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    SubjectRe: interrupt latency ?
    On Mon, 10 February 2003 13:30:49 -0500, Richard B. Johnson wrote:
    > On Mon, 10 Feb 2003, [iso-8859-1] J?rn Engel wrote:
    >
    > > An assembler interrupt handler that saves registers, tweaks a couple
    > > of bits, restores registers and gets the hell out of here should be in
    > > the order of 100 cycles, maybe less. Why is linux wasting all this
    > > time?
    >
    > FYI execution speed and interrupt latency doesn't scale well. You
    > are most always I/O bound somewhere.

    Ack. It always takes a moment to get used to these facts.

    Jörn

    --
    Beware of bugs in the above code; I have only proved it correct, but
    not tried it.
    -- Donald Knuth
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