[rtl] interrupt driven vs. periodic real-time tasks

[hardware@ees1s0.engr.ccny.cuny.edu (Kurt Rosenfeld)]

Hello everyone.  I hope you are all enjoying the fall weekend.

I am confused about the difference between interrupt-driven and periodic 
real-time tasks.  From what I have read, it seems that the periodic tasks are 
basically being driven by interrupts generated by a hardware timer in machine.  
Is this true?  If this is true, it seems like all of the real-time timing 
performance/statistics would be the same for an interrupt-driven and a periodic 
task.  Is this true?  For example, do we get exactly the same performance from a 
1000Hz make_periodic task and an RT handler that responds to an 1000Hz external 
hardware clock?

The answers to these questions might also be the answers to Donald Gaffney's 
recent questions.

-kurt 

--- [rtl] ---
To unsubscribe:
echo "unsubscribe rtl" | mail majordomo@rtlinux.cs.nmt.edu OR
echo "unsubscribe rtl <Your_email>" | mail majordomo@rtlinux.cs.nmt.edu
----
For more information on Real-Time Linux see:
http://www.rtlinux.org/~rtlinux/