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    SubjectRe: [PATCH] mm: yield during swap prefetching
    Con Kolivas <kernel@kolivas.org> wrote:
    >
    > > but, but. If prefetching is prefetching stuff which that game will soon
    > > use then it'll be an aggregate improvement. If prefetch is prefetching
    > > stuff which that game _won't_ use then prefetch is busted. Using yield()
    > > to artificially cripple kprefetchd is a rather sad workaround isn't it?
    >
    > It's not the stuff that it prefetches that's the problem; it's the disk
    > access.

    But the prefetch code tries to avoid prefetching when the disk is otherwise
    busy (or it should - we discussed that a bit a while ago).

    Sorry, I'm not trying to be awkward here - I think that nobbling prefetch
    when there's a lot of CPU activity is just the wrong thing to do and it'll
    harm other workloads.
    -
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