TAILIEUCHUNG - Lecture Operating system principles - Chapter 7: Memory management

After studying this chapter, you should be able to: Discuss the principal requirements for memory management, understand the reason for memory partitioning and explain the various techniques that are used, understand and explain the concept of paging,. | Chapter 7 Memory Management Basic requirements of Memory Management Memory Partitioning Paging Segmentation Memory Management The principal operation of memory management is to bring processes into main memory for execution by the processor. A program must be loaded into main memory to be executed. Memory Management Memory needs to be allocated to ensure a reasonable supply of ready processes to consume available processor time Otherwise, for much of the time all of the processes will be waiting for I/O and the processor will be idle. The need for memory management Memory is cheap today, and getting cheaper But applications are demanding more and more memory, there is never enough! Memory Management involves swapping blocks of data from secondary storage. Memory I/O is slow compared to CPU The OS must cleverly time the swapping to maximise the CPU’s efficiency Memory Management Requirements Relocation Protection Sharing Logical organisation Physical organisation .

• Hệ điều hành
• Operating system
• Lecture Operating system principles
• Hệ điều hành
• Computer system
• Memory management
• Memory management requirements
• Operating system concepts
• Lecture Operating system concepts
• Operating system services
• Operating system structures
• Operating system design
• Operating system structure
• Computer system organization
• Operating System Debugging
• Operating System Generation
• Types of System Calls
• Modern operating systems
• Evolution of operating systems
• Computer system structures
• File system interface
• File system implementation
• Computer system architecture
• The Linux system