1 votes 1 votes with a four programs in memory and with 80% average I/O wait,the CPU utilization a)60% b)70% d)90% d)100% Sanjay Sharma asked Jan 3, 2017 Sanjay Sharma 5.0k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 2 votes 2 votes The CPU utilization can be modeled by the formula:- CPU utilization = 1 - p^n Here n is number of process and P is the time waiting for I/O. In your question n=4 and p =.80 so Utilization is 1-.8^4 which is .6 (i.e. 60%) Meenakshi Sharma answered Jan 3, 2017 • selected Jan 3, 2017 by Sanjay Sharma Meenakshi Sharma comment Share Follow See all 3 Comments See all 3 3 Comments reply air1 commented Jan 3, 2017 reply Follow Share can someone explain this formula? 0 votes 0 votes Surajit commented Jan 4, 2017 reply Follow Share @Meenakshi...it will be great if you can point out the reference link of chapter name of the book where you found this. I just wanted to know how it was derived. 0 votes 0 votes lRadha commented Jul 5, 2018 reply Follow Share Refer for derivation: https://gateoverflow.in/30223/cpu-utilization 0 votes 0 votes Please log in or register to add a comment.
