Steps to reproduce:
Client only
Start a fresh installation of Minecraft 1.10.2
Create an new world (cheats enabled) with the given seed (see below)
/tp to given coordinates
/debug start
On Server
Start a fresh setup of a minecraft server (set the seed in server.properties)
java -Xmx1024M -Xms1024M -jar minecraft_server.1.10.2.jar noguiJoin the server with a minecraft 1.10.2 client
/tp the player to the provided coordinates
/debug start
Seed: -8685038318464254472
XYZ: 220, 68, 180
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick.tickBlocks.pollingChunks' took aprox 147.039028 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick.tickBlocks' took aprox 147.260873 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick' took aprox 209.95442 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World' took aprox 211.248774 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 211.670752 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root' took aprox 212.160627 ms
[13:57:37] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 7831ms behind, skipping 156 tick(s)
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick.tickBlocks.pollingChunks' took aprox 198.400747 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick.tickBlocks' took aprox 198.647064 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick' took aprox 245.994268 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World' took aprox 246.525194 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 246.716249 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root' took aprox 247.317439 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick.tickBlocks.pollingChunks' took aprox 144.64453 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick.tickBlocks' took aprox 144.83361 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick' took aprox 156.447285 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels.New World' took aprox 159.727976 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 160.433378 ms
[13:57:37] [Server thread/WARN]: Something's taking too long! 'root' took aprox 160.802066 ms
[13:57:38] [Server thread/WARN]: Something's taking too long! 'root.levels.New World.tick' took aprox 104.464244 ms
[13:57:38] [Server thread/WARN]: Something's taking too long! 'root.levels.New World' took aprox 105.661493 ms
[13:57:38] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 106.127288 ms
[13:57:38] [Server thread/WARN]: Something's taking too long! 'root' took aprox 106.692951 ms
Comments 4
The same happens with the client without a server and 8 GB of RAM.
I can run the server with different parameters for RAM etc. and it will still have the same issue.
Also the server only uses around 33% of the available RAM.
Here's ps aux for the current server in another biome. When I visit the jungle biome it suddenly goes up to 100% on one of the threads and stays there until it crashes due to a tick taking 60 seconds.
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
lucom 13398 18.4 33.3 2060732 684040 pts/1 Sl+ Sep06 117:12 java -Xmx1536M -Xincgc -jar minecraft_server.1.10.2.jar nogui
Please attach the server command line.