I have done much testing for upgrading my server from 1.0.6 to 1.1.4 and found that there is a large performance problem with 1.1.4
It takes 20min for the server to fully boot up and be ready for people to login. After it's up and running the CPU has a 30% increase to idle running and there are consistent spikes to 90% that don't last long as long as no one is logged in. After people are logged in the spikes stay there for a long time and the game is almost unplayable. This does not happen with the same group of people on the 1.0.6 version.
We will not be updating...
Here is the server log incase you can see a problem that I should address: http://pastebin.com/ZS72sDg6