Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265225AbUAPBrQ (ORCPT ); Thu, 15 Jan 2004 20:47:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265245AbUAPBrQ (ORCPT ); Thu, 15 Jan 2004 20:47:16 -0500 Received: from modemcable178.89-70-69.mc.videotron.ca ([69.70.89.178]:42624 "EHLO montezuma.fsmlabs.com") by vger.kernel.org with ESMTP id S265225AbUAPBrP (ORCPT ); Thu, 15 Jan 2004 20:47:15 -0500 Date: Thu, 15 Jan 2004 20:46:33 -0500 (EST) From: Zwane Mwaikambo To: Gaspar Bakos cc: linux-kernel@vger.kernel.org Subject: Re: SMP kernel, only single processor appears (fwd) In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1067 Lines: 24 On Thu, 15 Jan 2004, Gaspar Bakos wrote: > Hi, > > I have an Intel 7505VB2 dual Xeon motherboard with 2x2.66GHz CPUs, Redhat > 9.0 and self-compiled 2.4.23 kernel. Interestingly, I see only one CPU > with e.g. "top", or cat /proc/cpuinfo, etc. > > I have to tell though that I installed this system by cloning the disk of > another PC, which is running a single processor; then booting in the dual > processor computer from the cloned disk (with a bootfloppy), and then > recompiling the kernel (and rebooting to the new SMP enabled kernel). > Seems to me that this is not enough, and I might have missed something. > > Any advice would be welcome. This looks like you have 2 physical processors. Perhaps you don't have hyperthreading enabled, i presume you want 4 logical processors. Try the "acpi=ht" kernel parameter. - 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/