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 types of file allocation- linked list allocation, Linked list alloc...

Linked list allocation: At this time the blocks are stored using linked lists. The block size require not be the same. Thus internal fragmentation is avoided. Consider

Hj, scheduling

scheduling

Explain bounded buffer and unbounded buffer, Explain bounded buffer and unb...

Explain bounded buffer and unbounded buffer. Here in a producer-consumer problem the producer process produces information that is consumed by a consumer process. At this time

Paging, what is the use of valid invalid bits in paging

what is the use of valid invalid bits in paging

Thread, Explain thread in details

Explain thread in details

Making the transition to client - server programming, Making the Transition...

Making the Transition to Client - Server Programming Making the transition to client - server programming is a significant effort. Client - server applications must be designed

Explain the advantages and drawback of multiple processes, Explain the Adva...

Explain the Advantages and Drawback of Multiple Processes Application architected to take advantage of multiple processes will certainly see performance gains. Functions and Fe

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