commit 284a7d0575acecb757d5729fec0201765144e3fb
Author: Karsten Loesing <[email protected]>
Date: Tue Aug 7 19:50:22 2012 +0200
Add raw bridges report from 2009.
---
2009/bridges/.gitignore | 3 +
2009/bridges/bandwidth.pdf | 616 +++++++++++++++++++++++++++++++++++++++++++
2009/bridges/bridges.tex | 87 ++++++
2009/bridges/running.pdf | 627 ++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 1333 insertions(+), 0 deletions(-)
diff --git a/2009/bridges/.gitignore b/2009/bridges/.gitignore
new file mode 100644
index 0000000..b8c3f96
--- /dev/null
+++ b/2009/bridges/.gitignore
@@ -0,0 +1,3 @@
+bridges.pdf
+bridges-2009-06-22.pdf
+
diff --git a/2009/bridges/bandwidth.pdf b/2009/bridges/bandwidth.pdf
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diff --git a/2009/bridges/bridges.tex b/2009/bridges/bridges.tex
new file mode 100644
index 0000000..7cbb3f6
--- /dev/null
+++ b/2009/bridges/bridges.tex
@@ -0,0 +1,87 @@
+\documentclass{article}
+\usepackage{url}
+\usepackage[dvips]{graphicx}
+\usepackage{graphics}
+\usepackage{color}
+\usepackage{booktabs}
+\usepackage{multirow}
+\renewcommand{\thefootnote}{\fnsymbol{footnote}}
+\begin{document}
+\title{Measuring the Tor Network\\{\large Evaluation of Bridges and Their
Usage in Tor}}
+\author{Karsten Loesing}
+\maketitle
+
+\begin{abstract}
+This document contains the results of an evaluation of bridge archives
containing the network statuses, bridge descriptors, and extra-info documents
of bridges between May 2008 and June 2009.
+
+The evaluation of bridge data shall answer a couple of questions about bridge
usage. These questions start with the number of bridges and the total bandwidth
that they transport. Another question is where bridge clients are located. The
following analysis focuses on these questions.
+
+All scripts and a howto for performing the evaluation can be found under:
\url{git://git.torproject.org/git/metrics/}
+\end{abstract}
+
+\begin{figure}
+\includegraphics[width=\textwidth]{running.pdf}
+\vspace{-0.7cm}
+\caption{Running bridges between May 16, 2009 and June 21, 2009. The graph
shows clearly that the number of bridges increases continuously over time with
a significant increase in June 2009, probably as a result of the Iranian
elections.}
+\label{fig:running}
+\end{figure}
+
+\begin{figure}
+\vspace{0.5cm}
+\includegraphics[width=\textwidth]{bandwidth.pdf}
+\vspace{-0.7cm}
+\caption{Observed bandwidth on all bridges between May 2008 and June 2009.
+In this analysis, the two history lines of extra-info documents are used to
calculate observed bandwidth. The trend towards more bridge usage over time is
not as clear as is the trend towards more bridges.
+% [The following explanation might be false. It's bridges that have been
running as relays before which resulted in the peaks. The updated graph does
not include these bridges anymore.]
+%A further investigation of the peaks on September 27 and October 30, 2008
revealed another interesting observation: In these two cases, single bridges
which were set up the day before the observation contributed 64 and 75\% of the
overall bandwidth.
+%An explanation could be that these bridges were set up for a specific purpose
and then left running for public usage. This observation shows that statistics
of bridge usage can be directly influenced by single events.
+}
+\label{fig:bandwidth}
+\end{figure}
+
+\begin{table}[ht]
+\caption{Bridge usage by selected countries, inluding the five countries that
see most bridge users and a number of countries that might block access to
parts of the Internet (the two sets overlap). The numbers represent a rough
estimation of the number of users accessing the Tor network over a bridge. The
numbers are based on reports by bridges how many users they have seen in the
past 48 hours. The trend towards increasing bridge users can be seen for most
countries.
+%Interestingly, the increase in August cannot be attributed to Chinese users,
which speaks against the earlier assumption that the increase is a result of
the Olympics.
+}
+\vspace{0.5cm}
+\label{tab:geoip}
+\centering
+\tabcolsep1.2mm
+{\footnotesize
+\begin{tabular}{lrrrrrrrrrrrrr}
+\toprule
+ & \multicolumn{7}{c}{2008} & \multicolumn{6}{c}{2009}\\
+ & Jun & Jul & Aug & Sep & Oct & Nov & Dec & Jan & Feb & Mar & Apr & May &
Jun\footnotemark\\
+\midrule
+U.S.A. & 152 & 235 & 494 & 833 & 799 & 1165 & 1175 & 783 & 953 & 1174 &
1317 & 1510 & 1405\\ % us
+Iran & 0 & 10 & 39 & 36 & 33 & 91 & 78 & 176 & 103 & 26 &
107 & 136 & 487\\ % ir
+China & 33 & 69 & 77 & 100 & 139 & 486 & 394 & 207 & 183 & 151 &
188 & 296 & 390\\ % cn
+Germany & 21 & 64 & 171 & 216 & 260 & 830 & 694 & 562 & 262 & 239 &
209 & 235 & 337\\ % de
+Russia & 27 & 55 & 122 & 220 & 190 & 223 & 334 & 251 & 359 & 207 &
263 & 176 & 305\\ % ru
+U.A.E. & 37 & 67 & 40 & 89 & 38 & 105 & 141 & 175 & 298 & 124 &
76 & 133 & 255\\ % ae
+Saudi Arabia & 3 & 11 & 108 & 103 & 9 & 159 & 334 & 221 & 211 & 193 &
217 & 200 & 126\\ % sa
+Belarus & 0 & 3 & 0 & 7 & 80 & 117 & 113 & 54 & 48 & 20 &
36 & 79 & 86\\ % by
+Syria & 0 & 0 & 0 & 3 & 4 & 5 & 1 & 0 & 0 & 0 &
35 & 48 & 64\\ % sy
+Pakistan & 0 & 0 & 13 & 3 & 3 & 33 & 16 & 6 & 25 & 10 &
7 & 8 & 32\\ % pk
+Viet Nam & 0 & 0 & 4 & 0 & 0 & 37 & 30 & 17 & 7 & 36 &
27 & 47 & 25\\ % vn
+Azerbaijan & 0 & 0 & 0 & 0 & 0 & 0 & 8 & 0 & 73 & 42 &
122 & 48 & 0\\ % az
+Jordan & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 28 &
8 & 22 & 0\\ % jo
+Myanmar & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 19 & 0 &
3 & 5 & 0\\ % mm
+Egypt & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 &
0 & 2 & 0\\ % eg
+Kazakhstan & 0 & 0 & 2 & 0 & 0 & 5 & 9 & 1 & 30 & 40 &
28 & 0 & 0\\ % kz
+Uzbekistan & 0 & 0 & 0 & 0 & 0 & 2 & 0 & 0 & 0 & 0 &
3 & 0 & 0\\ % uz
+Yemen & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 0 & 0 & 0 &
4 & 0 & 0\\ % ye
+Morocco & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 &
0 & 0 & 0\\ % ma
+Sudan & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 &
0 & 0 & 0\\ % sd
+Tunisia & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 &
0 & 0 & 0\\ % tn
+\bottomrule
+\end{tabular}
+}
+\begin{minipage}{\linewidth}
+\vspace{0.2cm}
+{\footnotesize $^{*}$ Estimation based on data up to June 21, 2009.}
+\end{minipage}
+\end{table}
+
+\end{document}
+
diff --git a/2009/bridges/running.pdf b/2009/bridges/running.pdf
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