Modeling and caching of peer-to-peer traffic

Osama Saleh, Mohamed Hefeeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

87 Citations (Scopus)

Abstract

Peer-to-peer (P2P) file sharing systems generate a major portion of the Internet traffic, and this portion is expected to increase in the future. We explore the potential of deploying proxy caches in different Autonomous Systems (ASes) with the goal of reducing the cost incurred by Internet service providers and alleviating the load on the Internet backbone. We conduct a measurement study to model the popularity of P2P objects in different ASes. Our study shows that the popularity of P2P objects can be modeled by a Mandelbrot-Zipf distribution, regardless of the AS. Guided by our findings, we develop a novel caching algorithm for P2P traffic that is based on object segmentation, and partial admission and eviction of objects. Our trace-based simulations show that with a relatively small cache size, less than 10% of the total traffic, a byte hit rate of up to 35% can be achieved by our algorithm, which is close to the byte hit rate achieved by an off-line optimal algorithm with complete knowledge of future requests. Our results also show that our algorithm achieves a byte hit rate that is at least 40% more, and at most triple, the byte hit rate of the common web caching algorithms. Furthermore, our algorithm is robust in face of aborted downloads, which is a common case in P2P systems.

Original languageEnglish
Title of host publicationProceedings - 14th IEEE International Conference on Network Protocols, ICNP 2006
Pages249-258
Number of pages10
DOIs
Publication statusPublished - 1 Dec 2006
Event14th IEEE International Conference on Network Protocols, ICNP 2006 - Santa Barbara, CA, United States
Duration: 12 Nov 200615 Nov 2006

Publication series

NameProceedings - International Conference on Network Protocols, ICNP
ISSN (Print)1092-1648

Other

Other14th IEEE International Conference on Network Protocols, ICNP 2006
CountryUnited States
CitySanta Barbara, CA
Period12/11/0615/11/06

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Saleh, O., & Hefeeda, M. (2006). Modeling and caching of peer-to-peer traffic. In Proceedings - 14th IEEE International Conference on Network Protocols, ICNP 2006 (pp. 249-258). [4110297] (Proceedings - International Conference on Network Protocols, ICNP). https://doi.org/10.1109/ICNP.2006.320218