``Fast proxy delivery of multiple streamng sessions in shared running bufferss" Songqing Chen, Bo Shen, Yong Yan, Sujoy Basu, and Xiaodong Zhang IEEE Transactions on Multimedia, Vol 7, No. 6, December 2005, pp. 1157-1169. Abstract With falling price of memory, an increasing number of multimedia servers are now equipped with a large memory space. Caching media objects in the memory of a proxy helps to reduce the network traffic, the disk I/O bandwidth requirement, and the data delivery latency. The running buffer approach and its alternatives are representative techniques to caching streaming data in the memory. Threre are two limits in the existing techniques. First Although multiple running buffers for the same media object co-exist in a given processing period, data sharing among multiple buffers is not considered. Second, user access patterns are not insightfully considered in the buffer management. In this paper, we propose two techniques based on shared running buffers in the proxy to address these limits. Considering user access patterns and characteristics of the requested medua objects, our techniques adaptively allocate memory buffers to fully utilize the currently buffered data of streaming sessions, with the aim to reduce both the server load and the network traffic. Experimentally comparing with several existing techniques, we show that the proposed techniques achieve significant performance improvement by effectively using the shared running buffers.Back to the Publication Page.
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