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From "Bovy, Stephen J" <STEPHEN.B...@ca.com>
Subject RE: Limiting the number of threads Tomcat 4.1 creates
Date Mon, 03 Oct 2005 16:30:10 GMT
set sparethreads  


Stephen Bovy
Computer Associates
6100 Center Drive
Suite 700
Los Angeles, CA 90045
Tel: (310) 957-3930
Fax: (310) 957-3917
e-mail: Stephen.Bovy@ca.com
-----Original Message-----
From: Rob Shields [mailto:rshields@messagelabs.com] 
Sent: Friday, September 30, 2005 2:31 PM
To: Tomcat Users List
Subject: RE: Limiting the number of threads Tomcat 4.1 creates

Hi Chuck,

On Fri, 2005-09-30 at 16:08 -0500, Caldarale, Charles R wrote:
<snip>
> > Is there a way to limit the number of threads that Tomcat 4.1 
> > creates in its thread pool?
> 
> Reading the doc never hurts:
> http://jakarta.apache.org/tomcat/tomcat-4.1-doc/config/coyote.html
> 
> Look at the maxProcessors attribute.

I've tried setting that to 10 and restarting Tomcat, but when I do a "ps
auxm" I see 20 threads running under the Sun VM:

rshields     24058 15.0  8.3 310936 42832 pts/0    -    22:22
0:03 /var/tomcat/jdk1.5.0/bin/java -server -Xmx96m
-Dfile.encoding=ISO8859-15 -Xdebug -Xrunjdwp:transport=dt_soc
rshields         -  5.1    -      -     - -        Sl   22:22   0:01 -
rshields         -  0.4    -      -     - -        Sl   22:22   0:00 -
rshields         -  0.0    -      -     - -        Sl   22:22   0:00 -

etc, 17 threads more.

In my conf/server.xml, the only connector defined is:

  <Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
             port="8080"
             minProcessors="5"
             maxProcessors="10"
             enableLookups="true"
             redirectPort="8443"
             acceptCount="10"
             debug="0"
             connectionTimeout="20000"
             useURIValidationHack="false" />

>  - Chuck

Regards
Rob

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