'Disk block' diaporamas de présentation

ecs150 Fall 2007 : Operating System #5: File Systems (chapters: 6.4~6.7, 8)

ecs150 Fall 2007 : Operating System #5: File Systems (chapters: 6.4~6.7, 8). Dr. S. Felix Wu Computer Science Department University of California, Davis http://www.cs.ucdavis.edu/~wu/ sfelixwu@gmail.com. File System Abstraction. Files Directories. System-call interface.

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Chapter 11 File Systems: Implementation

1.09k views • 107 slides

Class 17: Flash!

Class 17: Flash!. cs4414 Spring 2014 University of Virginia David Evans. Image: Mathias Krumbholz ( wikipedia commons). Plan for Today. Recap: Unix System 5 File System Creating a File Better File Systems: ZFS, RAID Flash Memory. PS4 is due 11:59pm Sunday, 6 April.

687 views • 68 slides

652 views • 63 slides

An Analysis of Data Corruption in the Storage Stack

An Analysis of Data Corruption in the Storage Stack. Garth R. Goodson Network Appliance, Inc. Lakshmi N. Bairavasundaram Andrea C. Arpaci-Dusseau Remzi H. Arpaci-Dusseau University of Wisconsin-Madison. Bianca Schroeder University of Toronto. Does Data Corruption Occur?.

753 views • 52 slides

An Analysis of Data Corruption in the Storage Stack

An Analysis of Data Corruption in the Storage Stack. Garth R. Goodson Network Appliance, Inc. Lakshmi N. Bairavasundaram Andrea C. Arpaci-Dusseau Remzi H. Arpaci-Dusseau University of Wisconsin-Madison. Bianca Schroeder University of Toronto. Does Data Corruption Occur?.

661 views • 52 slides

685 views • 52 slides

Operating Systems

Operating Systems. Certificate Program in Software Development CSE-TC and CSIM, AIT September--November, 2003. Objectives discuss file storage and access on secondary storage (a hard disk). 11. File System Implementation (S&G, Ch. 11). Contents. 1. A Hard Disk 2. File System Organization

478 views • 40 slides

Supporting High Performance I/O with Effective Caching and Prefetching

Supporting High Performance I/O with Effective Caching and Prefetching. Song Jiang The ECE Department Wayne State University. Disk I/O performance is critical to data-intensive applications. Data-intensive applications demand efficient I/O support . Database; Multimedia;

500 views • 37 slides

Geiger: Monitoring the Buffer Cache in a Virtual Machine Environment

Geiger: Monitoring the Buffer Cache in a Virtual Machine Environment. Stephen T. Jones Andrea C. Arpaci-Dusseau Remzi H. Arpaci-Dusseau Department of Computer Sciences. Buffer Cache. In modern OSes, file system buffer and virtual memory system are unified

548 views • 37 slides

Operating Systems Design (CS 423)

Operating Systems Design (CS 423). Elsa L Gunter 2112 SC, UIUC http://www.cs.illinois.edu/class/cs423/. Based on slides by Roy Campbell, Sam King, and Andrew S Tanenbaum. Indexed Files. Pros Can easily grow (up to # of blocks allocated in header) Easy random access of loc. Calculation

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SE-292 High Performance Computing File Systems

SE-292 High Performance Computing File Systems. FILE SYSTEMS. What is a file? Storage that continues to exist beyond lifetime of program ( persistent ) Named sequence of bytes stored on disk. Moving-head Disk Mechanism. About Disks. Platter: metal disk covered with magnetic material

454 views • 32 slides

SE-292 High Performance Computing File Systems

SE-292 High Performance Computing File Systems. FILE SYSTEMS. What is a file? Storage that continues to exist beyond lifetime of program ( persistent ) Named sequence of bytes stored on disk. Moving-head Disk Mechanism. About Disks. Platter: metal disk covered with magnetic material

321 views • 32 slides

Buffer Cache

Buffer Cache. ? ?. ?? Why Needs ? Dat structure Algorithms Getblk(), brease(), bread(), breada(), bwrite(). Buffer Cache ? ??. File system ? Hard Disk ?? overview ?? ?? Contains the data in recently used disk blocks Software structure, not hardware cache. Buffer Cache ? ???? ??.

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HPC Storage Current Status and Futures

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I/O-Algorithms

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File Systems

File Systems. CSE 121 Spring 2003 Keith Marzullo. References. In order of relevance... Maurice J. Bach, The Design of the UNIX Operating System, Chapters 3-5. Avi Silberschatz et.al., Operating System Concepts, Sixth Edition , Chapters 11-12.

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External Memory Algorithms for Geometric Problems

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Chapter 12: File-System Implementation CSS503 Systems Programming

Chapter 12: File-System Implementation CSS503 Systems Programming. Prof. Munehiro Fukuda Computing & Software Systems University of Washington Bothell. File System Layers. Applications. Access files through open, read, write, lseek, and close

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Lecture Topics: 12/1

Lecture Topics: 12/1. File System Implementation Space allocation Free Space Directory implementation Caching Disk Scheduling File System/Disk Interaction FFS LFS. Disk Block Allocation. The basic unit of storage on a disk is a block Block sizes vary, but think 512 bytes

252 views • 14 slides