Server crashes when joining

Post the latest.log from the beginning. Crash logs have a bunch of useful information removed.

Gotcha, ill post it when it crashes again

Here is the latest log from when it crashed last time though

"-Xmx10240M -Xms256M" try increasing the -Xms flag to something more reasonable like -Xms2048M, or just match it to your -Xmx

@White-winged Crossbill Removed that message for linking a known github that is giving EXTREMELY bad advice.

Which part was bad? Switching to ZGC? Using GrallVM for the jdk? Was it the flags themselves? Removing the link and just saying 'bad' is insincere.

Every 6 months or so, someone in the Minecraft community notices that we've been using Aikar's flags since 2018, and (failing to ask the question "why") immediately decides that they will be the hero to save server owners.

They then do a bunch of "research", run a bunch of flawed benchmarks, never consult anyone with industry experience, and then publish their results.

G1GC is not "old". It works extremely well for Minecraft, and Aikar's flags are still in use because they are almost universally ideal. All other JVM flag configurations fall short in one way or another, except in very specific conditions.

Those conditions are extremely high required RAM, e.g. for very large servers. In that one case, Generational ZGC is optimal, and only with the -XX:+UseZGC -XX:+ZGenerational flags.

That github checks every box I have just described, and also fails to identify that normal, non-generational ZGC is absolutely awful.

So yeah, we don't allow it here, as it continues spreading snake oil misinformation which we inevitably have to correct when people come here with mysterious performance issues.

Thanks for that in-depth, yet brief, explanation. I drank the kool-aid on that one.

Most do. That's why we yeet it out as soon as we see it. I was only so initially terse because I was at the store lmao.

Back on the main issue, that log is sadly PRETTY EMPTY OF INFO. Can you run a Spark report for us?

We're likely going to need some help from you to narrow down the in-game circumstances that cause the performance degradation, as that's just a Watchdog error, e.g. "stuff was frozen so I turned off". Zero help at all, lol.

Could it just be the case of poor hardware? That first report says the cpu is a AMD PRO A12-9800E R7...

Ehhhhh, it could be, but this isn't the typical response for a CPU that just can't hack it. And I mean, I've seen far worse CPUs not doing this. That one's only about 7-8 years old.

Its possible lol

the performace is worse than an i5-2400 which came in 2011 and what i used for my first server. It essentially old AMD architecture to fit the am4 platform

Does the spark jar just go in the mods folder?