How to debug lag issues?

[YesterdaysLemon]

So I'm still pretty new to running a dedicated server for me and my friends to play on, we managed to play on it for 500+ days with no lag issues, but all of a sudden everyone is getting noticeable lag; is there a way for me to see a list of items or entities to pin point what is causing the issue? Or do I have to blindly guess and start using c_removeall on what I think is the problem?

[Daniel86268]

7 hours ago, YesterdaysLemon said:

Or do I have to blindly guess and start using c_removeall on what I think is the problem

I think this would be the most reliable way to debug lag, though I can imagine that it might be a combination of various objects that causes the major lag, so you might not find "the one item" that caused it.

For example:
200 Seeds -> no lag
500 Rot -> no lag
400 Stingers -> no lag
200 Seeds, 500 Rot and 400 Stingers -> lag.

Just make sure you pull a backup of your saves before doing anything like that.