分布式视频点播多媒体系统的有效负载均衡

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI:10.1109/INMIC.2003.1416687

M. Moghal, M. Mian

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引用次数: 5

摘要

分布式多媒体应用(DMA)，如视频点播(VoD)，需要终端用户机器为其连续的多媒体流提供动态服务质量(QoS)保证。QoS要求和作业执行时间的改进可以通过在机器之间进行适当的负载平衡来实现。实现负载平衡的一种有效方法是将这些终端用户计算机与多个潜在的异构空闲或负载不足的集群服务器连接起来，并允许这些具有空闲检索带宽的服务器帮助低功耗或暂时过载(瓶颈)的终端用户计算机。与单个视频服务器相比，集群VoD服务器方法提供了可伸缩性和可用性。本文设计并实现了一种新的多媒体视频点播集群-服务器-客户端架构以及一种新的REMS+视频点播算法。通过改变视频请求(会话)的数量和潜在服务器的数量，对该算法进行了严格的模拟。仿真结果表明:(1)有效的负载均衡;(2)可扩展性;(3)视频点播系统的可用性

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Effective load balancing in distributed video-on-demand multimedia system

Distributed multimedia applications (DMA), such as video-on-demand (VoD) require dynamic quality-of-service (QoS) guarantee from end-user machines for their continuous multimedia streams. The QoS requirements and improvement in job execution time can be achieved with the aid of proper load balancing among the machines. An effective way to achieve load balance is to link up these end-user machines with multiple potential heterogeneous idle or under-loaded clustered-servers and allow these servers with idle retrieval bandwidth to help out end-user machines that are low power or temporarily overloaded (bottleneck). The clustered VoD servers approach provides scalability and availability compared to a single video server. In this paper we design and implement a new clustered-server-client architecture for multimedia VoD applications along with a new REMS+VoD algorithm. Rigorous simulation for the algorithm has been performed by varying both the number of video-requests (sessions) and the number of potential servers. The simulation results show that our approach provides: (1) effective load balancing; (2) scalability; and (3) availability in a VoD system

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7th International Multi Topic Conference, 2003. INMIC 2003.

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