Hey I've got a quick question on having multiple worlds running on a server. What is the actual memory increase I would see by adding an extra world ?
your memory would not increase, I actually think mine decreased after reading the question a couple of times, contemplating being a jerk, or answer is legitimately. The extra world would increase hard drive space consumption. with a small amount of extra ram usage, but not as much as running a 2nd server.
I think a second world does a bit but its just like having two people in two completly different parts of the map, becuase the server has to render two different places.
The above 2 posters are correct, a second world would not change your worst case scenario memory usage at all. (Assuming the plugin is already installed. If not, It will increase by like ~25 mb's)