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Consider a system where an average process spends 70% of its time waiting for I/O. What...

Consider a system where an average process spends 70% of its time waiting for I/O. What should be the degree of multiprogramming to achieve 95% CPU utilization in the system?

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Let n be the number of processes in the system and process waits for 70% of time and and 30% of time it utilizes the CPU and then we can see that 0.3T*n=0.95T and Hence we can see that acceptable number of processes is 3.16 or 4

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