'Free block' diaporamas de présentation

Memory Management

Memory Management. Background Swapping Contiguous Allocation Paging Segmentation Segmentation with Paging. Background. Program must be brought into memory and placed within a process for it to be run.

1.54k views • 149 slides

Dynamic Memory Allocation

Dynamic Memory Allocation. Outline. Implementation of a simple allocator Explicit Free List Segregated Free List Suggested reading: 10.9, 10.10, 10.11, 10.12, 10.13. Segregate: ??. Dynamic Memory Allocation P731. Explicit vs. Implicit Memory Allocator

1.36k views • 114 slides

Memory Management

Memory Management. Download as Power Point file for saving or printing . Dynamic Memory Allocation. Need memory at runtime: Activation records Objects Explicit allocations: new , malloc , etc. Implicit allocations: strings, file buffers, arrays with dynamically varying size, etc.

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Chapter 11 Implementing File-Systems

Chapter 11 Implementing File-Systems. Chapter 11: Implementing File Systems . File-System Structure File-System Implementation Directory Implementation Allocation Methods Free-Space Management Efficiency and Performance Recovery Log-Structured File Systems NFS

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Tuning MATLAB for better performance

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Oracle SQL Tuning

http://www.peerlabs.com. Oracle SQL Tuning. Presented By Akin S Walter-Johnson Ms Principal PeerLabs, Inc. Email akin@peerlabs.com. SCOPE . How data is accessed and reconstituted joins Inform the user on how identify problems with SQL Repair of SQL Tuning can occur at 2 levels

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CPS 110 210 310 Introduction to Operating Systems Fall 2013

CPS 110 210 310 Introduction to Operating Systems Fall 2013. Jeff Chase Duke University. Resources to know about. Course Web http://www.cs.duke.edu/~chase/cps310 Or other links through CS department

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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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Introduction to Computer Systems 15-213/18-243, spring 2010 18 th Lecture, Mar. 25 th

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Dynamic Memory Allocation I November 1, 2006

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Memory Management I: Dynamic Storage Allocation Oct 8, 1998

Memory Management I: Dynamic Storage Allocation Oct 8, 1998. 15-213 Introduction to Computer Systems. Topics User-level view Policies Mechanisms. class14.ppt. Harsh Reality #3. Memory Matters Memory is not unbounded It must be allocated and managed

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I/O TAGGING SMALL FILES vs BIG FILES

I/O TAGGING SMALL FILES vs BIG FILES. Sivaraman Sivaraman Ming C hen. MOTIVATION- DISK CACHING. Universal challenges in the industry Keeping the right data cached Conventional approaches Evict cold data (LRU commonly used ) How I/O classification can help

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The Hardware/Software Interface CSE351 Winter 2013

The Hardware/Software Interface CSE351 Winter 2013. Memory Allocation I. Data & addressing Integers & floats Machine code & C x86 assembly programming Procedures & stacks Arrays & structs Memory & caches Processes Virtual memory Memory allocation Java vs. C. Roadmap. C:. Java:.

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Memory Management

Memory Management. Chapter 7. Memory Management. Subdividing memory to accommodate multiple processes Memory needs to be allocated efficiently to pack as many processes into memory as possible should be able to run a program whose size is larger than the available real memory.

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Contiguous Allocation of Disk Space

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CS 241 Discussion Section (2/9/2012)

CS 241 Discussion Section (2/9/2012). MP2 continued. Implement malloc, free, calloc and realloc Reuse free memory Sequential fit Segregated fit. Basic Allocator Mechanisms. Sequential fits (implicit or explicit single free list) best fit, first fit, or next fit placement Tradeoffs

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FILE SYSTEM IMPLEMENTATION

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Administering a heap of H bytes

Administering a heap of H bytes. Address = 0. Address = H - 1. Free List Pointer :. Initial Layout. H-4. Address = 4. Address = 0. Address = H - 1. Key: Free block: Live block: Block header:. Free List Pointer :. After program requests block of size 26. 26. H-34. Address = 4.

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The Royal Melbourne Show!

The Royal Melbourne Show!. By Lachi e B in 2008!. The biggest show in Victoria!.

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