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# OPTServer 1.1.0-beta.8 — Less Wasted Work. More Room to Play. Minecraft 1.20.1 · Forge 47.x · Java 17 ### "Note: All benchmarks above were recorded on my aging potato HDD. On a modern SSD/NVMe, the performance gains and streaming speeds will be even more dramatic." SERVER-ONLY READY (100% VANILLA CLIENT COMPATIBLE) — INSTALL THE SAME JAR ON THE CLIENT TO UNLOCK ZSTD & INTERPOLATION FOR MAXIMUM PERFORMANCE!  ## 2. Component Microbenchmarks & Traffic Reduction Native Server-Side Compression (libdeflate 1.25): Cuts chunk-packet encoding time by ~80% compared to standard direct-buffer Deflater (~455 µs -> ~89 µs/packet). Controlled 2-Way Codec Benchmark (Zstd Level 3): Reduces combined encode + decode time by ~62% compared to libdeflate + vanilla decoding (~146.7 µs -> ~55.3 µs), with only ~1.5% larger frames. Distance-Aware Entity Snapshots (~60.9% Reduction): Replaced 23,692 relative movement-packet attempts with 9,263 compact absolute snapshots during an 80.6s session (~294/s -> ~115/s), paired with up to 12-tick client interpolation. High-Speed Flight Corridor (flightchunks — ON by default): Activates automatically at  22 blocks/s (deactivates below 13 blocks/s, maintaining a 4-chunk safety radius and a ~7-chunk wide forward corridor. Suppressed 19,927 redundant chunk-forget requests during a ~50s flight session (~397 unnecessary requests avoided/s). ## 3. Core Technical Features Experimental Zombie Flock Navigation: Groups up to 128 eligible adult zombies pursuing the same target; only the 3 nearest leaders run full vanilla A^* pathfinding while followers reuse validated path segments or tail-follow, with automatic vanilla A^* fallback. Network & Memory Housekeeping: Direct-buffer compression paths eliminate packet-sized Java heap copies; selected network flushes are batched with a 2 ms delay / 128-request cap; automatic local XP-orb merging preserves Mending and pickup behavior. ## 4. Platform Support (Windows vs. Linux) Windows (64-bit / x86_64): Full native hardware-accelerated compression is bundled out-of-the-box (libdeflate 1.25 for Server-Only, and auto-negotiated Zstd level 3 for Server + Client). Linux & Other Platforms: Fully compatible with all core optimizations (Automatic Flight Corridors, Zombie Flock AI, Local XP Merging, 2ms/128-req Flush Batching, and Server + Client Distance-Aware Motion Snapshots/Interpolation). For packet compression, non-Windows platforms automatically fall back to Minecraft's built-in default compression (zlib/Deflater) paired with direct-buffer memory paths to avoid heap allocations.

# Improved: - Villager AI: Optimized pathfinding/AI logic to reduce RAM usage. - Projectile Cleanup: Any projectile shot by any mob immediately despawns upon hitting the ground. # Added: Command: /opt entitylim <N> (Default N = 40). Named projectiles/thrown items (e.g., custom Tridents) are excluded from being despawned. # How it works: - Limits active projectiles shot by a player to N. Once exceeded, the oldest projectile despawns. - Limits active projectiles shot by player-placed dispenser/machine blocks to a separate cap of N. - The limits are independent, allowing up to 2N total active projectiles per player across both sources.

# Improved: Villager AI: Optimized pathfinding/AI logic to reduce RAM usage. Projectile Cleanup: Any projectile shot by any mob immediately despawns upon hitting the ground. # Added: Command: /opt entitylim <N> (Default N = 40). Named projectiles/thrown items (e.g., custom Tridents) are excluded from being despawned. # How it works: Limits active projectiles shot by a player to N. Once exceeded, the oldest projectile despawns. Limits active projectiles shot by player-placed dispenser/machine blocks to a separate cap of N. The limits are independent, allowing up to 2N total active projectiles per player across both sources.

**Improved:** * **Villager AI:** Optimized pathfinding/AI logic to reduce RAM usage. * **Projectile Cleanup:** Any projectile shot by any mob immediately despawns upon hitting the ground. **Added:** * **Command:** `/opt entitylim <N>` (Default N = 40). * Named projectiles/thrown items (e.g., custom Tridents) are excluded from being despawned. **How it works:** * Limits active projectiles shot by a player to N. Once exceeded, the oldest projectile despawns. * Limits active projectiles shot by player-placed dispenser/machine blocks to a separate cap of N. * The limits are independent, allowing up to $2N$ total active projectiles per player across both sources.

NeoForge 1.21.1

# 📝 Easy Server OPT (ESO) - Changelog This update focuses exclusively on refactoring the underlying Event Handling architecture to strictly follow Forge Mod Loader standards. All server optimization features and logic remain 100% unchanged. ## 🔄 Refactoring Changes Automated Event Registration: Replaced manual MinecraftForge.EVENT_BUS.register() calls with Forge's @Mod.EventBusSubscriber class-level annotations across the mod. Static Event Methods: Converted all @SubscribeEvent methods to public static to comply with the automatic subscriber requirement. Config Separation: Moved all configuration loading events (Load/Reload) out of the main mod class and into ModConfig.java, utilizing the MOD event bus for cleaner architecture and separation of concerns. ## 🚀 Features Status All optimization mechanics continue to work flawlessly in the background exactly as before: ✅ TPS-based auto-optimization (Runs silently every 2 seconds). ✅ Aggressive XP merging and chunk mob limits (40 max). ✅ Server sleep/tick-pause on empty. ✅ Smart Villager AI freezing. ✅ All /opt commands.

# OPTServer v1.09 - Release Changelog A lightweight, powerful server-side optimization mod for Minecraft Forge 1.20.1. ## What's New in v1.09 ### 1. Auto "Anti-Tick-Slip" Automatic World Time Freeze: When the server becomes empty, the mod persistently saves the game time (gameTime/dayTime) and the real-world logout timestamp. Auto-Restoration: Upon player login, if the server was empty for >= 5 minutes, the mod automatically rolls back/restores the game time and day time to the exact moment of logout. Safety Window: If players reconnect in under 5 minutes (quick crashes or restarts), time proceeds normally to prevent rollback issues. ### 2. Built-in Lag Profiler (/opt find) Instantly scan loaded chunks across all dimensions. Displays the Top 3 Chunks with the highest entity count (dimension, chunk coordinates, and exact block coordinates) so you can hunt down mob farms or lag spots. Displays the Top 5 most numerous entity types globally. ### 3. Dynamic Mob Capper (/opt moblim <limit>) Dynamically limit the maximum number of Mob entities allowed inside any single chunk. New spawns in overloaded chunks are automatically canceled (ignores custom-named mobs/pets so your named entities are always safe). Adjusted in-game via /opt moblim <number>. ### 4. Smart Villager AI Optimizer Automatically freezes the pathfinding and brain tick processing (NoAi = true) of stationary Villagers (speed ~0) to eliminate trading hall lag. Seamless Trading: Automatically restores full AI (NoAi = false) for 60 seconds whenever a player interacts (right-clicks) with them, allowing smooth trades, restocking, and job updates before refreezing them. ### 5. Critical Bug Fix Fixed Inactive Event Loop: Resolved a major issue where the automatic dynamic optimizer (onServerTick and onServerStarting) never executed because the CommandsHandler class lacked the @Mod.EventBusSubscriber annotation. Auto-mode now works perfectly on server startup!

Auto Mode (Default): Automatically runs on startup. Dynamically monitors TPS and adjusts settings — no manual setup required. Manual Commands (Optional): All existing commands (/opt dis, /opt clear, etc.) still work for manual control if needed. XP Infinite Merge: /opt xp <on/off> to toggle high-performance XP stacking. Simplified Config: No tuning or logic options anymore. Config file now only contains a pre-filled default trash item list — works out of the box. Advanced users may optionally customize or extend the list if desired.

Simplify Commands /opt dis on/off /opt weather on/off /opt daylight on/off /opt randomtick on/off /opt mobai on/off /opt clear

⚠️ Important Migration Note for v2.0 If you are upgrading from a previous version, please follow these steps: Reset Config: It is highly recommended to delete your old configuration files in config name: TickPause... Pre-configure Lifespans: The new config file now includes a default setage list. You can edit this file manually before starting the server to pre-define which items should disappear early. Compatibility: While leaving the old files won't crash your game, deleting them ensures a clean installation and prevents any "command ghosting" from older versions. 1. New Command System: /opt The command structure has been redesigned for speed and ease of use. All administrative tools are now grouped under the /opt root command. General Settings /opt auto <on/off>: Toggles the automatic optimization engine (adjusts settings based on player activity). /opt restore: The "Panic Button". Instantly reverts all server settings, game rules, and item lifespans to Vanilla/Default values. /opt clear: Emergency removal of all hostile mobs to stabilize server TPS. World & Environment /opt dis <2-32>: Manually set the server's View Distance. /opt sim <2-32>: Manually set the server's Simulation Distance. /opt randomtick <on/off>: Toggles plant growth and tick-based events between Restored and Optimized speeds. /opt daylight <on/off>: Toggles the sun/moon cycle. /opt weather <on/off>: Toggles rain and thunderstorms. /opt mobai <on/off>: Globally enables or disables AI for passive animals. 2. Feature Spotlight: Selective Item Despawn (Smart Cleanup) Unlike other optimization mods that blindly wipe all items on the ground (often deleting valuable gear), this mod gives you surgical precision. You decide exactly what is considered "trash" and how fast it should vanish. Selective Control: Keep the ground clean by targeting only high-frequency drops like Cobblestone, Dirt, or Netherrack. Safety First: Valuable items (Diamonds, Netherite, or tools) remain unaffected, keeping their standard 5-minute lifespan. How to use: Syntax: /opt <item_id> setage <ticks> Example: /opt minecraft:cobblestone setage 300 Registry Name: You must use the full namespace (e.g., minecraft:dirt or modname:item). Use F3 + H in-game to see the exact ID of any item. The Logic: Standard items last 6000 ticks (5 mins). By setting "trash" items to 300 ticks (15 seconds), you eliminate the source of entity lag without punishing players who accidentally drop their gear.

🛠️ Update Note — The Automatic & Config Update (v2.0) Note: This mod is for Minecraft 1.18.2 only. This is a complete rebuild of the Empty Server Optimizer, making it smarter, safer, and fully automatic! The biggest change: the mod now runs automatically by default. It detects when the last player leaves and applies all optimizations (sets distance to 2, pauses AI, etc.). When the first player joins, it instantly restores all your original settings. This update also introduces a .toml config file (/world/serverconfig/tickpauseserver-common.toml). This makes the mod crash-proof. Even if your server crashes while empty, it will always remember your original settings and restore them correctly.

🛠️ Update Note — Empty Server Optimizer You can now configure the server directly using in-game commands, without editing config files or restarting! This makes it easier to test, apply, and debug features instantly — and also helps avoid some of the annoying bugs from before. I’m really sorry for the frustrating issue earlier — thank you for your patience ❤️ ⚙️ Available Commands All commands start with /optimizer and require admin (permission level 2). 🧠 Mob AI Control /optimizer mobai on → Enables AI for all passive mobs (animals, villagers, etc.) /optimizer mobai off → Freezes AI for all passive mobs 💀 Hostile Mobs /optimizer clearhostiles → Instantly removes all hostile mobs from the world 🌱 Random Tick Speed /optimizer randomtick on → Restores default random tick speed (usually 3) /optimizer randomtick off → Sets random tick speed to 0 (pauses plant growth, leaf decay, etc.) ☀️ Daylight Cycle /optimizer daylightcycle on → Enables day-night cycle /optimizer daylightcycle off → Pauses day-night cycle 🌧️ Weather Cycle /optimizer weathercycle on → Enables weather changes /optimizer weathercycle off → Pauses weather cycle 🛰️ Distance Settings /optimizer distance on → Restores original view and simulation distance /optimizer distance off → Reduces view and simulation distance to optimize performance when the server is empty

🛠️ Update Note — Empty Server Optimizer You can now configure the server directly using in-game commands, without editing config files or restarting! This makes it easier to test, apply, and debug features instantly — and also helps avoid some of the annoying bugs from before. I’m really sorry for the frustrating issue earlier — thank you for your patience ❤️ ⚙️ Available Commands All commands start with /optimizer and require admin (permission level 2). 🧠 Mob AI Control /optimizer mobai on → Enables AI for all passive mobs (animals, villagers, etc.) /optimizer mobai off → Freezes AI for all passive mobs 💀 Hostile Mobs /optimizer clearhostiles → Instantly removes all hostile mobs from the world 🌱 Random Tick Speed /optimizer randomtick on → Restores default random tick speed (usually 3) /optimizer randomtick off → Sets random tick speed to 0 (pauses plant growth, leaf decay, etc.) ☀️ Daylight Cycle /optimizer daylightcycle on → Enables day-night cycle /optimizer daylightcycle off → Pauses day-night cycle 🌧️ Weather Cycle /optimizer weathercycle on → Enables weather changes /optimizer weathercycle off → Pauses weather cycle 🛰️ Distance Settings /optimizer distance on → Restores original view and simulation distance /optimizer distance off → Reduces view and simulation distance to optimize performance when the server is empty

1.21.8

- Added config file (tickpauseserver-server.toml) to allow users to easily enable or disable specific features. - Improved compatibility with tick-optimizing mods, such as Rubidium Reforged and Radium Reforged: - Users can disable potentially conflicting features (Passive Mob Freezing, Hostile Mob Clearing, Random Tick Pausing) when using Rubidium.

Pause server tick & reduce CPU usage. Supports almost all dimension mods. Optimizations for Config: Save / World Name / TickPause.