From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (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 19D4421F678 for ; Fri, 26 Jun 2015 07:17:40 -0700 (PDT) Received: from hms-beagle-7.am28.uni-tuebingen.de ([134.2.92.93]) by mail.gmx.com (mrgmx001) with ESMTPSA (Nemesis) id 0LiTm8-1YW7MS12po-00cj4i; Fri, 26 Jun 2015 16:17:36 +0200 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sebastian Moeller In-Reply-To: Date: Fri, 26 Jun 2015 16:17:38 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: References: <26463A88-821B-44B7-A728-64BCB0B7C7BB@gmx.de> <55847E32.9000405@gmail.com> <5584823E.4040207@gmail.com> <0129B5FB-9D1B-45FF-84CA-492A6A0B638B@gmx.de> <43D5C3CE-F1F4-4BA5-AEB9-55348661C7BA@gmx.de> To: Mikael Abrahamsson X-Mailer: Apple Mail (2.1878.6) X-Provags-ID: V03:K0:VbP1Q4atua3Mi2EvS6/TWt6YU64LP+eelvWk//GT3ch95f4wpgQ K7zPFBtj3aRV6LKYaNDSZrT1lnl8MEpYOfSgtgXHfKWEuHC9i8FYoPLQSJ78hbVq4Z76g1n 7DsGxElGeNvgS8djw7D6iMOH6M7k82ftLzoc100wnNN6RSDOY6E0xdaZU5nJ58UJ71RJ2fc 76EUnFqyc9iPh0+EbXTyA== X-UI-Out-Filterresults: notjunk:1;V01:K0:GKjixpq+dSk=:et6b/i8swfWdPEz3iBzPhs fGORtCd/LletLqq7Dan09n8Bv98wcJQWnjoIh9C4/E6L2VSwteNgjeURg6qzlao0j9pqJyOs6 c+3vHLC3wNx8euM24oKMPRaIB2pZxx0i54/2tWl/5nUH7v60lwaJZ3os04BZ+kz/KhRdiLvTZ hNUSg3A4vl8HzPfkb4cHXBxpABMs6zMcqB78ntOrhDLX8BWOmQ0EbrnI4HMAKeTX3V6w61IyX Q7RDn19zUOohu7lME9eF+Qj+nE4Uf/dgvDPfE61xqgKm6P/GXVIam6Y4nbhZhle5MOg2QcYLj N4wVyMlmObr/P0hEBqzqzJKEmCBraiLoyYUMrLm2jIvsISWHYeRlXhnmZ/y7v6vHsmo/Gsske i01d27bJEuMMnh/X9KQE8j3Go9BIqNcR0ZV/ezUUSqubKIGZVbaLGvtVmChx5KW4/4rfTXV9b 21jtHhyac3INH/khq5hHqkLTiEM4Wo+Du0D14jPsW7YwdhsskOCIVAIcaCHnC4PMSTfYqxRUq EdtEkbUmqdUckLXnTjmqOW9INSk4GzrjwyFsrIXkbtc1wZ1NY8rsGbfHJtfKtU/d730tXX05n ZbdKlEHr9/baPB7t5qLHaOWsjRJ0uuYGZjmWYriqLBvvk1N+4Um726xbJsFybukrsiehG2VDN WPohIvnXoM4rK6V4wi7p7in2A5E20CPuKT7IRqnXA8LZHJMubMJg7THnuWKLwXVppKJI= Cc: cerowrt-devel Subject: Re: [Cerowrt-devel] performance numbers from WRT1200AC (Re: Latest build test - new sqm-scripts seem to work; "cake overhead 40" didn't) 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: Fri, 26 Jun 2015 14:18:09 -0000 Hi Mikael, On Jun 26, 2015, at 14:26 , Mikael Abrahamsson wrote: > On Fri, 26 Jun 2015, Sebastian Moeller wrote: >=20 >> Thanks for the tests, now I know what router to try next (the = edgerouterX, which I had eyed as a replacement for the shaper in the = wndr3700 tops out at 130K packets per second and hence will not really = work that well for a 100/40 Mbps link). >=20 > I did some more tests and it seems with SQM at 500 megabit/s I start = to lose packets at around 250-300k PPS. At these speeds, the rrul_be = test is "only" 85k PPS at 500 megabit/s bidirectional with large = packets. Ah, that sounds like there 1200ac is a practical solution today; = at 500Mbps there are 500^3/(64*8) =3D 244 Kpps at the smallest size = (since the wire is at 1000 Mbps I think we should and can ignore inter = frame gap and preamble, SQM certainly ignores them) so it looks like the = router is really close to the theoretical maximum, and with larger = packets things get way more relaxed (500^3/(1518*8) =3D 10 Kpps). Pretty = decent for a router using no proprietary offload features. >=20 > Also, I have an Edgerouter ER-5, but as soon as it does CPU based = forwarding it's really weak, easily under 100 megabit/s even with large = packets. OpenVPN without encryption is less than 20 megabit/s. Ah, interesting, so neither the affordable edge router lite nor = the (similar) ER-5 will cut it unless the offloads are used; I think the = newer edgerouterX is rated for slightly higher speeds without offloads, = but not nearly close to what your 1200ac does... >=20 > Btw, the WRT1200AC is now becoming more widely available and it's 150 = EUR incl 25% VAT and shipping here in Sweden now. In Germany it still retails for around 200EUR with the cheapest = offer at 180EUR (but that is an outlier); guess I should visit Sweden = then ;) >=20 > Btw, I tried WNDR3800 setting it to 100/100 SQM. Yeah, not pretty, huh? > It seems to max out around 25-30k PPS, but the difference is that when = the CPU is full, it seems to delay/ECN-mark packets because there are no = packets lost. When the WRT1200AC runs out of CPU it starts dropping = packets. I always have 0 packets lost with the WNDR3800 when doing = iperf3 testing. I found this difference interesting, wonder where in the = forwarding path the WRT1200AC loses packets? Interesting observation, no idea, but intrigued ;) Best Regards Sebastian >=20 > --=20 > Mikael Abrahamsson email: swmike@swm.pp.se