User: "It must work as quick as possible".
XP developer: "What is the slowest acceptable time for the software to run?"
User: "Anything less than one hour".
XP developer: "So 1 hr 5 mins is no good?"
User: "Up to 2 hours would be ok, but most days it should take less than 1".
How do you as an XP developer test this? (Remember: Fail as early as possible in the project)
To be added ...
Sample code here ...
Conclusion:
Make sure your users write a SpeedStory? early in your development.
Implement this as early as possible.
TestItMustWorkThisQuick