> good point about the ":", but I think it's good to have the minutes too as I'd want to avoid overwriting a report if a day I'm running multiple tests for comparisons.

Fair enough. We can change the format, but I think we agree that ':' is not ideal in a file name.

> Why should the reports be in target ? Just curious about your reasoning, I personally don't care where it is as long as I can move it from a script, so I'd go with the simplest solution.

Because it is a file generated by the build and I also want it to be deleted by a _clean_. It is also about expectations. I expect generated things to be in there. Initially I could not find the report and even added a comment. Also I am not sure whether the location now changes depending from where you run the build (from the root project vs from the performance module directly). It might actually be that if you trigger the build from the root you end up with the report there. 

It is also easy to do. We have the helper to get the absolute path to the target directory.