From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from emea01-db3-obe.outbound.protection.outlook.com (mail-db3on0079.outbound.protection.outlook.com [157.55.234.79]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client CN "mail.protection.outlook.com", Issuer "MSIT Machine Auth CA 2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 89A4E21F5E5 for ; Fri, 5 Jun 2015 07:46:25 -0700 (PDT) Authentication-Results: lists.bufferbloat.net; dkim=none (message not signed) header.d=none; Received: from [IPv6:2001:470:183f:da2b::9b1c:6a15] (2001:470:183f:da2b::9b1c:6a15) by VI1PR07MB0944.eurprd07.prod.outlook.com (25.161.110.149) with Microsoft SMTP Server (TLS) id 15.1.184.17; Fri, 5 Jun 2015 14:46:21 +0000 Message-ID: <5571B636.8050908@darbyshire-bryant.me.uk> Date: Fri, 5 Jun 2015 15:46:14 +0100 From: Kevin Darbyshire-Bryant User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms020300050705030201010102" X-Originating-IP: [2001:470:183f:da2b::9b1c:6a15] X-ClientProxiedBy: HE1PR02CA0008.eurprd02.prod.outlook.com (25.162.33.18) To VI1PR07MB0944.eurprd07.prod.outlook.com (25.161.110.149) X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:VI1PR07MB0944; X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(601004)(520003)(5005006)(3002001); SRVR:VI1PR07MB0944; BCL:0; PCL:0; RULEID:; SRVR:VI1PR07MB0944; X-Forefront-PRVS: 05986C03E0 X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10009020)(6009001)(65956001)(83506001)(229853001)(5890100001)(46102003)(5000100001)(74482002)(59896002)(92566002)(33656002)(15975445007)(122386002)(50986999)(40100003)(512874002)(36756003)(87266999)(84326002)(5001960100002)(4001350100001)(110136002)(107886002)(568964001)(189998001)(86362001)(42186005)(62966003)(87976001)(450100001)(77156002)(54356999)(65816999)(19580395003)(2351001)(3826002); DIR:OUT; SFP:1101; SCL:1; SRVR:VI1PR07MB0944; H:[IPv6:2001:470:183f:da2b::9b1c:6a15]; FPR:; SPF:None; MLV:sfv; LANG:en; X-OriginatorOrg: darbyshire-bryant.me.uk X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jun 2015 14:46:21.9348 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR07MB0944 Subject: [Bloat] Remarkably simple bloat managing use by a UK ISP 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: Fri, 05 Jun 2015 14:46:54 -0000 --------------ms020300050705030201010102 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Hi Chaps, I was speaking with Andrews & Arnold (a UK clueful ISP) about their=20 experiences with bufferbloat and was sent this graph:=20 https://support.aa.net.uk/VMG1312:_QoS I was surprised at how such a simple 'priority by packet size' scheme=20 appears to work. Clearly there's slightly more going on in that the box = in question *knows* the outbound bandwidth and doesn't let a standing=20 queue form...but priority by packet size? Hmm. 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