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The Computer Journal 1979 22(4):346-351; doi:10.1093/comjnl/22.4.346
© 1979 by British Computer Society
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Free store distribution under random fit allocation: part 1

C. M. Reeves *

Department of Computer Science, University of Keele, Keele, UK

Hitherto, most of our understanding of dynamic storage allocation techniques has come from simulation studies, with Knuth's Fifty Percent Rule as the notable exception. This paper extends the analytic approach to derive equations relating the equilibrium distribution by length of free blocks to the corresponding distribution of reservations under a random-fit allocation strategy. In the special case of single word reservations, it is predicted that the existence of a stable solution requires at least 37% store utilisation, and an analytic expression for the free store profile is obtained.

Received August 1978.

* Department of Computer Science, University of Keele, Keele, staffs ST5 5BG


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