yaze/docs/analysis/editor_performance_monitoring_setup.md

Editor Performance Monitoring Setup

Overview

Successfully implemented comprehensive performance monitoring across all YAZE editors to identify loading bottlenecks and optimize the entire application startup process.

✅ Completed Tasks

1. Performance Timer Standardization

• Cleaned up and standardized all performance monitoring timers
• Added consistent core::ScopedTimer usage across all editors
• Integrated with the existing core::PerformanceMonitor system

2. Editor Timing Implementation

Added performance timing to all 8 editor Load() methods:

Editor	File	Status
OverworldEditor	overworld/overworld_editor.cc	✅ Already had timing
DungeonEditor	dungeon/dungeon_editor.cc	✅ Added timing
ScreenEditor	graphics/screen_editor.cc	✅ Added timing
SpriteEditor	sprite/sprite_editor.cc	✅ Added timing
MessageEditor	message/message_editor.cc	✅ Added timing
MusicEditor	music/music_editor.cc	✅ Added timing
PaletteEditor	graphics/palette_editor.cc	✅ Added timing
SettingsEditor	system/settings_editor.cc	✅ Added timing

3. Implementation Details

Each editor now includes:

#include "app/core/performance_monitor.h"

absl::Status [EditorName]::Load() {
  core::ScopedTimer timer("[EditorName]::Load");
  
  // ... existing loading logic ...
  
  return absl::OkStatus();
}

🎯 Expected Results

When you run the application and load a ROM, you'll now see detailed timing for each editor:

=== Performance Summary ===
Operation                     Count       Total (ms)     Average (ms)   
------------------------------------------------------------------------
OverworldEditor::Load         1           XXX            XXX           
DungeonEditor::Load           1           XXX            XXX           
ScreenEditor::Load            1           XXX            XXX           
SpriteEditor::Load            1           XXX            XXX           
MessageEditor::Load           1           XXX            XXX           
MusicEditor::Load             1           XXX            XXX           
PaletteEditor::Load           1           XXX            XXX           
SettingsEditor::Load          1           XXX            XXX           
LoadAllGraphicsData           1           XXX            XXX           
------------------------------------------------------------------------

🔍 Bottleneck Identification Strategy

Phase 1: Baseline Measurement

Run the application and collect performance data to identify:

• Which editors are slowest to load
• Total loading time breakdown
• Memory usage patterns during loading

Phase 2: Targeted Optimization

Based on the results, focus optimization efforts on:

• Slowest Editors: Apply lazy loading or deferred initialization
• Memory-Intensive Operations: Implement progressive loading
• I/O Bound Operations: Add caching or parallel processing

Phase 3: Advanced Optimizations

• Parallel Editor Loading: Load independent editors concurrently
• Predictive Loading: Pre-load editors likely to be used
• Resource Pooling: Share resources between editors

🚀 Next Steps

1. Run Performance Test: Load a ROM and collect the performance summary
2. Identify Bottlenecks: Find the slowest editors (likely candidates: DungeonEditor, ScreenEditor)
3. Apply Optimizations: Implement lazy loading for slow editors
4. Measure Improvements: Compare before/after performance

📊 Expected Findings

Based on typical patterns, we expect to find:

• OverworldEditor: Already optimized (should be fast)
• DungeonEditor: Likely slow (complex dungeon data loading)
• ScreenEditor: Potentially slow (graphics processing)
• SpriteEditor: Likely fast (minimal loading)
• MessageEditor: Likely fast (text data only)
• MusicEditor: Likely fast (minimal loading)
• PaletteEditor: Likely fast (small palette data)
• SettingsEditor: Likely fast (configuration only)

🎉 Benefits

• Complete Visibility: See exactly where time is spent during ROM loading
• Targeted Optimization: Focus efforts on the real bottlenecks
• Measurable Progress: Track improvements with concrete metrics
• User Experience: Faster application startup and responsiveness

The performance monitoring system is now ready to identify and help optimize the remaining bottlenecks in YAZE's loading process!