From: Andi Kleen <andi@firstfloor.org>
To: Animesh K Trivedi1 <ZRLATR@ch.ibm.com>
Cc: linux-perf-users@vger.kernel.org, Bernard Metzler <BMT@zurich.ibm.com>
Subject: Re: cboxes on NehalemEX
Date: Wed, 28 Nov 2012 12:33:22 -0800 [thread overview]
Message-ID: <m2fw3th3hp.fsf@firstfloor.org> (raw)
In-Reply-To: <OF1ABEA8BA.B758F3D3-ONC1257AB8.00507893-C1257AB8.00512F18@ch.ibm.com> (Animesh K. Trivedi1's message of "Fri, 16 Nov 2012 15:46:36 +0100")
Animesh K Trivedi1 <ZRLATR@ch.ibm.com> writes:
> Hi all,
>
> I'm testing/using uncore support on a dual socket NehalemEX (Xeon E7520)
> box on 3.7-rc1.
> It shows me only 4 CBOXes under devices. Although the document (Uncore
> programming
> for 7500) says that there should be 8 CBOXes. Am I missing something?
The number of CBOXes depends on the number of CPU cores in the socket.
Each core has a CBOX. You would only see 8 on a 8 core CPU.
> get a global view of LLC behaviour shouldn't I have to sum up the count of
> events from all
> physical processor's CBOXes.
Yes. Each BOX has its own counters.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
next prev parent reply other threads:[~2012-11-28 20:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-16 14:46 cboxes on NehalemEX Animesh K Trivedi1
2012-11-28 20:33 ` Andi Kleen [this message]
2012-11-29 9:15 ` Animesh K Trivedi1
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