- Apollo is a monitoring system that taps into the Bittorrent (BT) ecosystem and efficiently and discreetly collects BT related performance data without requiring the cooperation of the end-users.
Using Apollo, we collect (a) different traffic engineering policies, year long data capturing the download where BT users can experience more than 50% degradation of their performance across ISPs in the same country;
(b) we show that there exist significant differences in the end user perceived performance. It is not atypical to have over 100% improvement in the Download speed by switching ISPs in many countries;
(c) we show and quantify the effect of bugs and differences among BT clients. For instance, we show that there can be up to a 100% improvement between release candidates of a known BT client, and stable versions can be problematic, impacting the Download speeds for up to 20% for some ISPs;
(d) Finally, we show how Apollo’s measurement have out-of-the-box applications by showing how measurements can be used to boost the download speed of BT clients.
