Array-initialization loops using lru replacement algorithm, Operating System

Assignment Help:

Q. Consider the two-dimensional array A:

int A[][] = new int[100][100];

Whereas A [0][0] is at location 200 in a paged memory system with pages of size 200. A little process is in page 0 (locations 0 to 199) for manipulating the matrix thus every instruction fetch will be from page 0.

For three page frames how various page faults are generated by the following array-initialization loops using LRU replacement and assuming page frame 1 has the process in it and the other two are initially empty?

a.

for (int j = 0; j < 100; j++)

for (int i = 0; i < 100; i++)

A[i][j] = 0;

b.

for (int i = 0; i < 100; i++)

for (int j = 0; j < 100; j++)

A[i][j] = 0;

Answer:

a. 50

b. 5,000


Related Discussions:- Array-initialization loops using lru replacement algorithm

Illustrate the operating system components, Q. Illustrate the Operating Sys...

Q. Illustrate the Operating System Components? Modern operating systems share the goal of supporting system components. System components are: 1.  Process Management 2.

What is turnaround time, What is turnaround time? Turnaround time is th...

What is turnaround time? Turnaround time is the interval from the time of submission to the time of completion of a process. It is the sum of the periods exhausted waiting to g

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

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

Find the number of drives in the jukebox, Q. In a disk jukebox what would b...

Q. In a disk jukebox what would be the result of having more open files than the number of drives in the jukebox? Answer: Two bad results could result. One likelihood is star

System bus and device speeds as the cpu speed increases, Q. Why is it impor...

Q. Why is it important to scale up system bus and device speeds as the CPU speed increases? Answer: Consider a system which carries out 50% I/O and 50% computes. Doubling-up

Explain file control list and user control list, Q. Researchers have recom...

Q. Researchers have recommended that instead of having an access list associated with each file (specifying which users can access the file and how) we should have a user control

Definition of operating system, Q. Definition of Operating System? Defi...

Q. Definition of Operating System? Definition of Operating System: • An Operating system is a program which controls execution of application programs and acts as an interfa

What is meant by context switch, What is meant by context switch? Switc...

What is meant by context switch? Switching the CPU to another process needs saving the state of the old process and loading the saved state for the latest process. This task is

Process, what common event leads to the creation of a process?

what common event leads to the creation of a process?

define system calls, When a computer is started on, the program that execu...

When a computer is started on, the program that executed first is named the ''operating system.'' It controls pretty much all applications in the computer. This adds who logs in, h

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