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From Julian Löffelhardt <jul...@austria.fm>
Subject Re: reducing tomcat & jasper memory footprint
Date Mon, 30 Dec 2002 20:30:02 GMT
Hi,

I use jikes to compile the pages.
Since raising the JVM permanent segment size delays the error the problem
seems to come from the sheer size of the loaded class files.

So theorectically it shouldn't matter wheter the pages are precompiled or
not.

Anyway I 'm about to set up a test specifically for this, to measure how
many pages can be loaded before an error occurs.

llap,
julian



----- Original Message -----
From: "Jerome Lacoste (Frisurf)" <lacostej@frisurf.no>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Monday, December 30, 2002 8:51 PM
Subject: Re: reducing tomcat & jasper memory footprint


> Could this be also related to the leaks of the java compiler?
> Did you try to precompile the JSPs before deploying them (using JSPC) ?
> Perhaps does that help?
>
> Jerome
>
> On Mon, 2002-12-30 at 20:37, Julian Löffelhardt wrote:
> > Hi,
> >
> > I'm using Apache 1.3.26 and 3 tomcat 4.0.4 instances with AJP13 &
loadbalancing .
> > Our application is a CMS where all the published articles are generated
offline as JSP-Files, one jsp per article.
> >
> > We had hige problems with the memory footprint. Due to the fact that
every jsp is generated as a class and there are about 200 new artices per
day the permanent segment of the JVM heap gets filled with all the classes,
and I get an OutOfMemoryError.
> > My workaround for now is setting -XX:PermSize and --XX:MapPermSize to
higher values, but this just delays application hang-up.
> >
> > With 64 megs of permSize our Server had an approx. uptime of 1 day now
it's about 3-4 days.
> >
> > Is there any way to unload jsp-Files (unload the class) ?
> >
> > llap,
> > julian
> --
> Jerome Lacoste (Frisurf) <lacostej@frisurf.no>
> CoffeeBreaks
>
>
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