PMDF is distributed with a default Job Controller configuration that is suitable for most sites. This default configuration defines a single queue named DEFAULT with a job limit of 4. The DEFAULT queue is used by all PMDF channels which do not specify a queue using the queue option. (In the default configuration, the queue DEFAULT is actually the only queue.)

In addition, the supplied Job Controller configuration file includes channel definitions for all of the supplied and supported PMDF channels.

The Job Controller configuration file is required. If it is not present, or its contents are incorrect, the Job Controller does not start.

There is no need to modify the configuration file unless you choose to add queues, modify queue parameters, modify channel options, or add processing information for locally developed channels. If you do want to make such modifications, you should not alter the Job Controller configuration file itself since it is replaced when you upgrade PMDF and you lose your modifications. Instead, create a job_controller.cnf_site file in the PMDF table directory containing your own definitions. The Job Controller configuration file reads in this site supplied file, if it exists.