Hi,
I realized that the Hibernate Statistics lack a few things in my opinion.
 
There are for example:
a) There is a bug in QueryStatisticsImpl that prevents the minTime from being computed properly (HHH-2948)
 
b) Critera Queries are not part of the Query Statistics. This gives an incomplete "picture" to the user. Maybe it is just a naming issue and this should be called "HqlStatistics" but "QueryStatistics" sound to me that Criteria Queries are conained in there. Fixing this should not be too hard.
 
c) I came across some NPEs while trying to get the contents of a Cache Region that got invalidated (I need to dig deeper into this in order to be able to provide more detail)
 
I would step up and help solving some issues around the statistics if desired.
 
Regars,
Mike