From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from emea01-db3-obe.outbound.protection.outlook.com (mail-db3on0053.outbound.protection.outlook.com [157.55.234.53]) (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 D11D121F3E0 for ; Fri, 15 May 2015 01:16:17 -0700 (PDT) Authentication-Results: lists.bufferbloat.net; dkim=none (message not signed) header.d=none; Received: from [IPv6:2001:470:1f1d:18a::717c:e11c] (2001:470:1f1d:18a::717c:e11c) by HE1PR07MB0937.eurprd07.prod.outlook.com (25.162.27.143) with Microsoft SMTP Server (TLS) id 15.1.160.19; Fri, 15 May 2015 08:16:12 +0000 Message-ID: <5555AB46.5010508@darbyshire-bryant.me.uk> Date: Fri, 15 May 2015 09:16:06 +0100 From: Kevin Darbyshire-Bryant User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Dave Taht References: <55552014.2010808@darbyshire-bryant.me.uk> In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms070209090500000003030906" X-Originating-IP: [2001:470:1f1d:18a::717c:e11c] X-ClientProxiedBy: DB5PR09CA0032.eurprd09.prod.outlook.com (25.161.191.42) To HE1PR07MB0937.eurprd07.prod.outlook.com (25.162.27.143) X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:HE1PR07MB0937; X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(601004)(5005006)(3002001); SRVR:HE1PR07MB0937; BCL:0; PCL:0; RULEID:; SRVR:HE1PR07MB0937; X-Forefront-PRVS: 0577AD41D6 X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10009020)(6009001)(51704005)(164054003)(24454002)(377454003)(479174004)(65956001)(87976001)(512874002)(42186005)(2950100001)(40100003)(77156002)(62966003)(1720100001)(15975445007)(92566002)(59896002)(46102003)(74482002)(122386002)(33656002)(65816999)(86362001)(5001960100002)(110136002)(5890100001)(83506001)(80316001)(19580405001)(19580395003)(50986999)(87266999)(54356999)(76176999)(84326002)(189998001)(4001350100001)(568964001)(36756003)(3826002); DIR:OUT; SFP:1101; SCL:1; SRVR:HE1PR07MB0937; H:[IPv6:2001:470:1f1d:18a::717c:e11c]; FPR:; SPF:None; MLV:sfv; LANG:en; X-OriginatorOrg: darbyshire-bryant.me.uk X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 May 2015 08:16:12.8961 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR07MB0937 Cc: bloat Subject: Re: [Bloat] tc -s qdisc questions 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, 15 May 2015 08:16:46 -0000 --------------ms070209090500000003030906 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 15/05/2015 00:41, Dave Taht wrote: > On Thu, May 14, 2015 at 3:22 PM, Kevin Darbyshire-Bryant > wrote: >> Hi Chaps, >> >> Further to Dave's recent request for 'tc -s qdisc' stats looking at dr= ops vs >> ecn marks, please could someone take a look at these and explain to th= is >> idiot quite what is going on? This is a particularly slow & ratty ADS= L line >> providing my parents internet 'service'. Before I got hold of it with= >> OpenWrt CC trunk + cake jammed in it, 6 seconds of bufferbloat was not= >> uncommon. I'm using the default sqm scripts that arrive with the >> 'ceropackages' repo (used as a source of patched iproute2, cake, etc) = In >> essence 2 questions: 1) Why no ECN marks, only drops? > http://www.bufferbloat.net/projects/cerowrt/wiki/Enable_ECN > Ahh! Penny drops, light goes on. Thanks Jonathan & Dave. I thought it = was some magic the router performed but now I can see how silly my thinki= ng is on that. So presumably it would be helpful to enable ecn on the op= enwrt router box IF that box were producing significant traffic of its ow= n, in addition to all the LAN side boxes? --=20 Thanks, Kevin@Darbyshire-Bryant.me.uk Theresa May is watching YOU on the internet. 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