From owner-freebsd-hardware@FreeBSD.ORG Mon Feb 1 17:25:50 2010 Return-Path: Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 45AF11065672; Mon, 1 Feb 2010 17:25:50 +0000 (UTC) (envelope-from hoang.v.d@creativesolutions.at) Received: from west.smtp.exch021.serverdata.net (hub021-nj-3.exch021.serverdata.net [206.225.164.218]) by mx1.freebsd.org (Postfix) with ESMTP id 05F748FC1C; Mon, 1 Feb 2010 17:25:49 +0000 (UTC) Received: from MBX021-E2-NJ-5.exch021.domain.local ([169.254.7.217]) by HUB021-NJ-3.exch021.domain.local ([10.240.4.36]) with mapi; Mon, 1 Feb 2010 09:25:49 -0800 From: "Hoang V.D. | Creative Solutions GmbH" To: "freebsd-hardware@freebsd.org" Thread-Topic: FreeBSD 8.0, Intel Xeon E5530, Dell R410, only 2 cores available Thread-Index: AcqhOrx/G8GKs9gGTfi/PH73nxAYOQCU63wAAA+3F5D//6jigIAAfzjg Date: Mon, 1 Feb 2010 17:25:45 +0000 Message-ID: <65BCAB515656D34AA48B0E713966CC8305F832@MBX021-E2-NJ-5.exch021.domain.local> References: <65BCAB515656D34AA48B0E713966CC83046A64@MBX021-E2-NJ-5.exch021.domain.local> <201002010932.20443.jhb@freebsd.org> <65BCAB515656D34AA48B0E713966CC8305F775@MBX021-E2-NJ-5.exch021.domain.local> <201002011150.31782.jhb@freebsd.org> In-Reply-To: <201002011150.31782.jhb@freebsd.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Cc: Ivan Voras Subject: RE: FreeBSD 8.0, Intel Xeon E5530, Dell R410, only 2 cores available X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Feb 2010 17:25:50 -0000 I would like to thanks both of you John and Ivan for your assistance. We th= ink=20 we have found out the cause of the problem now, this thread from Dell's "Li= nux=20 PowerEdge" list probably explained it: http://lists.us.dell.com/pipermail/linux-poweredge/2010-January/041159.html For some weird reason Dell decided to turn off two cores per CPU by default= (not HT but real cores) for those servers. We will ask the datacenter guys to lo= ok at that specific BIOS option tomorrow and fix it. Again, many thanks from happy FreeBSD users :-) Best regards, Hoang > -----Original Message----- > From: John Baldwin [mailto:jhb@freebsd.org] > Sent: Monday, February 01, 2010 5:51 PM > To: Hoang V.D. | Creative Solutions GmbH > Cc: freebsd-hardware@freebsd.org > Subject: Re: FreeBSD 8.0, Intel Xeon E5530, Dell R410, only 2 cores avail= able >=20 > Yes, they are disabled in both the APIC and SRAT (NUMA info) tables. CPU= s > here mean SMT threads. Effectively each logical CPU that is visible to t= he > OS should be listed in the ACPI APIC table. >=20 > Grr, it looks like cpuid hasn't been updated to parse the cpuid bits that > tell you how many threads and cores there are for a single package, but I > suspect it would tell you the same thing that FreeBSD is claiming. What = does > your BIOS say about the number of cores in your CPU? >=20 > -- > John Baldwin