Explain the different sub-functions of process scheduling, Computer Engineering

Assignment Help:

Explain the different sub-functions of Process Scheduling.

Process scheduling contains the subsequent sub-functions:

1. Scheduling: Chooses the process to be executed next on the CPU. The scheduling function uses information from the Process Control Block's and selects a process based upon the scheduling policy in force.

2. Dispatching: Sets up execution of the chosen process on the CPU. Such function involves setting up the execution environment of the process that are selected, and loading information from the PSR and registers fields of the selected into the CPU.

3. Context saves: Saves the status of a running process while its execution is to be suspended. This function executes housekeeping whenever a process releases the center processing unit or is pre-empted.

The demonstrated diagram illustrates the use of scheduling sub functions:

Occurrences of an event invoke the context save function. The kernel instantly processes the event which has occurred. The scheduling function is instantly invoked to select a process for execution upon the CPU. The dispatching function arranges execution of the selected function on the center processing unit.

749_necessary conditions for Deadlock.png


Related Discussions:- Explain the different sub-functions of process scheduling

What are two reasons for using layered protocol, What are two reasons for u...

What are two reasons for using layered protocol? Layered protocol implies protocols used into each layer are the layer's own business that is they don't influence protocol of a

Concepts of an address and data, The heart of a computer is often one integ...

The heart of a computer is often one integrated circuit; one typical circuit is a 68Hc11 Microprocessor. Let us consider a typical 68Hc11 hardware design.           The mic

Define protocol, Define Protocol. It is a set of rules that are followe...

Define Protocol. It is a set of rules that are followed by interconnecting computers and terminals to make sure the orderly transfer of information

Two ways of converting a two input nand gate to an inverter, 1)      Short ...

1)      Short both I/Ps of NAND gate & use the gate as an inverter. 2)      Connect any one of the two I/Ps to VCC & use the remaining I/P & use the gate as an inverter.

Determine the address when network address prefixed by 1000, A network addr...

A network address prefixed by 1000 is? A network address prefixed through 1000 is Class B address.

What is stack, Stack is a portion of RAM used for saving the content of Pro...

Stack is a portion of RAM used for saving the content of Program Counter and common purpose registers. LIFO stacks, also called as "push down" stacks, are the conceptually easi

Operating system., what is the minimum number of page faults for an optimal...

what is the minimum number of page faults for an optimal page replacement strategy?

The job allocation register, Signify this problem by means of: i.    An Ent...

Signify this problem by means of: i.    An Entity Relationship model; ii.    Relational tables. Pete's Programmers is a firm which supplies part time staff on contract to organisat

Overall computing time, Clustering has been existing since the 1980s when i...

Clustering has been existing since the 1980s when it was used in DEC's VMS systems. IBM's SYSLEX is a cluster approach for a mainframe system. Sun Microsystems, Microsoft, and othe

#, advantages of dda line algoritm

advantages of dda line algoritm

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