9.12 Silberschatz, Galvin and Gagne ©2009 Operating System Concepts – 8 th Edition Performance of Demand Paging Page Fault Rate 0 p 1.0 if p = 0, no page faults if p = 1, every reference is a fault Effective Access Time (EAT) EAT = (1 – p) x memory access + p (page fault overhead + swap page out + swap page in + restart overhead )
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