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 B0A0E21F3BE for ; Mon, 28 Jul 2014 12:30:01 -0700 (PDT) Received: from hms-beagle.home.lan ([217.231.210.84]) by mail.gmx.com (mrgmx001) with ESMTPSA (Nemesis) id 0M6BKc-1WIGBo2REQ-00yCx0; Mon, 28 Jul 2014 21:29:58 +0200 Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sebastian Moeller In-Reply-To: Date: Mon, 28 Jul 2014 21:29:58 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <17576F72-2562-41F5-88CC-A19C18FE814C@gmx.de> References: To: =?windows-1252?Q?Dave_T=E4ht?= X-Mailer: Apple Mail (2.1878.6) X-Provags-ID: V03:K0:Vm+mVQwlsaKjzxnsAlZMLjEe5DLlB6hVdWoiCciBv/DkI1erdnb dpPrpLLNvBoGoAqTNpsGOF8bQfXTg+0/6toqNpFJM3Utk6q2tI0bDkPJgLsJOXqhf7eu3+H I9JdIozPIfrSJltY3KIpsbOeqiy6r78ESYZb4jMXcW0wNBYci1gWAc5c0VKevW7igXz3CJC IOhLfZ0Bjk7I3jtCz3p7w== Cc: "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cerowrt-devel] DSL devices? 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: Mon, 28 Jul 2014 19:30:02 -0000 Hi Dave, hope you had a great time... On Jul 28, 2014, at 20:59 , Dave Taht wrote: > There are a LOT of dsl capable devices in openwrt barrier breaker. I > am curious if anyone has tried one of late? I just got back from > "farmstock", and as effective as software rate limiting can be, I > imagine that when someone is stuck at a line rate of 1Mbit down and > 384k up that doing it in hardware is superior=85 For the uplink, sure the router/modem should avoid the software = cost of shaping (not that that should be costly @384k...) >=20 > This was a classic bufferbloated plot on the existing 384k uplink = there: >=20 > = http://snapon.lab.bufferbloat.net/~d/farmstock/farmstock_upload_showing_17= 00ms_latency.png >=20 > Downloads were not so bad, "only" 1sec of buffering... >=20 > = http://snapon.lab.bufferbloat.net/~d/farmstock/farmstock-short-download.pn= g >=20 > there appears to be some level of ack prioritization or fair queuing > in play here, an internet radio flow would survive the onslought of > netperf-wrapper for 10s of minutes... and generally full download rate > was achieved at a huge cost in the upload. But this means that the downlink needs the shaper badly (unless = the ISP can be convinced to allow making setting to the prioritization = settings in the DSLAM/BRAS) >=20 > = http://snapon.lab.bufferbloat.net/~d/farmstock/farmstock-bidirectional.png= >=20 > you can imagine under the influence of two dozen millenials with 1 or > more phones/tablets each, the network performed rather badly during > the show. >=20 > Anyway, so I figure that there are a selection of DSL capable openwrt > platforms now someone can fiddle with=85. I think it is only TI and lantiq (=3D ex-infineon =3D siemens) = del modems have open source drivers, all devices with broadcom DSL = modems in the hardware database will not allow use of the modem even if = listed as supported. Best Regards Sebastian >=20 > PS wow was there a lot of traffic on the list while I was away. I am = way behind. >=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