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A page table is a data structure inside the operating system that maps logical addresses and physical addresses. It stores other information about each page , such as whether it is in memory or on disk, whether it is read-only or read-write, and so on. The page replacement algorithm used by the operating system determines which pages are selected for replacement. Page Cleanup: When a process terminates, the operating system frees the memory allocated to the process and cleans up the corresponding entries in the page tables. How Demand Paging in OS Affects System Performance? Paging in operating systems ( OS ) efficiently manages memory by dividing it into fixed-size blocks, simplifying memory allocation and access. Complete guide to paging in operating systems covering page tables, memory allocation, translation mechanisms, and practical examples with diagrams.
