Mojira Archive
BDS-14921

Mobs in Water Pools at Surface not Despawning

Mobs that are stuck in pools of water are not despawning when leaving the area by more than 128 blocks, via the nether or going offline.   Increasing number of mobs are spawning in the same location causing the mob cap to be hit and significantly impacting performance on Linux dedicated server (50% CPU load).   X-Box Series X client has also crashed when entering the area where mobs are not despawning.

Identified through looking for entities causing performance / lag.   Usage of x-ray texture pack to locate the entities and kill of all entities resolves the issue, but cannot perform on server without cheat enabled.

Not yet able to identify whether it's related to mobs that cannot pathfind out of water which are open to the surface, or related to helmet wearing mobs.    All seem to be within 2-3 deep of the surface so are not killed by sun light.   Further testing needed

 

Example of mobs building up in one area

Example of another group of mobs building up in the area

 

 

Environment

ubuntu 20.04 Standard B2s, x2 vCPUs, 4GB
view-distance=12
tick-distance=6

Attachments1

Comments2

Hi

Could you please provide more details how to reproduce this issue? What resource pack did you use to x-ray through to see entities?

This ticket will automatically reopen when you reply.

Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.

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History6

Dave Cooper
Dave Cooper

Changed description:

Mobs that are stuck in pools of water are not despawning when leaving the area by more than 128 blocks, via the nether or going offline.   Increasing number of mobs are spawning in the same location causing the mob cap to be hit and significantly impacting performance on Linux dedicated server (50% CPU load).   X-Box Series X client has also crashed when entering the area where mobs are not despawning.

0

Identified through looking for entities causing performance / lag.   Usage of x-ray texture pack to locate the entities and kill of all entities resolves the issue, but cannot perform on server without cheat enabled.

0

Not yet able to identify whether it's related to mobs that cannot pathfind out of water which are open to the surface, or related to helmet wearing mobs.    All seem to be within 2-3 deep of the surface so are not killed by sun light.   Further testing needed

0

 

0

Example of mobs building up in one area

0

0

Example of another group of mobs building up in the area

0

0

 

0

 

Mobs that are stuck in pools of water are not despawning when leaving the area by more than 128 blocks, via the nether or going offline.   Increasing number of mobs are spawning in the same location causing the mob cap to be hit and significantly impacting performance on Linux dedicated server (50% CPU load).   X-Box Series X client has also crashed when entering the area where mobs are not despawning.

0

Identified through looking for entities causing performance / lag.   Usage of x-ray texture pack to locate the entities and kill of all entities resolves the issue, but cannot perform on server without cheat enabled.

0

Not yet able to identify whether it's related to mobs that cannot pathfind out of water which are open to the surface, or related to helmet wearing mobs.    All seem to be within 2-3 deep of the surface so are not killed by sun light.   Further testing needed

0

 

0

Example of mobs building up in one area

0

0

Example of another group of mobs building up in the area

0

0

 

0

 

Maciej Piornik
[MCQA] Kinga Izdebska
[MCQA] Kinga Izdebska

Resolution: UnresolvedIncomplete

Incomplete
Dave Cooper
0
0
Unconfirmed
1.17.11 Hotfix