From owner-freebsd-net@FreeBSD.ORG  Fri Dec 24 23:21:11 2010
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 1CB71106564A;
	Fri, 24 Dec 2010 23:21:11 +0000 (UTC)
	(envelope-from ivoras@gmail.com)
Received: from mail-qw0-f54.google.com (mail-qw0-f54.google.com
	[209.85.216.54])
	by mx1.freebsd.org (Postfix) with ESMTP id AE7598FC0A;
	Fri, 24 Dec 2010 23:21:10 +0000 (UTC)
Received: by qwj9 with SMTP id 9so7138305qwj.13
	for <multiple recipients>; Fri, 24 Dec 2010 15:21:09 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:received:mime-version:sender:received
	:in-reply-to:references:from:date:x-google-sender-auth:message-id
	:subject:to:cc:content-type:content-transfer-encoding;
	bh=hL+ACW00U2D5STmjwAGOtnAKP21h3hqvQzQ/jfjjFtM=;
	b=mEfN1vvUjHHc1gymt5Nzi33tUujDu7XmioVC9JPbkhVZU6TGGLr25SiuTI0jDzCnYt
	JH/Zz1CWxhkR0TpAxqgmZb6PQGr5fh0QUwKAqEDzuMBfhPRTFM7mSyvtIliU8LSLyubp
	R3z4hc1dDGfdTpDBbN0L3Crmn50HINbplDAJ0=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=mime-version:sender:in-reply-to:references:from:date
	:x-google-sender-auth:message-id:subject:to:cc:content-type
	:content-transfer-encoding;
	b=XGv217BbMA0SQH3G1ACAMyOWPPu7rDpyRsZDibONTjRWosfGtrzpK1QWdbo+IAGwaC
	QFyx0h5rxIrjXVcvbGgLVqobH9WTy8CErw3bA8m/HOlmFiqhUnWaRnumnmjgCedTE9Hu
	fwS7Q1a+EJrHrNXY1Tbi5mzb+Nq9L1KkMkIiA=
Received: by 10.229.246.79 with SMTP id lx15mr8919094qcb.25.1293232869620;
	Fri, 24 Dec 2010 15:21:09 -0800 (PST)
MIME-Version: 1.0
Sender: ivoras@gmail.com
Received: by 10.229.44.70 with HTTP; Fri, 24 Dec 2010 15:20:29 -0800 (PST)
In-Reply-To: <AANLkTinO1yfN--_K63-yD1LY3wusOF7wB2wwG8DUd5Z4@mail.gmail.com>
References: <icgd44$89l$1@dough.gmane.org>
	<1290533941.3173.50.camel@home-yahoo> <4CEC0548.1080801@sentex.net>
	<AANLkTim82pWyf_X+u72uj8RkWeRUb_4KSQ8B_HpNYsP9@mail.gmail.com>
	<AANLkTinO1yfN--_K63-yD1LY3wusOF7wB2wwG8DUd5Z4@mail.gmail.com>
From: Ivan Voras <ivoras@freebsd.org>
Date: Sat, 25 Dec 2010 00:20:29 +0100
X-Google-Sender-Auth: pChvIQdtL9ObqcF2JY0tCu4zJ6A
Message-ID: <AANLkTi=hrSgy-Q=OQJJrYT6VPOCOMNuYQUC_WKPX-fpR@mail.gmail.com>
To: Jan Koum <jan@whatsapp.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
	"freebsd-hardware@freebsd.org" <freebsd-hardware@freebsd.org>,
	Jack Vogel <jfvogel@gmail.com>, Mike Tancsa <mike@sentex.net>
Subject: Re: em driver, 82574L chip, and possibly ASPM
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 24 Dec 2010 23:21:11 -0000

On 24 December 2010 23:44, Jan Koum <jan@whatsapp.com> wrote:
>
> hi Ivan and Mike,
> wanted to follow up and see if you found a solid long-term solution to th=
is
> bug.=C2=A0we are still seeing this problem in our 8.2 environment with AS=
PM
> already disabled. =C2=A0here is what we have:

Hi,

The patches Jack made when this discussion was ongoing helped both me
and AFAIK Mike also. The machine I had which exhibited these problems
now works fine and stable. The patches should have been MFCed, but
just in case - try the version from 9-current.

During testing, I've also found that the BIOS setting "Remap PCI
memory" or "Remap device memory" or something like that (I can't look
it up now) also helps if disabled. Mike AFAIK didn't have this setting
in his machine's BIOS.