Hibernate performs unnecessary dirty-checking, eating up high CPU

Crowd seems to be affected by the following problem during application syncs, whereby calls to java.lang.Class.getInterfaces() consumes a high amount (~80%) of the CPU:
https://forum.hibernate.org/viewtopic.php?p=2404651

Quoting the above thread:

Hibernate seemed to be spending a lot of time in each query checking if the loaded entities were dirty and in need of flushing.

The above user was able to bypass this performance problem by passing a query hint "org.hibernate.readOnly".