Association for Computing Machinery
Tor is an onion routing network that protects users' privacy by relaying traffic through a series of nodes that run tor software. As a consequence of the anonymity that it provides, tor is used for many purposes. According to several measurement studies, a small fraction of users using tor for bulk downloads account for the majority of traffic on the tor network. These bulk downloads cause delays for interactive traffic, as many different circuits share bandwidth across each pair of nodes. The resulting delays discourage people from using tor for normal web activity.