Understanding peer exchange in BitTorrent systems

Di Wu; Prithula Dhungel; Xiaojun Hei; Chao Zhang; Keith W. Ross

doi:10.1109/P2P.2010.5569967

Understanding peer exchange in BitTorrent systems

Di Wu, Prithula Dhungel, Xiaojun Hei, Chao Zhang, Keith W. Ross

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Peer Exchange (PEX), in which peers directly exchange with each other lists of active peers in the torrent, has been widely implemented in modern BitTorrent clients for decentralized peer discovery. However, there is little knowledge about the behavior of PEX in operational systems. In this paper, we perform both passive measurements and Planetlab experiments to study the impact and properties of BitTorrent PEX.We first study the impact of PEX on the download efficiency of BitTorrent. We observe that PEX can significantly reduce the download time for some torrents. We then analyze the freshness, redundancy and spread speed of PEX messages. Finally, we also conduct large-scale Planetlab experiments to understand the impact of PEX on the overlay properties of BitTorrent.

Original language	English (US)
Title of host publication	2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Proceedings
DOIs	https://doi.org/10.1109/P2P.2010.5569967
State	Published - 2010
Event	2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Delft, Netherlands Duration: Aug 25 2010 → Aug 27 2010

Publication series

Name	2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Proceedings

Other

Other	2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010
Country/Territory	Netherlands
City	Delft
Period	8/25/10 → 8/27/10

Keywords

BitTorrent
Measurement
Peer exchange

ASJC Scopus subject areas

Computational Theory and Mathematics
Computer Science Applications
Theoretical Computer Science

Access to Document

10.1109/P2P.2010.5569967

Cite this

Understanding peer exchange in BitTorrent systems. / Wu, Di; Dhungel, Prithula; Hei, Xiaojun et al.
2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Proceedings. 2010. 5569967 (2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Wu, D, Dhungel, P, Hei, X, Zhang, C & Ross, KW 2010, Understanding peer exchange in BitTorrent systems. in 2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Proceedings., 5569967, 2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Proceedings, 2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010, Delft, Netherlands, 8/25/10. https://doi.org/10.1109/P2P.2010.5569967

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title = "Understanding peer exchange in BitTorrent systems",

abstract = "Peer Exchange (PEX), in which peers directly exchange with each other lists of active peers in the torrent, has been widely implemented in modern BitTorrent clients for decentralized peer discovery. However, there is little knowledge about the behavior of PEX in operational systems. In this paper, we perform both passive measurements and Planetlab experiments to study the impact and properties of BitTorrent PEX.We first study the impact of PEX on the download efficiency of BitTorrent. We observe that PEX can significantly reduce the download time for some torrents. We then analyze the freshness, redundancy and spread speed of PEX messages. Finally, we also conduct large-scale Planetlab experiments to understand the impact of PEX on the overlay properties of BitTorrent.",

keywords = "BitTorrent, Measurement, Peer exchange",

author = "Di Wu and Prithula Dhungel and Xiaojun Hei and Chao Zhang and Ross, {Keith W.}",

year = "2010",

doi = "10.1109/P2P.2010.5569967",

language = "English (US)",

isbn = "9781424471416",

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TY - GEN

T1 - Understanding peer exchange in BitTorrent systems

AU - Wu, Di

AU - Dhungel, Prithula

AU - Hei, Xiaojun

AU - Zhang, Chao

AU - Ross, Keith W.

PY - 2010

Y1 - 2010

N2 - Peer Exchange (PEX), in which peers directly exchange with each other lists of active peers in the torrent, has been widely implemented in modern BitTorrent clients for decentralized peer discovery. However, there is little knowledge about the behavior of PEX in operational systems. In this paper, we perform both passive measurements and Planetlab experiments to study the impact and properties of BitTorrent PEX.We first study the impact of PEX on the download efficiency of BitTorrent. We observe that PEX can significantly reduce the download time for some torrents. We then analyze the freshness, redundancy and spread speed of PEX messages. Finally, we also conduct large-scale Planetlab experiments to understand the impact of PEX on the overlay properties of BitTorrent.

AB - Peer Exchange (PEX), in which peers directly exchange with each other lists of active peers in the torrent, has been widely implemented in modern BitTorrent clients for decentralized peer discovery. However, there is little knowledge about the behavior of PEX in operational systems. In this paper, we perform both passive measurements and Planetlab experiments to study the impact and properties of BitTorrent PEX.We first study the impact of PEX on the download efficiency of BitTorrent. We observe that PEX can significantly reduce the download time for some torrents. We then analyze the freshness, redundancy and spread speed of PEX messages. Finally, we also conduct large-scale Planetlab experiments to understand the impact of PEX on the overlay properties of BitTorrent.

KW - BitTorrent

KW - Measurement

KW - Peer exchange

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DO - 10.1109/P2P.2010.5569967

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T3 - 2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Proceedings

BT - 2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010 - Proceedings

T2 - 2010 IEEE 10th International Conference on Peer-to-Peer Computing, P2P 2010

Y2 - 25 August 2010 through 27 August 2010

ER -

Understanding peer exchange in BitTorrent systems

Abstract

Publication series

Other

Keywords

ASJC Scopus subject areas

Access to Document

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