PerformanceAnalyzer

v2.0.0 (18.02.2025) - Major Release

Why Version 2.0? This release fundamentally transforms PerformanceAnalyzer from a simple monitoring tool into an intelligent lag diagnosis system. With 4 new classes, a completely redesigned GUI, and groundbreaking lag source detection, this is more than just new features—it's a new generation of the plugin.

Major New Features:

• 🎯 Lag Source Detection - Automatically identifies what's causing lag

  • Player Activity Tracking - Monitors player actions (blocks, movements, commands, interactions)
  • Plugin Performance Analysis - Identifies suspect plugins by event listeners and task count
  • Integrated with Performance Drops - Lag sources are shown in /perfdrops reports
  • Shows top 5 most active players during performance drops
  • Shows top 5 suspect plugins with risk scores
  • Weighted activity scoring (breaking blocks = higher weight than walking)
  • Detects "heavy" plugins (WorldEdit, FAWE, CoreProtect, etc.)

• 🚨 Restricted World Zones - Instant alerts for specific worlds

  • Configure worlds as "restricted zones" for mining monitoring
  • Option to monitor specific ores or all ores in restricted worlds
  • Instant alerts when players mine ores in restricted zones (no threshold needed)
  • Perfect for protecting areas or catching suspicious behavior
  • New config: anticheat.restricted_worlds and anticheat.restricted_world_ores
  • Logs to database with type anticheat_restricted_zone

Critical Bugfixes:

• ✅ Fixed missing imports in PerformanceAnalyzer.java (Player, UUID)
• ✅ Fixed MySQL incompatibility - AUTOINCREMENT vs AUTO_INCREMENT
• ✅ Fixed MySQL datetime syntax - All time-based queries now work with MySQL
  • getRecentMspt() - Fixed
  • getAverageByType() - Fixed
  • countPerformanceSpikes() - Fixed
  • cleanOldData() - Fixed
• ✅ Plugin now fully compatible with both SQLite AND MySQL

Improvements:

• 🔧 Configurable Performance Thresholds - All lag detection thresholds are now customizable
  • Chunk thresholds: tile entities, redstone, entities (warning/critical)
  • World health thresholds: entity warning/critical levels
  • Plugin risk score interpretation: low/medium/high boundaries
  • Prevents false positives on servers with different hardware
  • Config includes recommendations for standard/powerful/weak servers
  • Allows fine-tuning based on your specific server needs
• Movement detection now properly distinguishes between walking and sprinting
• XRay detector properly handles ore blocks (not items)
• Better null-safety in configuration migration
• Improved performance drop reports with lag source attribution
• Version compatibility updated: Paper 1.21.x (all 1.21 versions)

🔥 Performance Optimizations:

• Movement Sampling - PlayerMove events only processed every 10th occurrence or >2 blocks distance (~90% reduction)
• Chunk Analysis Timeout - Configurable timeout (default 5s) prevents long-running chunk scans
• Self-Monitoring - Plugin measures and warns about its own performance impact
• Config Options - All lag analysis features can be disabled independently
• Memory Cleanup - Automatic cleanup on player quit prevents memory leaks
• New Config Section: lag_analysis with player_tracking, plugin_analysis, chunk_analysis_timeout_ms

🎨 GUI Improvements:

• 🆕 Lag-Analyse GUI Page - Interactive page showing active players and suspect plugins
  • Top 5 most active players with detailed breakdown
  • Top 5 suspect plugins with risk scores
  • Refresh and clear data buttons
  • Config-aware (shows warnings if features disabled)
• 🆕 Performance Drops GUI Page - Browse and click drops for detailed reports
  • Visual list of 21 recent drops
  • Color-coded by severity (Red/Orange/Yellow)
  • Click any drop for full report in chat
  • Shows lag source previews
• Expanded Main GUI - Now 2 rows of features instead of 1
  • Database Info button
  • World Stats quick-link
  • Better organization
• Multi-page Navigation - Consistent back buttons between pages

New Classes:

• PlayerActivityTracker - Monitors player actions in real-time (with sampling)
• PluginTimingsAnalyzer - Analyzes plugin performance impact
• LagAnalysisGUI - GUI page for lag source inspection
• PerformanceDropsGUI - GUI page for drop history browsing