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Dynamic Swarm Management for Improved BitTorrent Performance
KTH, School of Electrical Engineering (EES), Communication Networks.ORCID iD: 0000-0002-4876-0223
Linköping University.
2009 (English)In: International Workshop on Peer-to-peer Systems, USENIX , 2009Conference paper, Published paper (Refereed)
Abstract [en]

BitTorrent is a very scalable _le sharing protocol that utilizes the upload bandwidth of peers to of_oad the original content source. With BitTorrent, each _le is split into many small pieces, each of which may be downloaded from different peers. While BitTorrent allows peers to effectively share pieces in systems with suf_cient participating peers, the performance can degrade if participation decreases. Using measurements of over 700 trackers, which collectively maintain state information of a combined total of 2.8 million unique torrents, we identify many torrents for which the system performance can be signi_cantly improved by re-allocating peers among the trackers. We propose a light-weight distributed swarm management algorithm that manages the peer torrents while ensuring load fairness among the trackers. The algorithm achieves much of its performance improvements by identifying and merging small swarms, for which the performance is more sensitive to _uctuations in the peer participation, and allows load sharing for large torrents.

Place, publisher, year, edition, pages
USENIX , 2009.
National Category
Telecommunications
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-47481OAI: oai:DiVA.org:kth-47481DiVA: diva2:455479
Conference
International Workshop on Peer-to-peer Systems
Note
QC 20111114Available from: 2011-11-10 Created: 2011-11-10 Last updated: 2011-11-15Bibliographically approved

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Other links

http://www.ee.kth.se/~gyuri/Pub/dan-Iptps09.pdf

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Dán, György

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