What is an Operating System?
... Process needs resources to accomplish its task CPU, memory, I/O, files (received upon creation and along execution) Initialization data (e.g., a process for presenting the status of a file) Process termination requires reclaim of any reusable resources ...
... Process needs resources to accomplish its task CPU, memory, I/O, files (received upon creation and along execution) Initialization data (e.g., a process for presenting the status of a file) Process termination requires reclaim of any reusable resources ...
ch02_computer_struct
... that an incorrect program or poorly behaving human cannot cause other programs to execute incorrectly OS must provide hardware support to differentiate between at ...
... that an incorrect program or poorly behaving human cannot cause other programs to execute incorrectly OS must provide hardware support to differentiate between at ...
ch1_OS
... What is an Operating System? Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems ...
... What is an Operating System? Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems ...
Red Hat Linux System Administration I – Concepts
... to the Red Hat SA1 course, RHEL 6.3 and prepares students for the RHCE exam. Prerequisites Basic computer skills are required. Some experience using any PC operating system, including Windows or Mac, is needed. Audience Linux administrators Duration 4 days Course Content Basic Linux Overview ...
... to the Red Hat SA1 course, RHEL 6.3 and prepares students for the RHCE exam. Prerequisites Basic computer skills are required. Some experience using any PC operating system, including Windows or Mac, is needed. Audience Linux administrators Duration 4 days Course Content Basic Linux Overview ...
Chapter 1: Introduction
... Group identifier (group ID) allows set of users to be defined and controls managed, then also associated with each process, file ...
... Group identifier (group ID) allows set of users to be defined and controls managed, then also associated with each process, file ...
ppt
... System call – request to the operating system to allow user to wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to include i ...
... System call – request to the operating system to allow user to wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to include i ...
ch1
... System call – request to the operating system to allow user to wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to include i ...
... System call – request to the operating system to allow user to wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to include i ...
Processes and CPU Scheduling
... existence of special instructions (such as a single instruction to load or store all registers). Context-switch times are highly dependent on hardware support. For instance, some processors provide multiple sets of registers. A context switch simply includes changing the pointer to the current regis ...
... existence of special instructions (such as a single instruction to load or store all registers). Context-switch times are highly dependent on hardware support. For instance, some processors provide multiple sets of registers. A context switch simply includes changing the pointer to the current regis ...
IOS103_IOS102_III. Processes and CPU Scheduling_Wk3
... existence of special instructions (such as a single instruction to load or store all registers). Context-switch times are highly dependent on hardware support. For instance, some processors provide multiple sets of registers. A context switch simply includes changing the pointer to the current regis ...
... existence of special instructions (such as a single instruction to load or store all registers). Context-switch times are highly dependent on hardware support. For instance, some processors provide multiple sets of registers. A context switch simply includes changing the pointer to the current regis ...
2.01
... System call – request to the operating system to allow user to wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to include i ...
... System call – request to the operating system to allow user to wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to include i ...
Dr. Abeer Mahmoud
... It is a logical extension of multiprogramming. In time-sharing systems, the CPU executes multiple jobs by switching among them, but the switches occur so frequently that the users can interact with each program while it is running. Time sharing requires an interactive computer system The response ti ...
... It is a logical extension of multiprogramming. In time-sharing systems, the CPU executes multiple jobs by switching among them, but the switches occur so frequently that the users can interact with each program while it is running. Time sharing requires an interactive computer system The response ti ...
Design of Hybrid Kernel and the Performance Improvement of
... task which is running to another ready for running one [4]. In preemptive scheduling systems, there are a lot of events that can cause context switches, such as external interrupt, or releasing of resource which high priority tasks wait for. The linkages of tasks in an operating system are achieved ...
... task which is running to another ready for running one [4]. In preemptive scheduling systems, there are a lot of events that can cause context switches, such as external interrupt, or releasing of resource which high priority tasks wait for. The linkages of tasks in an operating system are achieved ...
system programs
... terms, device drivers or file systems that could not be distributed under the GPL. Kernel modules allow a Linux system to be set up with a standard, minimal kernel, without any extra device drivers built in. Linux can then allow additional modules to be loaded and integrated with the base system - t ...
... terms, device drivers or file systems that could not be distributed under the GPL. Kernel modules allow a Linux system to be set up with a standard, minimal kernel, without any extra device drivers built in. Linux can then allow additional modules to be loaded and integrated with the base system - t ...
CS 519 -- Operating Systems -
... interrupt checking check whether current thread has run “long enough” if yes, post asynchronous software trap (AST) enable interrupt checking exit interrupt handler enter “return-to-user” code check whether AST was posted if not, restore user thread state and return to executing user t ...
... interrupt checking check whether current thread has run “long enough” if yes, post asynchronous software trap (AST) enable interrupt checking exit interrupt handler enter “return-to-user” code check whether AST was posted if not, restore user thread state and return to executing user t ...
Chapter 4
... • One or more threads may reside in the same process. • When a parent process forks a child process, the child process has its own address spaced its own copy of all data of the parent process. • The child has its own copies of global variables and resources such as descriptors to open files; for ex ...
... • One or more threads may reside in the same process. • When a parent process forks a child process, the child process has its own address spaced its own copy of all data of the parent process. • The child has its own copies of global variables and resources such as descriptors to open files; for ex ...
CS 3100
... decrements both when the process executes and when the system is executing on behalf of the process. Coupled with ITIMER_VIR TUAL, this timer is usually used to profile the time spent by the application in user and kernel space. SIGPROF is delivered upon expiration. ...
... decrements both when the process executes and when the system is executing on behalf of the process. Coupled with ITIMER_VIR TUAL, this timer is usually used to profile the time spent by the application in user and kernel space. SIGPROF is delivered upon expiration. ...
Mohammad Husain
... programs either cannot be run automatically on the Linux machine, or simply are not capable of being executed on a 386 architecture Windows is often known for a large amount of loop ...
... programs either cannot be run automatically on the Linux machine, or simply are not capable of being executed on a 386 architecture Windows is often known for a large amount of loop ...
2-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 System Boot ...
... 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 System Boot ...
Threads
... (grandma’s modem connection) – Takes server a loooong time to feed the response to grandma – While it’s doing that it can’t service any more requests ...
... (grandma’s modem connection) – Takes server a loooong time to feed the response to grandma – While it’s doing that it can’t service any more requests ...
Chapter 4
... • Job Scheduler (JS) or Process Scheduler (PS) incurs state transition responsibility (cont'd.) – WAITING to READY • PS initiates by signal from I/O device manager • Signal indicates I/O request satisfied; job continues ...
... • Job Scheduler (JS) or Process Scheduler (PS) incurs state transition responsibility (cont'd.) – WAITING to READY • PS initiates by signal from I/O device manager • Signal indicates I/O request satisfied; job continues ...
Chapter 3: Operating-System Structures Common System
... ✦ Provision of mechanisms for: ✔ process synchronization ✔ process communication ...
... ✦ Provision of mechanisms for: ✔ process synchronization ✔ process communication ...
Module 3: Operating
... Provision of mechanisms for: process synchronization process communication ...
... Provision of mechanisms for: process synchronization process communication ...