From owner-freebsd-stable@FreeBSD.ORG Thu Feb 25 12:57:38 2010 Return-Path: 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 A5524106566B for ; Thu, 25 Feb 2010 12:57:38 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from qmta04.emeryville.ca.mail.comcast.net (qmta04.emeryville.ca.mail.comcast.net [76.96.30.40]) by mx1.freebsd.org (Postfix) with ESMTP id 866218FC15 for ; Thu, 25 Feb 2010 12:57:38 +0000 (UTC) Received: from omta15.emeryville.ca.mail.comcast.net ([76.96.30.71]) by qmta04.emeryville.ca.mail.comcast.net with comcast id mCr31d0051Y3wxoA4Cxe2V; Thu, 25 Feb 2010 12:57:38 +0000 Received: from koitsu.dyndns.org ([98.248.46.159]) by omta15.emeryville.ca.mail.comcast.net with comcast id mCxe1d0043S48mS8bCxegl; Thu, 25 Feb 2010 12:57:38 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id 30B311E301A; Thu, 25 Feb 2010 04:57:37 -0800 (PST) Resent-From: Jeremy Chadwick Resent-Date: Thu, 25 Feb 2010 04:57:37 -0800 Resent-Message-ID: <20100225125737.GA89503@icarus.home.lan> Resent-To: freebsd-stable@freebsd.org Date: Thu, 25 Feb 2010 04:57:15 -0800 From: Jeremy Chadwick To: Harald Schmalzbauer Message-ID: <20100225125715.GA89451@icarus.home.lan> References: <20100218192320.B34251CC09@ptavv.es.net> <4B7DB408.9010706@omnilan.de> <20100219095539.GD14413@asgard.cs.uoi.gr> <20100224153703.GA11729@asgard.cs.uoi.gr> <4B863CC5.80906@omnilan.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4B863CC5.80906@omnilan.de> User-Agent: Mutt/1.5.20 (2009-06-14) Cc: Subject: Re: RELENG_8 ignoring TCP window size? [Was: Re: Help for TCP understanding wanted, ACK-MSS-Window [Was: Re: best practice to watch TCP parms of established sockets]] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Feb 2010 12:57:38 -0000 On Thu, Feb 25, 2010 at 10:03:01AM +0100, Harald Schmalzbauer wrote: > Since I could only capture "bad IP length" packets with checsum > offloading enabled on the em, I guess it does also IP checksum > offloading, not only TCP. I'll have to set up a port mirroring test > bed to get the line packets. I hope I'll find the rfc1323 slowdown > and the difference between FreeBSD clients and Windows clients. But > at the moment I don't have spare equipment. Worth pointing out: the version of Windows you're testing with matters greatly. RFC1323 isn't enabled by default in some versions of Windows, and in other versions the default/min/max window sizes on Windows are set absurdly small. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |