linux-kernel - Re: [PATCH] x86: new topology for multi-NUMA-node CPUs

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Date:	Sun, 21 Sep 2014 19:56:25 +0200
From:	Brice Goglin <brice.goglin@...il.com>
To:	Dave Hansen <dave@...1.net>, linux-kernel@...r.kernel.org
CC:	dave.hansen@...ux.intel.com, a.p.zijlstra@...llo.nl,
	mingo@...nel.org, hpa@...ux.intel.com, bp@...en8.de
Subject: Re: [PATCH] x86: new topology for multi-NUMA-node CPUs

Le 18/09/2014 21:33, Dave Hansen a écrit :
> After this set, there are only 2 sets of core siblings, which
> is what we expect for a 2-socket system.
>
> # cat cpu*/topology/physical_package_id | sort | uniq -c
>      18 0
>      18 1
> # cat cpu*/topology/core_siblings_list | sort | uniq -c
>      18 0-17
>      18 18-35
>

Thanks a lot for working on this. I can't comment on the code but at
least the above core_siblings values should fix the original problem
observed with hwloc. I don't have a E5 v3 to test but installing the
hwloc package and running lstopo should confirm that it now sees a
single socket per group of 2 NUMA nodes as expected.

Brice

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