视频服务器中多网络I/O的调度与接纳控制  

Scheduling and Admission Control in Video Servers with Multi-Network I/O

作　　者：谢建国[1] 陈建二[1] 陈松乔[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083

出　　处：《软件学报》2002年第8期1735-1740,共6页Journal of Software

基　　金：~~国家自然科学基金资助项目(69928201)

摘　　要：在视频服务器中,由于网络I/O带宽比磁盘I/O带宽相对丰富而未得到研究者的重视,但当服务达到一定的规模、网络输出成为瓶颈时,在多网络I/O情况下,网络输出的量化计算则不可避免.着重探讨了视频服务器在多网络I/O并行输出的情况下,如何进行最大输出调度的问题,给出了3个调度算法及相应的接纳计算公式,特别是一个带缓冲的优化调度模型.实验结果显示,调度模型及规划性能是优越而有效的.该项工作对视频服务器的调度设计、资源的有效配置具有指导作用.Network I/O scheduling in video servers has been mostly neglected because in general the bandwidth of network I/O is richer than that of disk I/O. However, recent applications have indicated that when the scale of service increases to a certain level, network I/O bandwidth will become a bottleneck and the problem of network I/O scheduling will be much more crucial. This paper focuses on scheduling video data block in video servers with multi-network I/O. Three scheduling algorithms and the corresponding admission control formulas are presented, especially a scheduling optimal scheme with buffers is proposed. Experimental results show that the scheduling scheme is effective and efficient. The results can be directly used in server network I/O scheduling and efficient configuration of server resources.

关 键 词：视频服务器 多网络I/O 调度 接纳控制 

分 类 号：TP368.5[自动化与计算机技术—计算机系统结构]