CS 3733 Operating Systems, Spring 2010 Assignment 3 Comments

This assignment was graded out of 20 points.

• Most people had little trouble with doing most of this assignment.
• The hardest part was answering the question in Part 3.
• You were supposed to realize that the context swtich time affects the average waiting time because of two factors: the number of context switches (obviously) and the load average.
• While PSJF might have more context switches than SJF, it is also possible that it will have a smaller load average.
• In this case it is possible that the product of the load average and the number of context switches will be smaller for PSJF than SJF.
• Note that the result of the one experiment that you did cannot prove that something is always true.
• However, if you did a different experiment, it would be possible to show that the statement was not always true.