running Minecraft server gives fatal error consistently

[zealous egret]

<@&987246652869971988> please have a look, thanks.

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TJ-Bot

Im running a minecraft 1.20.6 server, for the last couple of days i havent been getting this error and seemingly randomly i started getting it today . I was originally running java 21 and now i have 22 installed because i wanted to see if that would help.

This error could be caused by a number of different issues. It's important to first check the server logs to see if there are any specific error messages that could give more insight into what is causing the crash.

One common issue that can cause a fatal error is running out of memory. Make sure that you have allocated enough RAM to the server in your launch settings. You can do this by editing the start script or launcher profile used to run the server.

Another potential cause of fatal errors is plugin conflicts or outdated plugins. Try disabling all plugins and then re-enabling them one by one to see if a specific plugin is causing the issue.

It's also possible that there is a corruption in your world files. Try creating a new world and seeing if the error still occurs. If it doesn't, then you may need to restore a backup of your world files.

If none of these solutions work, you may want to try reinstalling Minecraft server completely or reaching out to the Minecraft community for additional support.

- AI generated response

[toxic mason]

The error is like 177 thousand characters long
bro what???

also we cant really help with this little information

we at least need some error

[sonic vault]

G1 crashing 🤔

[toxic mason]

thats the garbage collector

and that shouldnt happen lol

thats what I could find:
https://docs.oracle.com/en/java/javase/22/troubleshoot/troubleshoot-system-crashes.html

[radiant nest]

If you're on vanilla G1GC should be totally fine

I've never seen this happen before lol

it says its using 1000 mb

[toxic mason]

Yeah this is pretty odd

[radiant nest]

Can you maybe share your startup parameters?

[toxic mason]

1GB is not enough for a server ngl

[radiant nest]

gave it like 16 gb of ram

that's overkill btw

use around 6-10 if you have many players

at that point more RAM won't help

[radiant nest]

I also found that this can be caused by bad RAM

e.g. damaged or worse

but not sure ofc

[sonic vault]

yea could be a problem

but

you forget that he is using xmx

-Xmx16000m

so java could allocate up to 16gb

so it shouldn't be a problem

16gb is a lot

@radiant nest @toxic mason

ah and also, this is heap space ram limits

so if it uses more than 16gb, then it would throw an out of memor error

which isn't the error here

so it's totally different

Another strange thing it’s doing is that when the server opens it ( before shutting down 10 seconds later ) it says its using 1000 mb and has soemthing like 8% ram free even though i gave it like 16 gb of ram
Wdym, show what you saw please @radiant nest

[undone zephyr]

Another strange thing it’s doing is that when the server opens it ( before shutting down 10 seconds later ) it says its using 1000 mb and has soemthing like 8% ram free even though i gave it like 16 gb of ram

you're allowing it to allocate up to 16gb. that doesn't mean it's going to use all 16gb. java uses as much memory as it needs

[toxic mason]

you talking about speed (in MHz)?

its probably caused by cpu or mainboard limitations

also 466 MHz is ass

check the cpu/mainboard specifications to see the max ram speed

ah ok

still check the specifications

it might not properly work as well

I can check

which cpu/mainboard you got?

[sonic vault]

how did you find this answer ?

[toxic mason]

seems like 3200 MHz max

[toxic mason]

its common for ram with high speed if cpu cant handle that

[toxic mason]

and thats fast enough for anything minecraft related

thats basically fast enough for anything lol

[signal fossil]

on a side note, how do you even change ram speed lol? from bios maybe?

[radiant nest]

another side note

Don't set it to 16GB RAM

and keep xmx and xms the same

(This advice only counts for Minecraft servers)

Xms is the start amount

If that's not the same as xmx it will take and give back memory to the OS which takes time

so the general rule of thumb for a server that's running MC only is to set xmx and xms to the amount of RAM you have minus 2-3GB for JVM overhead and the OS itself

may be a bit different for running on your home pc ofc

since you run other programs that need it too

[toxic mason]

Yeah bios

There is also xmp which will automatically configure it iirc

[toxic mason]

no

xms shouldnt be 16gb

idk how much ram you got

but 8gb should be enough

if its not like a big ass server

well then you maybe need more

though imo it should still be fine

no its not bad

[toxic mason]

if its running on a different device you can actually take this advice

though almost 30gb ram sounds overkill for a 20 player server

that they both should have the same amount

no its fine

I didnt know you got 32gb and I said that because it sounded like overkill

[radiant nest]

It's not inherintly 'bad'

but don't expect better performance just because you give more RAM

more RAM also means more RAM to clean up, so at some point there is deminishing returns

it's always a bit hard to pinpoint when running Minecraft

that's why for vanilla 8GB should be good enough in most cases

and since Minecraft is still single threaded for the most part, single core cpu speed also counts

buuut if it works it works

[toxic mason]

iirc it says 4gb is recommended for vanilla minecraft, so that might be better to use

but thats for the client

not for the server

[radiant nest]

server with 20 players I would recommend 8gb

also depends on what you're building

farms / entities are quite a big contributor to RAM usage

[sonic vault]

More ram could cause problems indeed
But there are GCs that can handle that like ZGC

[zealous egret]

@radiant nest

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