why change the irq smp_affinity of a process?

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  one of my current students observes the following -- that the proc
files /proc/irq/<PID>/smp_affinity are not only readable, but writable
and wonders why one would want to *change* the smp_affinity of IRQs
for a given process (if that's actually what that would mean).

  i've never looked closely at that.  any thoughts?

rday

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Robert P. J. Day                               Waterloo, Ontario, CANADA

        Top-notch, inexpensive online Linux/OSS/kernel courses
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