Explain c-scan ,look and c-look disk scheduling algorithm, Operating System

Assignment Help:

LOOK

o Like SCAN except stops moving inwards (or outwards) when no more requests in that direction exist.


C-SCAN (circular scan)

o Moves inwards servicing requests until it arrive at the innermost cylinder then jumps to the outside cylinder of the disk without servicing any requests.

o Replicate this over and over.

o Variant service needs from inside to outside and then skip back to the innermost cylinder.


C-LOOK

o Moves inwards servicing needs until there are no more requests in that direction and then it jumps to the outermost outstanding requests.

o Replicate this over and over.

o Variant service requirements from inside to outside after that skip back to the innermost request.


Related Discussions:- Explain c-scan ,look and c-look disk scheduling algorithm

Control the access of the three global variables, Give a brief introduction...

Give a brief introduction about the operation of your program and show that you understand the idea behind threads and mutual exclusion variable. Why do we need to use mutual exclu

Relationship among the capabilities of domain level j and i, Q. In a ring-...

Q. In a ring-protection system the level 0 has the greatest access to objects and level n (greater than zero) has fewer access rights. The access rights of a program at a partic

Define where a program generation activity aims, Define where a Program gen...

Define where a Program generation activity aims  Program generation activity aims at Automatic generation of program

Quick, why we say " OS is a resource allocator" and “OS is a control progr...

why we say " OS is a resource allocator" and “OS is a control program"?

Interrupt-driven i/o to manage a single serial port, Q. Why might a system ...

Q. Why might a system utilize interrupt-driven I/O to manage a single serial port however polling I/O to manage a front-end processor such as a terminal concentrator? A

What is the main function of the memory-management unit, What is the main f...

What is the main function of the memory-management unit? The runtime mapping from virtual to physical addresses is done by a hardware device known as a memory management unit (

What are the issues in designing a network-scalability, Scalability : ...

Scalability : Scalability is the competence of the system to adapt to increased service load. A scalable system will respond more gracefully to increased load than a non-sc

Embedded systems design or hardware design, You have been requested by your...

You have been requested by your Senior Engineer to design an Engine Control Unit (ECU) and prepare a report detailing your proposed solution. The client requires a design for a mic

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