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DateThu, 8 Apr 2004 02:14:48 +0200
FromAndi Kleen <>
SubjectRe: NUMA API for Linux
On Wed, 7 Apr 2004 16:56:39 -0700
Andrew Morton <akpm@osdl.org> wrote:

> If you _do_ use the feature, what is the overhead? 12 bytes for each and
> every vma? Or just for the vma's which have a non-default policy?

Just for VMAs with a non default policy. Default policy is always NULL

> Your patch takes the CONFIG_NUMA vma from 64 bytes to 68. It would be nice
> to pull those 4 bytes back somehow.

Eliminate the RB color field or use rb_next() instead of vm_next. First
alternative is cheaper.

-Andi
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