https://docs.unity3d.com/2018.4/Documentation/Manual/Profiler.html
Getting started with the Profiler window
Global Illumination Profiler module
Getting started with the Profiler window
Profiling your application
CPU Usage Profiler module
Rendering Profiler module
Memory Profiler module
Audio Profiler module
Physics Profiler module
GPU Profiler module
Global Illumination Profiler module
UI Profiler module