BUT the thing is that it actually did not lag last time I checked. Only now it is lagging like complete crap. And my computer can't be the problem, its an i5, 4GB RAM, and its running Lubuntu. And it is not running anything else. I play Minecraft on another computer. So what happened any ideas?
I'm assuming this is good enough to run a server, right?
With results like that, if you honestly have to ask, they you have no business running a server... Just saying.
Not to mention that is likely from a University or something of that nature, so running a server is basically out of the question. You most likely don't have access to the firewall to properly port forward.