A much longer test would be to download this wget -4 http://gw.lab.bufferbloat.net/capetown/capetown-wndr3700v2/OpenWrt-ImageBuilder-ar71xx-for-Linux-x86_64.tar.bz2 while pinging somewhere fairly close by. Over your wired and wireless connection(s)... Over multiple downloads, too... Sorry to make you work so hard. I am SO OVERJOYED to get some data on this problem, however..... (yes, I'll change it to lab.bismarkproject.net as soon as DNS lands) On Fri, May 20, 2011 at 4:42 PM, Dave Taht wrote: > > > On Fri, May 20, 2011 at 4:35 PM, Nick Feamster wrote: > >> >> On May 21, 2011, at 12:28 AM, Dave Taht wrote: >> >> > >> > And btw, what are the results of a speedtest from your location without >> QoS on? >> > >> >> Have run it 2x now. >> >> I see about 850 kbps down and 400 kbps up. >> >> The default upload setting is abusive. >> > > Sorry. Nicaragua typically had 64k-128k up. Took my best guess. > > >> >> > With QoS on, set to up/dl values within a few percentage points of that >> (and the overhead calculation disabled) >> > >> > > 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... > > 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.... > > 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... > > I'd LOVE for a few tcpdumps of stuff like this, from where you are..... > > > 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... >> >> Yep yep... though I don't think PowerBoost is enabled over here. >> Although, we'll find out. :-) >> >> -Nick > > > > > -- > Dave Täht > SKYPE: davetaht > US Tel: 1-239-829-5608 > http://the-edge.blogspot.com > -- Dave Täht SKYPE: davetaht US Tel: 1-239-829-5608 http://the-edge.blogspot.com