My server generally runs fine until a player enters a Nether portal, after which the lag increases (or maybe tick rate drops?) significantly. Mobs and players become extremely choppy and block updates (e.g., mining/harvesting) take excessively long to process. This lag persists in the overworld even when players return from the Nether. All clients are on modern Windows 10 PCs and run fine before entering the Nether, so it's not likely a client problem. The only way to clear the lag seems to be to restart the server.
Comments 21
I think I need to further profile CPU/memory as users grow as well. Testing with single player on server, it's not happening.
I added memory and the server is still lagging. CPU usage is <25% and memory usage on the host is less than 75% (swap partition space isn't even touched yet), and I'm still getting the lag.
We have the same problem. When ever someone is entering the Nether the server starts lagging like crazy. It does how ever goes away when people leave the Nether.
We have the same problem. When ever someone is entering the Nether the server starts lagging like crazy. It does how ever goes away when people leave the Nether.
I went in and /kill'd all entities, upon return new mobs had spawned in and the problem is indeed gone for now.
Thanks!
I went in and /kill'd all entities, upon return new mobs had spawned in and the problem is indeed gone for now.
Thanks!
Also, server CPU normally runs around 20-25%, but spikes to 100% when the Nether is entered, then drops again to normal after "generating terrain" completes on the client.