GATE | GATE-CS-2014-(Set-3) | Question 65

An operating system uses shortest remaining time first scheduling algorithm for pre-emptive scheduling of processes. Consider the following set of processes with their arrival times and CPU burst times (in milliseconds):

Process      Arrival Time    Burst Time
  P1           0               12
  P2           2               4
  P3           3               6
  P4           8               5

The average waiting time (in milliseconds) of the processes is _________.

(A)

4.5

(B)

5.0

(C)

5.5

(D)

6.5

Answer

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