From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-x232.google.com (mail-ob0-x232.google.com [IPv6:2607:f8b0:4003:c01::232]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id CE30221F43C for ; Fri, 20 Feb 2015 01:21:14 -0800 (PST) Received: by mail-ob0-f178.google.com with SMTP id uz6so22942379obc.9 for ; Fri, 20 Feb 2015 01:21:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; bh=doJkTrWpsUMhWp7ahE/qyXmBTxICcOE9u+bs65v2cmg=; b=m72RIO94emT4QBk1MZWP3YtVOkIZl/DfZev+jD83/UWyczgdRu9dHSupRzyNCp01yi kC6gbUHfnEMImoA++/nOgQIqXQqorZyMNK8H9tOKVydQdBb922j12k1+1V0SnTbBmXdN bVL4OjucgQtGk7CHiM50+Bte3WxTCIyliD5yjEABsRdlW72RX29Jcrw0gIWSDhu8Z13b rUrPIphyzciaUYgvVjAk75rWH68f7XMnoVI5jCdbGH4A3u4fdlPhWVGwJuR4VhxQmxSB MyOq0gLBt/d+hCgwpjz53BsOaZrSkKW9G4qf04FDwk9Z/w9rji4OC/27r23a5otJwPgk RFng== MIME-Version: 1.0 X-Received: by 10.60.103.234 with SMTP id fz10mr5887528oeb.11.1424424073717; Fri, 20 Feb 2015 01:21:13 -0800 (PST) Received: by 10.202.51.66 with HTTP; Fri, 20 Feb 2015 01:21:13 -0800 (PST) In-Reply-To: References: Date: Fri, 20 Feb 2015 01:21:13 -0800 Message-ID: From: Dave Taht To: Anjali Chawla Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: "codel@lists.bufferbloat.net" Subject: Re: [Codel] Setpoint in CoDel X-BeenThere: codel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: CoDel AQM discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Feb 2015 09:21:43 -0000 the best talk on the subject was van=C2=B4s at ietf, it is well worth watching multiple times. http://www.bufferbloat.net/projects/cerowrt/wiki/Bloat-videos He goes deeply into the reasoning behind the sojourn time, and setpoint. About the only other somewhat in-depth talk on how codel really works was my attempt at stanford. and there are of course other talks above that try to describe bits of the elephant. One of these days I hope someone puts together the definitive talk on codel complete with even more elegant demos than stephen hemminger came up with..., but it does seem to be really hard for people to get at a deep level... most of my own talks are more about fq than fq_codel, and that is *tons* easier to explain. If you watch them all a bunch of times, and run a few experiments of your own, enlightenment will come. For me, it was seeing kathie give the first public explanation of codel - about midway through I started vibrating in my seat - but I had just completed a slash and burn tour through all the aqm literature going back 30 years, and trying everything that seemed to make sense. I don=C2=B4t know how to impart that in an email... On Fri, Feb 20, 2015 at 12:46 AM, Anjali Chawla wrote: > Hi > anyone please explain me what is concept behind setpoint in codel > algorithm?? > Thanks > > _______________________________________________ > Codel mailing list > Codel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/codel > --=20 Dave T=C3=A4ht thttp://www.bufferbloat.net/projects/bloat/wiki/Upcoming_Talks