流媒体服务系统分层存储调度策略

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (3): 710-713.

流媒体服务系统分层存储调度策略

李俊, 周航, 季海波

中国科学技术大学中科院网络传播系统与控制重点实验室, 安徽, 合肥, 230027

收稿日期:2007-11-20 修回日期:2008-03-26 出版日期:2009-03-20 发布日期:2010-01-03
作者简介:李俊(1973- ),男,副教授,博士,主要研究方向为网络传播系统与控制,网络新媒体,先进控制理论与优化.E-mail:Ljun@ustc.edu.cn
基金资助:
国家“863”高技术发展计划项目(2008AA01A317);国家科技支撑计划重大项目(2008BAH28B04);安徽省高校自然科学研究项目(kJ2008A106)资助课题

Hierarchical storage scheduling policy for streaming service systems

LI Jun, ZHOU Hang, JI Hai-bo

Key Lab of Network Communication System and Control, Chinese Academy of Sciences, Univ. of Science and Technology of China, Hefei 230027, China

Received:2007-11-20 Revised:2008-03-26 Online:2009-03-20 Published:2010-01-03

摘要/Abstract

摘要： 针对层次化流媒体服务系统中的存储调度问题,提出了子树虚拟化方法来简化模型分析和存储调度策略设计。采用层次化存储结构下的分布式存储调度策略,通过自上而下的副本分发和自底而上的副本请求两个步骤来实现系统的负载均衡。验证实验表明,采用提出的存储调度策略,可使系统负载达到均衡状态,获得较高的用户请求接受概率。

Abstract: In order to resolve storage scheduling problem in streaming service systems with hierarchical storage architecture,a sub-tree virtualization method is proposed to simplify model analysis and storage scheduling policy design.A distributed storage scheduling policy is proposed to maintain the load-balance of the system through top-down replica distribution and bottom-up replica requesting.Experiment shows that with the proposed storage scheduling policy,the streaming service system achieves a load-balance and high user requests acceptance rate.

中图分类号:

TP37

李俊, 周航, 季海波. 流媒体服务系统分层存储调度策略[J]. Journal of Systems Engineering and Electronics, 2009, 31(3): 710-713.

LI Jun, ZHOU Hang, JI Hai-bo. Hierarchical storage scheduling policy for streaming service systems[J]. Journal of Systems Engineering and Electronics, 2009, 31(3): 710-713.