'Physical page' diaporamas de présentation

Address Translation

Address Translation. Main Points. Address Translation Concept How do we convert a virtual address to a physical address? Flexible Address Translation Base and bound Segmentation Paging Multilevel translation Efficient Address Translation Translation Lookaside Buffers

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File system fun

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Computer Architecture Virtual Memory

Computer Architecture Virtual Memory. Dr. Lihu Rappoport. Virtual Memory. Provides the illusion of a large memory Different machines have different amount of physical memory Allows programs to run regardless of actual physical memory size

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CS 1104 Help Session II Virtual Memory

CS 1104 Help Session II Virtual Memory. Colin Tan, ctank@comp.nus.edu.sg S15-04-15. Motivation. Drive space is very very cheap Typically about 2cents per megabyte. It would be ideal if we could set aside a portion of drive space to be used as memory. Unfortunately disk drives are very slow

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The Building Blocks of Matter: Atoms

+. +. +. The Building Blocks of Matter: Atoms. -. -. -. +. +. +. -. -. +. +. -. -. -. Matter . Anything that has mass and takes up space (volume) Examples: A brick has mass and takes up space A desk has mass and takes up space A pencil has mass and takes up space

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Special Topics on Operating System

Special Topics on Operating System. R. C. Chang. Tentative Topics. Linux Internal Microkernels Window CE Internal Inferno Other Embedded Operating Systems. Trends of Operating System. Server : UNIX/Linux, Windows/NT Desktop : Windows 98/NT, UNIX/Linux

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Virtual Memory

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Virtual Memory

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Virtual Memory

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Virtual Memory

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Virtual Memory

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Presentation by Omar Abu-Azzah

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Managing Distributed, Shared L2 Caches through OS-Level Page Allocation

Managing Distributed, Shared L2 Caches through OS-Level Page Allocation. Jason Bosko March 5 th , 2008.

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Virtual Memory

Virtual Memory. Virtual Memory: Topics. Why virtual memory? Virtual to physical address translation Page Table Translation Lookaside Buffer (TLB). Another View of Memory Hierarchy. Upper Level. Regs. Faster. Instructions, Operands. Cache. {. Blocks. Thus far. L2 Cache. Blocks.

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CSE 506: Operating Systems

CSE 506: Operating Systems. Physical Page Reclamation. VA to PA, PA to VA. Saw how virtual addresses translate to physical Where is address 0x1000 in process 100? How to do the reverse? Given physical page X, what has a reference to it? Why would you want to know?.

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Pentium III Memory

Pentium III Memory. Pentium III 2-level Page Table Structure. Page directory 1024 4-byte page directory entries (PDEs) that point to page tables one page directory per process. page directory must be in memory when its process is running always pointed to by PDBR Page tables:

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Principle Behind Hierarchical Storage

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Virtual memory

Virtual memory. Titov Alexander 6.03.2010. Computer. memory. control. output. datapath. processor. input. Classic components of a computer. Mapping from a virtual to a physical address. Virtual address.

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