Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262610AbTENUDE (ORCPT ); Wed, 14 May 2003 16:03:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262710AbTENUDD (ORCPT ); Wed, 14 May 2003 16:03:03 -0400 Received: from port-212-202-172-137.reverse.qdsl-home.de ([212.202.172.137]:10904 "EHLO jackson.localnet") by vger.kernel.org with ESMTP id S262610AbTENUC7 convert rfc822-to-8bit (ORCPT ); Wed, 14 May 2003 16:02:59 -0400 Date: Wed, 14 May 2003 22:18:58 +0200 (CEST) Message-Id: <20030514.221858.846957347.rene.rebe@gmx.net> To: mikpe@csd.uu.se Cc: linux-kernel@vger.kernel.org Subject: Re: APIC error From: Rene Rebe In-Reply-To: <16066.15561.296849.757291@gargle.gargle.HOWL> References: <20030513.213112.184808431.rene.rebe@gmx.net> <16066.15561.296849.757291@gargle.gargle.HOWL> X-Mailer: Mew version 3.1 on XEmacs 21.4.12 (Portable Code) Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT X-Spam-Score: -26.7 (--------------------------) X-Scanner: exiscan for exim4 (http://duncanthrax.net/exiscan/) *19G2iQ-0002bq-U8*B5tMenZOK6.* Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1534 Lines: 42 HI, On: Wed, 14 May 2003 14:55:37 +0200, mikpe@csd.uu.se wrote: > > Those errors only seem to happen during high disk-io (SCSI or IDE). > > What specific meaning do those errors have? Are they dangerous? > > They are defined in Intel's IA32 manual set, volume 3, > "System Programming Guide", downloadable from developer.intel.com. > > These errors mean that APIC bus messages are lost or have checksum errors. > You don't say which kernel you're using or which chipset, but chances are > your mobo's APIC bus is noisy. > > > Each CPU survives hours in memtest86 ... And with maxcpus=1 it also > > does not seem to happen ... The BIOS is latest. > > You can try booting with "noapic", that should let you keep using SMP > while avoiding your possibly buggy APIC bus. Thanks for the anwer I googled for this before the mail but only found much noise ... I'll triy noapic (I thought this would disable SMP, too), but I already had to notice that with maxcpus=1 I also get some few APIC errors. Is there drawback in using noapic in SMP mode? Sincerely, Ren? Rebe -- Ren? Rebe - Europe/Germany/Berlin rene@rocklinux.org rene.rebe@gmx.net http://www.rocklinux.org http://www.rocklinux.org/people/rene http://gsmp.tfh-berlin.de/gsmp http://gsmp.tfh-berlin.de/rene - 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/