“Tor metrics are the ammunition that lets Tor and other security advocates argue for a more private and secure Internet from a position of data, rather than just dogma or perspective.”
— Bruce Schneier (June 1, 2016)
This graph shows the fraction of direct connections between a relay and other nodes in the network that are used uni- or bi-directionally. Every 10 seconds, relays determine for every direct connection whether they read and wrote less than a threshold of 20 KiB. Connections below this threshold are excluded from the graph. For the remaining connections, relays determine whether they read/wrote at least 10 times as many bytes as they wrote/read. If so, they classify a connection as "Mostly reading" or "Mostly writing", respectively. All other connections are classified as "Both reading and writing". After classifying connections, read and write counters are reset for the next 10-second interval. The graph shows daily medians and inter-quartile ranges of reported fractions.
This material is supported in part by the National Science Foundation under Grant No. CNS-0959138. Any opinions, finding, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. "Tor" and the "Onion Logo" are registered trademarks of The Tor Project, Inc.. Data on this site is freely available under a CC0 no copyright declaration: To the extent possible under law, the Tor Project has waived all copyright and related or neighboring rights in the data. Graphs are licensed under a Creative Commons Attribution 3.0 United States License.