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Memory Management Chapter 4 4.1 Basic memory management 4.2 Swapping 4.3 Virtual memory 4.4 Page replacement algorithms 4.5 Modeling page replacement algorithms 4.6 Design issues for paging systems 4.7 Implementation issues 4.8 Segmentation
Memory Management ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Basic Memory Management Monoprogramming without Swapping or Paging ,[object Object],[object Object]
Multiprogramming with Fixed Partitions ,[object Object],[object Object],[object Object]
Modeling Multiprogramming ,[object Object],Degree of multiprogramming
Analysis of Multiprogramming System Performance ,[object Object],[object Object],[object Object],[object Object]
Relocation and Protection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Swapping (1) ,[object Object],[object Object],[object Object],[object Object]
Swapping (2) ,[object Object],[object Object]
Memory Management with Bit Maps ,[object Object],[object Object],[object Object],[object Object],[object Object]
Memory Management with Linked Lists ,[object Object]
Virtual Memory Paging (1) ,[object Object]
Paging (2) ,[object Object]
Page Tables (1) ,[object Object]
Page Tables (2) ,[object Object],[object Object],Second-level page tables Top-level page table
Page Tables (3) ,[object Object]
TLBs – Translation Lookaside Buffers ,[object Object]
Inverted Page Tables ,[object Object]
Page Replacement Algorithms ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Optimal Page Replacement Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object]
Not Recently Used Page Replacement Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
FIFO Page Replacement Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object]
Second Chance Page Replacement Algorithm ,[object Object],[object Object],[object Object]
The Clock Page Replacement Algorithm
Least Recently Used (LRU) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Simulating LRU in Software (1) ,[object Object]
Simulating LRU in Software (2) ,[object Object],[object Object]
The Working Set Page Replacement Algorithm (1) ,[object Object],[object Object]
The Working Set Page Replacement Algorithm (2) ,[object Object]
The WSClock Page Replacement Algorithm ,[object Object]
Review of Page Replacement Algorithms
Modeling Page Replacement Algorithms Belady's Anomaly ,[object Object],[object Object],[object Object]
Stack Algorithms ,[object Object],7 4 6 5
The Distance String ,[object Object]
The Distance String ,[object Object],[object Object],[object Object]
Design Issues for Paging Systems Local versus Global Allocation Policies (1) ,[object Object],[object Object],[object Object]
Local versus Global Allocation Policies (2) ,[object Object]
Load Control ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Page Size (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Page Size (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],page table space internal fragmentation Optimized when
Separate Instruction and Data Spaces ,[object Object],[object Object]
Shared Pages ,[object Object]
Cleaning Policy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Implementation Issues Operating System Involvement with Paging ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Page Fault Handling (1) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Page Fault Handling (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Instruction Backup ,[object Object]
Locking Pages in Memory ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Backing Store ,[object Object],[object Object]
Separation of Policy and Mechanism ,[object Object]
Segmentation (1) ,[object Object],[object Object]
Segmentation (2) ,[object Object]
Segmentation (3) ,[object Object]
Implementation of Pure Segmentation ,[object Object],[object Object]
Segmentation with Paging: MULTICS (1) ,[object Object],[object Object]
Segmentation with Paging: MULTICS (2) ,[object Object]
Segmentation with Paging: MULTICS (3) ,[object Object]
Segmentation with Paging: MULTICS (4) ,[object Object],[object Object]
Segmentation with Paging: Pentium (1) ,[object Object]
Segmentation with Paging: Pentium (2) ,[object Object],[object Object]
Segmentation with Paging: Pentium (3) ,[object Object]
Segmentation with Paging: Pentium (4) ,[object Object]
Segmentation with Paging: Pentium (5) ,[object Object],Level

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Chapter 04

  • 1. Memory Management Chapter 4 4.1 Basic memory management 4.2 Swapping 4.3 Virtual memory 4.4 Page replacement algorithms 4.5 Modeling page replacement algorithms 4.6 Design issues for paging systems 4.7 Implementation issues 4.8 Segmentation
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  • 24. The Clock Page Replacement Algorithm
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  • 31. Review of Page Replacement Algorithms
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