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    SubjectRe: [PATCH 7/7] iosched: introduce deadline_kick_page()
    Jens,

    On Wed, Jun 28, 2006 at 01:27:32PM +0200, Jens Axboe wrote:
    > > The overhead of deadline_kick_page() becomes large when the request is
    > > large (256 pages). But I guess there's way to optimize it:
    > > - most requests will be consisted of a set of continuous pages, i.e. a
    > > range comparison will be sufficient.
    > > - for a system with lots of queued requests(>100), maybe the gain can
    > > well pay for the overheads?
    >
    > Sorry, there's just no way that something like that is acceptable for
    > inclusion. I don't care much about the overhead numbers (I can see from
    > the code that it sucks :-), I wanted to see some numbers on what
    > scenarios this helps performance and by how much.

    Ok, thanks. I hope that I'll be able to bring with some performance
    numbers the next time :-)

    Regards,
    Wu
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