On prioritizing the delivery of short videos clips

In interactive video-on-demand (IVOD) applications, service availability and response times are more visible to the user than the underlying data throughput. In this paper, a resource model for incoming requests is proposed. Based on the resource model, the performance of several admission policies for short video requests is evaluated in terms of probability of admission, queuing delay, and throughput. Simulation results show that prioritizing requests can increase the number of admitted requests and reduce the queuing time. The technique proposed in the paper is independent of the underlying disk scheduling technique, hence it can be employed to improve the user-perceived performance of VOD servers under various system loading conditions.