Question
Assume a main memory with four page frames (frame A through frame D). Assume that the sequence of pages requested by a process is as
Assume a main memory with four page frames (frame A through frame D). Assume that the sequence of pages requested by a process is as shown below.
8, 5, 2, 9, 8, 9, 6, 1, 8, 5, 9
For each reference in the above sequence, identify whether it will cause a page fault (F) or will result in a page hit (H), when using the second chance page replacement algorithm. Use the table provided for your solutions use the Status column to indicate F or H and the Page Frame column to indicate the page frame into which the page has been loaded. Assume that all page frames are initially empty.
Note: the first few entries are already filled out for your reference.
Page | Status | Page Frame |
8 | F | A |
5 | F | B |
2 | F | C |
9 | F | D |
8 | [ Select ] ["F", "H"] | [ Select ] ["A", "B", "C", "D"] |
9 | [ Select ] ["F", "H"] | [ Select ] ["A", "B", "C", "D"] |
6 | [ Select ] ["F", "H"] | [ Select ] ["A", "B", "C", "D"] |
1 | [ Select ] ["F", "H"] | [ Select ] ["A", "B", "C", "D"] |
8 | [ Select ] ["F", "H"] | [ Select ] ["A", "B", "C", "D"] |
5 | [ Select ] ["F", "H"] | [ Select ] ["A", "B", "C", "D"] |
9 | [ Select ] ["F", "H"] | [ Select ] ["A", "B", "C", "D"] |
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