Parameterisation can mean measurement bounds, data i.e. creating a data file from which items in the file are selected at random or sequential order. Obviously depending on what tool you use the areas of parameterisation can be different. On a whole any script created for performance tests can be 'parameterised' to the users requirements.
Other aspects where parameters are applied to performance tests can be :
- to modify the campaign execution parameters : N users added every S seconds, campaign duration M minutes, etc,
- to determine what the different injectors (PC working as virtual users) must execute as tests,
- to select the input files for each test execution by each injector...
There is obviously a large number of places where parametrization can be applied, the trick is determining what is necessary and what is superfluous.