Modeling and Performance Analysis of Unstructured P2P Network

How much service performance of searching and transmitting is provided by P2P network for a concrete resource? How much success ratio and recall ratio of resourcepsilas searching of existing P2P network is? Rare research is deepened about those questions. This paper, for unstructured P2P network, construct P2P network queuing model, provide calculating method of service performance of concrete resource, analyze success ratio and recall ratio of resourcepsilas searching, by experiment simulation, discuss the influence of resourcepsilas popularity, Peerpsilas quantity, initial number of objected resource, Peerpsilas average degree and TTL value of protocol to the searching result of concrete resource. We conclude, during the resource searching process, the number of searching result linearly increases with initial number of objected resource, and exponentially increases with Peerpsilas average degree and TTL value, but decreases nonlinearly with Peerpsilas quantity.