Utility Maximization in Peer-to-Peer Systems

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Minghua Chen
  • Miroslav Ponec
  • Sudipta Sengupta
  • Jin Li
  • Philip A. Chou


Original languageEnglish
Pages (from-to)169-180
Journal / PublicationPerformance Evaluation Review
Issue number1
Publication statusPublished - Jun 2008
Externally publishedYes


Title2008 ACM SIGMETRICS International Conference on Measurement and Modeling of Computer Systems, SIGMETRICS'08
PlaceUnited States
CityAnnapolis, MD
Period2 - 6 June 2008


In this paper, we study the problem of utility maximization in P2P systems, in which aggregate application-specific utilities are maximized by running distributed algorithms on P2P nodes, which are constrained by their uplink capacities. This may be understood as extending Kelly's seminal framework from single-path unicast over general topology to multi-path multicast over P2P topology, with network coding allowed. For certain classes of popular P2P topologies, we show that routing along a linear number of trees per source can achieve the largest rate region that can be possibly obtained by (multi-source) network coding. This simplification result allows us to develop a new multi-tree routing formulation for the problem. Despite of the negative results in literature on applying Primal-dual algorithms to maximize utility under multi-path settings, we have been able to develop a Primal-dual distributed algorithm to maximize the aggregate utility under the multi-path routing environments. Utilizing our proposed sufficient condition, we show global exponential convergence of the Primal-dual algorithm to the optimal solution under different P2P communication scenarios we study. The algorithm can be implemented by utilizing only end-to-end delay measurements between P2P nodes; hence, it can be readily deployed on today's Internet. To support this claim, we have implemented the Primal-dual algorithm for use in a peer-assisted multi-party conferencing system and evaluated its performance through actual experiments on a LAN testbed and the Internet. Copyright 2008 ACM.

Citation Format(s)

Utility Maximization in Peer-to-Peer Systems. / Chen, Minghua; Ponec, Miroslav; Sengupta, Sudipta; Li, Jin; Chou, Philip A.

In: Performance Evaluation Review, Vol. 36, No. 1, 06.2008, p. 169-180.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review