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Net 321 : Computer Operating System

Net 321 : Computer Operating System

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

By inge
(71 views)

Operating Systems {week 14}

Operating Systems {week 14}

Rensselaer Polytechnic Institute CSCI-4210 – Operating Systems David Goldschmidt, Ph.D. Operating Systems {week 14}. Hierarchical storage architecture. very fast. very small. volatile. managed as part of the filesystem. non-volatile. very slow. very large. File management.

By xander
(83 views)

XtremIO Data Protection (XDP) Explained

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

By early
(157 views)

Debugging Malloc Lab

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 .

By vea
(175 views)

Dynamic Memory Allocation: Basic Concepts CS220: Computer Systems II

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.

By valora
(143 views)

Working Set Algorithms Thrashing

Working Set Algorithms Thrashing

Working Set Algorithms Thrashing. Ken Birman. Reminders. We’ve focused on demand paging Each process is allocated  pages of memory As a process executes it references pages On a miss a page fault to the O/S occurs

By jetta
(67 views)

Classic File Systems: FFS and LFS

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

By tanner
(88 views)

An Introduction to Burr and Burton Academy Founded in 1829

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

By pierce
(100 views)

Advanced UNIX File Systems

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.

By bess
(186 views)

An Introduction to Burr and Burton Academy Founded in 1829

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

By kirkan
(48 views)

Run time vs. Compile time

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?

By briar
(235 views)

CSE 451: Operating Systems

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

By myra
(69 views)

Disk Allocation

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.

By yoko
(97 views)

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

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

L6: Malloc Lab Writing a Dynamic Storage Allocator October 30 , 2006. 15-213 “The course that gives CMU its Zip!”. Topics Memory Allocator (Heap) L6: Malloc Lab Reminders L6: Malloc Lab Due Nov 10, 2006 . Section A (Donnie H Kim) recitation8 .ppt (some slides from lecture notes).

By tovah
(132 views)

FEDkit

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.

By shandi
(153 views)

Symmetric multiprocessor

Symmetric multiprocessor

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

By aelwen
(133 views)

Dynamic Memory Allocation II

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

By ksena
(108 views)

Memory Management (Ch 14)

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.

By quana
(94 views)

Chapter 12: File System Implementation

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:

By margo
(132 views)

Contiguous Allocation of Disk Space

Contiguous Allocation of Disk Space

Contiguous Allocation of Disk Space. Linked Allocation. File-Allocation Table (DOS, others). Section of disk at start of partition Table with one entry per disk block Indexed by block# Each entry contains link to next block Special code for EOF “0” means empty block. index table.

By lawson
(168 views)

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