Optimal replacement policy, Operating System

Assignment Help:

The optimal replacement policy, called OPT, is to evict the page which will be accessed farthest into the future. Since we can't predict the future precisely, we can't implement OPT in any real system. We can, however, run OPT on a saved trace of memory accesses, to measure how our real algorithm compares with OPT for a given trace.


Related Discussions:- Optimal replacement policy

Benefits of dynamic linkage of libraries, Q. What are three benefits of dyn...

Q. What are three benefits of dynamic (shared) linkage of libraries compared to static linkage? What are two situations where static linkage is preferable? Answer: The

What is the main difficulty real-time environment, What is the main difficu...

What is the main difficulty that a programmer must overcome in writing an operating system for a real-time environment? The main difficulty is keeping the operating system with

Write a short note on disk structure, Write a short note on disk structure ...

Write a short note on disk structure Modern disk drives are initiate as large one dimensional array of logical blocks where the logical block is the smallest unit of transfer.

Explain about disk scheduling with neat diagram, Explain about disk schedul...

Explain about disk scheduling with neat diagram? FCFS Scheduling SCAN scheduling C-SCAN scheduling SSTF scheduling LOOK Scheduling

What are tree-structured directories, What are Tree-structured directories ...

What are Tree-structured directories We can generalize the directory structure to a tree of arbitrary height. This permits the user to create their own sub directories and to c

Explain a boot control block, Explain a boot control block A boot contr...

Explain a boot control block A boot control block can have the information required by the system to boot an operating from that partition. If the disk does not have an operati

Ipc, explain in detail about ipc in linux

explain in detail about ipc in linux

Advantages and disadvantages of using circuit switching, Q. What are the ad...

Q. What are the advantages as well as disadvantages of using circuit switching? For what types of applications is circuit switching a viable strategy? Answer: Circuit

Explain interrupts, Interrupts The hardware mechanism that enables a de...

Interrupts The hardware mechanism that enables a device to inform the CPU is called an interrupt. The basic interrupt mechanism works as follows. The CPU hardware has a wire kn

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