A Case Study of Traffic Locality in Internet P2P Live Streaming Systems

With the ever-increasing P2P Internet traffic, recently much attention has been paid to the topology mismatch between the P2P overlay and the underlying network due to the large amount of cross-ISP traffic. Mainly focusing on BitTorrent-like file sharing systems, several recent studies have demonstrated how to efficiently bridge the overlay and the underlying network by leveraging the existing infrastructure, such as CDN services or developing new applicationISP interfaces, such as P4P. However, so far the traffic locality in existing P2P live streaming systems has not been well studied. In this work, taking PPLive as an example, we examine traffic locality in Internet P2P streaming systems. Our measurement results on both popular and unpopular channels from various locations show that current PPLive traffic is highly localized at the ISP level. In particular, we find: (1) a PPLive peer mainly obtains peer lists referred by its connected neighbors (rather than tracker servers) and up ...

• Type: Journal
• Year: 2009
• Where: ICDCS
• Authors: Yao Liu, Lei Guo, Fei Li, Songqing Chen
• Keywords: Distributed And Parallel Computing, ICDCS 2009, Live Streaming, P2P Internet Traffic, Traffic Locality