[rtl] rt_task_make_periodic and failed deadlines

[Kenneth Jacker <khj@cs.appstate.edu>]

Say rt_task_make_periodic requests a RT task to run every 100ms, but
the task (unknowingly) requires 125ms to run.  Or another scenario: a
RT task is scheduled at a rate faster than the RTL scheduler is able
to repeatedly invoke it.

Can these situations be detected at runtime?  If so, how?

We were sampling an analog signal at, apparently, a rate greater than
RTL could support.  We inferred that the rate was too high only after a
careful examination of the digitized data (samples were missed).

Thanks for any ideas!

-Prof Kenneth H Jacker       khj@cs.appstate.edu
-Computer Science Dept       www.cs.appstate.edu/~khj
-Appalachian State Univ
-Boone, NC  28608  USA        
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