Explain about spooling, Operating System

Assignment Help:

Q. Explain about Spooling?

  • Acronym for simultaneous peripheral operations on line. Spooling denotes to putting jobs in a buffer, a special area in memory or on a disk where a device can access them whenever it is ready.
  • Spooling is useful since device access data at different rates. Buffer offers a waiting station where data can rest while slower device catches up. Fig below displays the spooling.

8_Explain about Spooling.png

  • Computer can perform I/O in parallel with computation, it becomes possible to have the computer read a deck of cards to adrum, tape or disk and to write out to tape printer while it was computing. This process is known as spooling.
  • The most common spooling application is print spooling. In print spooling documents are loaded in a buffer and then printer pulls them off the buffer at its own rate.
  • Spooling is used for processing data at remote sites also. CPU transmits the data through communications path to a remote printer. Spooling overlaps I/O of one job with computation of other jobs.
  • One difficulty with simple batch systems is that computer still requires to read the decks of cards before it can begin to execute the job. This means that CPU is idle at the time of these relatively slow operations.
  • Spooling batch systems were the first and are simplest of multiprogramming systems

Advantage of Spooling

1.  Spooling operation uses a disk like a very large buffer.

2. Spooling is however capable of overlapping I/O operation for one job with processor operations for another job.


Related Discussions:- Explain about spooling

Explain worst fit algorithm, Worst Fit Algorithm Here we obtain the la...

Worst Fit Algorithm Here we obtain the largest space available for the smallest. Therefore after that process entered there will be much more space remaining. In this space we

Explain about threading issues, Explain about threading issues? The for...

Explain about threading issues? The fork and exec system calls In a multithreaded program of few UNIX systems have chosen to have two versions of fork, one that duplicates e

How is it different from the unbounded buffer algori, How is it different f...

How is it different from the unbounded buffer algorithm ? Explain.

What is directory, What is Directory? The device directory or simply ca...

What is Directory? The device directory or simply called as directory records information-such as name, location, size, and type  for all files on that certain partition. The d

Operating systems concepts, The code should be nicely formatted with plenty...

The code should be nicely formatted with plenty of comments. It should be easy to read, properly The summary section should include three parts: (1) Record the running t

Three conditions that solution for critical section problem, What are three...

What are three conditions that a solution for the critical section problem must satisfy? The three conditions are as following:- a)      Mutual exclusion :- if a process is

What do you understand by active directory domain, Question: a) What ...

Question: a) What do you understand by Active directory domain in Windows Server 2008? Support your answer with a diagram. b) Distinguish between active directory trees

Explain two level directory, Two Level Directory This kind of structure...

Two Level Directory This kind of structure overcomes the problems of assigning unique names to the files. Thus there need not be any confusion among users. In this kind of s

What is an i/o subsystem, What is an I/O subsystem? The control of devi...

What is an I/O subsystem? The control of devices connected to the computer is a main issue while designing operating systems. Because I/O deices differ widely in their function

Recovery regarding the file system in windows 2000, Write short note on rec...

Write short note on recovery regarding the file system in Windows 2000. In many file systems a power breakdown at the wrong time can damage the file system data structures so s

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