From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from emea01-am1-obe.outbound.protection.outlook.com (mail-am1on0064.outbound.protection.outlook.com [157.56.112.64]) (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 20C0521F60D for ; Fri, 5 Jun 2015 10:20:35 -0700 (PDT) Authentication-Results: lists.bufferbloat.net; dkim=none (message not signed) header.d=none; Received: from [IPv6:2001:470:183f:da2b::717c:e11c] (2001:470:183f:da2b::717c:e11c) by DB5PR07MB0936.eurprd07.prod.outlook.com (25.161.200.143) with Microsoft SMTP Server (TLS) id 15.1.172.22; Fri, 5 Jun 2015 17:20:32 +0000 Message-ID: <5571DA4E.5060809@darbyshire-bryant.me.uk> Date: Fri, 5 Jun 2015 18:20:14 +0100 From: Kevin Darbyshire-Bryant User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Dave Taht References: <7D4DDC3F-9233-4E07-B59B-AA1368CA9D4E@gmail.com> <5571B334.7050607@darbyshire-bryant.me.uk> In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Sl1paAQNBqT0u9HQhoNJjpr6wdimQ0Tai" X-Originating-IP: [2001:470:183f:da2b::717c:e11c] X-ClientProxiedBy: HE1PR02CA0032.eurprd02.prod.outlook.com (25.162.33.42) To DB5PR07MB0936.eurprd07.prod.outlook.com (25.161.200.143) X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:DB5PR07MB0936; X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(601004)(5005006)(520003)(3002001); SRVR:DB5PR07MB0936; BCL:0; PCL:0; RULEID:; SRVR:DB5PR07MB0936; X-Forefront-PRVS: 05986C03E0 X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10009020)(6009001)(479174004)(377454003)(24454002)(51704005)(62966003)(77156002)(83506001)(40100003)(19580395003)(65816999)(84326002)(19580405001)(42186005)(59896002)(33656002)(122386002)(80316001)(46102003)(74482002)(65956001)(76176999)(231993002)(65806001)(50986999)(54356999)(86362001)(5890100001)(87976001)(512874002)(4810100001)(92566002)(36756003)(5001920100001)(110136002)(2950100001)(5001960100002)(15975445007)(93886004)(568964001)(4001350100001)(64126003)(189998001)(3826002); DIR:OUT; SFP:1101; SCL:1; SRVR:DB5PR07MB0936; H:[IPv6:2001:470:183f:da2b::717c:e11c]; FPR:; SPF:None; MLV:sfv; LANG:en; X-OriginatorOrg: darbyshire-bryant.me.uk X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jun 2015 17:20:32.3225 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB5PR07MB0936 Cc: bloat Subject: Re: [Bloat] Bloat goes away, but with ~25% speed loss? 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 17:21:04 -0000 --Sl1paAQNBqT0u9HQhoNJjpr6wdimQ0Tai Content-Type: multipart/mixed; boundary="------------060803000207020604000001" This is a multi-part message in MIME format. --------------060803000207020604000001 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 05/06/2015 17:19, Dave Taht wrote: > On Fri, Jun 5, 2015 at 7:33 AM, Kevin Darbyshire-Bryant > wrote: >> >> On 04/06/15 21:01, Jonathan Morton wrote: >> >> A useful exercise might be to log the idle latency over a long period = of >> time, and correlate it to peak load periods, as A&A do. >> http://aa.net.uk/kb-broadband-cqm.html . >> >> Minor claim to 'infamy'. The line graph shown on that page is my ADSL= line >> from 4ish years ago :-) I was having a hell of a time trying to convi= nce BT >> to solve the packet loss issue caused by a faulty PSU in a satellite >> receiver (one whole street away and affecting a LOT of people) Andrew= s & >> Arnold (ISP) were the only people capable of hitting BT with a suffici= ently >> large cluebat. > A&A struck me as an extremely clueful ISP (I think they have had ipv6 > /48s for forever?) > and it has been my impression that folk like that were using things > like HFSC + SFQ already > in their "rate limiters", and had experimented also with fq_codel by no= w. Adrian Kennard the owner writes code for their ISP grade routers etc (Fir= ebricks). Very clever chap. And yes very early adopters and promoters o= f IPv6. No idea what qdiscs etc they've experimented with. I'll try to = ask. 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