Explain non-pre-emptive algorithms, Computer Engineering

Assignment Help:

Explain non-pre-emptive algorithms?  

Non preemptive algorithms: In this algorithm a job is provided to CPU for execution as long as the job is non-completed the CPU cannot be provided to other processes.

There are three kinds of non preemptive algorithms.

(i) First-come-first-serve (FCFS): This is simplest CPU scheduling algorithm. Along with this scheme, the process which requests the CPU at first is provided to the CPU at first. The implementation of First Come First Serve is easily managed through with a FIFO queue.

(ii) Shortest-job-first (SJF): It is also termed as SPN (shortest process next). In this algorithm the burst times of all the jobs that are waiting in the queue are compared. The job that is containing the least CPU execution time will be provided to the processor at first. In such turnaround time and waiting times are least. It also suffers along with starvation. Indefinite waiting time is termed as starvation. This is complex than FCFS.

(iii) Priority: In this method every job is related with CPU execution time, arrival time and the priority. Here the job that is containing the higher priority will be specified to the execution at first. It also suffers with starvation. And through using aging technique starvation effect may be decreased.


Related Discussions:- Explain non-pre-emptive algorithms

Dpsd -asynchronous circuits, an asyncronous sequential circuit is described...

an asyncronous sequential circuit is described by the the exitatio function and the output function y=x1x2''+(x1=x2'')y output function z=y a)draw the logic diagram of the circuit.

What are the different between hypertext hypermedia, What are the different...

What are the different between hypertext hypermedia? Hypertext is fundamentally the same like regular text; this can be stored, read or searched and edited along with a signifi

Explain the recording mode for web vuser script, We use VuGen to make a Vus...

We use VuGen to make a Vuser script by recording a user performing typical business processes on a customer application. VuGen makes the script by recording the activity among the

Sets and bags, Task: Sets and bags In mathematics, the notion of multis...

Task: Sets and bags In mathematics, the notion of multiset (or bag) is a generalisation of the notion of set. A bag is a special kind of container in which the items may be

How does the dialog handle user requests, How does the Dialog handle user r...

How does the Dialog handle user requests? when an action is performed ,the system triggers the PROCESS AFTER INPUT event. The data passed contains field screen data data enter

Draw the circuit of A/D converter using a V/F converter, Draw the schematic...

Draw the schematic circuit of an Analog to Digital converter using Voltage-to Frequency conversion and explain its principle of operation. Draw its relevant Waveforms. Ans:

What is a priority interrupt, What is a Priority Interrupt? A priority ...

What is a Priority Interrupt? A priority interrupt is an interrupt that establishes a priority over the various sources to determine which condition is to be serviced first whe

Permanently resident pages - main memory, Permanently resident pages: ...

Permanently resident pages: Every virtual memory systems have memory areas that are "pinned down", for example cannot be swapped out to secondary storage, for instance:

Compare hypertext versus hypermedia, Compare hypertext versus hypermedia.  ...

Compare hypertext versus hypermedia.  Hypertext is basically similar as regular text - it can be stored, read, searched, or edited - with a significant except ion: hyper text h

Memory management unit, A computer system with 16K of memory, a Memory Mana...

A computer system with 16K of memory, a Memory Management Unit with a page size of 2000, and the following page translation table :      Logical Address    Physical Start 0000

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