Assume in a Virtual Memory system, a program needs 10 pages with page numbers 0 to 9 and each page is 4 words and the program is allocated 3 page frames: a, b, and c. The word trace for 26 memory accesses by the program are listed below. Use a table similar to the one shown on Slide 7 of Lesson 20 to compare the three replacement policies: LRU, OPTimal, and FIFO, by calculating and comparing the hit rate of each policy for these 26 memory accesses. Word trace: 0, 1, 2, 3, 8, 16, 17, 4, 5, 6, 7, 9, 10, 11, 12, 8, 9, 10, 28, 29, 30, 4, 5, 12, 4, 5
Assume in a Virtual Memory system, a program needs 10 pages with page numbers 0 to 9 and each page is 4 words and the program is allocated 3 page frames: a, b, and c. The word trace for 26 memory accesses by the program are listed below. Use a table similar to the one shown on Slide 7 of Lesson 20 to compare the three replacement policies: LRU, OPTimal, and FIFO, by calculating and comparing the hit rate of each policy for these 26 memory accesses. Word trace: 0, 1, 2, 3, 8, 16, 17, 4, 5, 6, 7, 9, 10, 11, 12, 8, 9, 10, 28, 29, 30, 4, 5, 12, 4, 5
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Assume in a Virtual Memory system, a program needs 10 pages with page numbers 0 to 9 and each page is 4
words and the program is allocated 3 page frames: a, b, and c. The word trace for 26 memory accesses by the program
are listed below. Use a table similar to the one shown on Slide 7 of Lesson 20 to compare the three replacement
policies: LRU, OPTimal, and FIFO, by calculating and comparing the hit rate of each policy for these 26 memory
accesses.
Word trace: 0, 1, 2, 3, 8, 16, 17, 4, 5, 6, 7, 9, 10, 11, 12, 8, 9, 10, 28, 29, 30, 4, 5, 12, 4, 5
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