An overview of the current and future positions with respect to operating system performance is given. While a great deal of information and a large number of models for subsystems have been developed, gaps still exist in our knowledge. Because of the severe interactions between the various subsystems of an operating system, an overall model of the total system must be developed to be able to analyze and design the performance aspects of an operating system Although such total system designs are exceptional today, it is projected that they will become increasingly more common and necessary in the near future. Such a design philosophy will clearly have a severe impact on the way we go about modularizing operating and computer systems.
W. C. Lynch
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Computer Systems: Reliable full-duplex file transmission over half-duplex telephone line
A field-proven scheme for achieving reliable duplex transmission over a half-duplex communication line is presented, and to demonstrate the difficulty of the problem, another similar scheme, which is only slightly unreliable, is also presented. A flowchart for the reliable scheme and some interesting examples are given.
Description of a high capacity, fast turnaround university computing center
The operating system for the UNIVAC 1107 at Case Institute is reviewed. The system is of interest because of the low turn-around times achieved, the high throughput achieved and the lack of an operating staff. Turnaround times below 5 minutes and job volume above 75,000 per quarter year are reported.
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