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