Re: NPTL/SMP/NUMA

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Tue Jun 03 2003 - 17:32:17 EST


On Maw, 2003-06-03 at 23:26, William Voorsluys wrote:
> thinking on SMP machines, and which have been made to other purposes?
> Is there any feature on the library/kernel that make it possible to
> exploit the benefits of NUMA systems?

NUMA systems don't have any benefits (well other than engineering
considerations like practicality of construction). From a software
perspective NUMA is simply a question of making the loss as little
as possible.

There are patches to do more NUMA aware scheduling which help a bit
as well as to do things like replicate the kernel code to each node.

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