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P2P文件共享系统行为特性模型分析

Modeling and analysis on behavioral characteristics of P2P file-sharing system
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摘要 由于P2P文件共享系统具有自组织的特点,其行为特性很大程度上影响了系统可靠性和性能。为了解这种性质,利用统计方法研究了Maze系统用户行为特性分布模型及特点。结论表明,用户上传流量和下载流量、上传带宽和下载带宽可以使用对数正态混合分布来描述,活跃时间和传输时间可以使用对数正态分布来拟合,而请求次数和被请求次数可以使用指数分布和Pareto分布的混合分布来表达。 Due to the properties of self-organization,behavior characteristics affect the reliability and performance in P2P file-sharing system significantly.In order to understand this nature,this paper investigated properties and distribution model of users＇ behavior characteristics in MAZE system through statistical methods.And the results indicate that upload and download traffic,upload and download bandwidth of users＇ can be modeled by lognormal mixture distribution;active time and transmission time of users＇ can be fitted using the lognormal distribution;while the number of requests and the requested number of users＇ are modeled by the mixed exponential distribution and Pareto distribution.
作者 陈宝钢 许勇 胡金龙
机构地区 河南农业大学信息与管理科学学院 华南理工大学广东省计算机网络重点实验室
出处 《计算机应用研究》 CSCD 北大核心 2012年第5期1842-1845,共4页 Application Research of Computers
基金 国家"973"计划资助项目(2003CB314805 2009CB320505)
关键词 P2P文件共享系统 MAZE 行为特性 模型 混合分布 P2P file-sharing system Maze behavior characteristics models mixture distributions
分类号 TP393.07 [自动化与计算机技术—计算机应用技术]
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参考文献11

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计算机应用研究
2012年 第5期

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