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]??

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
icon
Related questions
Question

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
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Development strategies
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education