NDLI: Pushing bittorrent locality to the limits (2008).

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Pushing bittorrent locality to the limits (2008).

Content Provider	CiteSeerX
Author	Blond, Stevens Le Legout, Arnaud Dabbous, Walid
Abstract	Peer-to-peer (P2P) locality has recently raised a lot of interest in the community. Indeed, whereas P2P content distribution enables financial savings for the content providers, it dramatically increases the traffic on inter-ISP links. To solve this issue, the idea to keep a fraction of the P2P traffic local to each ISP was introduced a few years ago. Since then, P2P solutions exploiting locality have been introduced. However, several fundamental issues on locality still need to be explored. In particular, how far can we push locality, and what is, at the scale of the Internet, the reduction of traffic that can be achieved with locality? In this paper, we perform extensive experiments on a controlled environment with up to 10000 BitTorrent clients to evaluate the impact of high locality on inter-ISP links traffic and peers download completion time. We introduce two simple mechanisms that make high locality possible in challenging scenarios and we show that we save up to several orders of magnitude inter-ISP traffic compared to traditional locality without adversely impacting peers download completion time. In addition, we crawled 214 443 torrents representing 6113 224 unique peers spread among 9605 ASes. We show that whereas the torrents we crawled generated 11.6 petabytes of inter-ISP traffic, our locality policy implemented for all torrents would have reduced the global inter-ISP traffic by 40%. 1.
File Format	PDF
Publisher Date	2008-01-01
Access Restriction	Open
Subject Keyword	Bittorrent Locality High Locality Financial Saving Inter-isp Link Traffic Several Fundamental Issue P2p Solution Completion Time Magnitude Inter-isp Traffic Simple Mechanism Global Inter-isp Traffic Content Provider Bittorrent Client Extensive Experiment Several Order Inter-isp Traffic Peer Download Completion Time P2p Traffic Whereas P2p Content Distribution Inter-isp Link Locality Policy Traditional Locality Unique Peer
Content Type	Text

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