Very Many Players (Fabric)

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

Ran on Kiln's test stand (2026-11-04): it stopped at com.ibm.asyncutil.util.Combinators, a class from a jar nested inside the mod; Kiln does not unpack nested jars yet.

What it needs from Kiln

an access widener
Mixin
net.fabricmc.loader.api.ModContainer
net.fabricmc.loader.api.Version
net.fabricmc.loader.api.metadata.CustomValue
net.fabricmc.loader.api.metadata.CustomValue.CvArray
net.fabricmc.loader.api.metadata.CustomValue.CvType
net.fabricmc.loader.api.metadata.ModMetadata
net.minecraft.core.SectionPos
net.minecraft.server.level.ChunkMap
net.minecraft.server.level.ChunkMap.DistanceManager
net.minecraft.server.level.ChunkMap.TrackedEntity
net.minecraft.world.level.ChunkPos
org.apache.logging.log4j.LogManager
org.apache.logging.log4j.Logger
Long2ObjectMap.Entry.getValue()
LongIterator.hasNext()
ObjectListIterator.hasNext()
ObjectListIterator.next()
Reference2LongMap.Entry.getKey()
FabricLoader.getAllMods()
FabricLoader.isModLoaded()
ServerLevel.players()
Entity.position()

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

A Fabric mod designed to improve server performance at high playercounts.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file vmp-fabric-mc26.3-0.2.0+beta.7.238-all.jar. The scan reads the mod's classes; it does not run them.

Reports from players

No reports from players yet.

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