From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bifrost.lang.hm (lang.hm [66.167.227.134]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 309653B2A2 for ; Wed, 23 Nov 2016 14:42:32 -0500 (EST) Received: from dlang-laptop ([10.2.0.122]) by bifrost.lang.hm (8.13.4/8.13.4/Debian-3) with ESMTP id uANJgSW2000564; Wed, 23 Nov 2016 11:42:28 -0800 Date: Wed, 23 Nov 2016 11:42:28 -0800 (PST) From: David Lang X-X-Sender: root@dlang-laptop To: Benjamin Cronce cc: Noah Causin , bloat In-Reply-To: Message-ID: References: <8d72490d-551a-c58f-991a-1750e9af8df9@gmail.com> <2e7e4dbe-5a95-93f3-89de-447f6bf970f9@gmail.com> User-Agent: Alpine 2.20.17 (DEB 179 2016-10-28) MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset=US-ASCII Subject: Re: [Bloat] fixing bufferbloat in 2017 X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Nov 2016 19:42:32 -0000 Most people not only aren't operating at 1Gb/sec, they can't buy a 1Gb/sec line at any cost. 100Mb is getting more common, but the majority of people cannot buy a line this fast for any amount of money. 10-30 Mb is probably the range that "most people" have, with a large number stll having <10Mb available, no matter what they are willing to pay David Lang On Wed, 23 Nov 2016, Benjamin Cronce wrote: > I meant the actual physical link, not the provisioned rate. Most last mile > tech encapsulates Ethernet frames into larger super-frames. Decapsulating > the Ethernet frames is pretty much at 1Gb line rate. On my GPON link, with > shaping in PFSense turned off, I regularly see 4,000+ 1500byte datagrams at > full 1Gb link rate hitting my WAN before my ISP starts shaping to my > 150Mb/s average. When I had a cable modem, I would see similar, except > instead of a constant 1Gb/s, I would see bursts of multiple packets, then a > small pause, but eventually the packets started to get more and more spaced > as the provisioned average started to kick in. I assumed this was because > my DOCSIS3 8x bonded link could only max out around 300Mb/s, even though my > provisioned rate was only 30Mb/s. > > It really depended on the quantum of the shaping algorithm, calculated > average window size, and how elastic or strict it was. > > Ahh, packet packing, what a fun problem. > > On Wed, Nov 23, 2016 at 12:38 PM, David Lang wrote: > >> On Wed, 23 Nov 2016, Benjamin Cronce wrote: >> >> Most people only have a 1Gb network link, >>> >> >> umm, no, most people have FAR slower links, by an order or two of >> magnatude. >> >> David Lang >> >