09CS212 OPERATING SYSTEM Credits: 3:0:0 Course Objective: To
... To gain knowledge about the Operating Systems concepts such as process, main management, secondary memory management, CPU and disk scheduling etc. ...
... To gain knowledge about the Operating Systems concepts such as process, main management, secondary memory management, CPU and disk scheduling etc. ...
Introduction - UW Courses Web Server
... Several jobs are kept in main memory at the same time. OS picks one of them to execute. The job may have to wait for a slow I/O operation to complete. OS switches to and executes another job. To facilitate multiprogramming, OS needs: Job scheduling Memory management CSS430 Introduction ...
... Several jobs are kept in main memory at the same time. OS picks one of them to execute. The job may have to wait for a slow I/O operation to complete. OS switches to and executes another job. To facilitate multiprogramming, OS needs: Job scheduling Memory management CSS430 Introduction ...
An Overview Of Windows Nt System
... • Benefits for being multiprocessing system • Ability to run OS code on any available processor and on multiple processors at one time. • Multiple threads of execution within a single process. • Server processes that use multiple threads to process requests from more than one client simultaneously. ...
... • Benefits for being multiprocessing system • Ability to run OS code on any available processor and on multiple processors at one time. • Multiple threads of execution within a single process. • Server processes that use multiple threads to process requests from more than one client simultaneously. ...
Abstract View of System Components
... Several jobs in memory at once One job at a time “using” CPU One program executes – others wait Hardware includes supervisor mode “Hybrid” OS (software and human) provides – Protection – Scheduling – Accounting – Resource allocation (files, software, … ) ...
... Several jobs in memory at once One job at a time “using” CPU One program executes – others wait Hardware includes supervisor mode “Hybrid” OS (software and human) provides – Protection – Scheduling – Accounting – Resource allocation (files, software, … ) ...
Centralized computing
... and executing of the instruction. Single-core processors can only process one instruction at a time • Dual-core processor contains two cores (Such as Intel Core Duo). ...
... and executing of the instruction. Single-core processors can only process one instruction at a time • Dual-core processor contains two cores (Such as Intel Core Duo). ...
390aLecture01_12wi
... • output: goes to console • errors can also be printed (by default, sent to console like output) • parameters vs. input parameters: before Enter is pressed; sent in by shell input: after Enter is pressed; sent in by user ...
... • output: goes to console • errors can also be printed (by default, sent to console like output) • parameters vs. input parameters: before Enter is pressed; sent in by shell input: after Enter is pressed; sent in by user ...
FAT:
... system HPFS contained several important new features. When Microsoft created their new operating system, they borrowed many of these concepts for NTFS. When Microsoft created their new operating system, they borrowed many of these concepts for NTFS. Probably as a result of this common ancestry, HPFS ...
... system HPFS contained several important new features. When Microsoft created their new operating system, they borrowed many of these concepts for NTFS. When Microsoft created their new operating system, they borrowed many of these concepts for NTFS. Probably as a result of this common ancestry, HPFS ...
390Lecture1
... • output: goes to console • errors can also be printed (by default, sent to console like output) • parameters vs. input parameters: before Enter is pressed; sent in by shell input: after Enter is pressed; sent in by user ...
... • output: goes to console • errors can also be printed (by default, sent to console like output) • parameters vs. input parameters: before Enter is pressed; sent in by shell input: after Enter is pressed; sent in by user ...
Operating Systems
... 2. Loads programs into the computers memory so that you can use them. 3. Co-ordinates how programs work with the CPU, RAM, keyboard, mouse, printer and other hardware as well as with software. 4. Manages the way information is stored on and retreived from disks. The User Interface With an OS you see ...
... 2. Loads programs into the computers memory so that you can use them. 3. Co-ordinates how programs work with the CPU, RAM, keyboard, mouse, printer and other hardware as well as with software. 4. Manages the way information is stored on and retreived from disks. The User Interface With an OS you see ...
Overview - Seattle University
... – Accounting - To keep track of which users use how much and what kinds of computer resources – Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each othe ...
... – Accounting - To keep track of which users use how much and what kinds of computer resources – Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each othe ...
Chapter 3: Threads, SMP and Microkernels
... 23. List five services provided by an OS that are designed to make it more convenient for users to use the computer system. In what aces it would be impossible for user-level programs to provide these services? Explain. ...
... 23. List five services provided by an OS that are designed to make it more convenient for users to use the computer system. In what aces it would be impossible for user-level programs to provide these services? Explain. ...
2.3 Operating System Design and Implementation
... or general purpose. Beyond this highest design level, the requirements may be much harder to specify. The requirements can, however, be divided into two basic groups: user goals and system goals. Users desire certain obvious properties in a system. The system should be convenient to use, easy to lea ...
... or general purpose. Beyond this highest design level, the requirements may be much harder to specify. The requirements can, however, be divided into two basic groups: user goals and system goals. Users desire certain obvious properties in a system. The system should be convenient to use, easy to lea ...
in memory
... Resources can be shared between different jobs. Each job can be allocated a portion of time to use the resource. ...
... Resources can be shared between different jobs. Each job can be allocated a portion of time to use the resource. ...
CS 471-001: Operating Systems Spring 2017 Department of
... an official/verifiable proof of why you are missing the exam before the exam. Once it is validated, instructor can arrange a make exam. Honor code: - All students must adhere to the GMU Honor Code and the Computer Science Department's Honor Code Policies. - The students are supposed to work indi ...
... an official/verifiable proof of why you are missing the exam before the exam. Once it is validated, instructor can arrange a make exam. Honor code: - All students must adhere to the GMU Honor Code and the Computer Science Department's Honor Code Policies. - The students are supposed to work indi ...
Real-Time Systems
... • a real-time system is stable if the system will meet the deadlines of its most critical, highest-priority tasks even if some less critical task deadlines are not always met ...
... • a real-time system is stable if the system will meet the deadlines of its most critical, highest-priority tasks even if some less critical task deadlines are not always met ...
ITS 225 (Operating Systems) Lecture Notes
... – CPU stops what it is doing and transfers control to an interrupt service routine (ISR) – May be different ISRs for different types of interrupts. The list of ISR locations is called the interrupt vector. – Example: the Intel 386 architecture contains 16 interrupt lines (IRQ0-IRQ15), requiring a 16 ...
... – CPU stops what it is doing and transfers control to an interrupt service routine (ISR) – May be different ISRs for different types of interrupts. The list of ISR locations is called the interrupt vector. – Example: the Intel 386 architecture contains 16 interrupt lines (IRQ0-IRQ15), requiring a 16 ...
Chapter 3: Operating
... To improve both the utilization of the CPU and the speed of the computer’s response to its users, we must keep several programs in memory. The operating system is responsible for the following activities in connections with memory management: ...
... To improve both the utilization of the CPU and the speed of the computer’s response to its users, we must keep several programs in memory. The operating system is responsible for the following activities in connections with memory management: ...
OS/2 API
... called sessions, processes, and threads. •OS/2 is a preemptive, priority based, multitasking system. •The scheduler implements a multilevel priority scheme with dynamic priority variation and round-robin scheduling within a priority level. ...
... called sessions, processes, and threads. •OS/2 is a preemptive, priority based, multitasking system. •The scheduler implements a multilevel priority scheme with dynamic priority variation and round-robin scheduling within a priority level. ...
Lecture 1 Overview and History
... too many users run compute-intensive jobs. Virtual memory breaks down if working set is too large (thrashing), or if there are too many large processes (machine runs out of swap space). ...
... too many users run compute-intensive jobs. Virtual memory breaks down if working set is too large (thrashing), or if there are too many large processes (machine runs out of swap space). ...
chp06
... Initially, PCs were only viewed as another type of “dumb” terminals, however soon thereafter (due to improvements in technology) people realized that much of the work of the central computer can be done by the desktop PC. In late 1980s and in the 1990s computing changed from centralized environment ...
... Initially, PCs were only viewed as another type of “dumb” terminals, however soon thereafter (due to improvements in technology) people realized that much of the work of the central computer can be done by the desktop PC. In late 1980s and in the 1990s computing changed from centralized environment ...
N4Less11
... • Under an OS such as Windows, you see a familiar interface no matter what programs you use. • In a GUI, each program opens and runs in a separate window—a frame that presents the program and its ...
... • Under an OS such as Windows, you see a familiar interface no matter what programs you use. • In a GUI, each program opens and runs in a separate window—a frame that presents the program and its ...
Norman Matloff, Unix Processes
... A process is an instance of running a program. If, for example, three people are running the same program simultaneously, there are three processes there, not just one. In fact, we might have more than one process running even with only person executing the program, because (you will see later) the ...
... A process is an instance of running a program. If, for example, three people are running the same program simultaneously, there are three processes there, not just one. In fact, we might have more than one process running even with only person executing the program, because (you will see later) the ...
CH 4 – Review - WordPress.com
... Path – the hierarchy of folders that leads to a stored file Performance – the speed at which the computer functions Cold boot- starting a computer from a no-power state Warm boot – a restart of the computer without turning off the power Booting – the process of starting your computer Linux – this op ...
... Path – the hierarchy of folders that leads to a stored file Performance – the speed at which the computer functions Cold boot- starting a computer from a no-power state Warm boot – a restart of the computer without turning off the power Booting – the process of starting your computer Linux – this op ...