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From "Marco Spinetti" <m.spine...@pisa.iol.it>
Subject R: C1 performance (Paul)
Date Tue, 22 May 2001 07:22:16 GMT
Hi Paul,
I must create, to send my application in production, a well balanced and
resistant system.(load balacing problem). I am much interested in your
configuration, which seems excellent to me. The problem is that I do not
know how to create it: could you tell me how you have done?
Have you used Ajpv13?
How have you set up the Workers properties?
Thanx
Regards
Marco

----- Original Message -----
From: Paul Nock <pnock@medicineplanet.com>
To: <cocoon-users@xml.apache.org>
Sent: Monday, May 21, 2001 10:00 PM
Subject: RE: C1 performance


> -----Original Message-----
> From: Antonio Parolini [mailto:tony@employer.com.br]
> Sent: Monday, May 21, 2001 11:59 AM
> To: cocoon-users@xml.apache.org
> Subject: C1 performance
>
>
> Hi.
>
> I'm using cocoon 1.8.2 and I am now pretty much concerned by performance
> right now.
>
> My avarage pages response time is 0.6 seconde (about 70% XSLT
transformation
> and 30% database pooled access). I find this pretty slow since the site is
> going to have something like 400 crazy simultaneaous users clicking stuffs
> all over.
> :)
>
> >>>>
> >>>> If you're not using Saxon already, then my experience was this gave
a
> huge performance improvement.
> >>>>
> >>>> If your database is Oracle, then I also saw a big performance
> improvement using MTS SQLnet connections.
> >>>> The downside here though is that MTS seems to be pretty buggy on
Linux,
> at least before Oracle 8.1.7.
> >>>> Any benefit here though is going to be more dependent on your
> application architecture - most of
> >>>> mine was through the internal connection pooling of MTS, I think.
> >>>>
>
> My fair is that our linux/redhat 1GHz / 500Mo Ram production machine isn't
> going to make it...since every request use 100% of the precessor machine!
>
> >>>>
> >>>>  That sounds very high. Once my XSP is compiled, I only see a few %
> utilization, never 100%.
> >>>>
>
> Cache management is delicate... because most of our page informations are
> based on POSTed request parameters. But we will implement cache in some of
> the most requested pages.
>
> We plan to port the site later on Cocoon2. (when beta) Those Saxon
> asychronous response will probalby drop dramatically those 70%, but we
still
> need more.
>
> So I go two questions :
>
> 1) Where can I find info on loadbalancing tomcat/apache ? we need
> "statefull" load balancing (we have user session). Is this possible
without
> posting the user ID in links and forms ?
>
> >>>>>
> >>>>>  Well, no it's not really a Cocoon question, but I have my site
> configured using
> >>>>>  mod_jk loadbalancing across 4 JVM instances on a physical server
and
> then
> >>>>>  physical Foundry loadbalancing over 2 machines.  Once a session
is
> established,
> >>>>>  we tie that client to the same server and JVM using either cookies
or
> URL re-writing.
> >>>>>  Due to the limitations of the redirect rules on the loadbalancer
> though, I had to
> >>>>>  re-compile Tomcat to work with it.  Good job it's open source ;-)
> >>>>>  If you're going to have a lot of sessions, then probably the more
> JVMs you can run the
> >>>>>  better.
> >>>>>
>
> 2) What kind of web site load testing tools you guys use ?
>
> >>>>>  Jmeter
>
>
> Paul
>
>
> ---------------------------------------------------------------------
> Please check that your question has not already been answered in the
> FAQ before posting. <http://xml.apache.org/cocoon/faqs.html>
>
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