Recall that the percentage of CPU idle time is given by the probability that ALL processes...
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Recall that the percentage of CPU idle time is given by the probability that ALL processes are in the waiting state. The CPU utilization is 1 – idle time. Suppose the following processes exist in a system: P1 has I/O wait time of 20% P2 has I/O wait time of 50% P3 has I/O wait time of 20% What is the CPU utilization of the system? • If all processes have 40% I/O wait, what is the minimum number of processes to achieve 90% CPU utilization? •Suppose that an operating system can only create 100 processes, what is the maximum I/O wait that can be tolerated to achieve 90% CPU utilization? Recall that the percentage of CPU idle time is given by the probability that ALL processes are in the waiting state. The CPU utilization is 1 – idle time. Suppose the following processes exist in a system: P1 has I/O wait time of 20% P2 has I/O wait time of 50% P3 has I/O wait time of 20% What is the CPU utilization of the system? • If all processes have 40% I/O wait, what is the minimum number of processes to achieve 90% CPU utilization? •Suppose that an operating system can only create 100 processes, what is the maximum I/O wait that can be tolerated to achieve 90% CPU utilization?
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Related Book For
Operating Systems Internals and Design Principles
ISBN: 978-0133805918
8th edition
Authors: William Stallings
Posted Date:
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