Marcus,
Do not use cocoon20b2 - this is really old beta release!
Switch to cocoon_20_branch - that's the RC Berin is talking about.
Vadim
> -----Original Message-----
> From: Marcus Crafter [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, August 22, 2001 6:58 PM
> To: [EMAIL PROTECTED]
> Subject: Re: LoadTest
>
>
> Hi Berin,
>
> Hope all is well mate. Thanks again for your advice. Please, don't be
> afraid to give out more! :-)
>
> On Wed, 22 Aug 2001, Berin Loritsch wrote:
>
> > Marcus Crafter wrote:
> > >
> > > We had a range of errors:
> > >
> > > o components not found: fixed recently in avalon's DefaultPool
> > > (also seems to have improved what was before a memory leak)
> >
> > I'm glad to see this is no longer a problem. Let me know if it rears
> > its ugly head again.
>
> Sure will. :-)
>
> > > o decreased performance over time (100 users lasts about 20 minutes,
> > > 50 users lasts about 40 minutes with our application, before
> > > performance drops)
> >
> > What is the load (beyond number of users: time between responses, type
> > of resource).
>
> The load actually changed with today's source code. Thanks to all that
> checked in changes today. Yesterday the load was less on our system
> (averaging between 3 and 6, for 50 and 100 users).
>
> With the changes from today (which have helped dramatically)
> the load is much higher, around 7-14 with the same user counts.
>
> Performance in general is actually much better than before, even though
> the machine seems to be under more load.
>
> > Probably should use the cocoon_2_0 branch (check the site for the proper
> > name).
> > That is what is being prepared for production readiness.
>
> Ok, we've switched over to the cocoon20b2 branch.
>
> > Cocoon.xconf provides attributes to allow you to manipulate
> > the size of Component pools for Poolable Components:
> >
> > pool-min // Minimum number of Components in the pool
> > pool-max // Maximum number of Components maintained in the pool
> > pool-grow // Number of Components to add to the pool each time we run
> > out.
> >
> > The Pool will basically turn into a Factory when the number of
> > Components in
> > the pool exceed pool-max. This is a performance drain.
>
> Ok. Excellent advice. :-)
>
> We pumped up our pool settings and saw an immediate improvement in
> general application performance, especially when testing directly with
> Tomcat (vs via a ajp13 connector).
>
> I've increased pooling settings on as much components as I can in our
> cocoon.xconf and sitemap.xmap files (min 32 to max 64 for 50
> simultaneous users).
>
> There are still several components which are regularly being
> decommissioned in the log files during our tests, that I cannot find
> locations where I can set pooling parameters for. These are:
>
> org.apache.cocoon.components.language.markup.xsp.XSPMarkupLanguage
> org.apache.avalon.excalibur.component.ExcaliburComponentSelector
>
> and all generated xsp classes, eg:
>
> org.apache.cocoon.www.client.common.mask.mask_xsp_xml
> (custom generated xsp class).
>
> Is it possible to set pooling sizes on these components too ?
>
> > Increase your pool sizes and cache sizes. If your JVM is not set to use
> > all 2 gig of RAM, then it will perform garbage collection more often.
>
> Yep. Have done already, we're running with mx1526 ms1024m, although I
> missed the MRU settings. I've increased the MRUMemory sizes today from
> 60m to 200m (for each event cache, stream cache, and the store).
>
> > > Runaway threads ? Could cause such a problem, but they wouldn't allow
> > > the system to regain itself - or should I not assume this ?
> >
> > I don't think this is a problem. You would see your CPU maxed out.
>
> I agree.
>
> > > Threading issues ? We've also seen cases in the log files under load
> > > where a single (same) request is handled by 4 separate threads, all
> > > starting in the same second - quite vexing.
> >
> > That _might_ be your Servlet Engine. The last time I ran my tests I
> > used Caucho's Resin. It is pretty decent, although it has some
> > synchronization issues of its own regarding archived files (i.e. jar files).
> > They are so severe that the entire JVM crashes.
>
> Ouch. Ok, I'll try everything with Resin as well, and also with
> Tomcat 4. BTW - Have you (or anyone else) experienced performance/load
> problems when using the apache connectors at all ?
>
> > > Our environment is a on a Sun Enterprise 250 (2x450mhz UltraII, 2gig
> > > ram), with Tomcat 3.2.3, CVS Cocoon2, and our reporting application
> > > (generates various html tables and pdf reports).
> >
> > That sounds very impressive. Can I have one? ;P
>
> Sure, we have 5 of them here :-)
>
> That's it so far. Thanks very much for your advice Berin, we'll
> continue to test here with the ideas you and others have laid out with
> the current codebase. As we do more testing I'll send in more
> information.
>
> Cheers,
>
> Marcus
>
>
> --
> .....
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