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From "Marinko, Jeff" <Jeff_Mari...@intuit.com>
Subject RE: Configuration for High TPS
Date Fri, 09 Aug 2002 18:34:00 GMT
I plan to do pre-caching later.  Currently my "first" test run is the
unlucky user, which I'm calling a "cold start" and seeing how well it
performs from a clear cache.

No, I'm running TC stand-alone currently.  Running it with Apache will
improve performance? I'll look into it, but for now I'm running stand-alone.

-----Original Message-----
From: Durham David Cntr 805CSS/SCBE [mailto:David.Durham1@scott.af.mil]
Sent: Friday, August 09, 2002 11:32 AM
To: Tomcat Users List
Subject: RE: Configuration for High TPS


Have you integrated Tomcat with another webserver for the static content,
assuming you have some.  That would more than likely improve performance.

> -----Original Message-----
> From: Turner, John [mailto:JTurner@AAS.com]
> Sent: Friday, August 09, 2002 12:52 PM
> To: 'Tomcat Users List'
> Subject: RE: Configuration for High TPS
> 
> 
> 
> http://jakarta.apache.org/tomcat/tomcat-4.1-doc/config/coyote.html
> 
> John Turner
> jturner@NOSPAM.aas.com
> 
> 
> -----Original Message-----
> From: Marinko, Jeff [mailto:Jeff_Marinko@intuit.com]
> Sent: Friday, August 09, 2002 1:50 PM
> To: 'Tomcat Users List'
> Subject: RE: Configuration for High TPS
> 
> 
> Where can I find documentation on the Coyote connector (such 
> as the exact
> class name)?
> 
> What is really bothering me (currently), is once I start 
> getting connection
> errors, my CPU usage (roughly) doubles, and I get connection 
> errors much
> more easily (as if acceptCount was reduced somehow).  Any ideas on the
> cause/solution for this?
> 
> -----Original Message-----
> From: Sullivan, Mark E [mailto:Mark.Sullivan@nav-international.com]
> Sent: Friday, August 09, 2002 10:31 AM
> To: 'Tomcat Users List'
> Subject: RE: Configuration for High TPS
> 
> 
> what version of tomcat are you running? In the 4+ versions 
> the Coyote HTTP
> connector is supposed to perform better. 
> 
> > -----Original Message-----
> > From: Marinko, Jeff [mailto:Jeff_Marinko@intuit.com]
> > Sent: Friday, August 09, 2002 12:23 PM
> > To: Tomcat Users List
> > Subject: Configuration for High TPS
> > 
> > 
> > I'm attempting to configure Tomcat for a test environment to 
> > handle a high
> > number of transactions per second (TPS) and would like any 
> > advice others may
> > like to contribute.  The machine is a fairly powerful dual 
> > processor machine
> > (1+ GHz) running WinNT.  I'm using a tool to send requests, 
> > where I can
> > specify the TPS and number of requests total to send.
> > 
> > I'm running the following with "ok" results, but I'm 
> interested in any
> > suggestions or better explanations of some of the fields:
> > 
> > <Connector 
> > className="org.apache.catalina.connector.http.HttpConnector"
> >                port="8080" minProcessors="200" maxProcessors="200"
> >                enableLookups="true" redirectPort="8443"
> >                acceptCount="2000" debug="0" 
> > connectionTimeout="60000"/>
> > 
> > Perhaps my biggest problem is the number of connections 
> > Tomcat accepts fills
> > up rather quickly, some of the connections my tool generates 
> > are refused
> > (presumably due to the acceptCount limit being reached, and I 
> > have increased
> > it a couple times).
> > 
> > Any advice would be appreciated!
> > 
> > Jeff
> > 
> > 
> > --
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