From owner-freebsd-current@FreeBSD.ORG Mon Nov 24 13:31:04 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2DC0116A4CE for ; Mon, 24 Nov 2003 13:31:04 -0800 (PST) Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.86.163]) by mx1.FreeBSD.org (Postfix) with ESMTP id 59F2143FD7 for ; Mon, 24 Nov 2003 13:31:02 -0800 (PST) (envelope-from phk@phk.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.12.10/8.12.10) with ESMTP id hAOLUwDx023529; Mon, 24 Nov 2003 22:30:59 +0100 (CET) (envelope-from phk@phk.freebsd.dk) To: John Polstra From: "Poul-Henning Kamp" In-Reply-To: Your message of "Mon, 24 Nov 2003 13:09:39 PST." Date: Mon, 24 Nov 2003 22:30:58 +0100 Message-ID: <23528.1069709458@critter.freebsd.dk> cc: current@freebsd.org cc: Nate Lawson Subject: Re: PII SMP system hangs during boot with ACPI enabled X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Nov 2003 21:31:04 -0000 In message , John Polstra writes: >On 24-Nov-2003 Nate Lawson wrote: >> It's a long shot, but what about setting kern.timecounter.hardware to >> i8254. It appears your ACPI timer is bad. The reason why I suggest this >> is that it seems like interrupts are being lost. > >I put kern.timecounter.hardware="i8254" into /boot/loader.conf, but >it didn't make any difference. Are you sure it even works from >loader.conf? From the sources it looks like this is a sysctl rather >than a tunable. I could change it to a tunable, though, if you >think it's worthwhile. It would be rather complicated to make it a tunable. Far easier to go into the ACPI timecounter and just give it a negative quality, that will disable it. I'm not sure why Nate think this will change anything with respect to interrupts, but I pressume he knows what he's talking about. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.