4. Assume we have a demand-paged memory. The page table is held in registers.
It takes 8 milliseconds to service a page fault if an empty page is available
or the replaced page is not modified, and 20 milliseconds if the replaced page
is modified. Memory access time is 100 nanoseconds. Assume that the page to be
replaced is modified 70 percent of the time. What is the maximum acceptable
page-fault rate for an effective access time of no more than 200 nanoseconds?
這題想請教一下該如何解?
我解出來的答案 讓我覺得有點離譜 想問問大家都是算多少?
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