Mapping the Gnutella Network: Properties of Large-Scale Peer-to-Peer Systems and Implications for System Design Authors: Matei Ripeanu Ian Foster Adriana.

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Mapping the Gnutella Network: Properties of Large-Scale Peer-to-Peer Systems and Implications for System Design Authors: Matei Ripeanu Ian Foster Adriana Iamnitchi

Introduction Gnutella network is an open architecture, self-organizing, and highly scalable P2P system. Quantitative evaluations of P2P systems behaviors are important.

Gnutella Protocol: Design Goals 1.Ability to operate in a dynamic environment 2.Performance and Scalability 3.Reliability 4.Anonymity

Gnutella Network Analysis 1.Growth Trends 2.Estimate of Gnutella Generated Traffic 3.Connectivity in Gnutella Network 4.Mapping between Internet Infrastructure and Gnutella Network

Growth Trends  All graphs are from this paper. Memorial Day

Estimate of Gnutella Generated Traffic On average, only 36% of the total traffic (in bytes) is user-generated traffic (Query messages). However, the problem was solved after June 2001 with the newer Gnutella implementation: 92% query messages, 8% PING and others. The estimate traffic for a large Gnutella network is about 1Gbps or 330TB/month: (170,000 connections for 50,000 nodes) X (6Kbps per connection) It amounts to 1.7% of total traffic in US Internet backbones in Dec  All graphs are from this paper.

Connectivity in Gnutella Network  All graphs are from this paper. Power-Law

Internet Infrastructure and Gnutella Network  All graphs are from this paper. Gnutella is completely independent from the Internet structure.

Conclusions Gnutella generates a significant fraction of the total Internet traffic. Node connectivity follows a multi-modal distribution. The topology mismatch between Gnutella and Internet.