I have a servlet-based application wherein I measure the time taken to complete each request to that servlet. I already compute simple statistics like the mean and maximum; I'd like to produce some more sophisticated analysis however, and to do so I believe I need to properly model these response times.
Surely, I say, response times follow some well-known distribution, and there are good reasons to believe that distribution is the right model. However, I don't know what this distribution ought to be.
Log-normal and Gamma come to mind, and you can make either one sort of fit real response time data. Does anyone have a view on what distribution the response times ought to follow?