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Communications of the ACM

Communications of the ACM

The distribution of a program in primary and fast buffer storage

A virtual memory computer system with a fast buffer (cache) memory between primary memory and the central processing unit is considered. The optimal distribution of a program between the buffer and primary memory is studied using the program's lifetime function. Expressions for the distribution of a program which maximizes the useful fraction of the cost-time integral of primary and fast buffer storage are obtained for swapping and nonswapping buffer management policies.

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