From owner-freebsd-stable@FreeBSD.ORG Tue Nov 9 16:08:05 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2E486106566B for ; Tue, 9 Nov 2010 16:08:05 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 6F6898FC0C for ; Tue, 9 Nov 2010 16:08:04 +0000 (UTC) Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua [212.40.38.101]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id SAA27733; Tue, 09 Nov 2010 18:07:30 +0200 (EET) (envelope-from avg@icyb.net.ua) Message-ID: <4CD971C2.1010506@icyb.net.ua> Date: Tue, 09 Nov 2010 18:07:30 +0200 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.11) Gecko/20101021 Lightning/1.0b2 Thunderbird/3.1.5 MIME-Version: 1.0 To: Dan Allen References: <68E248E0-8619-4859-BFFE-1B5F5ABBC51F@airwired.net> <4CD11FE9.8050105@freebsd.org> <5224E1F5-4567-45A8-A12C-868F7B45BC21@airwired.net> <4CD42127.5070902@icyb.net.ua> <4CD8DC87.3090207@icyb.net.ua> <24FCCE4A-C7C2-4EDE-9521-3D562391ACE4@airwired.net> <4CD9648A.2080606@icyb.net.ua> <4CD967CB.5090201@icyb.net.ua> <817835F0-91C1-4945-917A-9C582C4FDFF6@airwired.net> In-Reply-To: <817835F0-91C1-4945-917A-9C582C4FDFF6@airwired.net> X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Sergey Kandaurov , FreeBSD-STABLE Mailing List Subject: Re: Fatal trap 18 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Nov 2010 16:08:05 -0000 on 09/11/2010 17:59 Dan Allen said the following: > > On 9 Nov 2010, at 8:24 AM, Andriy Gapon wrote: > >> on 09/11/2010 17:22 Dan Allen said the following: >>> >>> On 9 Nov 2010, at 8:11 AM, Andriy Gapon wrote: >>> >>>> /boot/loader.conf contents >>> >>> This might be the smoking gun! >>> >>> cat loader.conf: >>> >>> hint.apic.0.disabled="1" >> >> Yes, it is. >> So why do you have it and what happens if you remove it? > > Well, there is good news and bad news. > > The good news is that if I remove this hint the machine boots with 2 CPUs. > > The bad news is that I get lots of: > > CPU0: local APIC error 0x40 > CPU1: local APIC error 0x40 > > messages and the machine is very unresponsive. Every keystroke has a second or two of delay. It really is unusable. > > If memory serves I had to turn off APIC in order to see both CPUs at some time in the past. However, at some time in the past I had both CPUs and did not have the severe unresponsiveness that I get without this hint. > > So with APIC I get both CPUs but an unusable config. Without APIC I have one CPU but things are lively. > > What next? Let's see if anybody else can help you with that stuff. My jurisdiction (area of expertise) ends here. Verbose dmesg will be useful in any case. -- Andriy Gapon