Tomcat under a high load

[David Frankson <df...@qwest.net>]

    I am experiencing problems with Tomcat under a heavy load, and I'm hoping someone has dealt with this before.  

I am using Tomcat 4.0 on a server with heavy traffic.  Randomly under these conditions users get a "Page can not be displayed" error, yet the server's 4 cpus are not completely maxed out and the Tomcat/Java VM still has available memory.  The logs don't display any problem.  Anyone seen this before?  It is not an easily reproducible condition.

Dave

Re: Tomcat under a high load

[Remy Maucherat <rm...@home.com>]

> I am using Tomcat 4.0 on a server with heavy traffic.  Randomly under
these
> conditions users get a "Page can not be displayed" error, yet the server's
> 4 cpus are not completely maxed out and the Tomcat/Java VM still has
available
> memory.  The logs don't display any problem.  Anyone seen this before?
> It is not an easily reproducible condition.

If the situation doesn't degrade over time, then it's just that you should
raise the number of processors the HTTP connector is allowed to use.

    <Connector className="org.apache.catalina.connector.http.HttpConnector"
               port="8080" minProcessors="5" maxProcessors="75"
               enableLookups="true" redirectPort="8443"
               acceptCount="10" debug="0" connectionTimeout="60000"/>

Change "maxProcessors" and give it a higher value.

Remy


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