Deep Diving into BitTorrent Locality

摘要

A substantial amount of work has recently gone into localizing BitTorrent traffic within an ISP in order to avoid excessive and often times unnecessary transit costs. In this work we aim to answer yet unanswered questions such as: "what is the minimum and the maximum transit traffic reduction across hundreds of ISPs?", "what are the win-win boundaries for ISPs and their users?", "what is the maximum amount of transit traffic that can be localized without requiring fine-grained control of inter-AS overlay connections?", "what is the impact to transit traffic from upgrades of residential broadband speeds?".