I don't believe there are any performance statistics kept for the application I'm being asked to replace, and don't want to ask the individuals doing the work to manually record things like how long it takes them to perform a given task. However, the main objective of my project is to make it easier for the users to get their work done. If I don't know how difficult or time consuming it is for them now, how can I objectively show that the new system fulfills that objective?
Would adding a few high-level logging statements and analyzing the logs be straightforward enough? I'm not sure how much effort it would take to do that much, let alone setup anything more sophisticated. Or, are there existing tools out there for this scenario? It seems like something that would be relatively (if not quite) common.