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arXiv 1009.4563cs.NI
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一种基于集群的P2P内容分发负载均衡复制结构

A Cluster Based Replication Architecture for Load Balancing in Peer-to-Peer Content Distribution

S. Ayyasamy, S. N. Sivanandam

摘要:

在P2P系统中,大量的数据自然地分散在大量的对等体上。但是,控制初始数据分布是非常困难的,因为每个用户都有与其他用户共享任何数据的自由。通过复制技术将负载分散到多个服务器上,可以提高系统的可扩展性。利用复制技术,大规模内容分发系统得到了广泛的改进。通过在地理上增加信息源,可以使所需的内容更接近客户端,这反过来又减少了访问延迟和网络流量。除此之外,由于P2P环境的内在动态性,不能期望静态数据分布来保证良好的负载均衡。如果热点节点成为瓶颈节点,则会导致用户响应时间的增加和系统性能的显著下降。因此,在这种情况下,有效的负载均衡机制是必要的,它可以通过智能数据复制有效地实现。在本文中,我们提出了一个基于集群的复制体系结构的负载平衡对等内容分发系统。除了智能副本放置技术之外,它还包括有效的负载均衡技术。在智能副本放置技术中,节点根据其权重向量(包括可用容量、CPU速度、访问延迟和内存大小)被分为强簇和弱簇。为了在整个系统中实现完全的负载均衡,提出了一种集群内和集群间的负载均衡算法。我们能够表明,我们提出的架构达到更少的延迟和更好的吞吐量,减少带宽的使用,通过模拟结果。

英文摘要:

In P2P systems, large volumes of data are declustered naturally across a large number of peers. But it is very difficult to control the initial data distribution because every user has the freedom to share any data with other users. The system scalability can be improved by distributing the load across multiple servers which is proposed by replication. The large scale content distribution systems were improved broadly using the replication techniques. The demanded contents can be brought closer to the clients by multiplying the source of information geographically, which in turn reduce both the access latency and the network traffic. In addition to this, due to the intrinsic dynamism of the P2P environment, static data distribution cannot be expected to guarantee good load balancing. If the hot peers become bottleneck, it leads to increased user response time and significant performance degradation of the system. Hence an effective load balancing mechanism is necessary in such cases and it can be attained efficiently by intelligent data replication. In this paper, we propose a cluster based replication architecture for load-balancing in peer-to-peer content distribution systems. In addition to an intelligent replica placement technique, it also consists of an effective load balancing technique. In the intelligent replica placement technique, peers are grouped into strong and weak clusters based on their weight vector which comprises available capacity, CPU speed, access latency and memory size. In order to achieve complete load balancing across the system, an intracluster and inter-cluster load balancing algorithms are proposed. We are able to show that our proposed architecture attains less latency and better throughput with reduced bandwidth usage, through the simulation results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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