A Statistical Model for Console Behavior in Multiuser Computers The ability of a computer system to communicate with the outside world efficiently is as important as its ability to perform computations efficiently. It is quite difficult to characterize a particular user, but rather easy to characterize the entire user community. Based on the properties of this community we have postulated a hypothetical "virtual console." No claim is made that a virtual console behaves like any actual console, but the entire collection of virtual consoles models the collection of actual consoles. Using the model we answer questions like: How many processes are suspended waiting for console input? What is the maximum rate at which a process can execute? What bounds can be set on overall buffer requirements? Answers to these and similar questions are needed in certain aspects of operating system design. CACM September, 1968 Denning, P. J. statistical models for input-output, operating system design, input-output design 4.30 4.41 5.5 CA680903 JB February 22, 1978 9:21 AM 1458 4 1698 1523 4 1698 1603 4 1698 1698 4 1698 1747 4 1698 1748 4 1698 1854 4 1698 1877 4 1698 1960 4 1698 2377 4 1698 2378 4 1698 2497 4 1698 2558 4 1698 2625 4 1698 2632 4 1698 2840 4 1698 2941 4 1698 3105 4 1698 3144 4 1698 1471 5 1698 1698 5 1698 1698 5 1698 1698 5 1698