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Home/Magazine Archive/August 1968 (Vol. 11, No. 8)/Operating Systems: On overcoming high-priority paralysis.../Abstract

Operating Systems: On overcoming high-priority paralysis in multiprogramming systems: a case history

By David F. Stevens
Communications of the ACM, August 1968, Vol. 11 No. 8, Pages 539-541
10.1145/363567.363571
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High-priority paralysis is the degradation that can occur in multiprogramming systems when scheduling is based primarily on preassigned priorities. It can be alleviated by modifying the scheduling algorithm to maximize the number of programs active at one time. The case history given in this paper indicates two general methods by which simultaneity can be increased. Possible refinements in the scheduling algorithm for future improvements are considered briefly.

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