From Wikipedia, the free encyclopedia

What is LFU and LRU?

LRU stands for the Least Recently Used page replacement algorithm. LFU stands for the Least Frequently Used page replacement algorithm. It removes the page that has not been utilized in the memory for the longest period of time. It replaces the least frequently used pages.

What is meant by LFU and MFU?

Textbook: Sections 4.3 and 4.4 Paging basic idea page table format Implementation issues large tables: table directories large tables: inverted page tables speed: the TLB Replacement algorithms FIFO (First in, first out) LRU (Least recently used) NRU (Not recently used) Clock LFU (Least frequently used) MFU (Most …