Slides
... • Use ps command to see the currently started processes in the system • Use ps aux to get more detailed information • See the manual page of the ps to get help about the ps: – Type: man ps • The man command gives info about a command, program, library function, or system call. • The /proc file syste ...
... • Use ps command to see the currently started processes in the system • Use ps aux to get more detailed information • See the manual page of the ps to get help about the ps: – Type: man ps • The man command gives info about a command, program, library function, or system call. • The /proc file syste ...
process
... Communicating Between Processes • Shared access to the same memory is dangerous – need to synchronize access ...
... Communicating Between Processes • Shared access to the same memory is dangerous – need to synchronize access ...
2.01
... among processes, users, and computer systems Allow users to send messages to one another’s screens, browse web pages, send electronic-mail messages, log in remotely, transfer files from one machine to another ...
... among processes, users, and computer systems Allow users to send messages to one another’s screens, browse web pages, send electronic-mail messages, log in remotely, transfer files from one machine to another ...
Processes
... send (P, message) – send a message to process P receive(Q, message) – receive a message from process Q Properties of communication link A link is associated with exactly one pair of ...
... send (P, message) – send a message to process P receive(Q, message) – receive a message from process Q Properties of communication link A link is associated with exactly one pair of ...
General-purpose Process Migration
... studied, prototyped and implemented—often with no real practical benefits. Traditionally, process migration mechanisms have been used to load balance processors in a distributed system and approaches for supporting them transparent to the application has required extensive kernel support. However, d ...
... studied, prototyped and implemented—often with no real practical benefits. Traditionally, process migration mechanisms have been used to load balance processors in a distributed system and approaches for supporting them transparent to the application has required extensive kernel support. However, d ...
What is an Operating System?
... and sometimes they tell airplanes to wait their turn. • Despite what we may sometimes think, their intent is not to prevent us from doing what we want by imposing complicated rules. • Rather, they are there to facilitate aircraft in flight. • On its own, the air traffic controller does not accomplis ...
... and sometimes they tell airplanes to wait their turn. • Despite what we may sometimes think, their intent is not to prevent us from doing what we want by imposing complicated rules. • Rather, they are there to facilitate aircraft in flight. • On its own, the air traffic controller does not accomplis ...
Abstract View of System Components
... system into RAM from boot drive operating system in memory takes control of computer ...
... system into RAM from boot drive operating system in memory takes control of computer ...
Efficient System-Enforced Deterministic Parallelism Yale University Abstract
... Conventional systems give threads direct, concurrent access to many forms of shared state, such as shared memory and file systems, yielding data races and heisenbugs if the threads fail to synchronize properly [25, 40, 43]. While replay debuggers [37, 39, 46, 56] and deterministic schedulers [8,10,2 ...
... Conventional systems give threads direct, concurrent access to many forms of shared state, such as shared memory and file systems, yielding data races and heisenbugs if the threads fail to synchronize properly [25, 40, 43]. While replay debuggers [37, 39, 46, 56] and deterministic schedulers [8,10,2 ...
Lecture 3
... E.g., The OS performs the task of dealing with complicated hardware resources and gives you a comprehensive and simple machine, ready to use. In this way, the OS provides a virtual machine. ...
... E.g., The OS performs the task of dealing with complicated hardware resources and gives you a comprehensive and simple machine, ready to use. In this way, the OS provides a virtual machine. ...
Operating Systems Cheat Sheet by makahoshi1
... A process is a program in execution, it s active, while a program is passive. The program becomes the process when it is running. The process needs resources to complete its ...
... A process is a program in execution, it s active, while a program is passive. The program becomes the process when it is running. The process needs resources to complete its ...
an introduction to solaris
... kernel supports an environment in which multiple programs can execute simultaneously. The primary functions of the kernel can be divided into two major categories: managing the hardware by allocating its resources among the programs running on it; and supplying a set of system services for those pro ...
... kernel supports an environment in which multiple programs can execute simultaneously. The primary functions of the kernel can be divided into two major categories: managing the hardware by allocating its resources among the programs running on it; and supplying a set of system services for those pro ...
OPERATING SYSTEM CONCEPTS
... Information is kept only where it is needed and is accessible only within a defined and restricted area, so any bugs affecting that data must be limited to a specific module or layer. ...
... Information is kept only where it is needed and is accessible only within a defined and restricted area, so any bugs affecting that data must be limited to a specific module or layer. ...
Abstract View of System Components
... Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems ...
... Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems ...
Operating System
... What is a backup utility? Copies selected files or entire hard disk onto another storage medium Most compress files during backup to require less storage space A restore program reverses the backup process and returns backed up files to their original form ...
... What is a backup utility? Copies selected files or entire hard disk onto another storage medium Most compress files during backup to require less storage space A restore program reverses the backup process and returns backed up files to their original form ...
Introduction to the Process
... – Processes provides memory protection – Threads more efficient than processes (later) ...
... – Processes provides memory protection – Threads more efficient than processes (later) ...
6-up pdf
... Because the cluster size is smaller than for the 16-bit FAT file system, the amount of internal fragmentation is reduced ...
... Because the cluster size is smaller than for the 16-bit FAT file system, the amount of internal fragmentation is reduced ...
OS Lab Manual
... Some of important tasks, which a typical modern operating system has to perform, are given below: ...
... Some of important tasks, which a typical modern operating system has to perform, are given below: ...
Libraries On-line: Making the Most of CD-ROM - Purdue e-Pubs
... Microsoft has done a better job of providing native CD ROM sharing facilities. NT shares CD-ROMs like any other type of drive, and for small scale systems with a limited number of drives and small number of users, is often sufficient. It also emulates MSCDEX, the DOS CD-ROM device driver required t ...
... Microsoft has done a better job of providing native CD ROM sharing facilities. NT shares CD-ROMs like any other type of drive, and for small scale systems with a limited number of drives and small number of users, is often sufficient. It also emulates MSCDEX, the DOS CD-ROM device driver required t ...
INF 5070 – Media Storage and Distribution Systems
... requests for all tasks with deadlines are periodic the deadline of a task is equal to the end on its period (starting of next) independent tasks (no precedence) run-time for each task is known and constant context switches can be ignored any non-periodic task has no deadline INF 5070 – m ...
... requests for all tasks with deadlines are periodic the deadline of a task is equal to the end on its period (starting of next) independent tasks (no precedence) run-time for each task is known and constant context switches can be ignored any non-periodic task has no deadline INF 5070 – m ...
Lecture 6: Synchronization
... section and there exist some processes that wish to enter their critical section, then the selection of the processes that will enter the critical section next cannot be postponed indefinitely 3.Bounded Waiting - A bound must exist on the number of times that other processes are allowed to enter the ...
... section and there exist some processes that wish to enter their critical section, then the selection of the processes that will enter the critical section next cannot be postponed indefinitely 3.Bounded Waiting - A bound must exist on the number of times that other processes are allowed to enter the ...
Operating-System Structures
... Chapter 2: Operating-System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure Operating System Debugging Operating System Generation System ...
... Chapter 2: Operating-System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure Operating System Debugging Operating System Generation System ...
No Slide Title
... The authentication package authenticates users whenever they attempt to access an object in the system ...
... The authentication package authenticates users whenever they attempt to access an object in the system ...
Pilot: An Operating System for a Personal Computer
... services within which higher level programs can more easily serve the user and/or communicate with other programs on other machines. Pilot omits certain functions that have been integrated into some other operating systems, such as character-string naming and user-command interpretation; such facili ...
... services within which higher level programs can more easily serve the user and/or communicate with other programs on other machines. Pilot omits certain functions that have been integrated into some other operating systems, such as character-string naming and user-command interpretation; such facili ...
What is an Operating System?
... Embedded Computing Most computers (auto engine controllers, microwaves) Very limited operating system features Little or no user interface, remote access ...
... Embedded Computing Most computers (auto engine controllers, microwaves) Very limited operating system features Little or no user interface, remote access ...