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Crashes and Performance Issues on modded Server

ToastiMan

By ToastiMan
in Support & Bug Reports

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ToastiMan Tree Puncher

ToastiMan

Posted
Posted (edited)

Hey Guys,

well i'm having quite the heavy performance issues and lately crashes on my Server. Create and Create Steam and Rails are causing quite a lot of lag/fps drops.

Worse right now are frequent crashes without crash log when going near Ocean Monuments, even already generated ones. Tried updating everything to the newest version, doesn't really change much. If anyone can figure out what's causing this or how i can improve performance, i would really appreciate that.

Thanks in advance.

Edit: "[29Apr2023 00:29:35.505] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 64679ms or 1293 ticks behind" <- occurs in an area around the ocean monuments where there is nothing build.

Logs:

  Reveal hidden contents

 

Edited by ToastiMan
warjort Reality Controller

warjort

Posted
Posted

Use a mod like https://www.curseforge.com/minecraft/mc-mods/spark

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

ToastiMan Tree Puncher

ToastiMan

Posted
  • Author
Posted

I've got quite a lot of reports here, i'll structure them:

Starting Spark through console and joining the server

Joining after the first timeout without moving

Moving

Starting the Server again after the crash, this time with Spark GC

After a few minutes playtime with GC

After generating a heapdump and analyzing the files these 2 errors pop up:

  Reveal hidden contents
  Reveal hidden contents


The Rabbits can be ignored, they were there before everything started crashing. Also weird how the server only keeps running after i toggled Spark GC on.
If someone smarter than me can help, that would be awesome.

warjort Reality Controller

warjort

Posted
Posted

I am not sure why you think garbage collection is related to your problem? Have you seen Out of Memory errors?

 

You should read the spark wiki, e.g. you said you had lag spikes: https://spark.lucko.me/docs/guides/Finding-lag-spikes

If you have issues with understanding spark after reading their docs/faq, you should use their discord.

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

ToastiMan Tree Puncher

ToastiMan

Posted
  • Author
Posted
  On 4/29/2023 at 2:29 PM, warjort said:

I am not sure why you think garbage collection is related to your problem? Have you seen Out of Memory errors?

 

You should read the spark wiki, e.g. you said you had lag spikes: https://spark.lucko.me/docs/guides/Finding-lag-spikes

If you have issues with understanding spark after reading their docs/faq, you should use their discord.

Expand  

Because the Server crashes on startup. But if i run the /spark gc or /spark gcmonitor command it doesnt. I don't understand it either, it just persistently works like that, i restarted the server/had i crash on me about 30 times in the last 24h, the only way it didn't crash was if i typed those commands.

warjort Reality Controller

warjort

Posted
Posted

Where do you see the infinite loop?

It's impossible to help if you just keep posting incomplete information.

 

As to why running "spark gc" stops it from crashing, you would need to ask the spark developers.

I would guess something spark is doing is reducing concurrency and stopping a "race condition" bug in one of your mods?

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

ToastiMan Tree Puncher

ToastiMan

Posted
  • Author
Posted
  On 4/29/2023 at 3:29 PM, warjort said:

Where do you see the infinite loop?

It's impossible to help if you just keep posting incomplete information.

 

As to why running "spark gc" stops it from crashing, you would need to ask the spark developers.

I would guess something spark is doing is reducing concurrency and stopping a "race condition" bug in one of your mods?

Expand  

Well, i'm new to spark. I'm trying to gather as much information as i can. And yes, i've already went ahead and also made a post on sparks discord.

Highlighted loop: https://spark.lucko.me/FR0l0KIRki?hl=11918

warjort Reality Controller

warjort

Posted
Posted

That does show it spending 60 seconds fixing data for a minecraft Structure, e.g. village or maybe the ocean monument you mentioned earlier.

But that's out of a total of 4 minutes so I am not sure it is a loop.

 

Maybe you have a mod for an older version of minecraft that is saving its data in an old data format.

Then when you reload minecraft, it spots the old data and tries to fix it to the new format, but gets confused because it is modded data?

 

The only mod related code I see near to this method is

  Quote

com.github.alexthe668.cloudstorage.world.CSStructureRegistry$$Lambda$18883.0x0000000802d73418.load()0.04%

Expand  

That is not directly calling the data fix, but it could be triggering it?

https://www.curseforge.com/minecraft/mc-mods/alexs-cloud-storage

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

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