On the design of a low-cost video-on-demand storage system

Özden, Banu; Rastogi, Rajeev; Silberschatz, Abraham

doi:10.1007/s005300050011

Cited by 56 publications

(17 citation statements)

References 17 publications

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“…in Refs. [1,3,6,7,11,15,17,19,21,22,30]). The most popular per-stream buffering implementation, Double Buffering, is based on the co-operation of two buffers of identical size allocated to each client.…”

Section: Scheduling Of Server Resourcesmentioning

confidence: 99%

Efficient memory management in video on demand servers

García-Martínez

Fernández-Conde

Vina

2000

Computer Communications

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In this article we present, analyse and evaluate a new memory management technique for video-on-demand servers. Our proposal, Memory Reservation Per Storage Device (MRPSD), relies on the allocation of a fixed, small number of memory buffers per storage device. Selecting adequate scheduling algorithms, information storage strategies and admission control mechanisms, we demonstrate that MRPSD is suited for the deterministic service of variable bit rate streams to intolerant clients. MRPSD allows large memory savings compared to traditional memory management techniques, based on the allocation of a certain amount of memory per client served, without a significant performance penalty. ᭧

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Section: Scheduling Of Server Resourcesmentioning

confidence: 99%

Efficient memory management in video on demand servers

García-Martínez

Fernández-Conde

Vina

2000

Computer Communications

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“…[13] proposed a cluster placement scheme for disk retrievals on a VOD server. Ozden et al [19] proposed a data allocation scheme which is close to that in [13]. The focus of the cluster placement scheme of data layout is to reduce the seek overhead from the entire disk area to a smaller range, which consists of multiple cylinders.…”

Section: Introductionmentioning

confidence: 98%

“…The focus of the cluster placement scheme of data layout is to reduce the seek overhead from the entire disk area to a smaller range, which consists of multiple cylinders. However, neither [13] nor [19] considered the data layout within a cluster.…”

Section: Introductionmentioning

confidence: 99%

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A circular skip-cluster scheme to support video-on-demand services

Chang

Shih

1999

Multimedia Systems

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The major drawback of the existing cluster placement scheme is the long response time caused by admission control if the number of clusters and the number of users are large. A circular skip-cluster placement scheme is proposed to reduce the size of the data buffer as well as the system response time. Furthermore, the popularity of each video is different in the real world. We propose a new popularitybased data allocation scheme to allocate data units within a cluster such that the corresponding data units of these popular videos are stored in those cylinders at one end of each cluster. Due to a higher spatial locality within these hot cylinders, some data units requested by the users are stored in the same cylinder such that one seek operation, one rotation, and one transfer operation are required to retrieve these data units. Therefore, the time required to retrieve data for these requests can be reduced, thus also reducing the system response time. Based on our results, the buffer size and the system response time can be reduced by half or more. These findings are essential for constructing video-on-demand systems that provide satisfactory performance.

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“…With the advancement of broadband networking technology and the growth of processor speed and disk capacity, video-on-demand (VOD) services have become possible [10,12]. A VOD system is typically implemented by a client-server architecture, and may easily run out of bandwidth because the growth in bandwidth can never keep up with the growth in the number of clients.…”

Section: Introductionmentioning

confidence: 99%