From owner-freebsd-stable@FreeBSD.ORG  Mon Apr 25 23:45:16 2011
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 933DF106564A
	for <freebsd-stable@freebsd.org>; Mon, 25 Apr 2011 23:45:16 +0000 (UTC)
	(envelope-from freebsd@chillt.de)
Received: from dd16434.kasserver.com (dd16434.kasserver.com [85.13.137.111])
	by mx1.freebsd.org (Postfix) with ESMTP id 577848FC1B
	for <freebsd-stable@freebsd.org>; Mon, 25 Apr 2011 23:45:16 +0000 (UTC)
Received: from taiko.lan (ppp-197-43.21-151.libero.it [151.21.43.197])
	by dd16434.kasserver.com (Postfix) with ESMTPSA id 5DB30188606E;
	Tue, 26 Apr 2011 01:45:15 +0200 (CEST)
Message-ID: <4DB60759.1070906@chillt.de>
Date: Tue, 26 Apr 2011 01:44:25 +0200
From: Bartosz Fabianowski <freebsd@chillt.de>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US;
	rv:1.9.2.15) Gecko/20110309 Thunderbird/3.1.9
MIME-Version: 1.0
To: Alexandre Kovalenko <bsd.gaijin@gmail.com>
References: <BANLkTi=c3zxYeUqvmsHkyoD6MbXafkK-RA@mail.gmail.com>	<4DB5751B.2050903@chillt.de>
	<BANLkTimdmYUiukrR1F-jZCUD2dOwc5Jncg@mail.gmail.com>
In-Reply-To: <BANLkTimdmYUiukrR1F-jZCUD2dOwc5Jncg@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Cc: freebsd-stable@freebsd.org
Subject: Re: System extremely slow under light load
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: Mon, 25 Apr 2011 23:45:16 -0000

> Did you try to set OS override to any of the values, recognized by
> your BIOS, with most interesting being  "Windows 2001 SP2", "Windows
> 2006" and "Windows 2009".

Yes, I tried this a while ago, before messing with the DSDT. I figured 
it was unlikely that Dell shipped a DSDT which leads to 0°C readings 
under Windows. Alas, no OS override seemed to change anything. The CPU 
was running just as hot and the temperature reported by ACPI remained 
0°C. Now that I have tried Linux, I can confirm that there, too, the 
temperature is 0°C. The DSDT is completely broken.

>  Additionally, could you, by any chance, replace _TMP method in TZ01
> with the snippet below and let me know what the result is:

I am running with that change right now. It seems to have the same 
effect as my own fixes: hw.acpi.thermal.tz1.temperature works and 
returns a temperature that agrees with dev.cpu.X.temperature. No other 
obvious changes. All temperatures are still in the same ranges.

- Bartosz