Explain the features of major scheduling algorithms, Computer Engineering

Assignment Help:

Explain the Features of Major scheduling algorithms.

The Features of Major scheduling algorithms is given below:

  1. FCFS - i.e. First come first served scheduling
  2. Shortest Job First scheduling (SJF)
  3. Priority scheduling
  4. Round robin scheduling

First come first served scheduling-

  • Process which request the CPU first is assigned CPU first
  • Managed through FIFO queue.
  • Average waiting time is usually long
  • Non-pre-emptive
  • For time-sharing systems, troublesome

Shortest job first (SJF)

  • The process that has the smallest CPU burst time gets first
  • This increases the waiting time of long processes.
  • Problem - difficult to predict the length of subsequent CPU request
  • May be non-pre-emptive or be preemptive

Priority

  • Highest priority process finds CPU allocation first
  • The larger the CPU burst then lowers the priority
  • Priority can be explained internally or externally
  • Can be non-pre-emptive or preemptive
  • Problem-starvation i.e. blocking of process
  • Solution-aging - raises the priority

Round robin

  • Time quantum from 10 100 millisecond is described
  • Processes are seem in circular queue
  • CPU allocation is divided between processes accordingly
  • Performance depends heavily upon time quantum
  • Pre-emptive

Related Discussions:- Explain the features of major scheduling algorithms

Numbers of students must be integer, A school district has I neighbourhoods...

A school district has I neighbourhoods, J schools and G grades at every school. Every school j has a capacity of C jg for grade g. In every neighbourhood i, the student population

Types of e-commerce , Types E-commerce generally based on advertising, sell...

Types E-commerce generally based on advertising, selling, marketing and buying, but due to the differences in needs, e-commerce has been classified according to the parties of the

display the contents of the file grade, a) Input names of students from th...

a) Input names of students from the user, terminated by "ZZZ", 0, 0, 0 and create a data file grades with records of the following form: Student (string), test1 (integer), test2 (i

Define user mode and kernel mode, Define user mode and Kernel mode Kern...

Define user mode and Kernel mode Kernel is a private mode in that no limitation is imposed on the kernel of system. Kernel may be use all the information of the processor, oper

What are the steps in multiplication algorithm, What are the steps in multi...

What are the steps in multiplication algorithm?   Check for zeros.   Multiply mantissas   Add the exponents.   Normalize the product.

Affective functioning - integrated test result, Mr. X's MMPI suggests that ...

Mr. X's MMPI suggests that he either suppresses anger and hostility or has a naturally low level of anger and hostility (O-H=58, ANG=36, TPA=41, AGGR=36). His responses on the PAS

Difference between external and global variables, Global variables are acce...

Global variables are accessible only to the batch program while external variables can be referenced from any batch program residing in the similar system library.

Explain the concept of process, The Concept of Process Unofficially a p...

The Concept of Process Unofficially a process is a program in execution subsequent to the program has been loaded in the main memory. Though a process is more than just a progr

Problems.., what are the different types of tablets?

what are the different types of tablets?

How can you show only selected records with a form, How can you show only s...

How can you show only selected records with a form? There are dissimilar ways in which you can limit the records that you will see with a form, you can: Open a form and app

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