Performance Testing

1: Why Performance Testing? Why Load Test Your Application?

 

   Prevents costly failures of mission-critical applications.

 

   Assures performance and functionality under rea-worls conditions.

 

   Locates potential problems before your customers do.

 

   Reduces development time.

 

  Reduces infrastructure costs.

 

 

2: Examples of Perfoemance Test Objectives

 

 

   Application response time:

 

   How long does it take to complete a task?

 

   Configuration sizing:

 

   Regression:

 

   Reliability:

 

   How stable is the system under a heavy work load?

 

3: Determine Transation Concurrency

   How many transactions will need to be run per minute if a load test has to be run for two hours with

   1000 users, assuming an average trasaction length of five minutes

 

    Determine how many transactions run per minute:

            .120 min / 5 min = 24 iterations for each user

            . 1000 users * 24 iterations = 24000 transactions

            . 24000 transactions / 120 minutes = 200 transactions per minute