摘要
提出了一种网上教学平台上基于文件内外访问倾向性的视频流调度策略.描述了系统架构、存储策略、调度策略与算法.通过对现有流调度算法的研究,结合视频文件内外访问倾向性,提出了一种新的流调度算法.理论分析和仿真实验表明:该算法可有效提高系统吞吐量和热门影片的命中率,降低系统平均等待时间.
This paper studied the characteristics of the intra-video and extra-video tendentious ness. Through a deep research on streaming delivery algorithm, we present a novel streaming delivery algorithm. This new method allows every client that request the same video to share a channel, so it can supply instantaneous video-on-demand services. The experimental results show that the proposed algorithm is effective in refusal-ratio, the average waiting-time and the hit probability of the hot movies.
出处
《大连交通大学学报》
CAS
2007年第4期64-67,共4页
Journal of Dalian Jiaotong University
关键词
内部访问倾向性
外部访问倾向性
存储策略
调度策略
intra-video tendentiousness
extra-video tendentiousness
scheduling algorithm placement policy
