'Page replacement algorithm' diaporamas de présentation

Chapter 9: Virtual Memory

Chapter 9: Virtual Memory. Chapter 9: Virtual Memory. Background Demand Paging Copy-on-Write Page Replacement Allocation of Frames Thrashing Memory-Mapped Files Allocating Kernel Memory Other Considerations Operating-System Examples. Objectives.

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Chapter 8: Virtual Memory

Chapter 8: Virtual Memory. Chapter 8: Virtual Memory. Background Demand Paging Copy-on-Write Page Replacement Allocation of Frames Thrashing Memory-Mapped Files Allocating Kernel Memory Other Considerations Operating-System Examples. Objectives.

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Chapter 9: Virtual Memory

Chapter 9: Virtual Memory. Chapter 9: Virtual Memory. Background Demand Paging Copy-on-Write Page Replacement Allocation of Frames Thrashing Memory-Mapped Files Allocating Kernel Memory Other Considerations Operating-System Examples. Objectives.

928 views • 78 slides

Chapter 9: Virtual Memory

Chapter 9: Virtual Memory. Chapter 9: Virtual Memory. Background Demand Paging Copy-on-Write Page Replacement Allocation of Frames Thrashing Memory-Mapped Files Allocating Kernel Memory Other Considerations Operating-System Examples. Objectives.

923 views • 71 slides

Chapter 9: Virtual Memory

Chapter 9: Virtual Memory. Chapter 9: Virtual Memory. Background Demand Paging Copy-on-Write Page Replacement Allocation of Frames Thrashing Memory-Mapped Files Allocating Kernel Memory Other Considerations Operating-System Examples. Objectives.

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Chapter 10: Virtual Memory

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Chapter 9: Virtual Memory

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Virtual Memory

Virtual Memory. Outline. Background Demand Paging Process Creation Page Replacement Allocation of Frames Thrashing Operating System Examples. Background. Virtual memory enables the separation of user logical memory from physical memory. moreover

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Chapter 3: Virtual Memory

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Chapter 10: Virtual Memory

Chapter 10: Virtual Memory. Chapter 10: Virtual Memory. Background Demand Paging Page Replacement Allocation of Frames Thrashing. Objectives. To describe the benefits of a virtual memory system

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Virtual Memory

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Chapter 10: Virtual Memory

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Virtual memory

Virtual memory. separation of user logical memory from physical memory Only part of the program needs to be in memory for execution. Logical address space can therefore be much larger than physical address space. Allows address spaces to be shared by several processes.

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Operating Systems

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Memory Replacement Policies

Memory Replacement Policies. Lecture 32 Klara Nahrstedt. CS241 Administrative. Read Stallings Chapter 8.1 and 8.2 about VM LMP2 (Part II due on Monday, April 16) See also lecture notes, self-assessment quiz, discussion section LMP2 quiz on Monday, April 16

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Memory Management

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VM Page Replacement

VM Page Replacement. Hank Levy. All Paging Schemes Depend on Locality. Processes tend to reference pages in localized patterns Temporal locality locations referenced recently likely to be referenced again Spatial locality

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EEE 435 Principles of Operating Systems

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Problem 3.2 Paging Algorithms-Time & Space Requirements

Problem 3.2 Paging Algorithms-Time & Space Requirements. Problem:What are the space and time requirements of LIFO, LFU, and LED? LRU: (least-recently-used): when eviction is necessary, replace the page whose most recent request was earliest.

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