[Beowulf] Bernhard Kuhn's real time interrupt patch
patrick at myri.com
Fri Mar 25 16:10:15 EST 2005
Andrew Piskorski wrote:
> So I was wondering, has anyone tried that? I believe the low-latency
> OS-bypass NICs are already doing some fancy mix of polling and waiting
> for slow Linux interrupts, but shouldn't Kuhn's rtirq-patch still
I don't think this patch improves the interrupt latency or the interrupt
overhead when there is no contention. Context switching is the metric
you want to improve.
With OS-bypass NICs, interrupts are rare and there is usually no contention.
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