CPU OverLoad?

[JamesM92]

Describe the problem

Minecraft Server Keeps crashing when 4 or more players login.

I have a quad core processor, and telling the container to use 4 cpu's but still says its using 170+% however the computer says its only over at 50% cpu load.

Container definition

#https://github.com/itzg/docker-minecraft-server
version: "2"

networks:
frontend:
external:
name: FrontEnd

volumes:
data:
driver: local
driver_opts:
o: bind
type: none
device: /DockerDataMnt/Minecraft/_data/data

mods:
driver: local
driver_opts:
o: bind
type: none
device: /DockerDataMnt/Minecraft/_data/mods/

services:
mc:
image: itzg/minecraft-server:java17
container_name: 90_MineCraft
restart: unless-stopped

cpus: 4
ports:
  - 25565:25565
  - 24455:24455/udp #port for proximity chat mod default is 24454 but since red used it first alternate is used
  #to specify this new port navigate to [data directory}/data/world/serverconfig/voicechat-server.toml and change the port to the new port
environment:
  EULA: "TRUE"
  TYPE: "FORGE"
  #MEMORY: "4G"
  MAX_MEMORY: "8G"
  GUI: "FALSE"
  STOP_SERVER_ANNOUNCE_DELAY: "30"
  VERSION: 1.18.2
  VIEW_DISTANCE: "18"
  DEBUG: "TRUE"
  DEBUG_MEMORY: "TRUE"
volumes:
  - data:/data/
  - mods:/mods/
networks:
  - frontend

#this will create a new local colume named "minecraft_data" if you named this stack "minecraft"
#allow it to first boot to completeion then stop the container.
#then copy the data for the server you want into the local directory /var/lib/docker/volumes/minecraft_data/data
#make sure you set the folder permissions so the system can access the dolfers and sub folders
#once it is setup how you want, you can go and start the container once again.

Container logs

read/INFO] [voicechat/]: Successfully authenticated player xxxxxxxxxxxxxx
[28Aug2022 01:41:37.140] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 2010ms or 40 ticks behind
[28Aug2022 01:41:57.069] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 3840ms or 76 ticks behind
[28Aug2022 01:42:29.161] [Server thread/INFO] [net.minecraft.server.network.ServerGamePacketListenerImpl/]: Tookys lost connection: Disconnected
[28Aug2022 01:42:29.162] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: Tookys left the game
[28Aug2022 01:42:29.163] [Server thread/INFO] [voicechat/]: Disconnecting client Tookys
[28Aug2022 01:42:49.086] [User Authenticator #17/INFO] [net.minecraft.server.network.ServerLoginPacketListenerImpl/]: UUID of player Tookys is 70d7aca4-8c0c-44ce-b636-64a8bb9231d1
[28Aug2022 01:42:49.155] [Server thread/INFO] [net.minecraftforge.common.AdvancementLoadFix/]: Using new advancement loading for net.minecraft.server.PlayerAdvancements@40b82d94
[28Aug2022 01:42:49.158] [Server thread/INFO] [net.minecraft.server.players.PlayerList/]: Tookys[/192.168.0.1:63041] logged in with entity id 585817 at (-403.5, 49.7125, -254.50999999046326)
[28Aug2022 01:42:49.161] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: Tookys joined the game
[28Aug2022 01:42:50.498] [Server thread/INFO] [voicechat/]: Received secret request of Tookys (14)
[28Aug2022 01:42:50.498] [Server thread/INFO] [voicechat/]: Sent secret to Tookys
[28Aug2022 01:42:50.615] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Successfully authenticated player xxxxxxxxxxxxxxxxxxxxxx
[28Aug2022 01:43:40.838] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 2009ms or 40 ticks behind
[28Aug2022 01:45:09.491] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 2011ms or 40 ticks behind
[28Aug2022 01:46:06.635] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 2006ms or 40 ticks behind
[28Aug2022 01:46:25.967] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Player xxxxxxxxxxxx timed out
[28Aug2022 01:46:25.968] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Reconnecting player Tookys
[28Aug2022 01:46:25.968] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Sent secret to Tookys
[28Aug2022 01:46:33.297] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Successfully authenticated player 70d7aca4-8c0c-44ce-b636-64a8bb9231d1
[28Aug2022 01:46:44.563] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: DontTrustBurgers has made the advancement [Stone Age]
[28Aug2022 01:46:54.131] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Player 70d7aca4-8c0c-44ce-b636-64a8bb9231d1 timed out
[28Aug2022 01:46:54.131] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Reconnecting player Tookys
[28Aug2022 01:46:54.131] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Sent secret to Tookys
[28Aug2022 01:47:00.971] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Successfully authenticated player 70d7aca4-8c0c-44ce-b636-64a8bb9231d1
[28Aug2022 01:47:46.431] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Player 70d7aca4-8c0c-44ce-b636-64a8bb9231d1 timed out
[28Aug2022 01:47:46.431] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Reconnecting player Tookys
[28Aug2022 01:47:46.431] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Sent secret to Tookys
[28Aug2022 01:47:53.209] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Successfully authenticated player 70d7aca4-8c0c-44ce-b636-64a8bb9231d1
[28Aug2022 01:48:07.566] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Player 70d7aca4-8c0c-44ce-b636-64a8bb9231d1 timed out
[28Aug2022 01:48:07.566] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Reconnecting player Tookys
[28Aug2022 01:48:07.566] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Sent secret to Tookys
[28Aug2022 01:48:13.955] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Successfully authenticated player 70d7aca4-8c0c-44ce-b636-64a8bb9231d1
[28Aug2022 01:48:14.723] [Server thread/INFO] [net.minecraft.server.network.ServerGamePacketListenerImpl/]: Tookys lost connection: Disconnected
[28Aug2022 01:48:14.723] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: Tookys left the game
[28Aug2022 01:48:14.724] [Server thread/INFO] [voicechat/]: Disconnecting client Tookys
[28Aug2022 01:56:50.827] [User Authenticator #18/INFO] [net.minecraft.server.network.ServerLoginPacketListenerImpl/]: UUID of player Tookys is 70d7aca4-8c0c-44ce-b636-64a8bb9231d1
[28Aug2022 01:56:50.905] [Server thread/INFO] [net.minecraftforge.common.AdvancementLoadFix/]: Using new advancement loading for net.minecraft.server.PlayerAdvancements@49c38df1
[28Aug2022 01:56:50.908] [Server thread/INFO] [net.minecraft.server.players.PlayerList/]: Tookys[/192.168.0.1:63413] logged in with entity id 594545 at (-403.5, 49.7125, -254.50999999046326)
[28Aug2022 01:56:50.911] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: Tookys joined the game
[28Aug2022 01:56:59.631] [Server thread/INFO] [voicechat/]: Received secret request of Tookys (14)
[28Aug2022 01:56:59.631] [Server thread/INFO] [voicechat/]: Sent secret to Tookys
[28Aug2022 01:57:01.957] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 2077ms or 41 ticks behind
[28Aug2022 01:57:03.715] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Successfully authenticated player xxxxxxxxxxxx
[28Aug2022 02:11:38.420] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: [Tookys: Added MintyCitKat to the whitelist]
[28Aug2022 02:12:04.843] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: [Tookys: Added RandomEnthusiast to the whitelist]
[28Aug2022 02:12:48.307] [User Authenticator #19/INFO] [net.minecraft.server.network.ServerLoginPacketListenerImpl/]: UUID of player MintyCitKat is xxxxxxxxxxxxx
[28Aug2022 02:12:48.357] [Server thread/INFO] [net.minecraftforge.common.AdvancementLoadFix/]: Using new advancement loading for net.minecraft.server.PlayerAdvancements@1e543a58
[28Aug2022 02:12:48.359] [Server thread/INFO] [net.minecraft.server.players.PlayerList/]: MintyCitKat[/xxxxxxxxxxx] logged in with entity id 610952 at (226.5, 74.0, -97.5)
[28Aug2022 02:12:48.360] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: MintyCitKat joined the game
[28Aug2022 02:14:11.270] [Server thread/WARN] [net.minecraft.server.level.ServerPlayerGameMode/]: Mismatch in destroy block pos: BlockPos{x=0, y=0, z=0} BlockPos{x=233, y=75, z=-102}
[28Aug2022 02:14:12.455] [Server thread/WARN] [net.minecraft.server.level.ServerPlayerGameMode/]: Mismatch in destroy block pos: BlockPos{x=0, y=0, z=0} BlockPos{x=234, y=75, z=-102}
[28Aug2022 02:14:15.304] [Server thread/WARN] [net.minecraft.server.level.ServerPlayerGameMode/]: Mismatch in destroy block pos: BlockPos{x=0, y=0, z=0} BlockPos{x=234, y=75, z=-102}
[28Aug2022 02:14:24.053] [Server thread/WARN] [net.minecraft.server.level.ServerPlayerGameMode/]: Mismatch in destroy block pos: BlockPos{x=0, y=0, z=0} BlockPos{x=234, y=73, z=-101}
[28Aug2022 02:14:26.243] [Server thread/WARN] [net.minecraft.server.level.ServerPlayerGameMode/]: Mismatch in destroy block pos: BlockPos{x=0, y=0, z=0} BlockPos{x=234, y=74, z=-102}
[28Aug2022 02:14:29.958] [Server thread/WARN] [net.minecraft.server.level.ServerPlayerGameMode/]: Mismatch in destroy block pos: BlockPos{x=0, y=0, z=0} BlockPos{x=234, y=75, z=-102}
[28Aug2022 02:14:32.579] [User Authenticator #20/INFO] [net.minecraft.server.network.ServerLoginPacketListenerImpl/]: UUID of player RandomEnthusiast is ffa51f2a-be8e-49cb-a0fd-8641bd1183f1
[28Aug2022 02:14:32.653] [Server thread/INFO] [net.minecraftforge.common.AdvancementLoadFix/]: Using new advancement loading for net.minecraft.server.PlayerAdvancements@11f3471b
[28Aug2022 02:14:32.654] [Server thread/INFO] [net.minecraft.server.players.PlayerList/]: RandomEnthusiast[/109.186.141.102:56015] logged in with entity id 612141 at (239.5, 74.0, -99.5)
[28Aug2022 02:14:32.655] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: RandomEnthusiast joined the game
[28Aug2022 02:14:50.056] [Server thread/WARN] [net.minecraft.server.level.ServerPlayerGameMode/]: Mismatch in destroy block pos: BlockPos{x=0, y=0, z=0} BlockPos{x=240, y=73, z=-100}
[28Aug2022 02:14:51.210] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: Bienvenue everyone! I hope you have fun here ^_^
[28Aug2022 02:14:57.275] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Player xxxxxxxxxxxdeb timed out
[28Aug2022 02:14:57.275] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Reconnecting player az4r0th
[28Aug2022 02:14:57.275] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Sent secret to az4r0th
[28Aug2022 02:14:57.275] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Player 70d7aca4-8c0c-44ce-b636-64a8bb9231d1 timed out
[28Aug2022 02:14:57.275] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Reconnecting player Tookys
[28Aug2022 02:14:57.275] [VoiceChatPacketProcessingThread/INFO] [voicechat/]: Sent secret to Tookys
[28Aug2022 02:15:02.908] [Server thread/INFO] [net.minecraft.server.network.ServerGamePacketListenerImpl/]: DontTrustBurgers lost connection: Timed out
[28Aug2022 02:15:02.908] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: DontTrustBurgers left the game
[28Aug2022 02:15:02.908] [Server thread/INFO] [voicechat/]: Disconnecting client DontTrustBurgers
[28Aug2022 02:15:03.747] [Server thread/INFO] [net.minecraft.server.network.ServerGamePacketListenerImpl/]: MintyCitKat lost connection: Timed out
[28Aug2022 02:15:03.747] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: MintyCitKat left the game
[28Aug2022 02:15:03.747] [Server thread/INFO] [voicechat/]: Disconnecting client MintyCitKat
[28Aug2022 02:15:16.804] [Server thread/INFO] [net.minecraft.server.network.ServerGamePacketListenerImpl/]: az4r0th lost connection: Timed out
[28Aug2022 02:15:16.804] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: az4r0th left the game
[28Aug2022 02:15:16.804] [Server thread/INFO] [voicechat/]: Disconnecting client az4r0th
[28Aug2022 02:15:17.398] [Server thread/INFO] [net.minecraft.server.network.ServerGamePacketListenerImpl/]: Tookys lost connection: Timed out
[28Aug2022 02:15:17.398] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: Tookys left the game
[28Aug2022 02:15:17.398] [Server thread/INFO] [voicechat/]: Disconnecting client Tookys
[28Aug2022 02:15:22.546] [Server thread/INFO] [net.minecraft.server.network.ServerGamePacketListenerImpl/]: RandomEnthusiast lost connection: Timed out
[28Aug2022 02:15:22.547] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: RandomEnthusiast left the game
[28Aug2022 02:15:22.547] [Server thread/INFO] [voicechat/]: Disconnecting client RandomEnthusiast
[28Aug2022 02:15:34.696] [Server thread/INFO] [net.minecraft.server.network.ServerLoginPacketListenerImpl/]: com.mojang.authlib.GameProfile@5d9c3ccc[id=,name=az4r0th,properties={},legacy=false] (/192.168.0.1:55336) lost connection: Disconnected

[itzg]

I can only address container automation issues, not performance/stability of the server itself. You will need to contact the server maintainers for that.

I'll convert this to a discussion so that others can provide advice.

[JamesM92]

Kk, this is on a self hosted server.

The cpu is a i5-6500 quad core intell processor.

It has 16gb of ram, and looks like its using about 6.6gb while running.

I read the minecraft server app can only run on 1 core so getting more cores doesn't help it.

Is there something I need to do to help it run mode stable?

[JamesM92]

For anybody interested, It seems this was related to having to many golems runnign around my spawn chunks.

I had made an old iron farm in my spawn chunks, which broke and the golemns just wondered around.

Somehow these golems kept eating up the CPU, enough that adding a few players would push it past the limit causing it to break down.

I moved my /setworldspawn to a new location without a army of golems and now things seem to be working fine. Still needing to get more people online to be able to test if the fix is real or note.