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A key to the performance of the VSWS resident set management policy is the value of Q. Experience has shown that, with a fixed value of Q for a process, there are con- siderable differences in page fault frequencies at various stages of execution. Further- more, if a single value of Q is used for different processes, dramatically different frequencies of page faults occur. These differences strongly indicate that a mechanism that would dynamically adjust the value of Q during the lifetime of a process would improve the behavior of the algorithm. Suggest a simple mechanism for this purpose.

A key to the performance of the VSWS resident set management policy is the value of Q. Experience has shown that, with a fixed value of Q for a process, there are con- siderable differences in page fault frequencies at various stages of execution. Further- more, if a single value of Q is used for different processes, dramatically different frequencies of page faults occur. These differences strongly indicate that a mechanism that would dynamically adjust the value of Q during the lifetime of a process would improve the behavior of the algorithm. Suggest a simple mechanism for this purpose.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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A key to the performance of the VSWS resident set management policy is the value of Q. Experience has shown that, with a fixed value of Q for a process, there are con- siderable differences in page fault frequencies at various stages of execution. Further- more, if a single value of Q is used for different processes, dramatically different frequencies of page faults occur. These differences strongly indicate that a mechanism that would dynamically adjust the value of Q during the lifetime of a process would improve the behavior of the algorithm. Suggest a simple mechanism for this purpose.
Transcribed Image Text:A key to the performance of the VSWS resident set management policy is the value of Q. Experience has shown that, with a fixed value of Q for a process, there are con- siderable differences in page fault frequencies at various stages of execution. Further- more, if a single value of Q is used for different processes, dramatically different frequencies of page faults occur. These differences strongly indicate that a mechanism that would dynamically adjust the value of Q during the lifetime of a process would improve the behavior of the algorithm. Suggest a simple mechanism for this purpose.
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