4.Consider the following set of jobs to be scheduled for execution on a single CPU system (a) Draw a Gantt chart showing preemptive SRJF scheduling. (b) Calculate and show the average waiting time and turnaround time. (c) Now assume that, process P3 used the CPU for (10ms, 4ms, 11ms) in its 3 previous executions. What will be the next CPU burst prediction for P3 if the system uses exponential averaging with = 0.6 for most recent past and = 0.4 for the earlier cpu usages.

Cpu time 8 Process P1 P2 P3 P4 P5 Arrival time 0 4 7 9 14 6 1 3 5