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For the interactive system in Figure, suppose that we are given the following information: mean user think time = 5 seconds expected service time at device i = 0.01 seconds utilization of device i = 0.3 utilization of CPU =0 .5 expected number of visits to device i per visit to CPU = 10. expected number of jobs in the central subsystem (the cloud shape) = 20. expected total time in system (including think time) per job = 50 seconds. How many jobs are there in the queue portion of the CPU on average. E[NQcpu]??

For the interactive system in Figure, suppose that we are given the following information: mean user think time = 5 seconds expected service time at device i = 0.01 seconds utilization of device i = 0.3 utilization of CPU =0 .5 expected number of visits to device i per visit to CPU = 10. expected number of jobs in the central subsystem (the cloud shape) = 20. expected total time in system (including think time) per job = 50 seconds. How many jobs are there in the queue portion of the CPU on average. E[NQcpu]??

Enhanced Discovering Computers 2017 (Shelly Cashman Series) (MindTap Course List)
Enhanced Discovering Computers 2017 (Shelly Cashman Series) (MindTap Course List)
1st Edition
ISBN:9781305657458
Author:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. Campbell
Publisher:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. Campbell
Chapter6: Computing Components: Processors, Memory, The Cloud, And More
Section: Chapter Questions
Problem 23CT
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For the interactive system in Figure, suppose that we are given the following information:
mean user think time = 5 seconds
expected service time at device i = 0.01 seconds
utilization of device i = 0.3
utilization of CPU =0 .5
expected number of visits to device i per visit to CPU = 10.
expected number of jobs in the central subsystem (the cloud shape) = 20.
expected total time in system (including think time) per job = 50 seconds.
How many jobs are there in the queue portion of the CPU on average. E[NQcpu]??

1/2 CPU Device i 1/2 00...O
Transcribed Image Text:1/2 CPU Device i 1/2 00...O
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