From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ey0-f171.google.com (mail-ey0-f171.google.com [209.85.215.171]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 2552020061F for ; Tue, 11 Oct 2011 06:09:14 -0700 (PDT) Received: by eyb6 with SMTP id 6so3845572eyb.16 for ; Tue, 11 Oct 2011 06:09:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:date:from:organization:user-agent:mime-version:to :subject:references:in-reply-to:content-type; bh=NndlbbzzA3IykqL72xjryADBUEPXrWPA8lLw0c0KdP8=; b=jLC74jO+q5rEcKk0S2niRKyhYlu1HI8iCJ2HoXB4EEZGC6WQqwI3eskGsedwnwa69Z eyjP2Nz8oUyJHy9BqNxhwMRBu16Agab8fU4gPRblnFEUUwaJtvVBBExY9Z1mNl2qgahU OejkIxAwUaxadI2pln+ZKbvBBIjOQIR4Kjmn8= Received: by 10.213.4.135 with SMTP id 7mr276525ebr.35.1318338553153; Tue, 11 Oct 2011 06:09:13 -0700 (PDT) Received: from [192.168.0.63] (lincs-gw.enst.fr. [137.194.164.55]) by mx.google.com with ESMTPS id t2sm48721079eef.10.2011.10.11.06.09.12 (version=SSLv3 cipher=OTHER); Tue, 11 Oct 2011 06:09:12 -0700 (PDT) Message-ID: <4E943FF7.5020208@gmail.com> Date: Tue, 11 Oct 2011 15:09:11 +0200 From: =?UTF-8?B?RGF2aWQgVMOkaHQ=?= Organization: Bufferbloat.net User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110922 Thunderbird/3.1.15 MIME-Version: 1.0 To: bloat@lists.bufferbloat.net, eric.dumazet@gmail.com References: <4E941A05.2050705@gmail.com> <20111011115816.GA24956@uio.no> <1318335234.2538.9.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <1318335509.2538.11.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> In-Reply-To: <1318335509.2538.11.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> Content-Type: multipart/mixed; boundary="------------020005050907060403090202" Subject: [Bloat] the observed sack oddity X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Oct 2011 13:09:15 -0000 This is a multi-part message in MIME format. --------------020005050907060403090202 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit I have put up screenshots of tcptrace -G and xplot.org's analysis of my most recent capture of an ipv6 connection over freebox (wired) from a debloat-testing kernel here in france (pre 3.1 by a lot) to a 2.6.16 kernel (the aformentioned netsonar box) in redwood city, ca, both running tcp cubic, over ipv6. at first glance, it looked a lot like a classic bufferbloat trace, with complete with periodic collapses and cubic increasing the window. Then I noticed the sacks. I also have a trace taken between the debloat-testing box and a cerowrt box (running linux 3.04), both running westwood, which shows considerably less undesirable behavior, and I will repeat that test with cubic this evening and post additional data tomorrow morning. -- Dave Täht --------------020005050907060403090202 Content-Type: text/x-vcard; charset=utf-8; name="dave_taht.vcf" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="dave_taht.vcf" YmVnaW46dmNhcmQNCmZuO3F1b3RlZC1wcmludGFibGU6RGF2ZSBUPUMzPUE0aHQNCm47cXVv dGVkLXByaW50YWJsZTpUPUMzPUE0aHQ7RGF2ZQ0KZW1haWw7aW50ZXJuZXQ6ZGF2ZS50YWh0 QGdtYWlsLmNvbQ0KdGVsO2hvbWU6MS0yMzktODI5LTU2MDgNCnRlbDtjZWxsOjA2Mzg2NDUz NzQNCngtbW96aWxsYS1odG1sOkZBTFNFDQp2ZXJzaW9uOjIuMQ0KZW5kOnZjYXJkDQoNCg== --------------020005050907060403090202--