Lecture 11 Operating Systems • Free - VU LMS
... In a complex machine, having a part move more quickly just because system resources are available may be just as catastrophic as having it not move at all because the system was busy ...
... In a complex machine, having a part move more quickly just because system resources are available may be just as catastrophic as having it not move at all because the system was busy ...
virtual machine
... • Affected by choice of hardware, type of system • User goals and System goals – User goals – operating system should be convenient to use, easy to learn, reliable, safe, and fast – System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, erro ...
... • Affected by choice of hardware, type of system • User goals and System goals – User goals – operating system should be convenient to use, easy to learn, reliable, safe, and fast – System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, erro ...
Computers
... interrupted processes Mutual exclusion: keeping shared resource use separate Determinate program operation: programs get the same result every time independent of what else is running Deadlock ...
... interrupted processes Mutual exclusion: keeping shared resource use separate Determinate program operation: programs get the same result every time independent of what else is running Deadlock ...
COS 318: Operating Systems Introduction Kai Li and Andy Bavier Computer Science Department
... It is magic to realize what we want It gives us power (reduce fear factor) Parallel programs run on OS OS runs on parallel hardware Best way to learn concurrent programming ...
... It is magic to realize what we want It gives us power (reduce fear factor) Parallel programs run on OS OS runs on parallel hardware Best way to learn concurrent programming ...
Operating Systems
... • Before: machine waits for I/O to complete • New approach: more work by the OS – Allow CPU to execute while waiting – Add buffering • Data fills “buffer” and then output ...
... • Before: machine waits for I/O to complete • New approach: more work by the OS – Allow CPU to execute while waiting – Add buffering • Data fills “buffer” and then output ...
File management
... (7) USB 2.0 (6 in back and 1 in front in the media card reader), (2) IEEE 1394 Firewire Ports, Parallel, Serial and (2) PS/2 ...
... (7) USB 2.0 (6 in back and 1 in front in the media card reader), (2) IEEE 1394 Firewire Ports, Parallel, Serial and (2) PS/2 ...
Lecture1
... minicomputer must keep all users happy Users of dedicate systems such as workstations have dedicated resources but frequently use shared resources from servers Handheld computers are resource poor, optimized for usability and battery life Some computers have little or no user interface, such a ...
... minicomputer must keep all users happy Users of dedicate systems such as workstations have dedicated resources but frequently use shared resources from servers Handheld computers are resource poor, optimized for usability and battery life Some computers have little or no user interface, such a ...
Computer Operating Systems
... multiprocessing : Supports running a program on more than one CPU. ...
... multiprocessing : Supports running a program on more than one CPU. ...
EECE 432– Operating Systems
... a) Three 50-minute lectures per week or two 75 minutes per weel. b) Use of computer lab or personal computer is needed for working on the projects. Course outcomes: At the end of the course students should be able to: 1. Understand operating system concepts. 2. Read and understand kernel code. 3. Bu ...
... a) Three 50-minute lectures per week or two 75 minutes per weel. b) Use of computer lab or personal computer is needed for working on the projects. Course outcomes: At the end of the course students should be able to: 1. Understand operating system concepts. 2. Read and understand kernel code. 3. Bu ...
Operating Systems
... It should point out that the operating system handles more than one process at a time. This is called multi-tasking. Therefore, an operating system always needs to frequent update the status of many tasks and their related information. The CPU needs to swap from one process to another. Even when you ...
... It should point out that the operating system handles more than one process at a time. This is called multi-tasking. Therefore, an operating system always needs to frequent update the status of many tasks and their related information. The CPU needs to swap from one process to another. Even when you ...
Computer Science 8530 Advanced Operating Systems Fall 2016
... 17. Where is it likely that the majority of user-accessible register contents will be saved when a process is moved from the running/current state to the ready state? Where else might some other register contents be saved? Use Xinu on the Galileo as a specific case. 18. The three characteristic p ...
... 17. Where is it likely that the majority of user-accessible register contents will be saved when a process is moved from the running/current state to the ready state? Where else might some other register contents be saved? Use Xinu on the Galileo as a specific case. 18. The three characteristic p ...
Word Processors
... Understand the role of the Operating Systems and common examples, Know the differences between CLI and GUI operating systems, Understand the role of device drivers, Know different types of utility software that are used to keep computers systems running smoothly. ...
... Understand the role of the Operating Systems and common examples, Know the differences between CLI and GUI operating systems, Understand the role of device drivers, Know different types of utility software that are used to keep computers systems running smoothly. ...
Chapter 1 PowerPoint
... • Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing – Response time should be < 1 second – Each user has at least one program executing in memory (one process) – If severa ...
... • Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing – Response time should be < 1 second – Each user has at least one program executing in memory (one process) – If severa ...
Hobby Operating System
... operating system, designed to help you make the most of your computer. It's an independent, portable and free project, aiming at being compatible with AmigaOS at the API level (like Wine, unlike UAE), while improving on it in many areas. The source code is available under an open source license, whi ...
... operating system, designed to help you make the most of your computer. It's an independent, portable and free project, aiming at being compatible with AmigaOS at the API level (like Wine, unlike UAE), while improving on it in many areas. The source code is available under an open source license, whi ...
Judul - my documentation
... • Kernel must remain in memory while the computer runs • If another program uses the kernel’s memory when the kernel needs it, the computer will crash – Memory Management • OS keeps track of memory locations to prevent programs and data from overlapping each other • Swaps portions of programs and da ...
... • Kernel must remain in memory while the computer runs • If another program uses the kernel’s memory when the kernel needs it, the computer will crash – Memory Management • OS keeps track of memory locations to prevent programs and data from overlapping each other • Swaps portions of programs and da ...
Module 3: Operating-System Structures
... volatile and too small to accommodate all data and programs permanently, the computer system must provide secondary storage to back up main memory. • Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. • The operating system is responsible for ...
... volatile and too small to accommodate all data and programs permanently, the computer system must provide secondary storage to back up main memory. • Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. • The operating system is responsible for ...
evolution of operating systems
... Distributed operating systems 1980’s ¾ Arose from networking technology advances ¾ Used resources from many computers and gave the illusion of one to multiple users ¾ Parts of a program run simultaneously on two or more computers ...
... Distributed operating systems 1980’s ¾ Arose from networking technology advances ¾ Used resources from many computers and gave the illusion of one to multiple users ¾ Parts of a program run simultaneously on two or more computers ...
Operating System Concepts, Terminology, and History
... operating system to be the supporting software structure on which application programs run. – This support structure includes the facilities to manage the computer system's resources and any utility programs needed to maintain and configure the operating system. • The heart of system administration ...
... operating system to be the supporting software structure on which application programs run. – This support structure includes the facilities to manage the computer system's resources and any utility programs needed to maintain and configure the operating system. • The heart of system administration ...
csc1 intro
... OS must protect each program’s memory area to ensure that instructions and data don’t “leak” into an area allocated to another program. If it fails, programs can crash…more shortly! ...
... OS must protect each program’s memory area to ensure that instructions and data don’t “leak” into an area allocated to another program. If it fails, programs can crash…more shortly! ...
Chapter 2 Operating System Overview
... • The sequence in which the programs are executed depends on their relative priority (see scheduler) and whether they are waiting for I/O • After an interrupt handler completes, control may not return to the program that was executing at the time of the interrupt ...
... • The sequence in which the programs are executed depends on their relative priority (see scheduler) and whether they are waiting for I/O • After an interrupt handler completes, control may not return to the program that was executing at the time of the interrupt ...
bt0070 - SMU Assignments
... 5 What are computer viruses? How do they affect our system? 3+7 10 Answer: A computer virus is written with an intention of infecting other programs. It isa part of a program that piggybacks on to a valid program. It ...
... 5 What are computer viruses? How do they affect our system? 3+7 10 Answer: A computer virus is written with an intention of infecting other programs. It isa part of a program that piggybacks on to a valid program. It ...
Introduction
... • User applications don’t communicate directly with low-level hardware components, and instead delegate such tasks to the kernel via system calls. • System calls are usually contained in a collection of programs, that is, a library such as the C library (libc), and they provide an interface that all ...
... • User applications don’t communicate directly with low-level hardware components, and instead delegate such tasks to the kernel via system calls. • System calls are usually contained in a collection of programs, that is, a library such as the C library (libc), and they provide an interface that all ...