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    SubjectRe: [2.4.17/18pre] VM and swap - it's really unusable
    On Mon, Jan 21, 2002 at 05:05:01PM +0100, Daniel Phillips wrote:
    > > I think of "benefit", perhaps naiively, in terms of something that can
    > > be measured or demonstrated rather than just announced.
    >
    > But you see why asap scheduling improves latency/throughput *in theory*,

    Nope. And I don't even see a relationship between preemption and asap I/O
    schedulding. What make you think that I/O threads won't be preempted by
    other threads?

    > don't you? As for the measured benefit, there have been a steady stream of
    > postive reports on lkml.

    I have not seen a single well structured benchmark that shows a significant
    difference. I've seen lots of benchmarks with odd mixes of different patches
    showing something unknown. How about a simple clear dbench?

    >My own experience is that the usability of my
    > laptop with its small memory is much improved under heavy IO load.

    No comment.

    --
    ---------------------------------------------------------
    Victor Yodaiken
    Finite State Machine Labs: The RTLinux Company.
    www.fsmlabs.com www.rtlinux.com

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