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Re: [tor-talk] Cause of drops in network congestion on 2013-10-09 and 2014-06-06
Although I didn't know it at the time, the first day of the green group
happened to be the first day of the EFF Tor Challenge. So that makes some
Secondly, a two-sample t-test put the blue and red groups into different
Thirdly, a regression analysis of the solely the red data puts a slope at
-1.889e-05 (essentially zero) with a p-value of 10^-11.
On Thu, Aug 7, 2014 at 10:42 PM, Anders Andersson <pipatron@xxxxxxxxx>
> Why do you think they belong to different groups? It's absolutely not
> obvious if the colorization is removed. All of your "groups" have a
> preceding slope indicating that something started before your limits,
> and they seem to be normal variations of a general down slope that
> started in 2013.
> On Fri, Aug 8, 2014 at 12:54 AM, Virgil Griffith <i@xxxxxxxxx> wrote:
> > I've been looking through the various historical data from
> > metrics.torproject.org.
> > If you plot the 'used bandwidth' divided by the 'advertised bandwidth'
> > (meant to be a rough measure of network congestion), you get three
> > groups, seen here:
> > http://dl.dropbox.com/u/3308162/three_groups.png
> > What happened on the dates 2013-10-09 and 2014-06-06 which could have
> > resulted in these striking drops in network congestion?
> > -V
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