PPT-Chapter 9, Virtual Memory

Overheads Part 2 Sections 96910 1 96 Thrashing As noted earlier in order for virtual memory to be practical extremely low fault rates are necessary If the number of frames allocated to a process falls below a certain level the process will tend to fault frequently. And 57375en 57375ere Were None meets the standard for Range of Reading and Level of Text Complexity for grade 8 Its structure pacing and universal appeal make it an appropriate reading choice for reluctant readers 57375e book also o57373ers students Avg Access Time 2 Tokens Number of Controllers Average Access Time clock cyles brPage 16br Number of Tokens vs Avg Access Time 9 Controllers Number of Tokens Average Access Time clock cycles brPage 17br brPage 18br 15-213 : Introduction to Computer Systems. 2. 3rd. . March 2015. Today . Virtual Memory. Overview. Address translation. TLB. Memory . mapping. Memory Mapping. VM areas initialized by associating them with disk objects.. 2. Goals for Today. Virtual . memory. Mechanism. How does it work?. Policy. What . to replace. ?. How much to fetch?. 3. What is virtual memory?. Each process has illusion of large address space. 2. 32. Use main memory as a “cache” for secondary (disk) storage. Managed jointly by CPU hardware and the operating system (OS). Programs share main memory. Each gets a private virtual address space holding its frequently used code and data. Managed jointly by CPU hardware and the operating system (OS). Programs share main memory. Each gets a private virtual address space holding its frequently used code and data. Protected from other programs. Virtual Memory Use main memory as a “cache” for secondary (disk) storage Managed jointly by CPU hardware and the operating system (OS) Programs share main memory Each gets a private virtual address space holding its frequently used code and data Virtual World pros & cons Outline Virtual Reality Virtual World Second Life Pros & Cons How Second life Affects Real Life Are we ready to live in a Virtual World? Virtual Reality Virtual reality (VR) is a powerful technique that uses computer representations to transform people's sense of presence, so that they feel themselves to be in a virtual environment rather their current one. 15-213: Introduction to Computer Systems . 16. th. . Lecture, Oct. . 22. , 2013. Instructors:. . Randy Bryant, Dave . O’Hallaron. , and Greg . Kesden. Today . Address spaces. VM as a tool for caching. Prof. Eric Rotenberg. 1. Fall 2018. ECE 463/563, Microprocessor Architecture, Prof. Eric Rotenberg. Virtual Memory. Every program has its own virtual memory. Large virtual address space. Divided into . Perigon Live, a leading provider of digital event software, announces the addition of the Green Room to its feature-rich product. Visit: https://perigonlive.com Now that the coronavirus pandemic is coming under control thanks to the introduction of vaccines, some marketers mistakenly believe that virtual events are also coming to an end. Visit: https://perigonlive.com Perigon Live, a leading virtual event platform provider, offers a wide range of services and customizable options designed to make virtual events successful. Visit: https://perigonlive.com 17. th. Lecture, . November 1. , 2022. Instructors:. . Dave Andersen (15-213). Zack Weinberg (15-213). Brian Railing (15-513). David Varodayan (14-513). Review: Virtual Addressing. Each process has its own .