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首页> 外文期刊>Electronics and Communications in Japan / 電子情報通信. Part 1, Communications >Special Issue on Internet Architecture Technology Papers: A Nonprobabilistic Server Selection Method Based on Periodically Obtained Load Information for Web Server Clusters
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Special Issue on Internet Architecture Technology Papers: A Nonprobabilistic Server Selection Method Based on Periodically Obtained Load Information for Web Server Clusters

机译：Internet体系结构技术论文特刊：一种基于定期获取的负载信息的Web服务器群集的非概率服务器选择方法

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摘要

For a system comprised of multiple Web servers that provide the same content, this paper proposes a method for the dynamic selection of servers that process requests, based on periodically obtained load information on servers. Previously proposed methods select servers probabilistically based on the weights calculated from server load information, and consequently, a server with a heavy load is selected by chance, often resulting in decreased performance. In contrast, the present method, instead of employing probabilistic server selection, selects servers by a round-robin scheme after eliminating any difference in load among the servers. A comparison of performance based on simulation studies with the conventional method indicates that the proposed method is immune to the impact of the intervals at which load information is acquired or the number of servers involved, and that it produces a low average response time even under heavy load conditions.
机译：对于由多个提供相同内容的Web服务器组成的系统，本文提出了一种基于定期获取的服务器负载信息，动态选择处理请求的服务器的方法。先前提出的方法基于从服务器负载信息计算出的权重概率地选择服务器，因此，偶然选择了负载较重的服务器，这常常导致性能下降。相反，在消除服务器之间的负载的任何差异之后，本方法代替采用概率服务器选择，而是通过轮询方案来选择服务器。基于仿真研究的性能与常规方法的性能比较表明，该方法不受获取负载信息的时间间隔或所涉及服务器数量的影响，即使在重负载下，其平均响应时间也很短负载条件。

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