From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from BAY004-OMC4S11.hotmail.com (bay004-omc4s11.hotmail.com [65.54.190.213]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id B23F03B2A3 for ; Fri, 3 Mar 2017 00:00:04 -0500 (EST) Received: from NAM03-DM3-obe.outbound.protection.outlook.com ([65.54.190.201]) by BAY004-OMC4S11.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.23008); Thu, 2 Mar 2017 21:00:03 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hotmail.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=022dQ/oaNSJl3BUzUuVbaWfdhAI8N7qVDBSFkl1RAWQ=; b=SJ3xh/PfzeBSuN9XscpxQdtcoE1mgl6Rbts9/JP/p8x2c28+CiTCmC2kMrAqMWEeFiN3WuNZ+FesRgDp3HnUWF0tQqrhe/HDny9THob5iHwJX9Kd1xFFPUu7SCAW/Aoi2tA2l8wf2gB7bpl/EoojydtOgjMbMce6TRsWbCNQuG4NEVYiGSDx7pr1rHxpdxxcIh2qTIb9oEHRK2C5Gugi1FjfVq8nMXcbZkrcZynxzlQbC3PkI1Of2U0m2yhralkXTaiyituJJhgAu3UHpBn1pi9xBOfiFmEWS+mfhfGGoRioO4zBQvLz5Vt8hDmJ1ZlriurhpSk5MrBDM+2Hkb6YTQ== Received: from CO1NAM03FT060.eop-NAM03.prod.protection.outlook.com (10.152.80.57) by CO1NAM03HT245.eop-NAM03.prod.protection.outlook.com (10.152.81.110) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.947.7; Fri, 3 Mar 2017 05:00:02 +0000 Received: from DM5PR11MB1564.namprd11.prod.outlook.com (10.152.80.58) by CO1NAM03FT060.mail.protection.outlook.com (10.152.81.16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.947.7 via Frontend Transport; Fri, 3 Mar 2017 05:00:02 +0000 Received: from DM5PR11MB1564.namprd11.prod.outlook.com ([10.172.37.20]) by DM5PR11MB1564.namprd11.prod.outlook.com ([10.172.37.20]) with mapi id 15.01.0947.015; Fri, 3 Mar 2017 05:00:01 +0000 From: Eric Luehrsen To: Jonathan Morton CC: John Yates , "cake@lists.bufferbloat.net" , "lede-dev@lists.infradead.org" , =?Windows-1252?Q?Dave_T=E4ht?= Thread-Topic: [LEDE-DEV] [Cake] Cake SQM killing my DIR-860L - was: [17.01] Kernel: bump to 4.4.51 Thread-Index: AQHSk7CcSJePnm8gj0qe+T+KkDHBD6GCO56AgABLAQCAAAFJAIAABrkA Date: Fri, 3 Mar 2017 05:00:01 +0000 Message-ID: References: <07479F0A-40DD-44E5-B67E-28117C7CF228@gmx.de> <1488400107.3610.1@smtp.autistici.org> <2B251BF1-C965-444D-A831-9981861E453E@gmx.de> <1488484262.16753.0@smtp.autistici.org> <98E899EF-5E66-42CC-88AA-79FA80A4F228@gmail.com> <2D2AE632-75BB-4DDE-B370-0996EFECF14B@gmail.com> In-Reply-To: <2D2AE632-75BB-4DDE-B370-0996EFECF14B@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: gmail.com; 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SFV:NSPM; SFS:(10019020)(98900014); DIR:OUT; SFP:1102; SCL:1; SRVR:CO1NAM03HT245; H:DM5PR11MB1564.namprd11.prod.outlook.com; FPR:; SPF:None; LANG:en; x-ms-office365-filtering-correlation-id: 3c5f94b3-bb2c-4ac5-2809-08d461f2258a x-microsoft-antispam: UriScan:; BCL:0; PCL:0; RULEID:(22001)(201702061074)(5061506573)(5061507331)(1603103135)(1603101448)(1601125254)(1701031045); SRVR:CO1NAM03HT245; x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(432015137)(444000031); SRVR:CO1NAM03HT245; BCL:0; PCL:0; RULEID:; SRVR:CO1NAM03HT245; x-forefront-prvs: 0235CBE7D0 spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="Windows-1252" Content-ID: <4E4F4012E91361489F88C9F157E6F655@namprd11.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: hotmail.com X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2017 05:00:01.6441 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1NAM03HT245 X-OriginalArrivalTime: 03 Mar 2017 05:00:03.0978 (UTC) FILETIME=[051886A0:01D293DB] X-Mailman-Approved-At: Mon, 06 Mar 2017 05:33:25 -0500 Subject: Re: [Cake] [LEDE-DEV] Cake SQM killing my DIR-860L - was: [17.01] Kernel: bump to 4.4.51 X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Mar 2017 05:00:05 -0000 On 03/02/2017 11:35 PM, Jonathan Morton wrote: >> On 3 Mar, 2017, at 06:31, Eric Luehrsen wrote= : >> >> Also with SQM you may not what idealized entropy in your queue >> distribution. It is desired by some to have host-connection fairness, >> and not so much interest in stream-type fairness. So overlap in a few >> hash "tags" may not be always such a bad thing depending on how it works >> itself out. > That sort of thing is explicitly catered for by the triple-isolate algori= thm. I don=92t want to rely on particular hash behaviour to achieve an inf= erior result. I=92d much rather have a good hash with maximal entropy. > > - Jonathan Morton That's not what I was going for. Agree, it would not be good to depend=20 on an inferior hash. You mentioned divide as a "cost." So I was=20 proposing a thought around a "benefit" estimate. If hash collisions are=20 not as important (or are they), then what is "benefit / cost?"