Chapter 8: Operating Systems and Utility Programs
... – The operating system assigned a portion of storage medium, i.e. a hard disk, to function as additional RAM – Slower than RAM – Swap file • The part of the hard disk used for virtual memory • Paging is the technique of swapping items between memory and storage – It’s a time consuming process ...
... – The operating system assigned a portion of storage medium, i.e. a hard disk, to function as additional RAM – Slower than RAM – Swap file • The part of the hard disk used for virtual memory • Paging is the technique of swapping items between memory and storage – It’s a time consuming process ...
The Amoeba Distributed Operating System
... single-board SPARC computers connected by an Ethernet, forming a powerful processor pool. [Amoeba 1996 ] This equipment is pictured next. It is used for research in distributed and parallel operating systems, runtime systems, languages, and applications. ...
... single-board SPARC computers connected by an Ethernet, forming a powerful processor pool. [Amoeba 1996 ] This equipment is pictured next. It is used for research in distributed and parallel operating systems, runtime systems, languages, and applications. ...
operating system
... The OS maintains additional information about running programs (location in memory, stack pointer, program counter). When a program is run, the operating system converts it into a process. It is the process, rather than the simple program, that the processor executes. ...
... The OS maintains additional information about running programs (location in memory, stack pointer, program counter). When a program is run, the operating system converts it into a process. It is the process, rather than the simple program, that the processor executes. ...
Module 3: Operating
... users or multiple jobs running at the same time. Accounting – keeping track of and recording how much and what kinds of computer resources a user uses for account billing or for accumulating usage statistics. Protection – ensuring that all access to system resources is controlled. ...
... users or multiple jobs running at the same time. Accounting – keeping track of and recording how much and what kinds of computer resources a user uses for account billing or for accumulating usage statistics. Protection – ensuring that all access to system resources is controlled. ...
File management
... OS keeps track of memory for each program One program runs until it needs data from the user, then the OS switches to the other program ...
... OS keeps track of memory for each program One program runs until it needs data from the user, then the OS switches to the other program ...
Chorusamoeba
... Using coupling between large virtual memory management and IPC large messages can be transferred using copy-on-write techniques or by moving page descriptors Messages are addressed to PoRts and not to actors. The port abstraction provides the necessary decoupling of the interface of a service and it ...
... Using coupling between large virtual memory management and IPC large messages can be transferred using copy-on-write techniques or by moving page descriptors Messages are addressed to PoRts and not to actors. The port abstraction provides the necessary decoupling of the interface of a service and it ...
Ch2. Operating System Structures
... 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 other ...
... 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 other ...
Systems Software
... – These programs provide resource management services of many kinds such as the control and use of hardware resources including • disk space • memory • CPU time allocation and • peripheral devices. ...
... – These programs provide resource management services of many kinds such as the control and use of hardware resources including • disk space • memory • CPU time allocation and • peripheral devices. ...
CS211 Slides
... was not meant to be a user-friendly operating system – Instead, meant to be “user-helpful” and very powerful ...
... was not meant to be a user-friendly operating system – Instead, meant to be “user-helpful” and very powerful ...
OS-DS-Arch
... while coexisting with a non-real-time application such as web browsing. That is kernel would provide only the most basic mechanisms upon which the general resource management tasks at a node are carried out. Server modules would be dynamically loaded as required, to implement the required RM policie ...
... while coexisting with a non-real-time application such as web browsing. That is kernel would provide only the most basic mechanisms upon which the general resource management tasks at a node are carried out. Server modules would be dynamically loaded as required, to implement the required RM policie ...
Document - Oman College of Management & Technology
... or multiple jobs running at the same time. Accounting – keep track of and record which users use how much and what kinds of computer resources for account billing or for accumulating usage statistics. Protection – ensuring that all access to system resources is controlled. ...
... or multiple jobs running at the same time. Accounting – keep track of and record which users use how much and what kinds of computer resources for account billing or for accumulating usage statistics. Protection – ensuring that all access to system resources is controlled. ...
I. Course code and Title OPERATING SYSTEM CONCEPTS II
... This course covers the basic concepts of Operating Systems. It includes the following topics Overview: Operating System Role, Purpose and Functionality; Computing Environments: Single User, Multi User, Multiple Simultaneous Computations; Goals of Parallelism (e.g., Throughput) versus Concurrency (e. ...
... This course covers the basic concepts of Operating Systems. It includes the following topics Overview: Operating System Role, Purpose and Functionality; Computing Environments: Single User, Multi User, Multiple Simultaneous Computations; Goals of Parallelism (e.g., Throughput) versus Concurrency (e. ...
MachOS_Rajesh
... shared memory and message-based communication Emulation of operating system environment such as UNIX achieved on Mach Generic UNIX system calls can be implemented outside Mach kernel Other features supported are transaction and database facilities, task migration, and AI knowledge bases CS 5204 ...
... shared memory and message-based communication Emulation of operating system environment such as UNIX achieved on Mach Generic UNIX system calls can be implemented outside Mach kernel Other features supported are transaction and database facilities, task migration, and AI knowledge bases CS 5204 ...
Operating-System Structures
... Modern OS should be developed carefully due to their size and complexity. A common approach is to divide the systems into small components. MS-DOS System Structure MS-DOS – written to provide the most functionality in the least space Not divided into modules Although MS-DOS has some struct ...
... Modern OS should be developed carefully due to their size and complexity. A common approach is to divide the systems into small components. MS-DOS System Structure MS-DOS – written to provide the most functionality in the least space Not divided into modules Although MS-DOS has some struct ...
Review Exercise 2
... (d)Control hardware devices (12)Which of the following statement about IP Address/Port is NOT correct? (a)IP address is the unique identification on a computer that is connecting to the Internet. (b)IP address are the input/output locations of a computer where messages should send in or out. (c)If ...
... (d)Control hardware devices (12)Which of the following statement about IP Address/Port is NOT correct? (a)IP address is the unique identification on a computer that is connecting to the Internet. (b)IP address are the input/output locations of a computer where messages should send in or out. (c)If ...
Chapter I Introduction
... • Delayed writes work quite well – Most systems use it • It has a major drawback – We will lose data if the system or the program crashes • After the program issued a write but • Before the data were saved to disk ...
... • Delayed writes work quite well – Most systems use it • It has a major drawback – We will lose data if the system or the program crashes • After the program issued a write but • Before the data were saved to disk ...
OS Services System calls and their types
... • The system call interface invokes intended system call in OS kernel and returns status of the system call and any return values • The caller need know nothing about how the system call is implemented – Just needs to obey API and understand what OS will do as a result call – Most details of OS inte ...
... • The system call interface invokes intended system call in OS kernel and returns status of the system call and any return values • The caller need know nothing about how the system call is implemented – Just needs to obey API and understand what OS will do as a result call – Most details of OS inte ...
CIT 500: IT Fundamentals
... Operating System Services • Execution of a program • Input and output operations performed by programs • Communication between processes • Error detection and reporting • Manipulation of all types of files • Management of users and security ...
... Operating System Services • Execution of a program • Input and output operations performed by programs • Communication between processes • Error detection and reporting • Manipulation of all types of files • Management of users and security ...
Nodes of a distributed system
... different machines, or one mechanism for local communication and something else for global communication. ■ Process management must be same everywhere. Must not depend on machine type. ■ File system must appear the same everywhere. Every file should be visible at every location subject to protection ...
... different machines, or one mechanism for local communication and something else for global communication. ■ Process management must be same everywhere. Must not depend on machine type. ■ File system must appear the same everywhere. Every file should be visible at every location subject to protection ...
Ch 5 Quick Quiz
... T F 2. With sequential processing techniques, multiple tasks are performed at the exact same time. ...
... T F 2. With sequential processing techniques, multiple tasks are performed at the exact same time. ...