一种基于全局复合评价算法的Super Peer选择机制  

Selection mechanism of Super Peers based on global complex evaluation algorithm

作　　者：徐小龙[1] 王汝传[1,2] 

机构地区：[1]南京邮电大学计算机学院,南京210003 [2]南京大学计算机软件新技术国家重点实验室,南京210093

出　　处：《东南大学学报（自然科学版）》2009年第1期23-27,共5页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(60573141,60773041);国家高技术研究发展计划(863计划)资助项目(2006AA01Z201,2006AA01Z439,2007AA01Z404,2007AA01Z478);江苏省高技术研究计划资助项目(BG2006001);南京市高科技资助项目(2007软资127);现代通信国家重点实验室基金资助项目(9140C1105040805);江苏省计算机信息处理技术重点实验室基金资助项目(kjs06006)

摘　　要：提出一种基于全局复合评价算法的Super Peer选择机制,该机制以主客观相结合的科学依据从多方面自动选择P2P网络中稳定可靠、长期在线且积极提供服务的大量高性能Peer担当Super Peer职责,从而可以极大地扩充Super Peer的数量,使得全分布式结构化拓扑和半分布式拓扑结构可以在同一个P2P网络中有效地互补并存.全局复合评价算法综合采用在线活跃情况、任务完成能力和平均通信速率这3个指标来作为Super Peer的选择标准.构建了P2P仿真实验系统环境,验证所提出的算法和相应机制的可行性和实用价值.A new selection mechanism of Super Peer based on the global complex evaluation algorithm is proposed in this paper to automatically choose stable and reliable peers,which are online with long time and provide services actively,from P2P（peer-to-peer） network to be Super Peer.In this way,the amount of Super Peer is expanded greatly so that decentralized structured topology and partially decentralized topology are able to coexist in one P2P network and effectively complement each other.The global complex evaluation algorithm comprehensively adopts three indicators as the Super Peer selection criteria,i.e.,online activity,the ability to complete tasks and the average rate of communication.The P2P system simulation environment is also constructed to verify the proposed algorithm and the corresponding mechanisms for their feasibility and practical value.

关 键 词：对等计算 超级节点 选择机制 评价算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]