What do people think about adaptive polling?

Matthew Dillon dillon at apollo.backplane.com
Mon Dec 11 12:57:18 PST 2006

:At 05:48 11/12/2006, Matthew Dillon wrote:
:>[...]The idea is to be able to do an end-run around systems with broken
:>     interrupt routing by instituting adaptive polling.  Basically all
:>     devices that can produce events are polled at some reasonable minimum
:>     rate, say 50hz.  When polled, the device returns an indication as to
:>     whether it processed any new events or not.  [etc]
:Your problem will be with devices (if any exist) that don't give sane 
:status unless they think they have interrupted. If designers can get 
:the interrupt path wrong, they can get that wrong too.
:Bob Bishop		    +44 (0)118 940 1243

    Fortunately only the ATA hardware suffers from this particular problem.
    All other hardware I've ever come across has a reliable status register
    of some sort.
					Matthew Dillon 
					<dillon at backplane.com>

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