Kernel - Duke University
... of execution within the same address space. – Create a context for a new thread with makecontext. – Modify saved contexts at will. – Context switch with swapcontext: transfer a core from one thread to another (“change drivers”) ...
... of execution within the same address space. – Create a context for a new thread with makecontext. – Modify saved contexts at will. – Context switch with swapcontext: transfer a core from one thread to another (“change drivers”) ...
Operating Systems
... movement, storage, and processing of data. • The OS is responsible for managing these resources. ...
... movement, storage, and processing of data. • The OS is responsible for managing these resources. ...
Section 10: Intro to I/O and File Systems
... • Second Chance Algorithm A modified form of FIFO that is used to approximate LRU. Each page also has a reference of a use bit to keep track of whether that page has been accessed. It works by looking at the front of the queue as FIFO does, but instead of immediately paging out that page, it checks ...
... • Second Chance Algorithm A modified form of FIFO that is used to approximate LRU. Each page also has a reference of a use bit to keep track of whether that page has been accessed. It works by looking at the front of the queue as FIFO does, but instead of immediately paging out that page, it checks ...
Batch systems
... computer, such as the IBM 1401 ..... Other, much more expensive machines, such as the IBM 7094, were used for the real computing. After ... collecting a batch of jobs, the tape was rewound and brought into the machine room, where it was mounted on a tape drive [ connected to the 7094 ] The operator ...
... computer, such as the IBM 1401 ..... Other, much more expensive machines, such as the IBM 7094, were used for the real computing. After ... collecting a batch of jobs, the tape was rewound and brought into the machine room, where it was mounted on a tape drive [ connected to the 7094 ] The operator ...
Operating system - Department of Computer Science
... “The one program running at all times on the computer” is the kernel. Everything else is either a system program (ships with the operating system) or an application program So we may say: OS is a program (or programs) that manages computer hardware and resources, Provides user friendly interface ...
... “The one program running at all times on the computer” is the kernel. Everything else is either a system program (ships with the operating system) or an application program So we may say: OS is a program (or programs) that manages computer hardware and resources, Provides user friendly interface ...
Slides - Bilkent University Computer Engineering Department
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
Lecture slides
... The idea behind operating different services at different run levels essentially revolves around the fact that different systems can be used in different ways. Some services cannot be used until the system is in a particular state, or mode, such as being ready for more than one user or having networ ...
... The idea behind operating different services at different run levels essentially revolves around the fact that different systems can be used in different ways. Some services cannot be used until the system is in a particular state, or mode, such as being ready for more than one user or having networ ...
Types of services
... to provide an environment in which a user can execute programs in a convenient and efficient manner. Thus we can say that: An OS is ...
... to provide an environment in which a user can execute programs in a convenient and efficient manner. Thus we can say that: An OS is ...
CS204 Operating Systems
... 1. To impart fundamental understanding of the purpose, structure, functions of operating system. 2. To impart the key design issues of an operating system Syllabus Basic concepts of Operating System, its structure, Process management, inter-process communication, process synchronization, CPU Schedul ...
... 1. To impart fundamental understanding of the purpose, structure, functions of operating system. 2. To impart the key design issues of an operating system Syllabus Basic concepts of Operating System, its structure, Process management, inter-process communication, process synchronization, CPU Schedul ...
Linux Introduction - Personal Web Pages
... Even versions based on the licensed UNIX source code – May be so “Unix-like” they are certified to bear the “UNIX” trademark ...
... Even versions based on the licensed UNIX source code – May be so “Unix-like” they are certified to bear the “UNIX” trademark ...
Comp111 Slides
... UNIX is an Operating System (OS). An operating system is a control program that helps the user communicate with the computer hardware. The most popular operating systems: Windows -- from Microsoft. (Windows is the “Big Mac” of operating systems -- cheap and “billions served”.) UNIX was developed lon ...
... UNIX is an Operating System (OS). An operating system is a control program that helps the user communicate with the computer hardware. The most popular operating systems: Windows -- from Microsoft. (Windows is the “Big Mac” of operating systems -- cheap and “billions served”.) UNIX was developed lon ...
Fulltext PDF
... In a multiprogrammed system, the 'user' part of memory must be further sub-divided to accommodate multiple processes. The task of sub-dividing is carried out dynamically by the OS and is known as memory management. v Effective memory management is vital in a multiprogrammed system. If only a few pro ...
... In a multiprogrammed system, the 'user' part of memory must be further sub-divided to accommodate multiple processes. The task of sub-dividing is carried out dynamically by the OS and is known as memory management. v Effective memory management is vital in a multiprogrammed system. If only a few pro ...
Book cover slide
... that was independent of the hardware on which it needed to operate. Most versions of UNIX do not have a graphical user interface (GUI) but in recent years a lot of work has been done to make UNIX easier to use. ...
... that was independent of the hardware on which it needed to operate. Most versions of UNIX do not have a graphical user interface (GUI) but in recent years a lot of work has been done to make UNIX easier to use. ...
Operating Systems I
... A control program the manages all the resources of the computer on which it runs. ...
... A control program the manages all the resources of the computer on which it runs. ...
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY
... To make the students understand the basic operating system concepts such as processes, threads, scheduling, synchronization, deadlocks, memory management, file and I/O subsystems and protection. To get acquaintance with the class of abstractions afford by general purpose operating systems that a ...
... To make the students understand the basic operating system concepts such as processes, threads, scheduling, synchronization, deadlocks, memory management, file and I/O subsystems and protection. To get acquaintance with the class of abstractions afford by general purpose operating systems that a ...
Course Introduction - Washington University in St. Louis
... Linux is too large for us to cover everything! This course focuses on OS features that affect process semantics, e.g.: ...
... Linux is too large for us to cover everything! This course focuses on OS features that affect process semantics, e.g.: ...
Computer Review
... considered to be a program in execution. Associated with each process is its address space which is a list of memory locations which the process can read and write to. The address space contains the executable program, the program’s data and its stack. Also associated with each process is some set o ...
... considered to be a program in execution. Associated with each process is its address space which is a list of memory locations which the process can read and write to. The address space contains the executable program, the program’s data and its stack. Also associated with each process is some set o ...
Document
... file system that provides many improvements over the old FAT file system, such as better security, extensions, longer names, etc. FAT: File Allocation Table use to be the defacto standard for all operating systems and is still supported by practically all. FAT can make due as a relatively easy to su ...
... file system that provides many improvements over the old FAT file system, such as better security, extensions, longer names, etc. FAT: File Allocation Table use to be the defacto standard for all operating systems and is still supported by practically all. FAT can make due as a relatively easy to su ...
Final Report
... The file system simulator imitates a UNIX file system but requires that the user execute all the individual classes from the console and input all the information. The deadlock detection simulator requires input file that describe the processes and will not run if it can not find those individual fi ...
... The file system simulator imitates a UNIX file system but requires that the user execute all the individual classes from the console and input all the information. The deadlock detection simulator requires input file that describe the processes and will not run if it can not find those individual fi ...
Operating Systems
... Long term scheduler determines which programs are admitted to the system for processing. It controls the degree of multiprogramming. Once admitted, a job becomes a process. Medium term scheduling is part of the swapping function. This relates to processes that are in a blocked or suspended state. T ...
... Long term scheduler determines which programs are admitted to the system for processing. It controls the degree of multiprogramming. Once admitted, a job becomes a process. Medium term scheduling is part of the swapping function. This relates to processes that are in a blocked or suspended state. T ...
Interrupts and interrupt handlers - Washington University in St. Louis
... Hardware Interrupt Interface Register new handlers with request_irq(), three key attributes: – IRQ number – IRQ handler function – Whether the IRQ is shared ...
... Hardware Interrupt Interface Register new handlers with request_irq(), three key attributes: – IRQ number – IRQ handler function – Whether the IRQ is shared ...
PowerPoint 簡報
... subsystem is fully set up) is done here, as well as memory mapping of files, management of page caches, memory allocation, and swap out of pages in RAM (along with many other things). ...
... subsystem is fully set up) is done here, as well as memory mapping of files, management of page caches, memory allocation, and swap out of pages in RAM (along with many other things). ...
Operating Systems Questions
... 1. Write a definition for an operating system; 2. Describe the main features of an operating system for example: the cost, reliability, ease of use, type of interface and how they can be customised. You need to make sure you’re using different operating systems as examples; 3. Explain what an interr ...
... 1. Write a definition for an operating system; 2. Describe the main features of an operating system for example: the cost, reliability, ease of use, type of interface and how they can be customised. You need to make sure you’re using different operating systems as examples; 3. Explain what an interr ...
Midterm-2006-7-1-Solution
... b. (i), (ii), and (iii) c. (i), (ii), and (iv) d. (ii), (iii), and (iv) 5. A process switch may occur when i. A process terminates ii. a process moves to the I/O queue iii. A process makes a supervisor call iv. A process is interrupted due to a timer interrupt a. All of the above b. (i) and (ii) c. ...
... b. (i), (ii), and (iii) c. (i), (ii), and (iv) d. (ii), (iii), and (iv) 5. A process switch may occur when i. A process terminates ii. a process moves to the I/O queue iii. A process makes a supervisor call iv. A process is interrupted due to a timer interrupt a. All of the above b. (i) and (ii) c. ...