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    SubjectRe: [patch] zoned-2.3.27-E0
    Hi,

    On Fri, 12 Nov 1999 15:02:31 +0100 (CET), Ingo Molnar
    <mingo@chiara.csoma.elte.hu> said:

    > Stephen noticed that 2.3.27 doesnt boot on <=16MB boxes due to the zoned
    > allocator changes. The attached patch should fix this. Unfortunately i
    > found no way to prevent introducing the runtime 'nr_zones' variable.

    A quick special-case check on zones known to be empty would allow you to
    maintain performance even if you have zones which will never have any
    pages in them on a given machine.

    You need this anyway --- Alan pointed out that it is a significant hit
    on benchmarks if, during normal running, one zone fills up and you start
    falling back routinely to a lower zone.

    --Stephen

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