Write a short note about context switch, Operating System

Assignment Help:

Write a short note about context switch.

Switching the CPU to another process needs saving the state of the old process and loading the saved state for the new process. This task is recognized as a context switch. The context of a process is symbolize in the PCB of a process it includes the value of the process state, CPU registers, and memory-management information. When a context switch takes place, the kernel accumulates the context of the old process in its PCB and loads the saved context of the new process scheduled to run. Context-switch time is pure overhead for the reason that to machine depending on the memory speed the number of registers that have to be copied, and the subsistence of special instructions. Usual speed range from 1 to 1000 microseconds. Context-switch times are extremely dependent on hardware support.

 

 


Related Discussions:- Write a short note about context switch

What is a file path name, What is a file path name? A list of the subdi...

What is a file path name? A list of the subdirectories, directories, and files we must traverse to reach a file from the root directory.

What is the design issues involved in segmentation?, SEGMENTATION HARDWARE ...

SEGMENTATION HARDWARE An execution to map two-dimensional user-defined addresses into one-dimensional physical addresses. This mapping is affected by means of segment table. Ev

What is degree of multiprogramming?, What is degree of multiprogramming ? ...

What is degree of multiprogramming ? Degree of multiprogramming signifies the number of processes in memory. If the degree of Multiprogramming is steady after that the average

File system, what are disadvantages of using single directory

what are disadvantages of using single directory

Producer-consumer, The general idea of a producer-consumer architecture is ...

The general idea of a producer-consumer architecture is related to building a pipeline of threads, similar to the web spider from Project 2. Each step of the processing will now be

Explain the concept of reentrancy, Explain the concept of Reentrancy? I...

Explain the concept of Reentrancy? It is a useful, memory-saving method for multiprogrammed timesharing systems. A Reentrant Procedure is one in which many users can share a si

Linux operation system, wat are the commands used for creating the file hie...

wat are the commands used for creating the file hierarchy

Explain secondary-storage management, What are the three main activities of...

What are the three main activities of an operating system in regard to secondary-storage management? a) Free-space management. b) Storage allocation. c) Disk scheduling.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd