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

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Message-ID: <86802c440904031518l155d9f9bj14a120a89bde6a7a@mail.gmail.com>
Date:	Fri, 3 Apr 2009 15:18:58 -0700
From:	Yinghai Lu <yhlu.kernel@...il.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andi Kleen <andi@...stfloor.org>, Chris Worley <worleys@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Off topic: Numactl "distance" wrong

On Fri, Apr 3, 2009 at 2:54 PM, David Rientjes <rientjes@...gle.com> wrote:
> On Fri, 3 Apr 2009, Andi Kleen wrote:
>
>> That's the same really. Think about it. No SLIT on a NUMA system is a wrong
>> SLIT.
>>
>
> Unless each node really is symmetrically distant from each other node, in
> which case the distance is reported correctly as a result of the differing
> pxms.
>

when ACPI is used, first PXM show up in SRAT table will become node0...
so you already have node_to_pxm mapping.

YH
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