Modeling unavailability in peer-to-peer systems

Authors:
Daniel Sadoc Menasche;Antonio A. de Aragao Rocha;Bin Li;Don Towsley;Arun Venkataramani
Affiliations:
University of Massachusetts, Amherst;Federal University of Rio de Janeiro, Brazil;Tsinghua University, China;University of Massachusetts, Amherst;University of Massachusetts, Amherst
Venue:
INFOCOM'09 Proceedings of the 28th IEEE international conference on Computer Communications Workshops
Year:
2009

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Modeling and performance analysis of BitTorrent-like peer-to-peer networks

Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications

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Abstract

In this paper we model peer-to-peer systems where content may become unavailable. First, using Markov Chains we capture the impact of parameters such as the server upload rate and the popularity of the files on the performance of the system. Then, we show the applicability of our model to the problem of optimal bundling. Bundling files together, rather than disseminating them separately, is a possible solution to improve availability in BitTorrent.