This article only applies to the Classic JOC interface

The information provided on this page only applies to the Classic JOC user interface, which is entering retirement:

FEATURE AVAILABILITY ENDING WITH RELEASE 1.11

The JOC Cockpit user interface replaces JOC:

FEATURE AVAILABILITY STARTING FROM RELEASE 1.11

See the JOC Cockpit article as a starting point for information about the JOC Cockpit.

Why is there a delay before the log file shows in the GUI?

Question:

If I click on the menu button and select show log ...sometimes the JOC interface comes up totally blank (almost as if there is no log). After a while the log finally appears on the screen. Can you point out why there might be a delay?

Answer:

Check if the number of process classes in your scheduler.xml is sufficient(defaults to 10), e.g.

        <process_classes>
            <process_class max_processes="20"/>
            <process_class name="many_processes" max_processes="30"/>
            ...
        </process_classes>

A set of standard processes runs in the default process class (the one without the attribute name=). The handling of TCP requests (which is what you cause by using the built-in web interface) occupies one of these processes. What could have happened is that some more processes (=jobs) were running in the default process class and the web interface had to wait for a process to be freed.