Besides having many people join you're server, are there any plugins to create fake players or is there another form of stress testing?
You could go to offline mode and mass log in accounts while having them random spawning with some plugin. Therefore chunk load would be higher and actual player account would be more. That would be a lot of work and less protection though.
Or PlayerSim or whatever by Amaranth, on his GitHub. If you look at the EcoCityCraft github, Gauge is supposed to be a better version of both of those.
