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    SubjectRe: [RFC][PATCH 14/26] sched, numa: Numa balancer
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    On Sat, 2012-07-07 at 14:26 -0400, Rik van Riel wrote:
    > > +/*
    > > + * Assumes symmetric NUMA -- that is, each node is of equal size.
    > > + */
    > > +static void set_max_mem_load(unsigned long load)
    > > +{
    > > + unsigned long old_load;
    > > +
    > > + spin_lock(&max_mem_load.lock);
    > > + old_load = max_mem_load.load;
    > > + if (!old_load)
    > > + old_load = load;
    > > + max_mem_load.load = (old_load + load) >> 1;
    > > + spin_unlock(&max_mem_load.lock);
    > > +}
    >
    > The above in your patch kind of conflicts with this bit
    > from patch 6/26:

    Yeah,.. its pretty broken. Its also effectively disabled, but yeah.


    > Looking at how the memory load code is used, I wonder
    > if it would make sense to count "zone size - free - inactive
    > file" pages instead?

    Something like that, although I guess we'd want a sum over all zones in
    a node for that.


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