InhaltsangabeBenchmarking Concepts: An Introduction.- Economic Auditing of Control Systems.- Controller Benchmarking Procedures: Data-driven Methods.- Controller Benchmarking Procedures: Model-based Methods.- Divided Wall Distillation Column Simulation Study.- Locating the Source of a Disturbance.- Benchmarking Control Loops with Oscillations and Stiction.- Controller Benchmarking Algorithms: Some Technical Issues.- A Look Back and a Look Forward to New Research Directions.