From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from deliverator5.gatech.edu (deliverator5.gatech.edu [130.207.165.165]) by huchra.bufferbloat.net (Postfix) with ESMTP id 3DEFC2004FF for ; Fri, 20 May 2011 16:10:48 -0700 (PDT) Received: from deliverator5.gatech.edu (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 92C4D1800A3; Fri, 20 May 2011 19:22:31 -0400 (EDT) Received: from mail3.gatech.edu (mail3.gatech.edu [130.207.185.163]) by deliverator5.gatech.edu (Postfix) with ESMTP id 14A7818037F; Fri, 20 May 2011 19:22:31 -0400 (EDT) Received: from kenmore-square.home.lan (dsl-185-155-129.dynamic.wa.co.za [41.185.155.129]) (Authenticated sender: nf21@mail.gatech.edu) by mail3.gatech.edu (Postfix) with ESMTPSA id AC3A214924D; Fri, 20 May 2011 19:22:27 -0400 (EDT) Mime-Version: 1.0 (Apple Message framework v1082) Content-Type: text/plain; charset=iso-8859-1 From: Nick Feamster In-Reply-To: Date: Sat, 21 May 2011 01:22:20 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <3D4FDD73-CD02-4B57-BF46-3AAD7EBB75A2@cc.gatech.edu> References: <9EFCAA58-92E8-45FD-9BE4-F213564264E6@cc.gatech.edu> <5C1FCBFC-B007-4B01-A7BA-6CCD5523DC34@cc.gatech.edu> <048ECF4E-9E70-4957-90B4-ACD3C0D7AD44@cc.gatech.edu> To: Dave Taht X-Mailer: Apple Mail (2.1082) Cc: bismark-devel@lists.bufferbloat.net Subject: Re: [Bismark-devel] about ready to do another build X-BeenThere: bismark-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: BISMark related software development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 May 2011 23:10:48 -0000 We actually have a test exactly like this in bismark active. I'll give = it a try. Remember: people have data caps here. Another complication. :-) Two questions: 1. What do you want lab.projectbismark.net pointing to? I'll update the = dreaded godaddy until DNS lands. 2. How do you run the babel multihop stuff? Can I run it in this build? = I'm in a fairly big house with *zero* wireless connectivity downstairs = and would like to try it out. =20 I would like Host <----wireless----> WNDR Relay <---wireless-->WNDR = Relay <---wired ---> Modem Not sure how to set up the relays. Thanks, -Nick On May 21, 2011, at 12:47 AM, Dave Taht wrote: > A much longer test would be to download this >=20 > wget -4 = http://gw.lab.bufferbloat.net/capetown/capetown-wndr3700v2/OpenWrt-ImageBu= ilder-ar71xx-for-Linux-x86_64.tar.bz2 >=20 > while pinging somewhere fairly close by. >=20 > Over your wired and wireless connection(s)... >=20 > Over multiple downloads, too... >=20 > Sorry to make you work so hard. I am SO OVERJOYED to get some data on = this problem, however..... >=20 > (yes, I'll change it to lab.bismarkproject.net as soon as DNS lands) >=20 > On Fri, May 20, 2011 at 4:42 PM, Dave Taht = wrote: >=20 >=20 > On Fri, May 20, 2011 at 4:35 PM, Nick Feamster = wrote: >=20 > On May 21, 2011, at 12:28 AM, Dave Taht wrote: >=20 > > > > And btw, what are the results of a speedtest from your location = without QoS on? > > >=20 > Have run it 2x now. >=20 > I see about 850 kbps down and 400 kbps up. >=20 > The default upload setting is abusive. >=20 > Sorry. Nicaragua typically had 64k-128k up. Took my best guess. > =20 >=20 > > With QoS on, set to up/dl values within a few percentage points of = that (and the overhead calculation disabled) > > >=20 > And with QoS set to say 840/380, with the overhead calculation = disabled? Should be about 15% below that for a long bulk transfer. Can = get closer... > =20 > Please note that setting these values on the basis of one datapoint in = a majorish city will result in bad values deeper in the country.... >=20 > Helps to also ping somewhere at the same time of the test to see your = latencies start to go to heck as you get closer to the "edge". You'll = see it start to jitter... then go wildly late... and at extreme values, = tcp/ip will start to malfunction as per the bufferbloat diagrams... >=20 > I'd LOVE for a few tcpdumps of stuff like this, from where you = are..... >=20 > > I can bake a better default into the next build, but I was figuring = you'd be lucky to be gettting 1000 down.... > > > > I want to note that according to your previous study, the first 30 = seconds of data need to be discarded in order for a speedtest to be = valid, and speedtest.net doesn't do that... >=20 > Yep yep... though I don't think PowerBoost is enabled over here. = Although, we'll find out. :-) >=20 > -Nick >=20 >=20 >=20 > --=20 > Dave T=E4ht > SKYPE: davetaht > US Tel: 1-239-829-5608 > http://the-edge.blogspot.com=20 >=20 >=20 >=20 > --=20 > Dave T=E4ht > SKYPE: davetaht > US Tel: 1-239-829-5608 > http://the-edge.blogspot.com=20