unity-profiler-guide.md

Unity Profiler Guide for Mobile Games

Profiling helps identify the real cause of performance problems.

Avoid making optimization decisions based only on assumptions.

CPU Profiling

Check for:

• Expensive Update methods
• Garbage collection spikes
• Physics calculations
• Excessive object creation
• Repeated component searches
• Complex AI calculations

GPU Profiling

Check for:

• High rendering cost
• Expensive shaders
• Overdraw
• Real-time lighting
• Shadows
• Particle effects

Memory Profiling

Monitor:

• Texture memory
• Mesh memory
• Audio memory
• Managed memory
• Loaded assets

Rendering Statistics

Monitor:

• Draw calls
• Batches
• Triangles
• Vertices
• SetPass calls

Test on Real Devices

A Unity game that performs well inside the Editor may still experience problems on a low-end Android device.

Always test:

• Frame rate
• Loading times
• Memory usage
• Battery consumption
• Device temperature
• Long gameplay sessions

Optimization Workflow

1. Build the game.
2. Test on a real device.
3. Identify the performance bottleneck.
4. Profile the problem.
5. Make one optimization change.
6. Test again.
7. Compare the results.

This approach helps prevent unnecessary optimization work.