Memory Management in Operating System (OS)

August 21, 2019

Memory Management in Operating System

Memory management is the process of intelligently handling all the memory related operations and resources in the primary memory or storage disk when there are multiple processes that are using memory and resources. It keeps track of all the memory, it may be idle in the system or can be allocated to different processes at a given time.

  • It decides which processes will get memory resources and when
  • It keeps track of all memory status, when allocated or when idle
Memory Management in OS Operating System

Various Methods Involved

There are various methods through which the memory management system in OS intelligently manage the system –

We will discuss all these in detail in the upcoming posts of the series.

Entities involved –

Operating systems Memory

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  1. Memory Management Introduction
  2. Partition Allocation Method
    1. First Fit in OS
      1. Program in C | C++ | Java | Python
    2. Best fit
      1. Program in C | C++ | Java | Python
    3. Worst fit
      1. Program in C | C++ | Java | Python
    4. Next fit
      1. Program in C | C++ | Java | Python
    5. First fit best fit worst fit in OS Example
  3. Buddy- System Allocator
  4. Paging
    1. Types of Paging
  5. Fragmentation
    1. internal fragmentation
    2. external fragmentation
    3. internal fragmentation vs external fragmentation
  6. Mapping Virtual address to Physical Address.
  7. Virtual Memory 
  8. Demand Paging
  9. Implementation of Demand paging and page fault
  10. Segmentation
  11. Page Replacement Algorithms
    1. LRU
    2. FIFO
    3. Optimal Page Replacement algorithm
  12. Thrashing
  13. Belady’s Anomaly
  14. Static vs Dynamic Loading
  15. Static vs Dynamic Linking
  16. Swapping
  17. Translational Look Aside Buffer
  18. Process Address Space
  19. Difference between Segmentation and Paging
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