This is a long-lived world, spawned in 1.14 so I am leery of anything new. Within the past few days, while playing in multiplayer, no new spawns occur.
Switching off multiplayer seems to help temporarily, but nothing we do seems to help.
What's going on?
World is too large to attach. https://drive.google.com/file/d/1EODNiov7pS7SBCZJlZIZrW_S2nWp_l1_/view?usp=sharing
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Mob spawning seems to work fine here in the linked world with Multiplayer Game enabled:
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If I'm misunderstanding something, can you describe the issue in more detail?
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How many players were present in your test? I am not having issues with only one connection, but add a second and the spawning stops enitrely.
2 players. Mobs still spawn normally here.
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Do note that since your simulation distance is set to 12 chunks, mobs may spawn farther away from you.
What might be impacting my instance, then? Memory? Processor speed? Other settings? Since the game doesn't appear to be at fault, what might be causing me trouble?
The game has a global cap: if 200 spawnable-type mobs are ticked (loaded), environmental spawning does not occur in that tick. This issue is often triggered by a player being near a large flock/herd of animals that they have bred, or an automatic chicken hatcher that has been left running for a long time. Does that explain your issue?
The global cap is working as intended per BDS-5094.
Sadly, I don't think the spawn cap is the issue here. Spawns stopped when a second player logged in. Checking, literally everything is working as I would expect it to.
Add a second player, and new spawns outside of breeding, and spawners stop cold.
Is this a connectivity or hardware issue on my side? What impacts the ability to support multiplayer?
Is the second player not near any other mobs that would fill the 200 mob cap?
We find the problem gets worse if we are further apart in the world. So when we are playing together, we tend to stay very close to each other. And I don't think we have a 200 mob issue. While there are farms there, the spawns are VERY short lived (spawners, iron farm, et al.) There isn't 200 of anything.
Are there other entities included in that cap? Drops, for example.
I have heard from some players that on multiplayer servers/realms they are finding trial chambers with massive numbers of mobs spawned in them. I wonder if that could be the issue in your world. I will investigate the world save this week. Do you know the approximate coordinates where players frequently gather or travel?
Items, villagers, golems, armor stands, and minecarts do not count toward the cap. Only mobs that naturally respawn in the environment are counted.
Check 4614, -2853 – there is a new gunpowder farm built there.
If anything was going to generate mobs, it would be that, but so far nothing.
Spawners work, other farms nearby are working without any changes.
But passive spawning just ceases once another player logs in.
When I loaded the world I found well over 200 animal mobs around the base where I loaded in near 4600, -2950. I set up a scoreboard and command blocks to count them, and this is what it shows:
[media]As I explained in my comment a few days ago, having these mobs loaded blocks environmental spawning for the entire world.
I also noticed that the world simulation distance is set to 12. As a result, when you stand at the AFK spot at the new creeper farm, the entire base over to the dock on the far end remains loaded. All of those mobs get ticked, so the game does not try to spawn any more animals or monsters in the environment.
A secondary issue is that persistent monsters in hidden caves can build up over time. There are quite a few zombies, drowned, zombie pigmen, and skeletons scattered around the base that I looked at. You can find these in a creative mode copy of the world by making markers using a command like:
/execute at @e[family = monster] run fill ~ ~2 ~ ~ ~250 ~ glowstoneFollow the markers down to find the mobs.
Based on these findings I am resolving this report as a duplicate of BDS-5094 and MCPE-125111.
Please advise - if we were to move mobs elsewhere, how far would we have to separate them from each other?
Keep in mind, this world is over five years old. And this issue has just shown up. 200 for the whole world seems implausible.
There may be a feedback post on the global mob cap you could vote for, but Mojang does not consider it to be a bug based on the BDS report I linked.
With the world on sim12 all players need to be 12 x ( 16 + 1 ) = 208 blocks away from a mob for it not to count toward the cap. I would advise you to consider changing the world simulation distance to 6 or 8 to mitigate the issue. Then it’s only 112 or 144 blocks to worry about. Again, just to be clear, the issue is not mobs being near each other, it is mobs being near players.
Some servers set limits to how many mobs players can keep in flocks and herds. Another option is moving some of them to the nether or end.
Question - does name tagging remove mobs from the mob cap in Bedrock?
No, it does not.