Using this method, the counter (counters) simple by adding a field to a field in another table, page number (s) to store the time that page is referenced and satellite clock (logical clock) or the counter (counter), this timepiece adds value every time a memory reference. When a page is referenced, the system removes the number from time to time, write down in a bin of that page (page number in a table) in this way, we will have the time each page was the last reference. To an empty page, we simply select the page that contains the number of the least time to relay.
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