Encyclopedia

Tag: Memory Management

  • LRU (Least Recently Used)

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    Explanation:LRU (Least Recently Used) is a page replacement algorithm used in operating systems to manage memory efficiently. When the system needs to replace a page in memory, LRU selects the page that has not been accessed for the longest period. LRU approximates the optimal page replacement strategy by tracking page usage over time. This algorithm…

  • Paging

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    Paging is a memory management technique in operating systems where memory is divided into fixed-sized blocks called pages. Correspondingly, physical memory is divided into frames of the same size. Paging is a memory management scheme that eliminates the need for contiguous memory allocation, dividing physical memory into fixed-sized blocks called frames and logical memory into…

  • Memory Management

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    Memory management is a core function of the operating system responsible for the allocation, deallocation, and optimization of primary memory (RAM). It ensures that processes have sufficient memory to execute while maximizing system efficiency and stability. Memory Management refers to the process by which an operating system manages computer memory, allocating it to processes and…

  • Virtual Memory

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    Virtual memory is a memory management technique that allows the execution of processes that may not be completely in the main memory (RAM). It creates an illusion for users that there is almost unlimited memory by using both hardware and software to map logical addresses to physical addresses. The operating system divides virtual memory into…

  • Kernel

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    The kernel is the core component of an operating system that acts as a bridge between hardware and software. It manages system resources, including the CPU, memory, I/O devices, and file systems, ensuring that applications have controlled and secure access to these resources. As the primary part of the OS, the kernel operates in a…