I created a pull request that shows basically how to start a jmh test for hibernate using a maven surefire plugin (junit test). This is only a simple example but it shows how to create a json file that can by used by jenkins to create a nice diagram regarding changes in the micro performance of hibernate.
see https://github.com/hibernate/hibernate-orm/pull/2807
I know you guys are basically aware of performance reports like http://jmh.morethan.io/ and use it yourself where needed.
In case you did not introduce that because it was not worth the effort maybe I can lower the effort for you providing this. It would make it easier for me to report performance problems if there is something like this in the code base.