Question: Chapter 12: Scheduling operations Priority Dispatching Rules Consider the following data: Job Remaining Processing time (days) Remaining time until due date (days) Critical ratio (?)

Chapter 12: Scheduling operations

Priority Dispatching Rules

  1. Consider the following data:

Job

Remaining Processing time

(days)

Remaining time until due date

(days)

Critical ratio

(?)

A

20

30

B

30

50

C

10

25

D

16

80

E

18

12

  1. Calculate for each job the relative critical ratio.
  2. Analyze the calculated critical ratio.
  3. Basing on the calculated CR, specify the scheduling order of each job. Justify your answer.
  4. Specify and explain a second dispatch rule that can be adopted.
  5. Among the two rules which seems to be the most effective. Justify your answer.

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