Memory Management Strategies I - Comprehensive Foundations
The chapter provides an in-depth exploration of memory management strategies utilized by operating systems, emphasizing address translation mechanisms, dynamic memory allocation techniques such as contiguous and non-contiguous memory allocation, including paging and segmentation. It highlights how these strategies optimize resource utilization, address fragmentation challenges, and improve the overall execution efficiency of processes in a computing environment.
Sections
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What we have learnt
- Memory management is critical for effective resource allocation and isolation between processes.
- Address binding methods include compile time, load time, and execution time, each with specific advantages and disadvantages.
- Fragmentation can be internal or external, affecting memory utilization and requiring various strategies for management, such as compaction and paging.
Key Concepts
- -- Address Binding
- The process of mapping logical addresses generated by the CPU to physical addresses in memory, which can occur at compile time, load time, or execution time.
- -- Fragmentation
- The inefficient use of memory resulting from the dynamic allocation and deallocation of processes, leading to wasted unused blocks (internal and external).
- -- Paging
- A non-contiguous memory management technique that divides both logical and physical memory into fixed-size blocks, allowing processes to utilize memory efficiently without external fragmentation.
- -- Segmentation
- A memory management scheme that divides a process's address space into variable-sized segments, allowing a closer match to the logical organization of programs.
- -- Swapping
- A technique enabling operating systems to move a process's entire memory image between main memory and disk to manage limited physical memory more effectively.
Additional Learning Materials
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