'Free blocks' diaporamas de présentation

Classic File Systems: FFS and LFS

Classic File Systems: FFS and LFS. Presented by Hakim Weatherspoon (Based on slides from Ben Atkin and Ken Birman ). A Fast File System for UNIX Marshall K. McKusick , William N. Joy, Samuel J Leffler , and Robert S Fabry. Bob Fabry

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An Introduction to Burr and Burton Academy Founded in 1829

An Introduction to Burr and Burton Academy Founded in 1829. Academics 68 Faculty Members 16 Student Average Class Size 60 percent of faculty hold advanced degrees 140 courses 12 Advanced Placement courses

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An Introduction to Burr and Burton Academy Founded in 1829

An Introduction to Burr and Burton Academy Founded in 1829. responsibility - integrity - service. Academics 68 Faculty Members 16 Student Average Class Size 60 percent of faculty hold advanced degrees 140 courses 12 Advanced Placement courses

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Net 321 : Computer Operating System

Net 321 : Computer Operating System. Lecture # 8 : Main Memory part 2. Chapter 8: Main Memory. Swapping.

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Memory Management (Ch 14)

It is a 800-pages topic, but here we want to do it in one/two class!. Memory Management (Ch 14). Dynamic memory allocation Language systems provide an important hidden player: Runtime memory manager Activation records Objects Explicit allocations: new , malloc , etc.

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Working Set Algorithms Thrashing

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Dynamic Memory Allocation: Basic Concepts CS220: Computer Systems II

Dynamic Memory Allocation: Basic Concepts CS220: Computer Systems II. Today. Basic concepts Implicit free lists. Top of heap ( brk ptr ). Dynamic Memory Allocation . Programmers use dynamic memory allocators (such as malloc ) to acquire VM at run time.

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L6: Malloc Lab Writing a Dynamic Storage Allocator October 30 , 2006

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Symmetric multiprocessor

inst.eecs.berkeley.edu/~cs61c CS61C : Machine Structures Lecture 5 – C Memory Management 2010-06-28. Instructor Paul Pearce. Symmetric multiprocessor

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Dynamic Memory Allocation II

Dynamic Memory Allocation II. Topics Explicit doubly-linked free lists Segregated free lists Review of pointers Memory-related perils and pitfalls. Summary of Key Allocator Policies. Placement policy: First fit, next fit, best fit, etc. Trades off lower throughput for less fragmentation

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Disk Allocation

Disk Allocation. CS 537 - Introduction to Operating Systems. Free Space. Need to keep track of which blocks on a disk are free Disk space is allocated by sectors 512 bytes typically The list of free blocks is also stored on disk. Bit Vector.

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Operating Systems {week 14}

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Debugging Malloc Lab

Debugging Malloc Lab. 15-213: Introduction to Computer Systems Recitation 12: Monday, Nov. 11 th , 2013 Marjorie Carlson Section A. News. Shell Lab: Grades will be released todayish .

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Advanced UNIX File Systems

Advanced UNIX File Systems. Berkley Fast File System, Logging File System, Virtual File Systems. Classical Unix File System. Traditional UNIX file system keeps I-node information separately from the data blocks; Accessing a file involves a long seek from I-node to the data.

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CSE 451: Operating Systems

CSE 451: Operating Systems. Section 8 Project 2b wrap-up, ext2, and Project 3. Project 2b. Make sure to read thoroughly through the requirements for the writeup in part 6 and answer every question There are multiple ways of measuring throughput that you should discuss

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Run time vs. Compile time

Run time vs. Compile time. The compiler must generate code to handle issues that arise at run time Representation of various data types Procedure linkage Storage organization. Data representation. Fundamental types are supported directly by machine operations Enumerated types? Booleans?

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Contiguous Allocation of Disk Space

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Chapter 12: File System Implementation

Chapter 12: File System Implementation. Virtual File Systems. Allocation Methods. Folder Implementation. Free-Space Management. Directory Block Placement. Recovery. Virtual File Systems. An object-oriented way to support multiple file system types: VFS defines API: in pseudo-Java:

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FEDkit

FEDkit. FED Slink64 readout kit Dominique Gigi, Eric Cano (CERN EP/CMD). CMS ECAL Week, July 2002. Eric CANO, CERN/EP-CMD. 1. Topics. Generic III board FEDkit-G3 boards (sender and receiver) FEDkit software library Current status. Generic III design.

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XtremIO Data Protection (XDP) Explained

XtremIO Data Protection (XDP) Explained. View this presentation in Slide Show mode. XDP Benefits. Combines the best traits of traditional RAID with none of its drawbacks Ultra-low 8% fixed capacity overhead No RAID levels, stripe sizes, chunk sizes, etc. High levels of data protection

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