Man, running a Minecraft server with 5 players on a VPS with 1 vCore and 1GB of ram is *really* pushing this thing to its limits!
Thank goodness Ubuntu Server doesn't need much ram to run, because Minecraft is a real resource hog.
I hope Hetzner approves my account on monday, so we can move to a 2 core VPS with 4GB of ram!

@EaZyCode cool, what kind of hardware are you running on?
My server runs mostly fine with 3-5 players, it's the active redstone and mob spawners that cause stuttering and heavy lag.

Iirc there is a native implmentaion of the minecraft server

🏕️

@EaZyCode lucky for me, I don't plan to host that many players anytime soon 🤣 But at least that means I should be fine once I migrate to the new VM. I'll have to look into editing the server jar, didn't know you could do that

@terraria99 are you referring to Microsoft's new C++ version of Minecraft (which is not compatible with the classic Java Edition), or an actual reimplementation of the Java Edition (that supports all the latest features)?

@endor https://cuberite.org/ it for the java version

@EaZyCode

But you have the map already generated + running an older version right?

@EaZyCode

Yeah I am on 1.13.2, and with a non pre generated map. I lags when many chunks is loaded even if I have 16c/32threads.

Someone recently asked how many players he could have on a server hosted on a Raspberry Pi. He didn't specify which model, but since I had the most powerful model at that time, I did a test. The answer is 0. It is barely able to run the server without any players online, even then it sometimes skips ticks. And that was in Minecraft 1.12.2, when performance was still good.

@Fabian as a former bukkit Dev, let me tell you that the internals of the MC server jar are hideous. There's little to no real concurrency for jobs on that main thread, and any slowdown from the Mojang internals cannot be mitigated well at all. It needs a serious internal overhaul Mojang is not going to do.

@Techno-Wizard Let's hope that the horrendous awfulness of 1.13 motivates them enough to optimise all the things for 1.14. There are also quite a lot of low hanging fruit, like for example not using the full CPU core if it doesn't need it! Don't busy wait, that's performance 101! </rant>

@Fabian yeah, it's absolutely awful. Frankly, go write the core in C/C++ instead of entering the polymorphic hellscape that is those internals. There's literally an entire class deticated to the server "heartbeat" as they call it, which is supposed to manage internal jobs but the data structures involved make absolutely no sense. Almost every internal process is single threaded. There's almost no concurrency.

@Techno-Wizard Well, they did rewrite it in C++ and you can see what came out of that. MCPE. Which is waaay worse.

@Fabian Well duh. If they're not going to release it on all platforms and make it specifically for a platform that it really isn't compatible with the kind of game play MC has, it's gonna suck.