基于两阶段服务与重试空间的故障可修P2P网络系统分析  

Analysis of Fault-Repairable P2P Network System Based on Two-Phase Service and Retry Space

作　　者：张羽康 

机构地区：[1]燕山大学,河北 秦皇岛

出　　处：《计算机科学与应用》2023年第3期319-333,共15页Computer Science and Application

摘　　要：对于移动P2P网络这样高分布式异构的环境而言,为了较好地实现各终端系统协同合作和资源共享的目标,维护和提高网络的性能,构建一个性能良好的网络拓扑是研究的关键,本文针对这一特性,基于半分布式拓扑与完全分布式拓扑相结合的混合移动网络模型,建立了带有重试空间与工作故障的两阶段排队模型。利用拟生灭过程、矩阵几何解方法和Gauss-Seidel迭代法得到了网络模型稳态下的概率分布,给出了两阶段平均节点数等性能指标的表达式。利用编程软件进行数值试验,分析了参数对各指标的影响,通过构造系统单位时间平均费用函数与社会效用函数,求解最优参数,为移动P2P网络模型提供决策依据。For a highly distributed heterogeneous environment such as mobile P2P network, in order to better achieve the goal of cooperation and resource sharing of various terminal systems, maintain and improve the performance of the network, building a network topology with good performance is the key to research, in view of this feature, based on the hybrid mobile network model combining semi-distributed topology and fully distributed topology, a two-stage queuing model with retry space and working fault is established. The probability distribution under steady-state of the net-work model is obtained by using the mimic-life and extinction process, the matrix geometric solution method and the Gauss-Seidel iterative method, and the expression of performance indicators such as the average number of nodes in the two stages is given. The numerical experiment is carried out by programming software, the influence of parameters on each index is analyzed, and the optimal parameters are solved by constructing the average cost function per unit time and the social utility function of the system, which provides a decision-making basis for the mobile P2P net-work model.

关 键 词：P2P网络 M/M/C排队 两阶段服务 矩阵几何解方法 社会效用函数 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]