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Kai Effelsberg

Why are lag spikes common these days?

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Seems like most servers, including ours, got lots of lag spikes since some time. Not all the time, but often. Can get worse if more than 1 player is on the server, but even with only one player it happens. Tested it on certain servers. Wasn't like that some weeks ago. Maybe @Tyron can look into this. Sometimes they happen unregularly, sometimes theres 1 bigger spike every 8-10 seconds or so. Changing settings in servermagicnumbers or somewhere else doesn't seem to help as well as upgrading to better hardware.

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I'm aware of one source - the autosave system. On very large worlds, like the public test server, the autosave causes some 1-2 seconds of lag. I still need to find ways to prevent that lag. Until then you can try lowering the autosave intervall to see if that helps.

One other I am aware of is many creatures and items on the ground - on that front I've now doubled the performance for their physics simulation, that might help.

But your source of lag might not be either of those - you can narrow it down with /debug logticks 60

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The autosave interval was already set to 15 minutes, so i guess that wont be the cause. Regarding many items and creatures, i noticed the lag spikes are more common in areas that are populated with player structures, items and animals. I already suspected this as a cause. Still i find it strange that the spikes appear excactly every 8 seconds or so. Even if i remove lots of animals with /entity remove, we never get really rid of them for long. Ill run the debug command as soon as i have the time for it.

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