分布式VoD系统的并发推动调度算法研究  

Study of Parallel Impetus Scheduling Algorithm in Distributed VoD System

作　　者：陈嫄玲[1] 梁书斌[2] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院,郑州450002 [2]河南师范大学计算机与信息技术学院,河南新乡453007

出　　处：《河南师范大学学报（自然科学版）》2007年第3期36-38,59,共4页Journal of Henan Normal University(Natural Science Edition)

基　　金：河南省科技攻关项目(0524220074)

摘　　要：从服务器缓冲要求、客户端缓冲要求和系统响应时间等3个关键性能指标来评估分布式VoD系统中的并发推动调度算法,并针对其系统扩展的局限性,讨论了改进算法.有效降低对客户端缓存大小的要求并减少系统的响应时间,此外进一步改进可使客户端缓存大小和预填充延迟跟服务器数目无关,以达到扩展系统的目的.From the server cushion request, the client cushion request and the system response time three essential performance indices had appraised in the distributed VoD system parallel impetus scheduling algorithm, and aimed at the limitation which its system expands, discussed the improvement algorithm. Reduces effectively to the client buffer size request and reduces the system response time, in addition, further improvements may cause the client buffer size and the pre-packs delay with the server number irrelevant, achieves the goal of the expansion system.

关 键 词：分布式VOD系统 并发推动 抖动 环型缓冲 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]