Accession Number : AD0675335

Title :   A STUDY OF A FEEDBACK TIME-SHARING SYSTEM,

Corporate Author : ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Personal Author(s) : Beach,Edward J.

Report Date : SEP 1968

Pagination or Media Count : 62

Abstract : The time-sharing system to be modeled consists of a large number of teletype consoles which communicate with the processing system through the necessary data channels and the input-output control section. There are two types of memory: a high speed core memory and a slower access memory such as drum memory. The drum memory is used for the storage of system programs. Each user is also assigned a portion of drum storage solely for his own use. A user may activate some of his file in drum storage from his console to be transferred into core memory for processing. The model of the time-sharing system discussed in this paper consists of a serving unit, an infinite queue, and two buffers, the input buffer and the auxiliary buffer. The input buffer, the auxiliary buffer, and the queue represent memory segments. The input buffer receives jobs from the teletype consoles. The server consists of the central processing unit and high speed core memory. Service in the server is quantized into segments of time of constant length Q. (Author)

Descriptors :   (*DIGITAL COMPUTERS, TIME SHARING), (*TIME SHARING, QUEUEING THEORY), FEEDBACK, MATHEMATICAL MODELS, TELETYPE SYSTEMS, INPUT OUTPUT DEVICES, MEMORY DEVICES, PROBABILITY, MATRICES(MATHEMATICS)

Subject Categories : Computer Hardware
      Computer Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE