1 votes 1 votes Consider the following table Using the shortest remaining time first, find the CPU utilization in %, if the context switching overhead is 1 unit. 30% 28.5% 29.5% Operating System operating-system + – Akriti sood asked Dec 6, 2016 Akriti sood 529 views answer comment Share Follow See all 6 Comments See all 6 6 Comments reply Show 3 previous comments Akriti sood commented Jan 13, 2017 reply Follow Share i guess i have made a wrong gannt chart,making agin i am getting total time as 45 thats because when second cPU burst of P1 is remaining and 9 units of first cpu burst of P2 has executed then,since only 1 unit is remaining (1<4)..so only P2 will continut..and after that 4 unit of I/O of P2 and 4 BT of P1 will overlap..?and then aftr finishing BT of P1,remaining I/0 of P2 will start.will context switch occur here? 0 votes 0 votes mohit chawla commented Jan 13, 2017 i edited by mohit chawla Jan 13, 2017 reply Follow Share @akriti , answer can never be these 3. that is for sure.Now there are 3 points where i am getting confusion. if that stackoverflow link is followed. so there is my answer. check it and let me know if you find any mistake in it. https://drive.google.com/file/d/0B9VqtZXW82cZdnpLbXpkUXdwTDA/view?usp=sharing 0 votes 0 votes Akriti sood commented Jan 16, 2017 reply Follow Share mohit,i was getting total time as 45. can we overlap I/O with context switch time?? and have u considered context switch in last case when P2 completes its I/O and goes for CPU?? 0 votes 0 votes Please log in or register to add a comment.
