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