CS 6553 Performance Evaluation, Fall 2002 Assignment 1

Due Thursday, September 26, 2002

Problem 1
In this problem you will design an experiment to test whether NFS causes a significant penalty when a file is copied. Your experiment will compare local file copy with a file copy done through NFS. In this problem you will just do the design You are not asked to make any measurements. A file copy is done using the following steps

• open the source file.
• read the file from the source into memory
• write the file from memory to the destination
• close the source and destination files.

1. What is the SUT?
2. What is the CUS?
3. What are the parameters?
4. What are the factors?
5. What values of the factors will you use for each test?
6. How many tests will you run?
7. How will you make sure that the parameters do not change between tests?
8. Describe in detail how you will perform each test and what you will measure.

Problem 2: 12.2 from Jain
Use them method we discussed at the beginning of class on Sept 5 in determining the expected number of transmissions for success.

Problem 3: 12.4 from Jain
You will need to know the mean and variance for problem 12.3. You can either calculate this or look it up in the text.

Problem 4:12.7 from Jain

Problem 5:12.11 from Jain

Problem 6:12.14 from Jain

Problem 7:12.15 from Jain
Write a program to compute the q_i, x_i and y_i as in Table 12.5 and then use a standard plotting package.