Re: [patch] mm: skip rebalance of hopeless zones

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On Thu, Dec 9, 2010 at 3:23 AM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> This problem would have got worse when slub came along doing its stupid
> unnecessary high-order allocations.

Stupid, maybe but not unnecessary because they're a performance
improvement on large CPU systems (needed because of current SLUB
design). We're scaling the allocation order based on number of CPUs
but maybe we could shrink it even more.

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