From owner-freebsd-performance@FreeBSD.ORG  Sat Apr  7 06:00:56 2012
Return-Path: <owner-freebsd-performance@FreeBSD.ORG>
Delivered-To: freebsd-performance@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id CE2A8106567C;
	Sat,  7 Apr 2012 06:00:56 +0000 (UTC)
	(envelope-from ndenev@gmail.com)
Received: from mail-wg0-f50.google.com (mail-wg0-f50.google.com [74.125.82.50])
	by mx1.freebsd.org (Postfix) with ESMTP id 2F1958FC12;
	Sat,  7 Apr 2012 06:00:56 +0000 (UTC)
Received: by wgbds12 with SMTP id ds12so2673042wgb.31
	for <multiple recipients>; Fri, 06 Apr 2012 23:00:55 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
	h=subject:mime-version:content-type:from:in-reply-to:date:cc
	:content-transfer-encoding:message-id:references:to:x-mailer;
	bh=xYYzQckSuIme8bCQ/iDHIJoD8CJu2Ab/Zfe+4F2C+Lg=;
	b=m/EuCTO+cXpS/cd1rqtcIMupRLGaE4azPXanhT5lqUUXxJVRW1wOinYeySjDwdotg9
	q0uZJFLAs5pSIUarTg02PM2fk+V8+VOQXNk04QVBGjnHr5sR8HKyBD+8uzJ/bTji6J0A
	wp5idFmRKEZUFcYiPIiOD/gkdizztd7SfQ7KnINZTW3tWNkCt+D+lBt3Uu1aFgj6G9mB
	3H2y8lxkDzmV+xMMlLDj4Woxj+zC0jhivTMw9Q8/phpURxDQbUGMLr5Qd6j15R5Iwv0R
	glUGlKUwlnwLj6T+lllYIZS9gliURzOGew1omplmRACeLzmnCxo3n/kORbM9LYcTKTd1
	KtyQ==
Received: by 10.216.134.136 with SMTP id s8mr309358wei.6.1333778455324;
	Fri, 06 Apr 2012 23:00:55 -0700 (PDT)
Received: from imba-brutale.totalterror.net ([93.152.152.135])
	by mx.google.com with ESMTPS id ff2sm19747422wib.9.2012.04.06.23.00.53
	(version=TLSv1/SSLv3 cipher=OTHER);
	Fri, 06 Apr 2012 23:00:54 -0700 (PDT)
Mime-Version: 1.0 (Apple Message framework v1257)
Content-Type: text/plain; charset=us-ascii
From: Nikolay Denev <ndenev@gmail.com>
In-Reply-To: <4F7ED7F4.5060509@zedat.fu-berlin.de>
Date: Sat, 7 Apr 2012 09:00:51 +0300
Content-Transfer-Encoding: quoted-printable
Message-Id: <687BFFD7-1456-4D7B-AFB2-356EE9B0D1DD@gmail.com>
References: <4F7ED7F4.5060509@zedat.fu-berlin.de>
To: O. Hartmann <ohartman@zedat.fu-berlin.de>
X-Mailer: Apple Mail (2.1257)
X-Mailman-Approved-At: Sat, 07 Apr 2012 10:54:53 +0000
Cc: freebsd-performance@freebsd.org,
	Current FreeBSD <freebsd-current@freebsd.org>
Subject: Re: ECC memory driver in FreeBSD 10?
X-BeenThere: freebsd-performance@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Performance/tuning <freebsd-performance.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>,
	<mailto:freebsd-performance-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-performance>
List-Post: <mailto:freebsd-performance@freebsd.org>
List-Help: <mailto:freebsd-performance-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>,
	<mailto:freebsd-performance-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 07 Apr 2012 06:00:56 -0000

On Apr 6, 2012, at 2:48 PM, O. Hartmann wrote:

> I'm looking for a way to force FreeBSD 10 to maintain/watch ECC errors
> reported by UEFI (or BIOS).
> Since ECC is said to be essential for server systems both in buisness
> and science and I do not question this, I was wondering if I can not
> report ECC errors via a watchdog or UEFI (ACPI?) report to syslog
> facility on FreeBSD.
> FreeBSD is supposed to be a server operating system, as far as I know,
> so I believe there must be something which didn't have revealed itself
> to me, yet.
>=20
> Thanks in advance,
> Oliver
>=20

If the hardware supports it, such errors should be logged as MCEs =
(Machine Check Exceptions).
I can say for sure it works pretty well with Dell servers, as I had  one =
with failing RAM module, and
it reported the corrected ECC errors in dmesg.