Mob Limits

Limits on Large Groups of Mobs.

To optimize server performance, large clusters of mobs are regulated.
Entities are not limited per chunk but are limited by their group (see below).
Groups of mobs that exceed the limit are periodically identified and culled,
exempting those with special characteristics like being a custom mob or tamed.
When a mob is removed, you will see a smoke effect.

For example, if the limit is 10 mobs within 5 blocks, it will group all mobs in the same group
that are less than 5 blocks from each-other into one large group and remove the excess mobs.

If you wanted to have more than 10 mobs in this example, you need to have at least 5 blocks
between your groups to prevent them being counted as one group.

Mob limits:
Armorstands (Armor Stand): 30 within a 10 block radius
Xporb (Experience Orb): 50 within a 3 block radius
Items (Item): 500 within a 2 block radius
Hanging (Painting, Glow Item Frame, Item Frame, Leash Knot): 2000 within a 2 block radius
Projectiles (Fishing Bobber, Llama Spit, Breeze Wind Charge, Ender Pearl, Wind Charge, Dragon Fireball, Lingering Potion, Shulker Bullet, Trident, Experience Bottle, Small Fireball, Snowball, Spectral Arrow, Egg, Fireball, Firework Rocket, Wither Skull, Arrow, Splash Potion): 35 within a 5 block radius
Bosses (Warden, Wither): 5 within a 15 block radius
Laggyvillagers (Wandering Trader, Villager, Pillager): 18 within a 5 block radius
Farmable (Iron Golem, Zombie Horse, Skeleton Horse, Shulker, Snow Golem, Donkey, Happy Ghast, Slime, Sheep, Camel Husk, Nautilus, Pig, Bee, Frog, Trader Llama, Zombie Nautilus, Wolf, Hoglin, Rabbit, Goat, Magma Cube, Turtle, Fox, Strider, Copper Golem, Polar Bear, Sniffer, Cat, Mooshroom, Chicken, Llama, Mule, Panda, Armadillo, Cow, Ocelot, Horse, Parrot, Axolotl, Camel): 15 within a 5 block radius
Monsters (Guardian, Drowned, Vindicator, Bogged, Silverfish, Spider, Zoglin, Zombie, Creaking, Piglin Brute, Breeze, Elder Guardian, Giant, Piglin, Zombified Piglin, Witch, Ravager, Parched, Illusioner, Vex, Stray, Evoker, Blaze, Endermite, Skeleton, Wither Skeleton, Enderman, Husk, Zombie Villager, Cave Spider, Creeper): 15 within a 5 block radius
Watermobs (Pufferfish, Salmon, Cod, Squid, Tadpole, Dolphin, Tropical Fish, Glow Squid): 10 within a 5 block radius
Mobs (Ghast, Bat, Allay, Phantom): 30 within a 5 block radius
Fallingblock (Falling Block): 30 within a 5 block radius
Explosive (End Crystal, Tnt): 30 within a 5 block radius
Vehicles (Birch Boat, Jungle Boat, Jungle Chest Boat, Spruce Boat, Furnace Minecart, Mangrove Chest Boat, Spawner Minecart, Command Block Minecart, Acacia Boat, Bamboo Chest Raft, Oak Boat, Oak Chest Boat, Mangrove Boat, Birch Chest Boat, Minecart, Pale Oak Chest Boat, Acacia Chest Boat, Dark Oak Boat, Pale Oak Boat, Chest Minecart, Hopper Minecart, Dark Oak Chest Boat, Spruce Chest Boat, Tnt Minecart, Cherry Chest Boat, Bamboo Raft, Cherry Boat): 40 within a 8 block radius
Uncategorized (Item Display, Area Effect Cloud, Marker, Text Display, Lightning Bolt, Ominous Item Spawner, Interaction, Block Display, Mannequin, Evoker Fangs, Eye Of Ender): 150 within a 7 block radius