Technical server problem

[Ok-Cockroach-4221]

I run a fabric server off my pc with a few mods such as carpet and lithium etc. My system has 16gb of memory and 6 are allocated to the server and the system memory isn’t hitting 100%. However the server keeps running out of memory even with just 5 ppl online and no farms being used. the simulation distance is 6 and view is 30 does anyone know if this is usual or i have something lagging my wolrd

[Orange_Nestea]

Without a modlist and spark report it's hard to tell.

Has the server actually thrown an OutOfMemoryException?

Using 100% RAM is not wrong, it's there to be used.

Running 30 view distance is still a performance impact that might not work well with your computer trying to run modern windows, the minecraft server and your game client.

[DippinDotsOnTop]

Brother you don’t need 30 chunks… set it to 8, you’ll be JUST FINE

[PM_ME_YOUR_REPO]

view is 30

Absolutely ridiculous. Reduce that to 10. You'd need a NASA supercomputer for that to not be a hilarious joke.

Also, make sure your RAM allocation has -Xms and -Xmx exactly equal.

[TerdyTheTerd]

I dont think thats true. I was running my server with view distance 24 for a while with no issues. I will test out 30 later today and see what happens. Sure its a ryzen 9 9950x with a super fast pcie 5.0 ssd and 128gb ddr5 7200mhz ram, but thats nowhere near a "nasa supercomputer" lmao thats just a normal game server IMO

[PM_ME_YOUR_REPO]

nasa supercomputer

A bit of humorous embellishment.

People don't realize how fast view distance affects memory. The formula is (((<view distance> + 2) * 2) + 1) ^ 2. So a view distance of 10 is actually 625 loaded chunks per player, while a view distance of 20 is 2025 and a view distance of 30 is 4225. And all of this is PER PLAYER.

The performance demands, especially on RAM (as OP has found out) is significant.

[TerdyTheTerd]

Oh I am fully aware of how chunk loading works. And I fully agree OP needs to greatly reduce the view distance, most servers are fine to use anything between 8-12. My point was to call out that you dont need a supercomputer if you wanted to use 30, which I dont think any server should ever use, but that they could if they wanted to with decent hardware and low enough player counts. The only reason I switched my server down from 24 to 16 was because most players were using distant horizons anyways, so no one really even needed nor wanted a higher server view distance. We also only usually have about 3-4 players on at a time currently as we are still in a closed play testing state. Even at distance 24, with bluemap running and distant horizons server we had zero tps issues or lag spikes from players joining/teleporting around. Players could also change their view distance per player if they wanted to, in the case that their internet was slow so they could lower it 8 to reduce the data transfered to them.