Server freezing

[JorisvD01]

Server Implementation

Paper

Server Version

1.21.1

Describe the bug

Plotsquared is installed on a server, currently 8GB of ram, and experiences a lot of freezing / laggspikes (every 20 seconds roughly) and gives an error in console (log pasted later).

This only started happening when multiple people came on the server and started creating plots. There are currently 719 plots created in total

To Reproduce

1. Create a server with plotsquared
2. Have multiple people play on it for some time
3. We experience these freezes / laggspikes

Expected behaviour

Reduced lagg compared to the current situation

Screenshots / Videos

No response

Error log (if applicable)

https://mclo.gs/HJptU7I

Plot Debugpaste

https://athion.net/ISPaster/paste/view/30c0b3bbaffa4384baee63401fe9374a

PlotSquared Version

7.3.11-Premium

Checklist

• I have included a Plot debugpaste.
• I am using the newest build from https://www.spigotmc.org/resources/77506/ and the issue still persists.

Anything else?

Sorry if this might be related to something else, but I can't find anything related to it!

[SirYwell]

This could be a malicious item stack or just many full chests etc. You can try to also use spark to better see where in the code the time is spent.

[JorisvD01]

This could be a malicious item stack or just many full chests etc. You can try to also use spark to better see where in the code the time is spent.

We checked in spark and it does indeed spend a lot of its resources in unloading chunks, related to chests and item stacks. Any pointers on how I could find out the source of this the easiest way?

[SirYwell]

Timings might help, or the vanilla /perf command