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    SubjectRe: [PATCH] change global zonelist order on NUMA v2
    Date
    On Thursday 26 April 2007 11:34:17 KAMEZAWA Hiroyuki wrote:
    >
    > Changelog from V1 -> V2
    > - sysctl name is changed to be relaxed_zone_order
    > - NORMAL->NORMAL->....->DMA->DMA->DMA order (new ordering) is now default.
    > NORMAL->DMA->NORMAL->DMA order (old ordering) is optional.
    > - addes boot opttion to set relaxed_zone_order. ia64 is supported now.
    > - Added documentation
    >
    > patch is against 2.6.21-rc7-mm2. tested on ia64 NUMA box. works well.

    IMHO the change should be default (without any options) unless someone
    can come up with a good reason why not. On x86-64 it should be definitely
    default.

    If there is a good reason on some architecture or machine a user option is also not a
    good idea, but instead it should be set automatically by that architecture or machine
    on boot.

    -Andi

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