What happens if I Quit the WindowServer process? In Activity Monitor, when you try to choose and force quit WindowServer, you will see that the Mac screen goes black. However, this process can’t be closed completely. Many users may be wondering whether you can disable WindowServer. That is why you often notice WindowServer high CPU. However, when you launched too many programs, WindowServer has to work more, thus occupying too many CPU resources. In applications like games, video editors, and many other programs, the WindowServer process is frequently used. Why is WindowServer Process Taking So Much CPU on Mac?Īs discussed above, nearly all Mac applications require the WindowServer process to run smoothly on Mac and draw windows for these applications as required on Mac desktop. Hence, to speed up the processing, the graphics card with AGP 2X or above like AGP 4X, 8X, and PCI Express is needed to activate Quartz Extreme. Of course, there are system requirements for the Mac graphics for Quartz Extreme. While Quartz Extreme empowers GPU to process the rendering of graphics instead of CPU, thus relieving the burden of CPU. On macOS before Mac OS X Tiger, elements on the Mac screen were rendered by the CPU. Quartz Extreme is a technology that allows Mac OS X graphics rendering to speed up GPU. On Mac OS X Tiger, the Quartz Extreme was introduced to Quartz Compositor. After the release of the new system update of OS X 10.4, the rendering functionality of Quartz 2D has been significantly improved. Initially, Quartz 2D was introduced to iOS and macOS as the two-dimensional graphics rendering API. To be specific, as a component of Core Graphics, Quartz 2D means a native two-dimensional graphics rendering API on macOS and iOS. Naturally, when speaking of Quartz Compositor, users also need to know about Quartz 2D and Quartz Extreme. While every Mac program will “communicate” with the WindowsServer process so that the latter can display the program via Frame Buffer on the screen. Simply put, Quartz Compositor or WindowServer is responsible for presenting and maintaining rasterized, rendered graphics from the rest of the Core Graphics framework and other renderers in the Quartz technologies family. In older macOS, this system component Quartz Compositor is called Window Manager. In fact, WindowServer is the name of Quartz Compositor displayed in Activity Monitor. WindowServer is one of the core system components on macOS, whereas WindowsServer refers to the server of Windows systems. How to Low WindowServer Process CPU and Memory Usage on Mac? What is WindowServer on Mac? Why is WindowServer Process Taking So Much CPU on Mac? When you noticed that the process WindowSever takes up over 50% of the CPU, you may be wondering what the WindowSever process is and how you can reduce its CPU usage on Mac. Activity Monitor, similar to Task Manager on Windows systems, is used to monitor processes on Mac.
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