The Effect of Heterogeneous Link Capacities in BitTorrent-Like File Sharing Systems

  • Authors:
  • Francesca Lo Piccolo;Giovanni Neglia;Giuseppe Bianchi

  • Affiliations:
  • Università degli Studi di Palermo;Università degli Studi di Palermo;Università degli Studi di Roma - Tor Vergata

  • Venue:
  • HOT-P2P '04 Proceedings of the 2004 International Workshop on Hot Topics in Peer-to-Peer Systems
  • Year:
  • 2004

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Abstract

Despite the recent research efforts on Peer-to-Peer networks modeling and performance evaluation, very few literature results have appeared on what concerns the effect of network characteristics on the overlay peer-to-peer services. Goal of this paper is to contribute in assessing the effect of different access link capacities on performance of a Peer-to-Peer file sharing system. In order to make the problem tractable, an analytical model referring to a simplified network model with access links belonging to two different capacity classes is developed. Our preliminary results seem to imply that, depending on evaluation metrics, bandwidth heterogeneity can have a positive effect on content propagation among peers.