Given a demand-paged virtual memory system with the following parameters:
Page Fault Probability (p)
Memory Access Time
Average time to read a page from disk
(i) Calculate the effective access time.
(ii) What is the slowdown due to the use of demand paging (as a factor of
memory access time)?
0.000001
5nS
10 mS
(iii) What would the page-fault probability have to be to have an overhead
of less than 50% (i.e. so that the average access time would be not
more than 150% of the memory access time)?