How to identify which processes are consuming %sys CPU

Solution Verified - Updated -

Issue

We have a couple systems that are at times showing a very large percentage of CPU being system vs. user.

Is there a way for us to determine what system level process(es) are consuming the CPU?

Environment

Red Hat Enterprise Linux (RHEL) 5
Red Hat Enterprise Linux (RHEL) 6
Red Hat Enterprise Linux (RHEL) 7

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