'Page frames' diaporamas de présentation

Memory management, part 2: outline

Memory management, part 2: outline. Page Replacement Algorithms. Page fault forces choice which page must be removed to make room for incoming page? Modified page must first be saved unmodified just overwritten Better not to choose an often used page

616 views • 61 slides

Memory management, part 2: outline

Memory management, part 2: outline. Page replacement algorithms Modeling PR algorithms Working-set model and algorithms Virtual memory implementation issues. Page Replacement Algorithms. Page fault forces choice which page must be removed to make room for incoming page?

618 views • 61 slides

William Stallings Computer Organization and Architecture 7 th Edition

677 views • 51 slides

Virtual Memory

Virtual Memory. Lawrence Angrave and Vikram Adve. Contents. Memory mapped files Page sharing Page protection Virtual Memory and Multiprogramming Page eviction policies Page frame allocation and thrashing Working set model and implementation. Memory Mapped Files. VM of User. File.

486 views • 37 slides

8. Virtual Memory

8. Virtual Memory. 8.1 Principles of Virtual Memory 8.2 Implementations of Virtual Memory Paging Segmentation Paging With Segmentation Paging of System Tables Translation Look-aside Buffers 8.3 Memory Allocation in Paged Systems Global Page Replacement Algorithms

503 views • 36 slides

Memory Implementation Issues

Memory Implementation Issues. Lecture 33 Klara Nahrstedt. CS241 Administrative. Read Stallings Chapter 8.1 and 8.2 about VM LMP3 starts today Start Early!!!. Contents. Brief Discussion of Second Chance Replacement Algorithm Paging basic process implementation

411 views • 34 slides

Memory Implementation Issues

Memory Implementation Issues. Lecture 33 Klara Nahrstedt. CS241 Administrative. Read Stallings Chapter 8.1 and 8.2 about VM LMP3 starts today Start Early!!!. Contents. Brief Discussion of Second Chance Replacement Algorithm Paging basic process implementation

389 views • 34 slides

Memory Implementation Issues

Memory Implementation Issues. Lawrence Angrave. Contents. Paging basic process implementation Frame allocation for multiple processes Thrashing Working Set Memory-Mapped Files. Basic Paging Process Implementation(1). Separate page out from page in Keep a pool of free frames

415 views • 32 slides

Operating Systems, 112

369 views • 31 slides

Memory Replacement Policies

Memory Replacement Policies. Stallings 8.1,8.2 (Ch22) Lawrence Angrave. Demand Paging Example. VM. fault. ref. Load M. Page table. Free frame. Concepts this Lecture. Terminology Demand Paging Replacement Issues Replacement Strategies. #1 Terminology.

487 views • 27 slides

Memory Management

545 views • 26 slides

Demand Paging

Demand Paging. Virtual memory = indirect addressing + demand paging Without demand paging, indirect addressing by itself is valuable because it reduces external fragmentation Demand paging attributes: Process may run with less than all pages in memory

1.45k views • 22 slides

EEE 435 Principles of Operating Systems

EEE 435 Principles of Operating Systems. Page Replacement Algorithms Pt I (Modern Operating Systems 4.4). Quick Review. What is the problem that multi-level page tables solve? In a TLB, what kind of memory is required to look up the page frame of a physical address quickly?

323 views • 20 slides

The Linux Kernel: Memory Management

The Linux Kernel: Memory Management. Page Frame Management. Page frames are 4KB in Linux. The kernel must keep track of the current status of each frame. Are page frames allocated or free? If allocated, do they contain process or kernel pages?

496 views • 18 slides

IA32 Paging Scheme

174 views • 17 slides

EEE 435 Principles of Operating Systems

233 views • 15 slides

TUTORIAL 1

TUTORIAL 1. FIFO vs LRU. First-in first-out (FIFO) policy: a page replacement policy that removes from main memory the pages that were brought in first. *KEY = Identify what are FIRST PAGE REQUEST for in and out?.

381 views • 10 slides