linux-kernel - Re: Off topic: Numactl "distance" wrong

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Message-ID: <20090403215351.GF11935@one.firstfloor.org>
Date:	Fri, 3 Apr 2009 23:53:51 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andi Kleen <andi@...stfloor.org>, Chris Worley <worleys@...il.com>,
	Yinghai Lu <yhlu.kernel@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Off topic: Numactl "distance" wrong

On Fri, Apr 03, 2009 at 02:43:32PM -0700, David Rientjes wrote:
> On Fri, 3 Apr 2009, Andi Kleen wrote:
> 
> > > Who would be the right person (or list) to talk about this?
> > 
> > Your BIOS vendor whose code reported the wrong values. Not that it matters
> > really on small systems.
> > 
> 
> The numactl --hardware values are coming directly from the sysfs per-node 
> distance interface, so this may not be a result of erroneous BIOS data but 
> rather the lack of a SLIT to describe the physical topology better.

That's the same really. Think about it. No SLIT on a NUMA system is a wrong
SLIT.

BTW there are more cases, like illegal slit which is also replaced
with 10/20.

-Andi
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