Re: [Bismark-devel] about ready to do another build

[Dave Taht <dave.taht@gmail.com>]

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On Fri, May 20, 2011 at 5:22 PM, Nick Feamster <feamster@cc.gatech.edu>wrote:

> 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. :-)
>

Well, yea, but I wanted a good number to bake into the build which I'm
hovering over the build button for...



>
> Two questions:
> 1. What do you want lab.projectbismark.net pointing to?  I'll update the
> dreaded godaddy until DNS lands.
>

A problem is that the routers register themselves in DNS (or will), and we
need bind9 for that.

I hope to have real dns after meeting with netops monday.


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.
> I would like  Host <----wireless----> WNDR Relay <---wireless-->WNDR Relay
> <---wired ---> Modem
> Not sure how to set up the relays.
>

Yes, you can do that. I'm tickled you're willing to try it...
There are a couple ways, but I'd prefer to get you through it in irc?



>
> Thanks,
> -Nick
>
> On May 21, 2011, at 12:47 AM, Dave Taht wrote:
>
> > 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 <dave.taht@gmail.com> wrote:
> >
> >
> > On Fri, May 20, 2011 at 4:35 PM, Nick Feamster <feamster@cc.gatech.edu>
> 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
>
>


-- 
Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608
http://the-edge.blogspot.com

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