From owner-freebsd-scsi Tue Apr 22 19:44:17 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id TAA27886 for freebsd-scsi-outgoing; Tue, 22 Apr 1997 19:44:17 -0700 (PDT) Received: from Ilsa.StevesCafe.com (Ilsa.StevesCafe.com [205.168.119.129]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id TAA27079; Tue, 22 Apr 1997 19:32:36 -0700 (PDT) Received: from Ilsa.StevesCafe.com (localhost [127.0.0.1]) by Ilsa.StevesCafe.com (8.8.5/8.8.5) with ESMTP id UAA20177; Tue, 22 Apr 1997 20:32:24 -0600 (MDT) Message-Id: <199704230232.UAA20177@Ilsa.StevesCafe.com> X-Mailer: exmh version 2.0gamma 1/27/96 From: Steve Passe To: Gary Clark II cc: kmitch@weenix.guru.org, scsi@freebsd.org, smp@freebsd.org Subject: Re: Freezes/Reboots with -current ahc driver In-reply-to: Your message of "Tue, 22 Apr 1997 21:17:10 CDT." <199704230217.VAA02617@main.gbdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 22 Apr 1997 20:32:24 -0600 Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi, > > > I just upgraded my 2.2-STABLE system (from around April 1) to 3.0-current > > > (as of April 21) to gain use of the SMP stuff. > > > > > > Now, I am experiancing system freezes and reboots during the > > > nightly backup. No error messages ever appear from what I can tell. > > > ... > > I don't belive that this is a SMP problem. I'm running the same current > here and am seeing random reboots (not panics) 1-4 times a day. > I'm running on a 486DX4-100, 24MB and NO SMP. For the record, after DDB was added to the SMP kernel we demonstrated that the problem in this case is SMP, specifically the apicIPI() related deadlock. So this proves that my cheap bandaid doesn't solve the problem... I've got my thinking cap on, but for now I've suggested the user switch to a NON APIC_IO kernel. -- Steve Passe | powered by smp@csn.net | Symmetric MultiProcessor FreeBSD