In the working set model, the idea is to examine the most recent delta page referances. It is also known as an approximation of the Program's Locality. If the total demand is greater than the total number of available frames (D>m) then it will cause thrashing, because in this case, some processes will not have enough frames. Below you see 3 processes and their excepted memory references during their execution. When will the thrashing happen to occur according to the working set model? Assume total memory(m) is 10 and Delta is 5 In the working set model, the idea is to examine the most recent A page references. It is alsoknown as an approximation of the Program's Locality. If the total demand is greater than thetotal number of available frames (D > m), then it will cause thrashing, because in this case,some processes will not have enough frames. Below you see 3 processes and their expectedmemory references during their execution. When will the thrashing happen to occuraccording to the Working set model? Assume total memory (m) is 10 and Delta (A) is 5..Time:1234.7 8 9 10 11 12 13 14 15 16 17P1=2 62 2 6 2 6 2 1 2 4 3 5 4 5 4 6P2D7 86 7Z 8 6 Z 9 4 9 8Z 6 9 96 26 6 6 6 6 2 1 4P3=3.22

Answer : Thrashing will not occur in the system Explanation: The maximum demand for pages is just 14…

Answered: In the working set model, the idea is…

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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In the working set model, the idea is to examine the most recent delta page referances. It is also known as an approximation of the Program's Locality. If the total demand is greater than the total number of available frames (D>m) then it will cause thrashing, because in this case, some processes will not have enough frames. Below you see 3 processes and their excepted memory references during their execution. When will the thrashing happen to occur according to the working set model? Assume total memory(m) is 10 and Delta is 5

In the working set model, the idea is to examine the most recent A page references. It is also
known as an approximation of the Program's Locality. If the total demand is greater than the
total number of available frames (D > m), then it will cause thrashing, because in this case,
some processes will not have enough frames. Below you see 3 processes and their expected
memory references during their execution. When will the thrashing happen to occur
according to the Working set model? Assume total memory (m) is 10 and Delta (A) is 5..
Time:
123
4.
7 8 9 10 11 12 13 14 15 16 17
P1=
2 62 2 6 2 6 2 1 2 4 3 5 4 5 4 6
P2D
7 86 7Z 8 6 Z 9 4 9 8Z 6 9 9
6 2
6 6 6 6 6 2 1 4
P3=
3.
2
2

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