Unit V: Memory Management | BCA 4th Semester Operating System Notes Pdf

We know that main memory (RAM) is an important resource that must be carefully managed. Nowadays size of memory is heavily increased and programs are getting faster and bigger than memory.

As memory size increases, programs also expands to fill them. Memory management deals with how operating system manage them. Once a program is loaded into memory, it remains there until it finishes.

In this “Memory Management – Operating System” you will learn about the following topics:

1. Basic Memory Management
2. Memory Hierarchy
3. Logical Address VS Physical Address
4. Memory Management with Swapping
5. Memory Management with Bitmaps
6. Memory Management with Linked List
7. Memory Management without Swapping
8. Mono Programming Without Swapping or Paging
9. Multiprogramming with Fix Partition
10. Contiguous Memory Allocation
11. Memory Protection, Memory Allocation, Fragmentation
12. Non-Contiguous Memory Allocation
13. Memory Partitioning
14. Fixed Partitioning
15. Possibilities of Fixed Partitioning
16. Dynamic/Variable Partitioning
17. Memory Management Requirements
18. Relocation, Protection, Sharing, Logical Organization, Physical Organization
19. Coalescing and Compaction
20. Virtual Memory
21. Benefits of Having Virtual Memory
22. Paging
23. Advantages and Disadvantages of Paging
24. Page Table
25. Address Translation
26. Structure of Page Table
27. Hierarchical Paging, Hashed Page Tables, Inverted Page Tables, Shared Pages
28. Demand Paging
29. Advantages of Demand Paging
30. The disadvantage of Demand Paging
31. Page Fault
32. Page Replacement
33. Page Replacement Algorithm
34. First In First Out (FIFO) Algorithm, Optimal Page Replacement (OPR) Algorithm, Least Recently Used (LRU) Algorithm, Second Chance Page (SCP) Replacement Algorithm, Page Buffering Algorithm, Least Frequently Used (LFU) Algorithm, Most Frequently Used(MFU) Algorithm
35. Trashing
36. Segmentation
37. Segmentation with Paging
38. Difference between Paging and Segmentation

==== Point to Note ====

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BCA 4th Semester Operating System Notes Pdf:

• Unit I: Introduction To Operating System
• Unit II: Operating System Structure
• Unit III: Process Management
• Unit IV: Deadlock
• Unit VI: Input/Output Device Management
• Unit VII: File System Management
• Unit VIII: Security Management
• Unit IX: Distributed Operating System
• Unit X: Case Study Issues
• Unit XI: Future Issues