Os Memory Management Questions
The Most Frequently Used (MFU) page replacement algorithm is a memory management technique used by operating systems to determine which pages should be replaced when there is a page fault.
In this algorithm, each page in memory is assigned a counter that keeps track of the number of times it has been referenced. When a page fault occurs, the operating system selects the page with the highest counter value as the one to be replaced, assuming that it is the least frequently used page.
The MFU algorithm assumes that the pages that have been referenced most frequently are likely to be referenced again in the near future. By replacing the least frequently used page, the algorithm aims to maximize the utilization of memory by keeping the most frequently used pages in memory.
However, the MFU algorithm may not always be the most effective in practice. It can be sensitive to sudden changes in program behavior or patterns, as it may not accurately reflect the future usage of pages. Additionally, it may not be suitable for systems with limited hardware support for maintaining page reference counters.