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

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Message-ID: <541C72A9.9090509@sr71.net>
Date:	Fri, 19 Sep 2014 11:15:05 -0700
From:	Dave Hansen <dave@...1.net>
To:	Karel Zak <kzak@...hat.com>
CC:	linux-kernel@...r.kernel.org, dave.hansen@...ux.intel.com,
	a.p.zijlstra@...llo.nl, mingo@...nel.org, hpa@...ux.intel.com,
	brice.goglin@...il.com, bp@...en8.de
Subject: Re: [PATCH] x86: new topology for multi-NUMA-node CPUs

On 09/19/2014 04:45 AM, Karel Zak wrote:
>  hmm... it would be also nice to test it with lscpu(1) from 
>  util-linux (but it uses maps rather than lists from cpu*/topology/).

Here's the output with and with out Cluster-on-Die enabled.

Everything looks OK to me.  The cache size changes are what the CPU
actually tells us through CPUID leaves.

[root@...-grantley-03 ~]# diff -ru lscpu.nocod lscpu.wcod
--- lscpu.nocod	2014-09-19 04:01:17.846336595 -0700
+++ lscpu.wcod	2014-09-19 04:10:56.557383761 -0700
@@ -6,18 +6,20 @@
 Thread(s) per core:    2
 Core(s) per socket:    18
 Socket(s):             2
-NUMA node(s):          2
+NUMA node(s):          4
 Vendor ID:             GenuineIntel
 CPU family:            6
 Model:                 63
 Model name:            Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz
 Stepping:              2
-CPU MHz:               1340.468
-BogoMIPS:              4590.53
+CPU MHz:               1360.234
+BogoMIPS:              4590.67
 Virtualization:        VT-x
 L1d cache:             32K
 L1i cache:             32K
 L2 cache:              256K
-L3 cache:              46080K
-NUMA node0 CPU(s):     0-17,36-53
-NUMA node1 CPU(s):     18-35,54-71
+L3 cache:              23040K
+NUMA node0 CPU(s):     0-8,36-44
+NUMA node1 CPU(s):     9-17,45-53
+NUMA node2 CPU(s):     18-26,54-62
+NUMA node3 CPU(s):     27-35,63-71


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