Paper Info
Title
Dynamic real-time scheduling strategies for interactive continuous media servers
Abstract
In this paper, we propose and study a dynamic approach to schedule real-time requests in a video-on-demand (VOD) server. Providing quality of service in such servers requires uninterrupted and on-time retrieval of motion video data. VOD services and multimedia applications further require access to the storage devices to be shared among multiple concurrent streams. Most of the previous VOD scheduling approaches use limited run-time, 0 information and thus cannot exploit the potential capacity of the system fully. Our approach improves throughput by making use of run-time information to relax admission control. It maintains excellent quality of service under varying playout rates by observing deadlines and by reallocating resources to guarantee continuous service. It also reduces start-up latency by beginning service as soon as it is detected that deadlines of all real-time requests will be met. We establish safe conditions for greedy admission, dynamic control of disk read sizes, fast initial service, and sporadic services. We conduct thorough simulations over a wide range of buffer capacities, load settings, and over varying playout rates to demonstrate the significant improvements in quality of service, throughput and start-up latency of our approach relative to a static approach.
Year
DOI
Venue
1999
10.1007/s005300050113
Multimedia Syst.
Keywords
Field
DocType
Key words: Video on demand – Continuous media file server – Multimedia scheduling – Admission control – Variable bit-rate
File server,Admission control,Computer science,Scheduling (computing),Server,Quality of service,Computer network,Real-time operating system,Real-time computing,Throughput,Variable bitrate
Journal
Volume
Issue
ISSN
7
2
0942-4962
Citations 
PageRank 
References 
12
0.72
15
Authors
3
Name
Order
Citations
PageRank
Tsun-ping J. To1193.59
Hamidzadeh Babak218424.99
J ToTsun-Ping3120.72