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Playing with the Bandwidth Conservation Law

Abstract : We investigate performance bounds of P2P systems by application of the law of bandwidth conservation. This approach is quite general and allows us to consider various sharing systems such as fixed-rate streaming, VoD-type streaming, and elastic file sharing. Starting from a general law of bandwidth conservation, we consider several specific cases that apply to various P2P systems. For dynamic systems with a stationary arrival process, we show that simple seeding policies result in regimes where the download rates are arbitrarily fast. We consider a case with equal download rate among all peers as well as cases where the download rate is a function of upload rates, inspired by BitTorrent's tit-for-tat policy. In particular, we show that the sustainable proportion of free-riders is closely related to the tit-for-tat parameter.
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Submitted on : Thursday, February 9, 2012 - 6:30:17 PM
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Farid Benbadis, Fabien Mathieu, Nidhi Hegde, Diego Perino. Playing with the Bandwidth Conservation Law. P2P '08 - Eighth International Conference on Peer-to-Peer Computing - 2008., Sep 2008, Aachen, Germany. pp.140 -149, ⟨10.1109/P2P.2008.50⟩. ⟨hal-00668531⟩



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