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    SubjectRe: [PATCH 1/3] Zone reclaim V3: main patch
    > For Altix 20 means that the other node is remote but in the same 
    > enclosure / motherboard. Latency is very low in these cases. I think in
    > these small configurations it is better to go off node rather than using
    > the reclaim logic.

    On Opterons the NUMA factors are usually < 2, more towards 1, but people
    definitely note a difference between node and off node.
    So I don't think that's a good heuristic.

    I would use > LOCAL_DISTANCE or perhaps if you really want
    a new constant with value 12-15.

    > RECLAIM_DISTANCE can be set per arch if the default is not okay.

    Well if anything it would be per system - perhaps need to make
    it a boot option or somesuch later.

    -Andi
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