Playframework-slowpages is a project mainly written in PYTHON and JAVA, it's free.
Play! Framework Slow Pages
Play! Framework Slow Pages Module by Felipe Oliveira
slowpages.max=0 slowpages.enabled=true
It tracks the execution time, if it happens to be greater than the value defines on slowpages.max it logs a warning. You can disable it by using the property key slowpages.enabled.
If you define slowpages.max=0 it will log on every request.
You can add your own listener by calling SlowPagesPlugin.addListener().