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    SubjectRe: [PATCH 09/12] irq: implement IRQ expecting
    On Thu, 17 Jun 2010 13:23:27 +0200
    Tejun Heo <tj@kernel.org> wrote:

    > On 06/17/2010 01:12 PM, Thomas Gleixner wrote:
    > >> Hmmm.... oh, I see. Wouldn't it be much better to use moving avg of
    > >> IRQ durations instead of letting the driver specify it? Drivers are
    > >> most likely to just hard code it and It's never gonna be accurate.
    > >
    > > Right, but that's probably more accurate than the core code heuristics
    > > ever will be.
    >
    > Eh, not really. For ATA at least, there will be three different
    > classes of devices. SSDs, hard drives and optical devices

    At least four: It may also be battery backed RAM.

    Alan




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