Hotspot-Server "made not entrant"?

Performance Tuning
#1

Just for interrested, what does hotspot mean when telling me “made class::method not entrant”?

lg Clemens

#2

This means that the compiled code for that method was invalidated, typically because of class loading or because an uncommon path was taken in the compiled code. In this case HotSpot will typically revert to the interpreted version of the method and gather more profiling data before recompiling later.

#3

Thanks a lot, very interresting!
I just thought it must be something like that (since later on these methods were collected as “zombies”) but I wasn’t really sure and hotspot-server’s complexity and power still impress me.

lg Clemens