基于VoD系统批处理阈值的调度分析

Scheduling Analysis Based on the VoD System Batch Processing Value

本文运用排队论的方法对视频服务系统批处理情形下的部分指标进行了定性分析,分析了系统服务状态;以用户等待平均数和系统吞吐量为主要考察对象,给出了系统吞吐量、用户等待平均数、批处理阈值、系统服务强度、用户耐心程度的关系;阐述了用户时延受阈值、服务强度及用户耐心程度的影响。仿真结果表明,这也是一种节省资源、提高视频服务水平的有效途径。

With the queueing theory, the paper conducts a qualitative analysis to some of the guidelines in video service systems for batching, and analyses the system service status in different scenarioes. With the average number of waiting customers and system throughput as the main targets to be studied, we give the relationships between system throughput, the average number of waiting customers, batching threshold value, system service degree and customer patience degree. We also elaborate the effect on customer delay from the threshold value,service degree and customer patience degree. Simualtion results show that this is also a way of saving the resources and enhancing the video service level.