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    SubjectRe: [Lse-tech] Re: 10.31 second kernel compile
    On Sat, 16 Mar 2002, Linus Torvalds wrote:
    > On Sat, 16 Mar 2002 yodaiken@fsmlabs.com wrote:
    > >
    > > What about 2M pages?
    >
    > Not useful for generic loads right now, and the latencies for clearing or
    > copying them them etc (ie single page faults - nopage or COW) are still
    > big enough that it would likely be a performance problem at that level.
    > And while doing IO in 2MB chunks sounds like fun, since most files are
    > still just a few kB,

    In other words, large pages should be a "special hack" for
    special applications, like Oracle and maybe some scientific
    calculations ?

    Grabbing some bitflags in generic datastructures shouldn't
    be an issue since free bits are available.

    regards,

    Rik
    --
    <insert bitkeeper endorsement here>

    http://www.surriel.com/ http://distro.conectiva.com/

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