Given that main memory is composed of four page frames for public use and that program...
- Given that main memory is composed of four page frames for public use and that program requests pages in the following order:
a, b, a, b, f, d, f ,c, g, f, a, b, d, e, k, m
- Using FIFO removal algorithm, perform a page trace analysis and indicate page faults with asterix(*). Then calculate failure rate.
- Using LRU removal algorithm, perform a page trace analysis and indicate page faults with asterix(*). Then calculate failure rate.
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Given that main memory is composed of four page frames for
public use and that program...
Given that main memory is composed of three page frames for public use and that a...
Given that main memory is composed of three page frames for public use and that a program requests pages in the following order: A, B, C, D, A, B, E, A, B, C, D, E, B, A, B Using the FIFO page removal algorithm, perform a page trace analysis indicating page faults with asterisks (*). Then compute the failure and success ratios Using the LRU page removal algorithm, perform a page trace analysis and compute the failure and success ratios....
1. Given that main memory is composed of only three page frames for public use and...
1. Given that main memory is composed of only three page frames for public use and that a seven-page program (with pages a, b, c, d, e, f, g) that requests pages in the following order: a, c, a, b, a, d, a, c, b, d, e, f a. Using the FIFO page removal algorithm, indicate the movement of the pages into and out of the available page frames (called a page trace analysis) indicating each page fault with an...
Given that main memory is composed of four page frames for public use, use the following...
Given that main memory is composed of four page frames for public use, use the following table to answer all parts of this problem: Page Frame Time When Loaded Time When Last Referenced Referenced BIT Modified BIT 0 09 307 0 0 1 17 362 1 0 2 10 294 0 1 3 160 369 1 1 The contents of which page frame would be swapped out by FIFO? The contents of which page frame would be swapped out by...
Given the following page-reference string, show the allocation of 3 frames of memory using FIFO ,...
Given the following page-reference string, show the allocation of 3 frames of memory using FIFO , LRU and OPT. How many page faults for FIFO, LRU and OPT? 3,1,2,1,3,1,4,1,3,2,4,2,5,6,4,6,2,1,6,5
Consider the following page reference using four physical frames that are initially empty. (a) (5 points)...
Consider the following page reference using four physical frames that are initially empty. (a) (5 points) Find the page faults using LRU algorithm, where the page reference sequence: 5,2,5,1,4,5,2,0,4,2,3,1,2,1,0,0,2,4,5,1? (b) (5 points) Find the page faults using FIFO algorithm, where the page reference sequence: 5,2,1,5,1,0,3,1,2,1,4,0,5,4, 2,3,3, 4,2,1? (c) (5 points) Find the page faults using LRU algorithm, where the page reference sequence: 5, 0, 4, 4, 0, 3, 0, 4, 1, 0, 2, 0, 5, 3, 0, 1?
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.
4 Consider a virtual memory system with FIFO page replacement policy. For an arbitrary page acces...
4 Consider a virtual memory system with FIFO page replacement policy. For an arbitrary page access pattern, increasing the number of page frames in main memory will (GATE CS 2001) a) Always decrease the number of page faults b) Always increase the number of page faults c) Some times increase the number of page faults d) Never affect the number of page faults
Consider the following sequence of page references 8, 5, 1, 8, 2, 5, 1, 4, 2, 3, 5, 3, 2, 8, 4. Assume that the memory h...
Consider the following sequence of page references 8, 5, 1, 8, 2, 5, 1, 4, 2, 3, 5, 3, 2, 8, 4. Assume that the memory has 3 frames which initially are free. What is the number of page faults using each of the following algorithms? a. FIFO b. LRU c. Clock d. Optimal
3. Assume a virtual memory system with the following properties: • The physical memory available to...
3. Assume a virtual memory system with the following properties: • The physical memory available to an application consists of four-page frames, with frame numbers 0, 1, 2, and 3. The application has six pages of data in its virtual address space, using page numbers 0, 1, 2, 3, 4, and 5. Build a table showing which frame is used to bring in each page for the following sequences of page references using FIFO, MIN, and LRU as page replacement...
3. Assume a virtual memory system with the following properties: • The physical memory available to an application consists of four-page frames, with frame numbers 0, 1, 2, and 3. The application has six pages of data in its virtual address space, using page numbers 0, 1, 2, 3, 4, and 5. Build a table showing which frame is used to bring in each page for the following sequences of page references using FIFO, MIN, and LRU as page replacement...
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