There are different ways to track them and retrieve them, depending on exactly what you want.
For example, if you’re interested in near real-time monitoring for the overall system or specific jobs or tasks, you want to review Management Central monitors through System i Navigator.
Or if you’re interested in historical breakdowns, you might find job accounting better suited. See the Managing job accounting topic for information on setting it up and extracting information.
If you have something in particular in mind that doesn’t seem to fit in those, then describe what you need to do. Perhaps useful suggestions can be made.