From owner-freebsd-questions@FreeBSD.ORG Tue Mar 13 10:40:46 2012 Return-Path: Delivered-To: freebsd-questions@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 610FC106568E for ; Tue, 13 Mar 2012 10:40:46 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3cd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id D36C68FC12 for ; Tue, 13 Mar 2012 10:40:45 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [IPv6:2001:8b0:151:1:fa1e:dfff:feda:c0bb]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.5/8.14.5) with ESMTP id q2DAefAt020030 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Tue, 13 Mar 2012 10:40:41 GMT (envelope-from matthew@FreeBSD.org) X-DKIM: OpenDKIM Filter v2.5.0 smtp.infracaninophile.co.uk q2DAefAt020030 Authentication-Results: smtp.infracaninophile.co.uk/q2DAefAt020030; dkim=none (no signature); dkim-adsp=none Message-ID: <4F5F2429.5060502@FreeBSD.org> Date: Tue, 13 Mar 2012 10:40:41 +0000 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 MIME-Version: 1.0 To: Volodymyr Kostyrko References: <4F5E031D.5060203@gmail.com> <4F5E2ADB.6020104@FreeBSD.org> <4F5F00AA.1060008@gmail.com> <4F5F07A3.2010606@FreeBSD.org> <4F5F0C8A.7090203@gmail.com> <4F5F2068.8050101@FreeBSD.org> <4F5F214A.6070509@gmail.com> In-Reply-To: <4F5F214A.6070509@gmail.com> X-Enigmail-Version: 1.3.5 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig31502CA6E5312FDCA997BCEC" X-Virus-Scanned: clamav-milter 0.97.3 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on lucid-nonsense.infracaninophile.co.uk Cc: freebsd-questions@FreeBSD.org Subject: Re: 9.0 spontaneously reboots X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 Mar 2012 10:40:46 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig31502CA6E5312FDCA997BCEC Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 13/03/2012 10:28, Volodymyr Kostyrko wrote: > Matthew Seaman wrote: >> On 13/03/2012 08:59, Volodymyr Kostyrko wrote: >>> The only other weird thing about this server is: >>> >>> dev.cpu.0.temperature: 37,0C >>> dev.cpu.1.temperature: 37,0C >>> dev.cpu.2.temperature: 35,0C >>> dev.cpu.3.temperature: 35,0C >>> dev.cpu.4.temperature: 43,0C >>> dev.cpu.5.temperature: 43,0C >>> dev.cpu.6.temperature: 38,0C >>> dev.cpu.7.temperature: 38,0C >>> dev.cpu.8.temperature: 38,0C >>> dev.cpu.9.temperature: 38,0C >>> dev.cpu.10.temperature: 37,0C >>> dev.cpu.11.temperature: 37,0C >>> dev.cpu.12.temperature: 33,0C >>> dev.cpu.13.temperature: 33,0C >>> dev.cpu.14.temperature: 34,0C >>> dev.cpu.15.temperature: 34,0C >>> >>> And it's consistent - cores 4 and 5 always are hotter then any other.= >>> This can be something with scheduler, however this started before any= >>> actual load. Though numbers are normal I had never seen something >>> alike... >> >> Two cores per socket, and 8 sockets on the board? If so, that looks >> absolutely fine to me. The average temperature is 36.8C but 43.0C is >> still well within spec. That difference of just over 6 degrees is not= >> really significant and probably entirely due to different airflow >> patterns over the different CPU sockets. If you swap the CPU package = in >> that socket with one of the other ones, you'll find the hot spot stays= >> put. You might be able to even things out by rerouteing cables, but >> really it's not worth the hassle and won't make any perceptible >> difference to performance. >=20 > Nope: >=20 > CPU: Intel(R) Xeon(R) CPU E5620 @ 2.40GHz (2394.05-MHz > K8-class CPU) > FreeBSD/SMP: Multiprocessor System Detected: 16 CPUs > FreeBSD/SMP: 2 package(s) x 4 core(s) x 2 SMT threads >=20 > So the difference is about one physical core with two SMT threads. >=20 Which explains why the numbers go in pairs -- there's only 8 physical cor= es. Even so, I don't think there's any great problem there. Different cores in the same package can have different temperatures -- that's perfectly normal, and due to the physical properties of the CPU package and the local environment rather than any difference in processing load between cores. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. PGP: http://www.infracaninophile.co.uk/pgpkey --------------enig31502CA6E5312FDCA997BCEC Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk9fJCkACgkQ8Mjk52CukIxATQCeOoeUvTKoiUOwbtO57CHbkCSN cuEAnivdZ7iPwhEs8+WGh8vfO9UC8w0S =nw7p -----END PGP SIGNATURE----- --------------enig31502CA6E5312FDCA997BCEC--