From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Jones Subject: Re: WARNING: unexpected IO-APIC, please mail to linux-smp@vger.kernel.org Date: Fri, 22 Nov 2002 10:19:16 +0100 Sender: linux-smp-owner@vger.kernel.org Message-ID: <20021122101916.A20169@suse.de> References: <3DDD9B56.6C3B5DFB@unminc.com> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <3DDD9B56.6C3B5DFB@unminc.com>; from craiga@unminc.com on Thu, Nov 21, 2002 at 06:49:58PM -0800 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Craig Anderson Cc: linux-smp@vger.kernel.org On Thu, Nov 21, 2002 at 06:49:58PM -0800, Craig Anderson wrote: > Hello Kernel Gods, > I have a riddle for you all. I have a 2-processor machine that > thinks > it has 4 processors but looks to be using only 1 (I only get 1 > processors > worth of performance out of it). Here is the messages file entries. > Included is the following message: > > WARNING: unexpected IO-APIC, please mail to linux-smp@vger.kernel.org > > This is a straight-from-the-CD RedHat 7.2 system. Following the > messages file output is some output from the dmesg command. Upgrade your kernel. You have P4 Xeons with hyperthreading. 2.4.7 doesn't support this. I'd recommend updating to something newer anyway as a lot of things have been fixed since 2.4.7 Dave -- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs