title: Is there any good real use case to showcase the capability of a PREEMPT-RT Linux kernel?
body: <p>We can always run some jitter tests to show some statistics and how deterministic a kernel can be, but those are all artificial test cases, not really interesting/impressive to show to students in a classroom or to a customer which is not deep in the OS field. Also, if the system is not under high load, most vanilla kernel can also achieve determinism pretty stable.</p>
  <p>I wonder is there a real world use case, e.g. in control, automation, robotics or any domain that can clearly show the benefit of PREEMPT-RT, or something that only a PREEMPT-RT Linux can do but a vanilla Linux cannot.</p>