DragonFly kernel List (threaded) for 2006-12
DragonFly BSD
DragonFly kernel List (threaded) for 2006-12
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Re: What do people think about adaptive polling?


From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Mon, 11 Dec 2006 12:42:14 -0800 (PST)

:It's a good idea but i think that it could be improved:
:
:For devices with working interrupts if a device starts generating
:too many interrupts, just switch to polling mode.
:
:This would be very useful for things like network cards which
:could switch from interrupt to polling mode on the fly and get
:better performance with higher load.

    It's hard to how many is too many, but this would certainly be a benefit
    to older network cards which do not have interrupt moderation.

    The parallel port comes to mind, though.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>



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