A page shall be paged out when page is not required in the memory pages. Page...
A page shall be paged out when page is not required in the
memory pages. Page replacement algorithms are used to perform the
page out activity. Calculate the page faults for reference string 1
3 3 5 1 1 8 3 8 9 9 9 with respect to frame size of 3 using the
algorithms as follows. Show your workings in details.
a) Belady’s anomaly algorithm
b) Optimal algorithm
answer should be in essay format (including resolution steps) with
approximately 600, i.e. 200 words for each method, or more
words.
Homework Answers
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A page shall be paged out when page is not required in the
memory pages. Page...
Implement the frame replacement algorithm for virtual memory Assume a computer system have 10 memory frames available inside the physical memory and is required to execute a process containing 20 pa...
Implement the frame replacement algorithm for virtual memory Assume a computer system have 10 memory frames available inside the physical memory and is required to execute a process containing 20 pages. Assume a process P has been executed in the system and produced a sequence of 40 page demands as follows: Page demands trace of process P Demand 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 cont. Page...
A system has 5 frames. For each of the algorithms below give the number of pages...
A system has 5 frames. For each of the algorithms below give the number of pages faults for the reference string 43214573654632714. Show all your work. (a) FIFO (b) Optimal Algorithm (c) LRU (d) Working set Algorithm. Assume that there are 3 page reference between clock ticks. Also in case of a tie the page with the lowest number is paged out.
Consider the following page reference string for a three-frame memory: 6 3 1 5 3 4...
Consider the following page reference string for a three-frame memory: 6 3 1 5 3 4 3 2 5 4 3 4 5 1 5 3 1 6 3 1 Apply LRU, Clock and FIFO algorithms What will be the number of page faults for each replacement algorithm note that page faults at the beginning are counted?
Write a program that implements the FIFO, Optimal, MFU, and LRU page-replacement algorithms. Given a page-reference...
Write a program that implements the FIFO, Optimal, MFU, and LRU page-replacement algorithms. Given a page-reference string, where page numbers range from 0 to 9, apply the page-reference string to each algorithm, and output the number of page faults incurred by each algorithm. Write your code so that the number of page frames in the page table can vary from 1 to 10. 1.0 Functional Requirements 1.1: Your program shall be run with the following: ./a.out Example: ./a.out datafile.txt 1.2:...
Q1. Consider the following reference string and the frame size is 3 (3 pages can be...
Q1. Consider the following reference string and the frame size is 3 (3 pages can be in main memory at a time) 10 2 3 4 1 2 3 0 3 2 1 4 1 1 0 3 4 1 2 Apply the following page replacement algorithms and find the page faults: a. FIFO b. Optimal LRU
Answer the following questions based on the Memory Management tasks of an Operating System. 5 Consider...
Answer the following questions based on the Memory Management tasks of an Operating System. 5 Consider the following sequence of page references: 5, 6, 7, 6, 8, 7, 9, 5, 9, 6, 8, 9 Assuming that all frames are initially empty, indicate the contents of memory after each reference, and how many page faults are found for each of the following page replacement algorithms: First In First Out (FIFO): [2 .5 M] Reference String 5 6 7 6 8 7...
Name Olbinna COSC414/514 Quiz3 (1) Suppose a computer has 4 physical pages, and a process referen...
Name Olbinna COSC414/514 Quiz3 (1) Suppose a computer has 4 physical pages, and a process references its virtual pages (page o through page 7) in the following order: 021354637473355311172341 Also suppose the first four pages have been loaded in the physical memory as the following figure: Frame 0 Frame 1 Frame 2 Frame 3 a. Suppose the kernel uses First-In-First-Out (FIFO) page replacement algorithm. How many page faults would the process have? Which page references are page faults? b. Suppose...
Question 7 30 pts Consider the following page reference string: {1,2,3,4,1,5,6,2,1,2,3,7,6,3} Assume that the system has...
Question 7 30 pts Consider the following page reference string: {1,2,3,4,1,5,6,2,1,2,3,7,6,3} Assume that the system has 4 page frames allocated to these 7 pages. Follow the page placement and replacement using the following three replacement algorithms: • LRU replacement • FIFO replacement • Optimal replacement How many page faults will occur for these three algorithms? Assume that all frames are initially empty, so your first unique pages will all cost one fault each USE ENCLOSED TABLES! Show all calculations in...
Given the following page reference string, count the number of page faults for a memory capacity...
Given the following page reference string, count the number of page faults for a memory capacity of 4 frames using the CLOCK page replacement algorithm. Reference string: 0, 1, 2, 3, 0, 1, 4, 0, 1, 2, 3, 4, 5, 6, 3, 2, 1, 0. Show all work.
This is JAVA programing problem. Please give me all necessary screenshot and comments. (I use Ecl...
This is JAVA programing problem. Please give me all necessary screenshot and comments. (I use Eclipse) Thanks Write a program that implements the FIFO, LRU, and Optimal page replacement algorithms presented in chapter 8 of your text. First generate a random page-reference string (this should be 20 entries long) where page numbers range from 0 to 9. Apply the random page-reference string to each algorithm, and record the number of page faults incurred by each algorithm. Implement the replacement algorithms...
Q1. Consider the following reference string and the frame size is 3 (3 pages can be in main memory at a time) 10 2 3 4 1 2 3 0 3 2 1 4 1 1 0 3 4 1 2 Apply the following page replacement algorithms and find the page faults: a. FIFO b. Optimal LRU
Name Olbinna COSC414/514 Quiz3 (1) Suppose a computer has 4 physical pages, and a process references its virtual pages (page o through page 7) in the following order: 021354637473355311172341 Also suppose the first four pages have been loaded in the physical memory as the following figure: Frame 0 Frame 1 Frame 2 Frame 3 a. Suppose the kernel uses First-In-First-Out (FIFO) page replacement algorithm. How many page faults would the process have? Which page references are page faults? b. Suppose...
Question 7 30 pts Consider the following page reference string: {1,2,3,4,1,5,6,2,1,2,3,7,6,3} Assume that the system has 4 page frames allocated to these 7 pages. Follow the page placement and replacement using the following three replacement algorithms: • LRU replacement • FIFO replacement • Optimal replacement How many page faults will occur for these three algorithms? Assume that all frames are initially empty, so your first unique pages will all cost one fault each USE ENCLOSED TABLES! Show all calculations in...
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