Suppose that the WSClock page replacement algorithm uses a of two ticks, and the system state

Suppose that the WSClock page replacement algorithm uses a Ï„ of two ticks, and the system state is the following:

where the three flag bits V, R, and M stand for Valid, Referenced, and Modified, respectively.
(a) If a clock interrupt occurs at tick 10, show the contents of the new table entries. Explain.
(You can omit entries that are unchanged.)
(b) Suppose that instead of a clock interrupt, a page fault occurs at tick 10 due to a read request to page 4. Show the contents of the new table entries. Explain. (You can omit entries that are unchanged.)

Transcribed Image Text:

Page Time stamp VR M 0 1 0 0 6 9 9 7 4