From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-13-ewr.dyndns.com (mxout-065-ewr.mailhop.org [216.146.33.65]) by lists.bufferbloat.net (Postfix) with ESMTP id 371812E06E4 for ; Wed, 6 Apr 2011 05:02:12 -0700 (PDT) Received: from scan-11-ewr.mailhop.org (scan-11-ewr.local [10.0.141.229]) by mail-13-ewr.dyndns.com (Postfix) with ESMTP id 65315A4B59B for ; Wed, 6 Apr 2011 12:02:11 +0000 (UTC) X-Spam-Score: 0.0 () X-Mail-Handler: MailHop by DynDNS X-Originating-IP: 149.20.54.64 Received: from mainmail.teklibre.com (toutatis.isc.org [149.20.54.64]) by mail-13-ewr.dyndns.com (Postfix) with ESMTP id CCE9CA4B302 for ; Wed, 6 Apr 2011 12:02:07 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mainmail.teklibre.com (Postfix) with ESMTP id 2523812B756 for ; Wed, 6 Apr 2011 05:35:58 -0700 (PDT) Received: from mainmail.teklibre.com ([127.0.0.1]) by localhost (toutatis.sql1.isc.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XzGFlHkrv-un for ; Wed, 6 Apr 2011 05:35:57 -0700 (PDT) Received: from [172.16.1.75] (unknown [173.160.71.76]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: d) by mainmail.teklibre.com (Postfix) with ESMTPSA id 99B8812B6AB for ; Wed, 6 Apr 2011 05:35:57 -0700 (PDT) Message-ID: <4D9C563C.4030206@taht.net> Date: Wed, 06 Apr 2011 06:02:04 -0600 From: Dave Taht User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110223 Thunderbird/3.1.8 MIME-Version: 1.0 To: bismark-users@lists.bufferbloat.net Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: [Bismark-users] issues with slow-start. X-BeenThere: bismark-users@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Apr 2011 12:02:12 -0000 The traces I took (of connecting to youtube) during yesterday's meeting at gatech were interesting. Most of the problems with dropped packets, and reordering, I saw, appeared to occur during slow start!?!?? Here's an example: http://www.teklibre.com/~d/captures/earlytrace.png WTF? My thought is that there is either something wrong with my box, or the shapers you are using, or the wireless interface(s) I was connected to. Usually what I see is chaos AFTER a few seconds, not during slow start. (It's an otherwise normal tcp trace after it ramps up) I'd like to re-run those tests using a few different interfaces and laptops to gain more insight into the problem. Also somewhat related to this is if that if any other group(s) want some insight into the bufferbloat issue, I'm here, I have jg's slides, I can talk to it for an hour... And similarly having at least one representative from the other group we met with yesterday on this list and the website would be good.