Experimental assessment of BitTorrent completion time in heterogeneous TCP/uTP swarms

Claudio Testa 1 Dario Rossi 1 Ashwin Rao 2 Arnaud Legout 2
2 PLANETE - Protocols and applications for the Internet
Inria Grenoble - Rhône-Alpes, CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : BitTorrent, one of the most widespread used P2P application for file-sharing, recently got rid of TCP by introducing an application-level congestion control protocol named uTP. The aim of this new protocol is to efficiently use the available link capacity, while minimizing its interference with the rest of user traffic (e.g., Web, VoIP and gaming) sharing the same access bottleneck. In this paper we perform an experimental study of the impact of uTP on the torrent completion time, the metric that better captures the user experience. We run BitTorrent applications in a flash crowd scenario over a dedicated cluster platform, under both homogeneous and heterogeneous swarm population. Experiments show that an all-uTP swarms have shorter torrent download time with respect to all-TCP swarms. Interestingly, at the same time, we observe that even shorter completion times can be achieved under careful mixtures of TCP and uTP traffic.
Type de document :
Pré-publication, Document de travail
14 pages, under submission. 2011
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Contributeur : Ist Rennes <>
Soumis le : mardi 15 mai 2012 - 14:43:16
Dernière modification le : mercredi 11 avril 2018 - 01:55:04

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  • HAL Id : hal-00697483, version 1
  • ARXIV : 1110.5068



Claudio Testa, Dario Rossi, Ashwin Rao, Arnaud Legout. Experimental assessment of BitTorrent completion time in heterogeneous TCP/uTP swarms. 14 pages, under submission. 2011. 〈hal-00697483〉



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