Lag Detector
by scawful
Performance profiler for Oracle of Secrets. Samples the CPU Program Counter (PC) to identify code hotspots and laggy routines using statistical analysis.
Skill Details
Repository Files
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name: lag-detector description: Performance profiler for Oracle of Secrets. Samples the CPU Program Counter (PC) to identify code hotspots and laggy routines using statistical analysis.
Lag Detector
Scope
- Profiling: Statistical sampling of CPU execution.
- Hotspot Analysis: Identify which routines consume the most cycles.
- Source Mapping: Map hotspots back to ASM files.
Core Capabilities
1. Profile execution
run --duration 10: Sample CPU for 10 seconds.- Output: A heatmap of the most executed routines.
2. Identify Bottlenecks
- "Routine
Update_Spritesexecuted 5000 times (40% of samples)." - Helps pinpoint inefficient loops or heavy logic.
Workflow
- Setup: Navigate to a laggy area (e.g., room with many enemies).
- Profile:
lag-detector run --duration 5. - Analyze: "Top hotspot is
Sprite_DrawinSprites.asm."
Dependencies
- Tool:
~/src/hobby/yaze/scripts/ai/profiler.py. - Mesen2: Running with socket server.
- z3ed: For symbol resolution.
Example Prompts
- "Profile the game for 10 seconds to find lag sources."
- "What routine is taking up the most CPU time right now?"
Troubleshooting
- No Hotspots: Ensure the game is not paused.
- Unknown Symbols: Ensure the ROM has a valid
.mlborsourcemap.json.
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