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    SubjectRe: [RFC] [PATCH] cache pollution aware __copy_from_user_ll()
    Andi Kleen <ak@suse.de> wrote:
    >
    > On Friday 02 September 2005 04:08, Andrew Morton wrote:
    >
    > > I suppose I'll queue it up in -mm for a while, although I'm a bit dubious
    > > about the whole idea... We'll gain some and we'll lose some - how do we
    > > know it's a net gain?
    >
    > I suspect it'll gain more than it loses. The only case where it might
    > not gain is immediately someone reading the data from the page cache again
    > after the write.

    That's a pretty common case - temporary files.

    > But I suppose that's far less frequent than writing the data.

    yup.

    Hiro, could you please send through a summary of the performance testing
    results sometime? Runtimes rather than oprofile output?
    -
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