MadeEasy Test Series: Operating System - Process Schedule

Question

Consider that we have a multi-programmed computer in which each job has identical characteristics i.e. in one computation period T for a job, half the time is spent in I/O and the other half in CPU activity. Each job runs for a total of n periods. If four simultaneous jobs, assuming that the period T is distributed as I/O first half, processor second half, with Round Robin scheduling is used and I/O operations can overlap with processor operation, then what is the average Turn Around Time?

1.(2n-1)+0.75

2.(n-1)+0.75

Comments

In this each process has n periods of T time that is process burst time is Tn periods and tq is T pds.

Now whenever such type of questions come, just assume n=1,2,3..

and then u will find the correct option!

do it urself if u cant then i will post the solution!!

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@gate fever bro i tried but didnt get it please explain the approch

Answer 1

 

 

 

 

 

in the options they have not mentioned but it would be 

(2(n)-1+0.75)T

Comments

well explained bro! @Gate Fever