Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262290AbTFJUFv (ORCPT ); Tue, 10 Jun 2003 16:05:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262135AbTFJUE2 (ORCPT ); Tue, 10 Jun 2003 16:04:28 -0400 Received: from jma24.plus.com ([212.159.46.210]:58714 "EHLO lion") by vger.kernel.org with ESMTP id S262290AbTFJUC6 (ORCPT ); Tue, 10 Jun 2003 16:02:58 -0400 From: "John Appleby" To: , Subject: RE: Wrong number of cpus detected/reported Date: Tue, 10 Jun 2003 21:21:39 +0100 Message-ID: <434747C01D5AC443809D5FC540501131569E@bobcat.unickz.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2616 In-Reply-To: <434747C01D5AC443809D5FC5405011310B7169@bobcat.unickz.com> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Importance: Normal Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 777 Lines: 21 > After the upgrade the system is reporting that the machine has 8 cpu > instead of 4. I have been looking for some kind of information on the > Internet (www.google.com/linux) about that but I didn't have success. I suspect that it is identifying 4 Xeon CPUs with Hyperthreading, which will correctly double the amount of processors your kernel thinks you have. Intel's Hyperthreading This ought to be a good thing... the only thing I don't quite understand is that I thought Hyperthreading was added in 2.4.17. Regards, John - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/