Minecraft Forums

I have a pretty heavily modded server that I run from my computer. I have 32gb of ram on my computer and allocate around 8-10 to the server. Since the start of the server (and on previous servers run from my computer including vanilla), I have recieved this multiple times in the chat: Can't Keep Up! Did the system time change or is the server overloaded? The players have now started rubberbanding and it is extremely laggy. There were some corrupted chunks but I deleted those regions in the world folder and it seemed to fix itself. Here is the most recent log where it stopped about a minute after loading without me stopping it but didn't produce a crash report.

https://paste.ubuntu.com/p/NZQq5sgc85/

Any help is appreciated

I just tried allocating 16gb of ram. Although it isn't as laggy as before and hasnt crashed yet, it still lags a lot and there is still a ton of rubberbanding. The console is also still being spammed with that biomesoplenty message. Also depending on the time of day I can get anywhere from 400mbps-900mbps

After having it up for a bit, it ended up crashing and giving me this report:

https://paste.ubuntu.com/p/kR2wbHJFwM/

I changed the tick setting in server.properties to -1 so it wouldn't crash because of that, but the lag hasn't changed at all

Thanks for the advice

I just set my startup script to this: java -Xms1024m -Xmx16384m -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -jar forge-1.12.2-14.23.5.2847-universal.jar nogui
pause

but it was still lagging and giving me messages like: Can't keep up! Did the system time change, or is the server overloaded? Running 4565ms behind, skipping 91 tick(s).

For the java arguments I found, I kinda just looked up which the best ones to add were because Im honestly not sure how to match them to my server and hardware

I also tried java -Xms1024m -Xmx4096m -XX:PermSize=1024m -XX:NewRatio=3 -XX:SurvivorRatio=3 -XX:TargetSurvivorRatio=80 -XX:MaxTenuringThreshold=8 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:MaxGCPauseMillis=10 -XX:GCPauseIntervalMillis=50 -XX:MaxGCMinorPauseMillis=7 -XX:+ExplicitGCInvokesConcurrent -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=60 -XX:+BindGCTaskThreadsToCPUs -Xnoclassgc -jar forge-1.12.2-14.23.5.2847-universal.jar nogui
pause

but it was the same

if your running in linux, run the server in screen then disconect that screen and do a top command and post a screenshot