CS 3733 Operating Systems, Fall 2008 Assignment 2 Comments

• This assignment was graded on the basis of 30 points.
  • Part 1: 10 points
  • Part 2: 10 points (5 for CST calculation, 5 for simulator log and table)
  • Part 3: 10 points (5 for simulator log and table, 5 for statement answer)
• Almost everyone filled in the tables correctly.
• The statement from part 3 is not correct.
• As stated, it is not correct beacuse sometimes PSJF does the same number of context switches as SJF, in which case they give exactly the same results.
• More importantly, in cases in which the load average for PSJF is a lot smaller than for SJF, each context switch will affect SJF much more.
• For a statement like this one to be true, it must be true in all cases.
• It is not possible to prove such a statement is true with any number of experiments.
• It only takes one experiment to prove it false.
• Most of the class said that they thought the statement was true, either because it made sense or beacuse of the experiment.