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Sep 6, 2023 · Memory management is a method in the operating system to manage operations between main memory and disk during process execution. The main aim of memory management is to achieve efficient utilization of memory.
Outline. Non-contiguous allocation. Address translation. Paging model. Paging implementation. Page table structure. Non-contiguous allocation. How can we enable the physical address space of a process to be non-contiguous? Allows physical memory to be allocated whenever available.
Sep 4, 2024 · Paging is a memory management technique used in operating systems to manage memory and allocate memory to processes. In paging, memory is divided into fixed-size blocks called pages, and processes are allocated memory in terms of these pages.
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Segmentation. Example: The Intel Pentium. Operating System Concepts – 8th. Silberschatz, Galvin and Gagne ©2009. Objectives. To provide a detailed description of various ways of organizing memory hardware. To discuss various memory-management techniques, including paging and segmentation.
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Background. Multiple processes resides in memory. Protection of memory required to ensure correct operation. Protect OS. Protect user processes. Base and Limit Registers. • A pair of base and limit registers define the logical address space. Hardware Address Protection with Base and Limit Registers. OS loads the base & limit reg.
Contiguous Allocation. Main memory usually into two partitions: Resident operating system, usually held in low memory with interrupt vector. User processes then held in high memory. Relocation registers used to protect user processes from each other, and from changing operating-system code and data.
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Aug 12, 2024 · This tutorial covers memory management basics, memory allocation techniques, Swapping, Paging and Fragmentation, Static and dynamic linking, and more.
