Consider three processes, all arriving at time zero, with total execution time of 10, 20 and 30 units, respectively. Each process spends the first 20% of execution time doing I/O, the next 70% of time doing computation, and the last 10% of time doing I/O again. The operating system uses a shortest remaining compute time first scheduling algorithm and schedules a new process either when the running process get blocked on I/O or when the running process finishes its compute burst. Assume that all I/0 operations can be overlapped as much as possible. For what percentage of time does the CPU remain idle?

Consider three processes, all arriving at time zero, with total execution time of 10, 20 and 30 units, respectively. Each process spends the first 20% of execution time doing I/O, the next 70% of time doing computation, and the last 10% of time doing I/O again. The operating system uses a shortest remaining compute time first scheduling algorithm and schedules a new process either when the running process get blocked on I/O or when the running process finishes its compute burst. Assume that all I/0 operations can be overlapped as much as possible. For what percentage of time does the CPU remain idle?

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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Consider three processes, all arriving at time zero,
with total execution time of 10, 20 and 30 units,
respectively. Each process spends the first 20%
of execution time doing I/O, the next 70% of time
doing computation, and the last 10% of time doing
I/O again. The operating system uses a shortest
remaining compute time first scheduling
algorithm and schedules a new process either
when the running process get blocked on I/O or
when the running process finishes its compute
burst. Assume that all I/O operations can be
overlapped as much as possible. For what
percentage of time does the CPU remain idle?

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