To open the Profiler window in Unity Editor, follow these steps:

• Navigate to "Window" in the menu.
• Select "Analysis."
• Choose "Profiler" from the dropdown.

Ensure that the recording window is selected, and verify that the recording button is displaying a red color.

Click "Play" in Unity Editor if you are conducting editor profiling. Launch the application if you are conducting device profiling.

The Profiler records multiple areas of your application’s performance, and displays that information to you. You can use this information to make informed decisions about what you might need to optimize in your application, and to confirm that your optimizations produce the results you expect.

Search for spikes in the chart.

• Displays an overview of where your application spends the most time, in areas such as physics, scripts, animation, and garbage collection. This module contains broad profiling information about your application, and you can use it to decide which further modules to use to investigate more specific issues in your application.

• Displays information on how Unity renders graphics in your application, including information on static and dynamic batching, SetPass and Draw calls, triangles, and vertices.

• Displays information on how Unity allocates memory in your application. This is particularly useful for seeing how scripting allocations (GC.Alloc) lead up to garbage collection, or how your application’s Asset memory usage trends over time.