2 votes 2 votes Suppose in a system, processes arrive at an average rate of 6 per minute.On average each process takes 8 seconds of service time. Estimate the % of time CPU is idle in a single processor system is ______ Operating System operating-system process-scheduling + – AnilGoudar asked Jan 2, 2018 AnilGoudar 3.0k views answer comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments Ajay Jadhav commented Jan 2, 2018 reply Follow Share consider process coming at 0,10,20,30,40,50 seconds thus 6 process 1st process will be done servicing at 8th second ,so CPU has to wait until 10 th second until 2nd process arrives i.e CPU waits for 2 seconds ,this will happen for all 6 processes and again after 6th process ,CPU will wait for 1st process 6*2=12 seconds wait(IDLE)=(12/60*)100=20% 2 votes 2 votes Anu007 commented Jan 2, 2018 reply Follow Share see question ask , unutilized time ; 6 process come in 1 minuts = in one 60 seconds 6 process executes only now it says each take 8 sec to execute = so total time for execution = 6 $\times$8 = 48 unutilized time = ideal time = 60 - 48 = 12 sec in % = $\left ( \frac{12}{60} \right )\times100 = 20$% 1 votes 1 votes AnilGoudar commented Jan 2, 2018 reply Follow Share Got it, thanks all. 0 votes 0 votes Please log in or register to add a comment.