STEPS TOWARD A GENERAL PURPOSE TIME-SHARING SYSTEM USING LARGE CAPACITY CORE STORAGE AND TSS/360,
Abstract
This paper is a progress report of an effort at Carnegie-Mellon University to determine how a large capacity core storage facility (LCS) can be used to reduce the demand paging overhead costs in the IBM System/360 Time Sharing System (TSS/360) and in similar general purpose time-sharing systems. A discussion is presented of how the number of paging operations and the cost of each paging operation can be reduced by using LCS as both a swapping device and an extension of executable core. Two problems which arise are considered. A new algorithm for releasing core is presented and compared with two existing algorithms. Finally, results from a feasibility implementation of the ideas in a pre-release version of TSS/360 are presented as a demonstration of the validity of using LCS to reduce paging overhead. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1968
- Accession Number
- AD0668078
Entities
People
- Albin L. Vareha Jr
- Hugh C. Lauer
- Richard E. Fikes
Organizations
- Carnegie Mellon University