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From James Thornley <jamnshe...@yahoo.com>
Subject Re: Tomcat robustness and scalability
Date Thu, 31 Jan 2002 16:50:05 GMT
Panic over,

I've discovered the EmbeddedCatalinaServiceSX mbean
which initialises the catalina instance takes a
parameter of MaxProcessors, and if you don't give it
it defaults to 20.

Sorry for wasting your time

James Thornley

--- James Thornley <jamnshelly@yahoo.com> wrote:
> Hi,
> 
> I'm doing an assessment for a company to replace
> weblogic with tomcat/jboss. I've managed to get an
> installation using the jboss/tomcat bundle and am
> currently comparing it to the weblogic installaion.
> 
> The good news is that (using jmeter), if I fire a
> repetative single requests at both installations the
> tomcat/jboss is as good as weblogic (it's actually
> slightly faster)
> 
> If however, I set up 20 threads that fire the same
> request simultaneously, weblogic breezes on (with a
> slightly slower response time), but the Tomcat/Jboss
> installation falls over. This is the error
> 
> 
> [INFO,EmbeddedCatalinaServiceSX] HttpConnector[8080]
> No processor available, rejecting this connection
> 
> 
> It does start up 19 new threads, but eventually
> decides it can't start any more, at that point it
> refuses to receive any more connections.
> 
> I am using the jboss/tomcat config files and cant
> find
> any references to the maxProcessors parameter, so I
> assume it is set to the default of 75.
> 
> The process is running on a solaris box, and
> connecting to Oracle.
> 
> I would gratefully accept any comments on this as I
> strongly desire recommending the jboss/tomcat
> installation, but obviously can not do it if it
> compromises the stability of the site.
> 
> Cheers
> 
> James Thornley
> 
> 
> __________________________________________________
> Do You Yahoo!?
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> http://auctions.yahoo.com
> 


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