Hi all,
I was hoping someone would be able to assist me with debuging this problem.
Firstly, a bit of Setup background.
Tomcat 4.1.12 running with JDK1.3.1_04 (Sun Release), under Redhat Linux
7.3.
The application consists of various JSP's and Servlets.
I've been noticing excessive thread pooling, what seems to happen is this.
- A POST is made to a Servlet - which runs a JavaBean, updating a DB.
- During this POST, 3 Additional threads are created by Tomcat.
Once this POST has finished, the thread count is never reduced, whats
more of a problem is the next time the same Servlet is POST'd to,
another 3 threads are created.
So, after a few hours we have a few hundred threads running, and after
running it overnight, there can be over a thousand threads by morning,
at which point Tomcat is unresponsive, and unstoppable (kill -9 works
though).
The servlets/beans connected via Corba to a backend system, which has
been running via in various implementations for a while.
I have checked the connector configuration, we are using Coyote1.1,
below is the relevant config file section...
--
<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8000" minProcessors="5" maxProcessors="75"
enableLookups="false"
acceptCount="10" debug="0" scheme="https" secure="true"
useURIValidationHack="false">
<Factory
className="org.apache.coyote.tomcat4.CoyoteServerSocketFactory"
clientAuth="false" protocol="TLS" keystorePass="<hidden :-)>" />
</Connector>
--
Any assistance, places too look, suggestions would be great.
Kind Regards
Chris Massam
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