It’s the master compositor, laying all windows out to generate the image to be displayed. It also handles input and other event routing, as it knows where each app’s windows are, and which are at the front.
WindowServer
How the keyboard can be used for commands, from its reserved keys, to key equivalents, interface controls, and keyboard actions.
With Unified memory, don’t you simply add the main and graphics memory sizes from your Intel Mac to determine how much your Apple silicon Mac needs?
Each additional Safari window increases WindowServer’s memory use by 1.7 MB on an Intel Mac, but 50 MB on an M1 Mac – thirty times more.
The master compositor of windows, WindowsServer is a key part of the GUI which runs from when the login window appears until your Mac shuts down.
Is logging out and back in again a good way to deal with problems? Although it can be, it might not do what you think it does any more.
Recognition, immediate action including capturing the panic log, discovering clues as to cause, further investigations to diagnose and address the cause.
Your Mac starts up after kernel panic, and shows mystifying details about that panic. Here’s how to get the most out of that information.
What’s the difference between a crash and a panic? How can you tell what’s likely to have caused a panic?
This vital service composites individual windows to form what will be displayed, and routes clicks/taps to the correct app.
The Eclectic Light Company 