Event planners hope to avoid a 'repeat performance' of last year's problems. [=hope that last year's problems will not happen again this year]
a bicyclist who was disqualified for taking 'performance'-enhancing drugs [=drugs that improve your ability to do something]
How has the company's stock 'performance' been? [=has the value of the company's stock been increasing/decreasing?]
(..) ...cast them away. It's a sign, Severus. You know what it means as well as I. Potter! What's your hurry? Congratulations, your performance in the Black Lake was inspiring. Gillyweed, am I correct? Yes, sir. Ingenious. A rather rare herb, gillyweed. (..)2005 Harry Potter and the Goblet of Fire