From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.17.20]) (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 5AF9B21FC71; Mon, 29 Jun 2015 01:59:47 -0700 (PDT) Received: from u-089-d065.biologie.uni-tuebingen.de ([134.2.89.65]) by mail.gmx.com (mrgmx102) with ESMTPSA (Nemesis) id 0Lf0M7-1YiSdy4BFH-00qhHu; Mon, 29 Jun 2015 10:59:46 +0200 Content-Type: text/plain; charset=iso-8859-1 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sebastian Moeller In-Reply-To: Date: Mon, 29 Jun 2015 10:59:55 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <36908DFD-B5A9-45E5-BBA1-AC25618997E1@gmx.de> References: To: =?iso-8859-1?Q?Dave_T=E4ht?= X-Mailer: Apple Mail (2.1878.6) X-Provags-ID: V03:K0:Et/N1342pCPWoEHMQm6S5gfSSxiCXJ1L5wiT2SkgHbQVzU6RJ+w iUSeLnBmD3iaqnOTg22qT+xPZGbnNd2CQJeZqRm0bHSA9vycW5rDAIfuUScN5TgCa1ak54h fg+T55y5DFKB691+CNLblALWbN6mtGfs4eOlEPjIwEcgncSAtlsWDDszRjYBAA7q39vNJFQ zPiKNnNk4I/imbWf4Cc/w== X-UI-Out-Filterresults: notjunk:1;V01:K0:E5eAgnqtqvA=:PfpjXPMmi9efsu+bWyfZd9 iuQePWmeq/PiDRWd9gpXSAv/ZWjPaTdDRyl/NVRUL+XykB2yeYO4rcRALacet5Sfi2PVbpce3 duDaprfUoz0PyAYnCb+1G4g77ZKXC7bB44JdR5wrhUY1Qmxa4hvGkbmv0/EfO9kwZWbG3fSGv 6uX41lXjxhZbb9tOqlI4JxBdvLHUio2ikpvnly9klf3sG1EP/oNP686mmFn6A4Q/iL0iEqW/6 54co+54i3wTm6kWxceFDUcljj2NhE3liN27m6HxmiwRjmxVrlcI7pRHEL6DS6o/EY2nwYf+Bu dbFUHQw/bLtp90gubaPUx9d3cXG45gqloV3eq6HIQhRbAUEq13Os+WYpfZQkfWtmEYrOX068P AD/SZh4YLlcV9DCOGhglnF+JTFjkmnkZ004YrGIRa8XVtKgLGcdhrwDWPBGQWrfFBsoydNGl7 bQbXb864nrgcDjWeOFZrCj1GRvmhH6ldE64RcifoeyfAEXhaBtEjGKBHJYlcWOhBqvj0z+Fq9 XFsVHUM8cm8GFecq9ZN6joTusFXnRFwYojKwtsrl6cYh/x2KU0vPwy4Za1O3xULcZiEA7z99y EeEMrca/pEtQDlE29py5g2iNMP65zHufS9SHZB/t7nHYRRDq0OVatyVnTdU0kwzPUwPWnsEyh gwu1KKWOVi9vtf1HGwZxrzLkeZBJ57eNPyA5JqfXGaF5TyORUzkXYG70CqshBrU5cx8w= Cc: cake@lists.bufferbloat.net, "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cake] some reference numbers for cake performance on x86_64 X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Jun 2015 09:00:18 -0000 Hi Dave, hi list, On Jun 29, 2015, at 01:42 , Dave Taht wrote: > This is a set of two hop (client-server through switch) results, with > sch_fq on the nuc client, and cake on the rangeley (ranger) server. >=20 > Since we seem to be aiming for sane results from the mvneta, at speeds > at 500mbit... >=20 > http://snapon.lab.bufferbloat.net/~d/k500/ >=20 > Do note that this is a live system with other traffic so it is noisy = data. >=20 > Of note, in looking at this dataset in comparison to mikaels, is that > he only got 360mbit bidirectional on rrul_be - where I get full > throughput. admittedly he seemed to be running using htb as the rate > limiter. Being off by *20%* from the set setting (after subtracting > acks) of 500 mbit however, seems to be an issue. So ignoring the ACKs we can expect a TCP/IPv4 payload rate up to 480 = Mbps. TCP/IPv4 Payload at 500Mbps shaping: 1500 - 20 - 20 =3D 1460 Byte payload to OTWS ratio 1460/1518 =3D 0.961791831357 Payload Bandwidth 500*1460/1518 =3D 480.90 Mbps Packet rate: 500*1000^2 / (1518 * 8) =3D 41K In other words a loss of roughly 4 percent for the required protocol = headers. For the ACK traffic an rough estimate would be: one ACK for every other packet (allowing delayed ACKs), increasing the = packet rates to roughly 60K per direction and eating: (20000 * 64 * 8) / 1000^2 =3D 10.24 Mbps So a rrul test should give us something close to 470Mbps (ignoring the = UDP and ICMP flows and) or roughly 100-100*470/500 =3D 6% loss not 20%. On the positive side I seem to remember we were looking for a rower that = can handle 300Mbps bi-directionally and it seems the 1200ac cmes floes = or even exceeds this threshold ;) Best Regards Sebastian >=20 > I will setup another box to do client - router -server this week. >=20 > --=20 > Dave T=E4ht > worldwide bufferbloat report: > http://www.dslreports.com/speedtest/results/bufferbloat > And: > What will it take to vastly improve wifi for everyone? > https://plus.google.com/u/0/explore/makewififast > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake