Performance degradation curve - page five

A little over a year ago I met with another tester in town to provide advice on performance testing. I recently found the notes from the meeting in an old notebook. In the five pages of handwritten notes, I documented my understanding of the problem and how I would approach the project. Take these notes for what they are - sketches over the course of an hour or two as I asked questions and clarified the project. However, I thought they would be interesting to share.

The fifth page was a description of a performance degradation curve and how to use it.

Performance degradation curve

As we discussed how to translate the results into a simple chart, I provided an overview of a performance degredation curve. We talked about what it might look like to graph capacity and/or licensing.