'Effective access time' diaporamas de présentation

Memory Management

Memory Management. CS 550 Spring 2014 Kenneth Chiu. Background. Program must be brought (from disk) into memory and placed within a process for it to be run Main memory and registers are only storage CPU can access directly Register access in one CPU clock (or less)

1.71k views • 161 slides

Operating Systems

Operating Systems. Certificate Program in Software Development CSE-TC and CSIM, AIT September -- November, 2003. Objectives describe virtual memory , a technique that allows the execution of processes that may not be completely in memory (RAM). 9. Virtual Memory (Ch.9, S&G).

955 views • 80 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.

952 views • 78 slides

Chapter 8: Memory-Management Strategies

Chapter 8: Memory-Management Strategies. Chapter 8: Memory Management Strategies. Background Swapping Contiguous Memory Allocation Paging Structure of the Page Table Segmentation Example: The Intel Pentium. Objectives.

976 views • 61 slides

School of Computing Science Simon Fraser University CMPT 300: Operating Systems I Ch 9: Virtual Memory Dr. Mohamed Hefee

School of Computing Science Simon Fraser University CMPT 300: Operating Systems I Ch 9: Virtual Memory Dr. Mohamed Hefeeda. Objectives. Understand virtual memory system, its benefits, and mechanisms that make it feasible: Demand paging Page-replacement algorithms Frame allocation

682 views • 52 slides

CMPT 300 Introduction to Operating Systems

CMPT 300 Introduction to Operating Systems. Page Replacement Algorithms. Tertiary Storage (Tape). Processor. Caching. Control. Second Level Cache (SRAM). Main Memory (DRAM). Secondary Storage (Disk). On-Chip Cache. Datapath. Demand Paging.

619 views • 51 slides

Chapter 9: Memory Management

Chapter 9: Memory Management. Background Swapping Contiguous Allocation Paging Segmentation Segmentation with Paging. Background. Process is running program ? Process must be in memory Input queue: collection of processes on the disk waiting to be brought into memory to run

714 views • 42 slides

Segmentation

Segmentation. Memory-management scheme that supports user view of memory. A program is a collection of segments. A segment is a logical unit such as: main program, procedure, function, method, object, local variables, global variables, common block, stack,

639 views • 35 slides

Operating Systems CMPSCI 377 Lecture 13: Demand Paging

Operating Systems CMPSCI 377 Lecture 13: Demand Paging. Emery Berger University of Massachusetts, Amherst. Last Time: Paging. Motivation Fragmentation Page Tables Hardware Support Other Benefits. Today: Demand-Paged VM. Reading pages Writing pages Swap space Page eviction

819 views • 34 slides

Virtual Memory

458 views • 31 slides

439 views • 31 slides

Last Time: Paging

Last Time: Paging. Motivation Page Tables Hardware Support Benefits. Demand-Paged VM. Reading pages Writing pages Swap space Page eviction Cost of paging Page replacement algorithms Evaluation. Demand-Paging Diagram. Key Policy Decisions. Two key questions:

472 views • 29 slides

Module 9: Virtual Memory

746 views • 28 slides

Lecture 16 Chapter 8: Main Memory

Lecture 16 Chapter 8: Main Memory. Chapter 8: Memory Management. Background Swapping Contiguous Memory Allocation Paging Structure of the Page Table Segmentation Example: The Intel Pentium. Background.

430 views • 27 slides

Virtual Memory - Part II

Virtual Memory - Part II. CS 537 - Introduction to Operating Systems. Page Table Size. Where does page table live? virtual memory? or physical memory? How big is page table? 32 bit addressing, 4K page, 4 byte table entry 4 MB with 64 bit addressing, this number is huge. Page Table Size.

547 views • 26 slides

Computational Astrophysics: Methodology

Computational Astrophysics: Methodology. Identify astrophysical problem Write down corresponding equations Identify numerical algorithm Find a computer Implement algorithm, generate results Visualize data. Computer Architecture.

409 views • 24 slides

ITEC 352

363 views • 23 slides

Demand Paging

423 views • 10 slides

Computer Memory: Some Extra Topics

Computer Memory: Some Extra Topics. Edward Bosworth TSYS School of Computer Science Columbus State University Lecture for CPSC 5155. Merging Write Buffer. Precise Definition of Virtual Memory.

254 views • 7 slides

Scribe(27-03-2014) Rhitottam De 11CS30011

Scribe(27-03-2014) Rhitottam De 11CS30011. Implementation of Page Table. For each process the page table may be stored as follows :-

161 views • 7 slides