Yeah it doesn't matter if you're using the JDK or JRE increasing threads will do little to nothing when it comes to increasing performance of a minecraft server. The code base is heavily single threaded. Take a look if you want everything intensive (ticks) are processed on a single thread as they all have a specific order in which they need to be processed so multi-threading it is highly intensive.
I am part of an on going project to try and replicate this called MIMC.
You can see a web visualsation of what we're trying to achieve here.
Please not this is very much a work in progress and in no way intended for release usage.There are many bugs with world corruption likely to occur.
Plasma2451 got a reaction from FezBoy in Building the ULTIMATE Minecraft Server - Part 1
