In a multiprogrammed environment with 32MB of RAM where all processes require 9MB of unshared RAM and spend 40% of their time in I/O wait, calculate the maximum achievable CPU utilization. If the RAM available is increased by 700% and time spent in I/O wait increases by 100%, calculate how much RAM will remain unused when CPU utilization is just above 99%.

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter4: Processor Technology And Architecture
Section: Chapter Questions
Problem 2PE: If a microprocessor has a cycle time of 0.5 nanoseconds, what’s the processor clock rate? If the...
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In a multiprogrammed environment with 32MB of RAM where all processes require
9MB of unshared RAM and spend 40% of their time in I/O wait, calculate the
maximum achievable CPU utilization. If the RAM available is increased by 700%
and time spent in I/O wait increases by 100%, calculate how much RAM will remain
unused when CPU utilization is just above 99%.

 

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