Thanks Nico,
But i´m surprised because the other transient objects we have in
ActionForm (for example, a Category of log4j) aren´t showed by JProbe, but
attribute servlet is showed and computed for memory. however our own
transient attributes aren´t showed.
May this be somethnig related to 9iAS more than related to Struts?
Thanks!
> -----Mensaje original-----
> De: Nicolas De Loof [mailto:[EMAIL PROTECTED]
> Enviado el: miércoles, 28 de enero de 2004 15:13
> Para: Struts Users Mailing List
> Asunto: Re: Problem with huge session memory and ActionForm
>
>
> ActionForm has this attribute :
> protected transient ActionServlet servlet
>
> All ActionForms share the same ActionServlet instance. As
> this attribute is transient, it will not be serialized if form
> is put in session (and session itself is serialized).
>
> So I think the "session size" is not well computed by JPRobe
> profiler, as every referenced objet are included in size
> computation, even if they're shared between objects or
> declared transient.
>
> A better way sould be to run the app without any session
> created, get JVM memory usage (mem1), then open N user
> sessions, and get JVM memory usage (mem2). (mem2 - mem1) / N
> is *real* session size.
>
> Nico.
>
>
>
> Why not change those forms to request scope instead?Where
> ever feasible I mean.If any data is not shared across pages in
> a wizard like flow, just put that form in request.This should
> be applicable to 90% of the cases.
>
> But It may not be as simple as that.You may have to retest
> entire application because of that.
>
> HTH.
> regards,
> Shirish
>
> -----Original Message-----
> From: Jose Ramon Diaz [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, January 28, 2004 1:48 PM
> To: 'Struts Users Mailing List'
> Subject: Problem with huge session memory and ActionForm
>
>
>
> Hi all,
>
> We have detected a problem with the amount of memory we use
> in the session
> when we use classes extending org.apache.struts.action.ActionForm and
> DynaActionForm too.
> We are using 9iAS 9.0.3.
> We take a look to the memory using JPRobe profiler, and we
> see that the
> forms stored in session (we define the scope to session in
> struts-config.xml
> for an action) are using more than 20Mb(!!)
> Those actionForms have a reference to ActionServlet in
> servlet attribute.
>
> Of course, this is a lot of memory to have several hundreds
> of users. I
> imagine this is not a Struts bug, and please help us to detect what´s
> happening or which is the error in our code.
>
> Thanks a lot.
>
> Jose R.
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