From owner-freebsd-stable@FreeBSD.ORG  Tue Nov  9 15:59:34 2010
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
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 3437B106564A
	for <freebsd-stable@freebsd.org>; Tue,  9 Nov 2010 15:59:34 +0000 (UTC)
	(envelope-from danallen46@airwired.net)
Received: from mail.utahbroadband.com (mail.utahbroadband.com [204.14.20.91])
	by mx1.freebsd.org (Postfix) with ESMTP id E720C8FC0A
	for <freebsd-stable@freebsd.org>; Tue,  9 Nov 2010 15:59:33 +0000 (UTC)
Received: (qmail 7360 invoked by uid 89); 9 Nov 2010 15:59:33 -0000
Received: from unknown (HELO ?192.168.0.18?)
	(danallen46@airwired.net@66.29.174.6)
	by mail.utahbroadband.com with ESMTPA; 9 Nov 2010 15:59:33 -0000
Mime-Version: 1.0 (Apple Message framework v1081)
Content-Type: text/plain; charset=us-ascii
From: Dan Allen <danallen46@airwired.net>
In-Reply-To: <4CD967CB.5090201@icyb.net.ua>
Date: Tue, 9 Nov 2010 08:59:31 -0700
Content-Transfer-Encoding: quoted-printable
Message-Id: <817835F0-91C1-4945-917A-9C582C4FDFF6@airwired.net>
References: <68E248E0-8619-4859-BFFE-1B5F5ABBC51F@airwired.net>
	<AANLkTik0=x6h3YK0F_yrRJ_MGHp9pf8dVubbEwpmAa1y@mail.gmail.com>
	<4CD11FE9.8050105@freebsd.org>
	<5224E1F5-4567-45A8-A12C-868F7B45BC21@airwired.net>
	<4CD42127.5070902@icyb.net.ua>
	<F151FEC5-A9E3-408F-B29E-9ED18F45FE24@airwired.net>
	<4CD8DC87.3090207@icyb.net.ua>
	<24FCCE4A-C7C2-4EDE-9521-3D562391ACE4@airwired.net>
	<4CD9648A.2080606@icyb.net.ua>
	<CB71FE79-F1BE-4134-8536-70EA12A60F8C@airwired.net>
	<4CD967CB.5090201@icyb.net.ua>
To: Andriy Gapon <avg@icyb.net.ua>
X-Mailer: Apple Mail (2.1081)
Cc: Sergey Kandaurov <pluknet@gmail.com>,
	FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>
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 <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 09 Nov 2010 15:59:34 -0000


On 9 Nov 2010, at 8:24 AM, Andriy Gapon wrote:

> on 09/11/2010 17:22 Dan Allen said the following:
>>=20
>> On 9 Nov 2010, at 8:11 AM, Andriy Gapon wrote:
>>=20
>>> /boot/loader.conf contents
>>=20
>> This might be the smoking gun!
>>=20
>> cat loader.conf:
>>=20
>> 	hint.apic.0.disabled=3D"1"
>=20
> 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?

Dan