Scalable multimedia servers

Krikelis, A.

doi:10.1109/4434.736395

Cited by 9 publications

(6 citation statements)

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“…Equation (45) suggests that it may be possible to have a different c for each server. Although this is a valid concern, such an assumption requires modifications to (15) to (20) and associated solutions that are beyond the scope of this paper.…”

Section: ) the Outer Loop Terminates When Eithermentioning

confidence: 97%

“…Minimizing AT suggests solving (15) to (20) using the equality sign. Subtracting the equation governing the jth installment of S i server, from the equation governing the jth installment of S iþ1 , we obtain 8 i ¼ 0; .…”

Section: Multi-installment Casementioning

confidence: 99%

“…Since network infrastructure is more or less a given in the public Internet, the main research focus has fallen on serverside optimizations, i.e., maximizing a server's ability to accommodate requests while at the same time satisfying the real-time deadlines imposed by the nature of continuous media documents. To this end, many techniques have been proposed for the storage and retrieval of video from disks or arrays of disks [11], [15], [27], the replication of content [38], and also for the policies used to serve each request [9].…”

Section: Related Workmentioning

confidence: 99%

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Optimized distributed delivery of continuous-media documents over unreliable communication links

Barlas

Veeravalli

2005

IEEE Trans. Parallel Distrib. Syst.

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Video-on-Demand (VoD) applications place very high requirements on the delivery medium. High-quality services should provide for a timely delivery of the data-stream to the clients plus a minimum of playback disturbances. The major contributions of this paper are that it proposes a multiserver, multi-installment (MSMI) solution approach (sending the document in several installments from each server) to the delivery problem and achieves a minimization of the client waiting time, also referred to as the access time (AT ) or start-up latency in the literature. By using multiple spatially distributed servers, we are able to exploit slow connections that would otherwise prevent the deployment of Video-On-Demand-like services, to offer such services in an optimal manner. Additionally, the delivery and playback schedule that is computed by our approach is loss-aware in the sense that it is flexible enough to accommodate packet losses without interrupts. The mathematical framework presented covers both computation and optimization problems associated with the delivery schedule, offering a complete set of guidelines for designing MSMI VoD services. The optimizations presented include the ordering of the servers and determining the number of installments based on the packet-loss probabilities of the communication links. Our analysis guarantees the validity of a delivery schedule recommended by the system by providing a percentage of confidence for an uninterrupted playback at the client site. This, in a way, quantifies the degree of quality of service rendered by the system and the MSMI strategy proposed. The paper is concluded by a rigorous simulation study that showcases the substantial advantages of the proposed approach and explores how optimization of the schedule parameters affects performance.

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Section: ) the Outer Loop Terminates When Eithermentioning

confidence: 97%

Section: Multi-installment Casementioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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Optimized distributed delivery of continuous-media documents over unreliable communication links

Barlas

Veeravalli

2005

IEEE Trans. Parallel Distrib. Syst.

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“…A MOD server consists of three subsystems (see Figure 2): The control subsystm for managing the client requests, the communication subsystem moves the data from the server to the clients, and the storage subsystem manages the storage and retrieval of data from storage disks [6]. The users and the server are connected through an ATM network.…”

Section: Design and Implementation Of The Server Architecturementioning

confidence: 99%

Popularity-independent multimedia-on-demand server model

Mikki

Yim

Jung

Proceedings 24th Annual International Computer Software and Applications Conference. COMPSAC2000

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In this paper we develop a VHDL-based popularity-independent multimedia-on-demand distributed server model. The three server subsystems: The control subsystem, the communication subsystem and the storage subsystem are modeled. The communication subsystem is designed as an interconnection nerwork with meshed-pipe structure and delivers packets to their destination through the sub-optimal shortest path. A model for the video trafic generated at the server side for modeling the data sent to the users is also presented.We use simulation experiments to validate our modeling approach and compare the results with rhose obtained using OPNET simularion tool. The comparison results show that our approach is accurate compared to the simulation results. Our modeling approach also shows that using VHDL (Very high speed integrated circuits Hardware Description Language) in modeling digital systems is powerful and accurate.

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“…Current Movie on Demand systems can be classified into centralized [2,3] and distributed [4,5] architectures.…”

Section: Related Workmentioning

confidence: 99%