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Re: [rtl] Background performance






> My experience is that if the RT task is "light weight", that is it 
> gets finished quickly, it is not noticed by an operator who is running


In my system, I receive a burst of 64 interrupts.  The bursts occur at
10hz, and the interrupts within the burst are 700 us apart.  It takes each
interrupt approx 200 us to complete.  At the end of each burst an RT-linux
task is stated witch processes the data collected during the burst.  That
taks takes 500 us to 1000 us to complete depending on conditions.

Given the above status, I freely use all the normal tools suchs as vi,
gcc, tcl/tk, tons of open windows with no noticable system degradation.

It is also possible (and easy) to write a rt-module which will use all of
the cpu cycles and lock up the system.

:-) C. Wayne Wright


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