> one of them is the (relatively high) interrupt overhead
> as reported by many. There is a good description of the problem
> in the Click's paper at http://www.pdos.lcs.mit.edu/click/ and
> in the Mogul's paper referenced in there.
> The advantage of this approach is that you don't have to implement
> a real polling system (which can become expensive when the number
> of cards in a box becomes large), and that modifications are
> relatively small and, especially, device-independent. Hopefully
> we will be able to post them soon, after a bit more experiments.
Interesting. We've been working on the Lazy Receiver Processing
approach (http://www.cs.rice.edu/CS/Systems/LRP) to this problem
in combination with polling after processing as suggested by Mogul's
paper. As I understand it, your approach has the benefit of simplicity
over the LRP approach.
Jeffrey
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