Minecraft Server thread/WARN message

1

I have a 1.12.2 modded server with a warning message being spammed in the console every few seconds or minutes.

[17:34:11] [Server thread/WARN] [minecraft/MinecraftServer]: Can’t keep up! Did the system time change, or is the server overloaded? Running 2797ms behind, skipping 55 tick(s)
[17:34:42] [Server thread/WARN] [minecraft/MinecraftServer]: Can’t keep up! Did the system time change, or is the server overloaded? Running 11680ms behind, skipping 233 tick(s)
[17:35:01] [Server thread/WARN] [minecraft/MinecraftServer]: Can’t keep up! Did the system time change, or is the server overloaded? Running 2387ms behind, skipping 47 tick(s)
[17:35:17] [Server thread/WARN] [minecraft/MinecraftServer]: Can’t keep up! Did the system time change, or is the server overloaded? Running 2730ms behind, skipping 54 tick(s)
[17:35:38] [Server thread/WARN] [minecraft/MinecraftServer]: Can’t keep up! Did the system time change, or is the server overloaded? Running 5519ms behind, skipping 110 tick(s)
[17:35:56] [Server thread/WARN] [minecraft/MinecraftServer]: Can’t keep up! Did the system time change, or is the server overloaded? Running 2163ms behind, skipping 43 tick(s)

2

This is the server noticing that there is some small lag, nothing serious as long as you don’t notice it ingame :slight_smile:

3

On top of what was already stated, if you are noticing really bad lag while getting these messages, please generate a sponge timing report by running /sponge timings report then share the link here.