Memory management

Memory Management

Memory management is an OS function that handles the allocation and deallocation of memory resources for processes, ensuring efficient and secure use of the system's memory.

1. Frames: Fixed-sized blocks of physical memory. The OS divides memory into frames for easier management.

2. Page: Fixed-sized blocks of logical memory in a program. Pages are mapped to frames in physical memory.

3.segment: Variable-sized blocks of memory representing logical units like functions or data structures. Segments allow more flexible memory allocation.

Memory Management Requirements

- Relocation: Allows processes to be moved in memory, enabling efficient use of available space.

- Protection: Ensures that processes do not interfere with each other’s memory, maintaining system stability and security.

- Sharing: Enables multiple processes to share memory, such as libraries, while maintaining protection.

- Logical Organization: Organizes memory into segments or pages, reflecting the logical structure of programs.

- Physical Organization: Manages the mapping of logical memory to physical memory, optimizing performance and resource use.