Re: [tor-talk] Cause of drops in network congestion on 2013-10-09 and 2014-06-06

[Virgil Griffith <i@xxxxxxxxx>]

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
sense.

Secondly, a two-sample t-test put the blue and red groups into different
populations.
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.

-V


On Thu, Aug 7, 2014 at 10:42 PM, Anders Andersson <pipatron@xxxxxxxxx>
wrote:

> 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
> distinct
> > 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
> > --
> > tor-talk mailing list - tor-talk@xxxxxxxxxxxxxxxxxxxx
> > To unsubscribe or change other settings go to
> > https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk
> --
> tor-talk mailing list - tor-talk@xxxxxxxxxxxxxxxxxxxx
> To unsubscribe or change other settings go to
> https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk
>
-- 
tor-talk mailing list - tor-talk@xxxxxxxxxxxxxxxxxxxx
To unsubscribe or change other settings go to
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk