes for each page/component one time with caching enabled.
> In a production environment, you really shouldn't run into this,
> since you would have caching enabled and you wouldn't be hot
> redeploying your application.
>
> James
>
>> Hi all,
>> This problem is very common with Tapestry applications. This is
>> due
to
>> the fact that Tapestry uses cglib to generate classes at runtime.
>> Java uses a separate Heap space called "PermGenSpace" to put
meta-data
>> about classes, which is never garbage collected (this is "normal"
>> since normally, classes never change...) but with cglib, classes
>> are generated, which add to the PermGenSpace. And the next time
>> your application is deployed, new classes are generated which add
>> to the PermGenSpace, etc... So it fills and become full.
>> So this problem is common to Java+Tapestry/cglib+deployed webapps.
>> I hope this explaination is clear. Else ask questions.
>> -jec
>>
>> Harvey, David a écrit :
>>> Hello all,
>>>
>>> We've been having occasional problems with PermGen out of space
>>> errors thrown during the execution of our Tapestry application.
>>> We usually get a stack trace with something about hivemind at the
>>> top (see below).
>>> Then, of course, we have to restart our app server. Our
>>> environment is
>>>
>>> Tapestry 4.0.1 and Tacos4-Beta3
>>> Jboss 4.0.3 sp1 (Tomcat 5.5 embedded) JRE 1.5.0_03
>>>
>>> The java runtime is initialized with -XX:PermSize=96M
>>> -XX:MaxPermSize=128M
>>>
>>> The stack trace we get at various times is:
>>>
>>> 2006-07-20 17:25:11,415 ERROR
>>> [net.sf.tacos.ajax.impl.AjaxDirectServiceImpl] Error invoking
>>> listener on component $AjaxForm_40
>>> org.apache.hivemind.ApplicationRuntimeException: PermGen space
>>> [context:/WEB-INF/pages/claims/addEdit.page, line 6, column 93]
>>> at
>>>
org.apache.tapestry.engine.RequestCycle.rewindForm(RequestCycle.java:
>>> 461
>>> )
>>> at
>>> net.sf.tacos.ajax.components.AjaxForm.trigger(AjaxForm.java:418)
>>> at
>>>
net.sf.tacos.ajax.impl.AjaxDirectServiceImpl.triggerComponent(AjaxDir
>>> ect
>>> ServiceImpl.java:348)
>>> .
>>> .
>>> .
>>>
>>> Caused by: java.lang.OutOfMemoryError: PermGen space
>>>
>>>
>>> Anybody have any clues as to what we can do about this?
>>>
>>> Regards,
>>> David Harvey
>>> Ingenix, Inc.
>>>
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>
>
> James Carman, President
> Carman Consulting, Inc.
>
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