Light Core
🟡 Updated this year⚠️ Install Order · 2 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
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🔍 Analysis
- 👍 0.1% endorsement rate
- 🏆 #469 of 874 fabric mods in this game by downloads
📋 About This Mod
# LightCore LightCore is a lightweight, client-side performance logger for Minecraft that samples FPS and key system metrics, then converts them into a clear score, tier, and ranking—so you can understand what’s driving low performance. # What it measures LightCore collects periodic performance snapshots containing: - Client FPS (averaged over a short rolling window) - JVM memory usage (heap used / heap max) - Physical memory usage (used / total) - CPU load (percent) and CPU core count - OS/architecture/Java version metadata (for context) # Scoring, tiers, and ranking Each snapshot is analyzed into: - **Score (0–100):** a weighted evaluation based on FPS plus penalties from memory pressure, CPU load, and CPU core context - **Tier:** `Excellent`, `Good`, `Average`, or `Low` - **Hint:** a short, actionable message (e.g., low FPS, high CPU load, or high memory pressure) - **Rank:** where the current snapshot stands compared to recent history Sampling timing adapts to current conditions (when FPS is low, it samples more frequently; when FPS is stable, it backs off). # Output (CSV + logs) Results are written to your local game directory as a CSV file: - `logs/lightcore-performance.csv` It also prints a compact summary line to logs for quick checks while testing. # How to use 1. Install the mod on the client. 2. Play normally for a few minutes (especially when you suspect lag/stutter). 3. Review `lightcore-performance.csv` and the log output to spot trends and the best/worst snapshots. # Compatibility Designed for Fabric with Fabric API and runs on the client side.
# LightCore LightCore is a lightweight, client-side performance logger for Minecraft that samples FPS and key system metrics, then converts them into a clear score, tier, and ranking—so you can understand what’s driving low performance. # What it measures LightCore collects periodic performance snapshots containing: - Client FPS (averaged over a short rolling window) - JVM memory usage (heap used / heap max) - Physical memory usage (used / total) - CPU load (percent) and CPU core count - OS/architecture/Java version metadata (for context) # Scoring, tiers, and ranking Each snapshot is analyzed into: - Score (0–100): a weighted evaluation based on FPS plus penalties from memory pressure, CPU load, and CPU core context - Tier: `Excellent`, `Good`, `Average`, or `Low` - Hint: a short, actionable message (e.g., low FPS, high CPU load, or high memory pressure) - Rank: where the current snapshot stands compared to recent history Sampling timing adapts to current conditions (when FPS is low, it samples more frequently; when FPS is stable, it backs off). # Output (CSV + logs) Results are written to your local game directory as a CSV file: - `logs/lightcore-performance.csv` It also prints a compact summary line to logs for quick checks while testing. # How to use 1. Install the mod on the client. 2. Play normally for a few minutes (especially when you suspect lag/stutter). 3. Review `lightcore-performance.csv` and the log output to spot trends and the best/worst snapshots. # Compatibility Designed for Fabric with Fabric API and runs on the client side.
📊 Mod Details
- Game
- Minecraft Mods
- Author
- Stormglyph
- Version
- 0.0.1
- Downloads
- 1,813
- Endorsements
- 1
- Category
- fabric
- Created
- 3/30/2026
- Updated
- 3/20/2026
- Game Versions
- 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8
- Tags
- optimization, technology, utility
🔧 How to Install Minecraft Mods Mods
Download from Modrinth. Use Prism Launcher or drop into your mods folder.
📖 Full step-by-step install guide for Minecraft Mods →
Visit the official mod page for specific installation instructions for this mod.
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❓ Frequently Asked Questions
Which Minecraft Mods versions does Light Core support?
The author lists 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9. Other versions may work but are untested by the author.
What is the latest version of Light Core?
Version 0.0.1, published 2026-03-20 with 1,813 downloads recorded at the source.
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