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. CACM July 1973 Gelenbe, E. cache, virtual memory, lifetime function, cost-time integral, fast buffer 4.3 6.2 6.3 CA730705 JB January 23, 1978 12:41 PM 2374 4 2481 2481 4 2481 2669 4 2481 2863 4 2481 3016 4 2481 3052 4 2481 1901 5 2481 2481 5 2481 2481 5 2481 2481 5 2481