promotional bannermobile promotional banner

Sleepium

A performance engine for servers and clients that keeps the game exact: idle ticks put to sleep, a compiled event bus, parallel worldgen, a fast renderer with its own shaderpack support (beta).
Back to Files

Sleepium 1.1.6 for 1.21.1 (NeoForge)

File namesleepium-1.1.6-mc1.21.1-neoforge.jar
Uploader
ha7gawaha7gawa
Uploaded
Nov 7, 2026
Downloads
10
Size
1.8 MB
Mod Loaders
NeoForge
File ID
9492833
Type
R
Release
Supported game versions
  • 1.21.1

Curse Maven Snippet

NeoForge

implementation "curse.maven:sleepium-1780057:9492833"

Learn more about Curse Maven

What's new

  • Singleplayer: joining a world could take minutes next to ModernFix and mods that wait for server data while loading (reported with Advanced Loot Info + JEI in Project Infinity: 120 s instead of 30). While the game is on its loading or pause screen, the built-in server does not run its normal tick, and ModernFix replaces the server's idle wait. Those were the two moments Sleepium's network batching sent what it had collected, so packets sent then waited until the game was unpaused: ALI asked for its loot data three times and gave up. Sleepium now batches only inside the server tick, where the send at its end always comes; everything the server sends outside a tick goes out at once, as without Sleepium. Tested in Project Infinity: ALI gets its data the same second, the world opens in 38 s. On servers nearly every packet is still batched (1 278 of 1 279 in our test).
  • Settings screen: a switch marked "(part of X)" now takes you to X when clicked, instead of being a grey button that does nothing.

This mod has no additional files