Network performance issues | SpigotMC | Page 1

fresh phoenix Apr 30, 2023, 3:06 AM

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I have a core system, which does a lot of stuff. And the core itself is actually barely taking resources in the timings report. But, I was able to point down that some features are causing network lag on the players, but 0 impact on the server.

Sometimes, players will straight up get disconnected, while the server is perfectly responsive. Yes, packets are used on the core a lot.

I'm trying to figure out how I can see exactly where the "dos" is coming from

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Eventually, some things will make the server unplayable for the user, while the server is running at a average of 20tps and really stable mspt
The reason I believe so far to be the cause of this after extensive testing is this:

warm lily Apr 30, 2023, 3:06 AM

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do you know which plugin is causing this

fresh phoenix Apr 30, 2023, 3:06 AM

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https://cdn.discordapp.com/attachments/1102067501594054686/1102067901441261668/image.png

This is a cell-system. each cell can have up to 16 guards. And so far, if I place 16 guards in a cell. There are no issues at all
But when I make more than 1 cell with guards, is when my players literally start getting "dos-ed" by the server, and their connection to the server rapidly becomes terrible.

warm lily Apr 30, 2023, 3:07 AM

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damn howd youdo that

fresh phoenix Apr 30, 2023, 3:07 AM

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Once again, the server maintains a steady 20tps

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with less than 15% cpu usage

warm lily Apr 30, 2023, 3:08 AM

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do you know which plugin is causing the lag

fresh phoenix Apr 30, 2023, 3:08 AM

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It's not server lag or client fps lag

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It's network lag only for the client

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And it's the core which manages these guards. Which I made

warm lily Apr 30, 2023, 3:08 AM

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it might be the resoruce pack

fresh phoenix Apr 30, 2023, 3:08 AM

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I thought it would be

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My next thing was changing the textures

warm lily Apr 30, 2023, 3:09 AM

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could you send over the pack?

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Ican look into it

fresh phoenix Apr 30, 2023, 3:09 AM

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Why would a resource pack cause network lag only for the client tho

warm lily Apr 30, 2023, 3:09 AM

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well its pretty obviosu the guard entity has lots of small textures

fresh phoenix Apr 30, 2023, 3:10 AM

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But that's probably controlled by mythicmobs

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And itemadder, and neither of those are taking any resources

warm lily Apr 30, 2023, 3:10 AM

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i'm not sure

cosmic dune Apr 30, 2023, 6:55 PM

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fresh phoenix https://cdn.discordapp.com/attachments/1102067501594054686/1102067901441261668/i...

So what's happening is that you're blocking the network thread

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The tps will be fine since it's messured on the main thread

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If you block the network thread for too long it will cause the client to timeout and disconnect

fresh phoenix Apr 30, 2023, 6:56 PM

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Alright yeah, so far makes perfect sense, I knew it was going somewhere near there

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But how can I debug, find out where exactly to then fix it

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Never done anything this advanced with packets

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But I want to laern too

fresh phoenix Apr 30, 2023, 7:24 PM

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@cosmic dune

fresh phoenix Apr 30, 2023, 10:10 PM

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After doing a lot of debugging

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It seems like sometimes the server is reaching upwards of 200mbps of outgoing traffic, completely timing out the players

#Network performance issues