From owner-freebsd-xen@FreeBSD.ORG  Thu Jan 10 12:56:20 2013
Return-Path: <owner-freebsd-xen@FreeBSD.ORG>
Delivered-To: freebsd-xen@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by hub.freebsd.org (Postfix) with ESMTP id 78DA1988
 for <freebsd-xen@freebsd.org>; Thu, 10 Jan 2013 12:56:20 +0000 (UTC)
 (envelope-from feld@feld.me)
Received: from feld.me (feld.me [66.170.3.2])
 by mx1.freebsd.org (Postfix) with ESMTP id 56A4CCC5
 for <freebsd-xen@freebsd.org>; Thu, 10 Jan 2013 12:56:20 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=feld.me;
 s=blargle; 
 h=Content-Transfer-Encoding:Content-Type:Mime-Version:References:In-Reply-To:Message-Id:Subject:Cc:To:From:Date;
 bh=F+dKGL6RnLbPGfz/bgxFcdvKvVGeIaVsQPqEWWPl96g=; 
 b=Hn2fkFXGr1PlLhhusgBMFFg8oKjdI79AKsTFTBoWrrciMqY75YE6mXjYcts9ofKn6+0Ko4INRP7XD1GXLJWCPuEMjQ7X9r6XCUxni+TgUEuoVhVgP56D+5DSA3giHf//;
Received: from localhost ([127.0.0.1] helo=mwi1.coffeenet.org)
 by feld.me with esmtp (Exim 4.80.1 (FreeBSD))
 (envelope-from <feld@feld.me>)
 id 1TtHg9-000E0B-3Q; Thu, 10 Jan 2013 06:56:17 -0600
Received: from feld@feld.me by mwi1.coffeenet.org (Archiveopteryx 3.1.4)
 with esmtpsa id 1357822571-49025-49023/5/1; Thu, 10 Jan 2013 12:56:11
 +0000
Date: Thu, 10 Jan 2013 06:56:11 -0600
From: Mark Felder <feld@feld.me>
To: moto kawasaki <moto@kawasaki3.org>
Subject: Re: 9.1R?
Message-Id: <20130110065611.03e66265@tech304.office.supranet.net>
In-Reply-To: <20121223.183654.1876624675013089283.moto@kawasaki3.org>
References: <000301cddfa8$b6af8b70$240ea250$@ezwind.net>
 <20121222012933.5694d482@tech304>
 <20121223.183654.1876624675013089283.moto@kawasaki3.org>
X-Mailer: Claws Mail 3.9.0 (GTK+ 2.24.6; amd64-portbld-freebsd9.0)
Mime-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable
X-SA-Report: ALL_TRUSTED=-1, KHOP_THREADED=-0.5
X-SA-Score: -1.5
Cc: freebsd-xen@freebsd.org
X-BeenThere: freebsd-xen@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Discussion of the freebsd port to xen - implementation and usage
 <freebsd-xen.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-xen>,
 <mailto:freebsd-xen-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-xen>
List-Post: <mailto:freebsd-xen@freebsd.org>
List-Help: <mailto:freebsd-xen-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-xen>,
 <mailto:freebsd-xen-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 10 Jan 2013 12:56:20 -0000

On Sun, 23 Dec 2012 18:36:54 +0900
moto kawasaki <moto@kawasaki3.org> wrote:

> It might be better to disable rxcsum, txcsum, and lro, too.
> My understanding is the point is the 'NIC hardware' is not the real
> one but emulation by Xen Host, so that those 'off loading' makes
> context switch storm between domU and dom0.
> # please kindly correct me if wrong.

You're actually quite correct as this is a source of network problems on =
many different domU OSes.