'Inverted page table' diaporamas de présentation

Memory Management

Memory Management. Memory Management Issues. Data/instructions must be resident in order to be acted upon Each process needs separate memory space OS needs to efficiently determine range of legal addresses. Base and Limit Registers. Define the starting address and length of legal memory

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Chapter 9: Main Memory

Chapter 9: Main Memory. Chapter 9: Memory Management. Background Swapping Contiguous Memory Allocation Segmentation Paging Structure of the Page Table Example: The Intel 32 and 64-bit Architectures Example: ARM Architecture. Objectives.

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Paging Example

Paging Example. Free Frames. After allocation. Before allocation. Implementation of Page Table. Page table is kept in main memory. Page-table base register ( PTBR) points to the page table. Page-table length register (PRLR) indicates size of the page table.

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Virtual Memory

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Chap 8

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Virtual Memory

Virtual Memory. Introduction to Operating Systems: Module 9. Virtual Memory. Background Demand Paging Performance of Demand Paging Page Replacement Page-Replacement Algorithms Allocation of Frames Thrashing Other Considerations Demand Segmentation. Background.

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Address Translation

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8.4.2 Implementation of Page Table

8.4.2 Implementation of Page Table. Page table is kept in main memory Page-table base register (PTBR) points to the page table Page-table length register (PRLR) indicates size of the page table

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Paging Hardware With TLB

Paging Hardware With TLB. We are attempting to speedup address lookups. Effective Access Time. Associative Lookup = ? time unit Assume memory cycle time is 1 microsecond

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8.4.2 Implementation of Page Table

8.4.2 Implementation of Page Table. Page table is kept in main memory Page-table base register (PTBR) points to the page table Page-table length register (PRLR) indicates size of the page table

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Memory Paging and Replacement

Memory Paging and Replacement. Lecture 31 Klara Nahrstedt. CS241 Administrative. Read Stallings Chapter 8.1 and 8.2 about VM LMP2 (Part II due on Monday, April 16)

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R. Rashid, A. Tevanian, M. Young, D. Golub, R. Baron, D. Black, W. Bolosky and J. Chew

MACHINE-INDEPENDENT VIRTUAL MEMORY MANAGEMENT FOR PAGED UNIPROCESSOR AND MULTIPROCESSOR ARCHITECTURES. R. Rashid, A. Tevanian, M. Young, D. Golub, R. Baron, D. Black, W. Bolosky and J. Chew Carnegie-Mellon University IEEE Trans. on Computers ,1988. THE PAPER.

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Memory Management

Memory Management. Compile time. runtime. Cache. loader. ld. How to create a process?. On Unix systems, executable read by loader Compiler: generates one object file per source file Linker: combines all object files into one executable Loader: loads executable in memory.

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Memory Management

Memory Management. CS 470 - Spring 2002. Overview. Partitioning, Segmentation, and Paging External versus Internal Fragmentation Logical to Physical Address Mapping Placement Algorithms First Fit, Next Fit, and Best Fit Buddy System Intel X86 Memory Mapping Mechanisms

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Lecture 35: Review for Midterm 2

Lecture 35: Review for Midterm 2. About Midterm 2. Cover scheduling, memory management, and file systems. A double-side A4 or US letter sheet of note is allowed 50 minutes. Overview. Process Scheduling Memory Management File System. Process scheduling.

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Virtual Memory

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Virtual Memory

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Pertemuan 12 Manajemen Memory (Lanjutan)

Pertemuan 12 Manajemen Memory (Lanjutan). Matakuliah : T0316/sistem Operasi Tahun : 2005 Versi/Revisi : 5. OFFCLASS02. Learning Outcomes. Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : menjelaskan pengelolaan memory tingkat lanjut, misalnya swapping, virtual memory (C2).

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CMPT 300 Introduction to Operating Systems

CMPT 300 Introduction to Operating Systems. Virtual Memory Sample Questions. 0. Page Table.

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Pertemuan 12 Manajemen Memory (Lanjutan)

Pertemuan 12 Manajemen Memory (Lanjutan). Matakuliah : T0316/sistem Operasi Tahun : 2005 Versi/Revisi : 5. OFFCLASS02. Learning Outcomes. Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : menjelaskan pengelolaan memory tingkat lanjut, misalnya swapping, virtual memory (C2).

298 views • 15 slides