Introduction to Operating Systems | IIT Madras - #6 Memory Management Introduction | Introduction to Operating Systems

Welcome to 'Introduction to Operating Systems' course ! This lecture focuses on memory management in operating systems, explaining how the limited RAM is allocated and managed among multiple processes. It emphasizes the importance of memory management for efficient system operation. The lecture begins by discussing the single contiguous memory model, where only one process resides in memory at a time, highlighting its drawbacks, such as sequential execution and limited process size. It then introduces the partition model, which allows multiple processes to share memory simultaneously, explaining the role of the partition table in tracking memory allocation. The lecture further explores the concepts of internal and external fragmentation, illustrating how memory can become fragmented and underutilized. It discusses different allocation algorithms like first-fit, best-fit, and worst-fit, explaining their trade-offs in terms of fragmentation and allocation speed. Finally, the lecture touches upon the challenges of memory deallocation and the need for memory compaction to reduce fragmentation. NPTEL Courses permit certifications that can be used for Course Credits in Indian Universities as per the UGC and AICTE notifications. To understand various certification options for this course, please visit https://nptel.ac.in/courses/106106144 #MemoryManagement #PartitionModel #Fragmentation #AllocationAlgorithms #MemoryCompaction