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 3C52F21F739 for ; Mon, 19 Oct 2015 08:16:21 -0700 (PDT) Received: from [10.61.3.117] ([107.171.60.100]) by mail.gmx.com (mrgmx101) with ESMTPSA (Nemesis) id 0MYsEZ-1a1n5W1RfX-00Vj53; Mon, 19 Oct 2015 17:16:17 +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: Mon, 19 Oct 2015 10:15:44 -0500 Content-Transfer-Encoding: quoted-printable Message-Id: <9717A3D5-6BF8-4454-A664-AAE4D276C942@gmx.de> References: To: Noven Purnell-Webb X-Mailer: Apple Mail (2.1878.6) X-Provags-ID: V03:K0:fVwpiLgWMw08bEFGXOxzJ1n2C81HAHuroK+n5WOCotQauUc9RYY 5lY9ZpYbZEePcbfYpnvXzumXKu2FxYLEJ+W0zCZPC1SDPMjqInbn4njErZUvQ5KxgWV7FEU dMUXZ3cidKl9cLVCONMYCed2f9NT8lber0MRqIuhhqflwscsdzY6r5NJ4qU5CLZkDPLzoUb DPW4MvjHnzH34AVZCbCJw== X-UI-Out-Filterresults: notjunk:1;V01:K0:WGxdFGktoTw=:qqxkjEoSKAlCgDT7n+CkH/ 8rTq9cIX5dpk7GLj97dZPilHac7MLWliwqNSkyafFtTO4aNuPnZhAj8WT+X98c+JNtTDCF49F A8kv2aaGxtnfNHFJsPa74p8VqJ7daLuOHJJmFu4JAhYDbshyXkaVtAEktBjwntRpsRADdq6jJ yshuAtvcNir/ywqkql8NjfvgPK9YKy0pbcCDkfpbM1F1NABq0xZZMLEYWFAmn9VXjzfHzc+Az ScCjVOtU1LZGwr4bMW7Lu2HCV9ITrnX9ei5OQMhGQr4oe9cW5Pqllitpr4175jCB/KoyxJX9f yMAaEzxn6K/2MiTvrhATsSpwhiEEqMKjtS9A6Rc1UjDVhLj/LbL6OteGaIf3xAG+VP38puIVK SE1OCHdA3Iwr6Q1N3Lyj1CD+jdfb49m47mKcj5DlPhsU8HScPj7tWHv3s9H45keRv1pBEssCe l/cmxJQBneO1Y8OWn8vS0c3IgLnlhD9czhwI9qvPMWZ4PCM737ShyKggRtMgm5XwV8TlpfaSG OJeEnPpLKDtfC0Xd4RlgKxZ1eLefPO4HpIFtB/g0pGhBwm4ZC+etemxafuMqWNyux4ipbG+ET j5n9lE9L86J48d9OMQaar1uOGFBc8CDjJCWNWx60AsTExnI2uuX4V9uAnqH5xjp/Q0gsgPWqo bcs4OZDcHoIWaxSqgRuQtEa01MDy9dpczfB1KYC+PRvkbQJ+leLf02qP8L+LH6TRxVP8lk/cw YpTL1dYqvdOYVqsEDWtDqYv0PDNEiYnonwuJnN9apDJ5RV7kta2Asoe4iQT9z3AVwcI9hqjM+ wjri4TT Cc: cake@lists.bufferbloat.net Subject: Re: [Cake] Cake over satellite 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, 19 Oct 2015 15:16:44 -0000 Hi Noven, On Oct 19, 2015, at 09:55 , Noven Purnell-Webb = wrote: > I'm about to go on a mission to the outback, with one objective being = to tune a disappointing satellite link. Theoretically 6/1mbps, with RTTs = ranging from 700 - 1200ms. =46rom the cake technical page=20 > "The AQM layer has no configuration options. However, it is planned to = add simple tuning options for different prevailing RTTs that may be = significantly different from the Internet-scale 100ms currently assumed. = Satellite links tend to impose longer RTTs, and enclosed LANs tend to = have much shorter RTTs." Does this imply cake is not yet ready for use = on satellite links? Or merely that I'll get sub-optimal results but it's = still worth testing?=20 > I see I could set the interval in sch_cake.c and recompile - is there = any reason why this would be a bad idea? Am I right in thinking with = such observed variation I'll get better results setting for the lower = limit (700) rather than the upper (1200)? > Any suggestions for a more sane target to set while I'm doing this? > Has anyone here already done testing on satellite links? I believe that interval/rtt is now settable via tc, BUT target = is clamped to a max of 5ms, while in theory it should be 5-10% of rtt, = so current cake might work well out of the box, or might require = fiddling with target. It would be most excellent if you could actually = test that aspect of cake for us ;) Best Regards Sebastian >=20 > - Noven >=20 > --=20 > - Noven Purnell-Webb > Creative Technology Consultant > +61 448 841 091 > http://onecardme.com/NovenPWebb >=20 >=20 > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake