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The characteristics of digital video files and traffic differ substantially from those encountered with data applications: (i) video files are much larger than data files, and (ii) video traffic is continuous in nature while data traffic is bursty, with the data rate of a video stream much higher than the mean rate of a data traffic source. Accordingly,(More)
In a disk based storage system a bu er cache is used to reduce the number of disk I O The bu er manager is responsible for bu er replacement to free memory in order to accommodate new data blocks from disk An optimal bu er replacement algorithm is one which yields the lowest number of cache misses and as a re sult the lowest number of disk I O In general(More)
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