# SleepyCPU<\/p>\n
Reduce server CPU usage automatically when your Minecraft server is empty.<\/p>\n
SleepyCPU detects when no players are online and temporarily slows down server activity. It optionally unloads chunks and nudges the JVM to free memory. As soon as a player joins, normal operation resumes.<\/p>\n
## Features
\n– Automatically enters a low-CPU mode when the server is empty
\n– Configurable delay between server ticks while idle (sleepTicks)
\n– Optional chunk unloading (unloadChunks) with save-on-unload toggle
\n– Configurable cleanup interval to control how often chunk unload + GC occurs
\n– Lightweight: no dependencies and single permission node<\/p>\n
## How it works
\nWhen the player count reaches 0, SleepyCPU:
\n1. Saves all worlds safely using region-aware scheduling
\n2. Sleeps between tick cycles by a configurable number of ticks
\n3. Periodically (configurable interval) unloads chunks per world and triggers a GC hint<\/p>\n
When a player joins, counters reset and the server resumes normal throughput.<\/p>\n
## Configuration
\n– Location: server-root\/sleepycpu.yml
\n– Keys:
\n – settings.enabled: Master switch for low-CPU mode (true\/false)
\n – settings.sleepTicks: Delay between idle cycles in ticks (1 tick = 50ms)
\n – settings.unloadChunks: Unload chunks while idle (true\/false)
\n – settings.saveChunksOnUnload: Save chunks when unloading (true\/false)
\n – settings.cleanupIntervalTicks: Idle cycles between chunk unload + GC
\n– After editing, run \/sleepycpu reload or restart the server<\/p>\n
## Commands Alias: \/scpu<\/p>\n ## Permissions Reduces server cpu usage when the server is empty by introducing intentional delays<\/p>\n","protected":false},"featured_media":143076,"template":"","meta":{"_minecraft_slug":"sleepycpu","_minecraft_project_id":"BJmsYTVT","_minecraft_author":"BloodRed","_minecraft_license":"LicenseRef-All-Rights-Reserved","_minecraft_downloads":346,"_minecraft_follows":6,"_minecraft_client_side":"unsupported","_minecraft_server_side":"required","_minecraft_storage_type":"zip","_minecraft_archive_name":"sleepycpu.zip","_minecraft_size_bytes":14932,"_minecraft_version_count":1,"_minecraft_updated_at":"2026-05-16T11:21:40.974753Z","_minecraft_date_created":"2025-08-12T02:42:16.200009Z","_minecraft_date_modified":"2025-08-10T14:09:34.364524Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/sleepycpu","_minecraft_icon_attachment_id":143076,"_minecraft_imported_at":"2026-06-08T12:32:39+00:00","_minecraft_import_hash":"ae634ca7b14d2b1023d4e772a1695ca4","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[125,127,128],"mod_loader":[131,132,133],"minecraft_version":[36,60,93,94,101,102,62,37,73,74,38,78,79,80,81],"class_list":["post-143075","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-folia","mod_category-paper","mod_category-purpur","mod_loader-folia","mod_loader-paper","mod_loader-purpur","minecraft_version-1-20-1","minecraft_version-1-20-2","minecraft_version-1-20-3","minecraft_version-1-20-4","minecraft_version-1-20-5","minecraft_version-1-20-6","minecraft_version-1-21","minecraft_version-1-21-1","minecraft_version-1-21-2","minecraft_version-1-21-3","minecraft_version-1-21-4","minecraft_version-1-21-5","minecraft_version-1-21-6","minecraft_version-1-21-7","minecraft_version-1-21-8"],"yoast_head":"\n
\n– \/sleepycpu help \u2014 Show command info
\n– \/sleepycpu toggle \u2014 Enable\/disable low-CPU mode
\n– \/sleepycpu status \u2014 Display current status and settings
\n– \/sleepycpu reload \u2014 Reload configuration from disk
\n– \/sleepycpu delay
\n– \/sleepycpu cleanupinterval
\n– \/sleepycpu unloadchunks
\n– \/sleepycpu saveonunload
\n– sleepycpu.admin \u2014 Access to all SleepyCPU commands (default: OP)<\/p>\n","protected":false},"excerpt":{"rendered":"