From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.17.22]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mout.gmx.net", Issuer "TeleSec ServerPass DE-1" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 992BA21F1B9 for ; Sun, 20 Apr 2014 13:35:39 -0700 (PDT) Received: from hms-beagle.home.lan ([217.86.120.237]) by mail.gmx.com (mrgmx001) with ESMTPSA (Nemesis) id 0MYOY5-1WP6JS20xt-00V5gk; Sun, 20 Apr 2014 22:35:35 +0200 Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 6.6 \(1510\)) From: Sebastian Moeller In-Reply-To: Date: Sun, 20 Apr 2014 22:35:34 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <98DC32C6-A0C7-4504-91E0-8CF01F223B80@gmx.de> References: <1397924468.489728228@apps.rackspace.com> To: Dave Taht X-Mailer: Apple Mail (2.1510) X-Provags-ID: V03:K0:KrXyKdmDMWA/D5husMsfzmGWPTzCZxLfIiSZpp/QBI/WMqZw/Di kAihUSUhkQvCMkiuyV9IkbFgUVRdzg+WpVbyXhJyphMVm2dq5oVmQallL930kl38UI0COLv bVbzNa98jjdHo6edNi8mivL0tzmZb5okZgcfzbIkUAdhQ9jiMOC1CLicMdD8l/aVcIAmnaF WaQEvStG4ZVB7uTp+E6Og== Cc: cerowrt-devel Subject: Re: [Cerowrt-devel] comcast provisioned rates? X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 20 Apr 2014 20:35:40 -0000 Hi Dave, On Apr 19, 2014, at 19:57 , Dave Taht wrote: > The features of the PowerBoost feature are well documented at this > point. A proper > emulation of them is in the ns2 code. It has been a persistent feature > request, to > add support to some Linux rate shaper to properly emulate PowerBoost, > but no funding > ever arrived. >=20 > Basically you get 10 extra megabytes above the base rate at whatever > rate the line > can sustain before it settles back to the base rate. >=20 > You can also see that as presently implemented, at least on a short > RTT path, the feature > does not prevent bufferbloat. >=20 > http://snapon.lab.bufferbloat.net/~cero2/jimreisert/results.html >=20 > I'd like a faster, less cpu intense rate shaper than sch_htb in > general, and powerboost emulation would be nice. So there is a hint at the end of = https://calomel.org/pf_hfsc.html describing how to use the hfsc qdisc to = allow power boost. It is not perfect though as "whatever rate the line = can sustain" is rather badly defined for all attempts to keep the modem = queues shallow=85 But still the link shows a potential way to allow = power boost from cerowrt. I have no idea how hfsc compares to htb in = terms of processing needs though=85 Best Regards sebastian >=20 >=20 > On Sat, Apr 19, 2014 at 9:38 AM, Aaron Wood wrote: >> Based on these results: >>=20 >> http://snapon.lab.bufferbloat.net/~cero2/jimreisert/results.html >>=20 >> And talking off-list with Jim, I think that the "PowerBoost" is above = the >> quoted rate, as the 24/4 service hits >36Mbps TCP data rate. I'm = definitely >> sad that using SQM in the router instead of the modem loses features = like >> that. But I'll just be happy to have upload over 1Mbps again. >>=20 >> I do know that the FCC was cracking down on advertised vs. actual = rates, and >> started a "measuring broadband in America" project: >>=20 >> http://www.fcc.gov/measuring-broadband-america >>=20 >> -Aaron >>=20 >>=20 >> On Sat, Apr 19, 2014 at 6:21 PM, wrote: >>>=20 >>> As a non-Comcast-customer, I am curious too. I had thought their = "boost" >>> feature allowed temporary rates *larger* than the quoted "up to" = rates. >>> (but I remember the old TV-diagonal games and disk capacity games, = where any >>> way to get a larger number was used in the advertising, since the = FTC didn't >>> have a definition that could be applied). >>>=20 >>>=20 >>>=20 >>> I wonder if some enterprising lawyer might bring the necessary = consumer >>> fraud class-action before the FTC to get clear definitions of the = numbers? >>> It's probably too much to ask for Comcast to go on the record with a = precise >>> definition. >>>=20 >>>=20 >>>=20 >>>=20 >>>=20 >>> On Saturday, April 19, 2014 8:55am, "Aaron Wood" = said: >>>=20 >>> I'm setting up new service in the US, and I'm currently assuming = that all >>> of Comcast's rates are "boosted" rates, not the "provisioned" rates. >>> So if they quote 50/10Mbps, I assume that's not what will need to be = set >>> in SQM with CeroWRT. >>> Does anyone have good info on the "provisioned" rates that go with = each of >>> the Comcast tiers? >>> Basically, I'm trying to get to an apples-to-apples comparison with >>> Sonic.net DSL (I'll be close enough to the CO to run in Annex M = "upload >>> priority" mode and get ~18/2 service). >>> Thanks, >>> Aaron >>=20 >>=20 >>=20 >> _______________________________________________ >> Cerowrt-devel mailing list >> Cerowrt-devel@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/cerowrt-devel >>=20 >=20 >=20 >=20 > --=20 > Dave T=E4ht >=20 > NSFW: = https://w2.eff.org/Censorship/Internet_censorship_bills/russell_0296_indec= ent.article > _______________________________________________ > Cerowrt-devel mailing list > Cerowrt-devel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cerowrt-devel