Write a short note on disk scheduling, Operating System

Assignment Help:

Write a short note on disk scheduling

 

One of the responsibities of operating system O/S is to use the hardware efficiently. Whenever a process requires I/O to or from the disc it issues a system call to the operating system. The request state severer pieces of information:

  • Whether this operation is input or output
  • What the disk address for the transfer is
  • What the memory address for the transfer is
  • What the number of bytes to be transferred is

                 If the disk controller and drive are available the request can be serviced immediately. If the controller or drive is busy any new request for service will be placed on the queue of pending request for that drive. For a multiprogramming system with several processes the disk queue may often have several pending requests. Therefore when request is accomplish the operating system chooses which pending request to service next.

 


Related Discussions:- Write a short note on disk scheduling

Explain the various database applications used in linux, Question 1 Descri...

Question 1 Describe about the shells of Linux operating system Question 2 Describe briefly about GNOME desktop Question 3 Write note on the following- Encryp

How can the index blocks be implemented, How can the index blocks be implem...

How can the index blocks be implemented in the indexed allocation scheme? The index block can be implemented as follows a. Multilevel scheme b. Linked scheme c. Combin

What is multiprogramming, What is Multiprogramming? Multiprogramming is...

What is Multiprogramming? Multiprogramming is the capability of am operating system to support multiple applications running concurrently. Multiprogramming simply means that an

Virtual memory, How a virtual memory can be implemented? What are the benef...

How a virtual memory can be implemented? What are the benefits of using virtual memory?

Briefly explain about file system implementation, Briefly explain about fil...

Briefly explain about file system implementation? Several on-disk and in-memory structures are used to execute a file system. On disk, the file system may have information abou

Advantages and disadvantages of thread, OPERATING SYSTEM 1. Describe th...

OPERATING SYSTEM 1. Describe the term operating system. Write down the functions of operating system. 2. Explain Thread? Write down the advantages and disadvantages of threa

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

Requirements for solution of critical section problem, What are the require...

What are the requirements for solution of critical section problems? Mutual exclusion : If process p is implementing in its critical section then no other processes can be exe

Distinguish among pcs and scs scheduling, Q. Distinguish among PCS and SCS ...

Q. Distinguish among PCS and SCS scheduling. Answer: PCS scheduling is completed local to the process. It is how a thread library schedules threads onto available LWPs. SCS sch

Explain about deadlock detection, Explain about deadlock detection? In ...

Explain about deadlock detection? In deadlock situation, the system must provide An algorithm that verifies the state of the system to verify whether a deadlock has occu

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