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Checking Memory Usage and Connector Threads

Ensure that Tomcat runs smoothly by checking memory usage and connector threads using the Tomcat Manager application. This application requires that a Tomcat administrator user is set up in the file $CATALINA_HOME/conf/tomcat-users.xml. Note that this file may have limited permissions.

About this task

The memory and thread settings below are recommendations only, and should be tailored as needed based on web server usage.

Procedure

  1. Open an Internet browser and access the URL http://HOSTNAME:PORT, where HOSTNAME is the host name of the machine on which you installed Tomcat, and PORT is the port number of Tomcat (defaults to 8080).
  2. On the right, select Manager App.
  3. When prompted, enter a Tomcat user name and password and click OK.
    The Tomcat Web Application Manager window appears.
  4. Under Manager at top right, select Server Status.
    A Server Status windows appears.
  5. Under JVM, check the memory allocation. We recommend a value of at least 1024 (decimal).
  6. For your connector port (defaults to 8009), check Max Threads. SDL recommends a value of 500.