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一种流媒体文件的分块放置方法
引用本文:吴松,金海,邹德清.一种流媒体文件的分块放置方法[J].计算机学报,2006,29(3):500-507.
作者姓名:吴松  金海  邹德清
作者单位:华中科技大学计算机学院,武汉,430074
基金项目:中国科学院资助项目;国家科技攻关项目
摘    要:在研究了文件内部访问倾向性特征的基础上,提出了一种新型的流媒体文件分块放置策略.它能够有效消除流媒体访问倾向性对服务器性能的负面影响,提高流媒体服务器的服务能力.

关 键 词:流媒体  访问倾向性  数据分块  存储系统  负载均衡
收稿时间:2003-11-12
修稿时间:2003-11-122005-12-05

A Data Placement Strategy for Parallel Streaming Servers
WU Song,JIN Hai,ZOU De-Qing.A Data Placement Strategy for Parallel Streaming Servers[J].Chinese Journal of Computers,2006,29(3):500-507.
Authors:WU Song  JIN Hai  ZOU De-Qing
Affiliation:Computer School, Huazhong University of Science and Technology, Wuhan 430074
Abstract:This paper studies the characteristics of the intra-video skewness by a trace-based analysis. The analysis results show that the intra-video skewness probably leads to serious performance decline in case of traditional data placement in streaming servers. In order to solve this problem, the authors propose two novel data placement strategies. The first one is Symmetrical Pair Scheme. It can relieve the negative impact of the intra-video skewness to a great extent without extra system overhead. The second one is Symmetrical Replication Pair Scheme derived from the first method. It trades a little shows that streaming servers with performance improvement. redundant data for better system performance. The analysis the novel data placement strategies can obtain obvious system
Keywords:streaming media  video popularity  data striping  storage systems load balancing
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