快速浏览一下Mac 的活动监视器(Mac’s Activity Monitor)会在列表顶部显示一个名为WindowServer的进程。(WindowServer)它是您的Mac离不开的众多系统进程之一。
在这个解释器中，我们将带您了解WindowServer的性质以及它在您的Mac上的作用。我们还将介绍为什么进程总是在后台运行的原因，以及当它成为 CPU hog(becomes a CPU hog)时该怎么办。
Mac 上的 WindowServer 是什么？
WindowsServer是Mac操作系统的核心组件，负责将应用程序的可视化界面投射到您的屏幕上。WindowServer还管理其他重要的系统图形用户界面 ( GUI )(GUI)，例如Dock和菜单栏(Menu Bar)。Mac 屏幕上出现的每一件事都是由WindowsServer实现的。
macOS会在您登录Mac时自动启动(Mac)WindowServer。该过程将在后台保持活动状态，为所有应用程序的图形/视觉界面提供动力，直到您注销或关闭Mac。除了为应用程序提供图形支持外，一些没有面向用户界面的后台应用程序也严重依赖WindowServer。
WindowServer 安全吗？
Mac上的WindowServer是一个完全无害的系统进程。如果有的话，它可以帮助应用程序和其他系统进程正常运行。只有当 WindowServer 使CPU(CPU)负担过重、增加风扇噪音或减慢Mac的性能时，您才应该担心它。
如果您发现WindowServer在(WindowServer)Activity Monitor中使用了大量的(Activity Monitor)CPU资源，您可能很想强制退出它，但您不应该这样做。如果没有在后台运行此进程，您将无法使用Mac 。
强制退出WindowServer将关闭所有活动的应用程序，刷新操作系统，并将您从Mac中注销。当您重新登录时，macOS 将再次在后台自动启动WindowServer并继续循环。这表明该过程对于Mac的正常运行有多重要。
尽管是一个安全的系统进程，WindowServer有时会导致您的Mac出现故障。在下一节中，我们将解释为什么会发生这种情况以及如何将WindowServer的高CPU使用率扼杀在萌芽状态。
是什么导致WindowServer(Fix)高 CPU 使用率(WindowServer High CPU Usage)（以及如何(How)修复）
自然，WindowServer 的CPU和内存消耗将取决于Mac上使用该进程的活动应用程序的数量。但是，以下因素可能会导致CPU使用率过高问题：
1.你的桌面上有太多的项目(1. You Have Too Many Items On Your Desktop)
请记住(Remember)，Mac 显示器上的所有内容都是由WindowServer放置的。桌面上的项目（图标、文件、文件夹等）越多，WindowServer将它们保留在那里所需的处理能力就越强。
如果WindowServer使用过多的CPU资源并且桌面上有超过 50 个项目，请删除不必要的文件和图标。更好(Better)的是，将它们移动到桌面上的单个文件夹中。
2. 太多的活动应用程序和 Windows(2. Too Many Active Apps and Windows)
有太多活动的应用程序和窗口也可能导致WindowServer CPU使用率飙升。关闭(Close)您不使用的不必要的窗口和应用程序。
3. 一个有缺陷的程序导致了问题(3. A Buggy Program Is Causing the Problem)
如果仅在您启动特定应用程序时WindowServer的CPU使用率飙升，则该应用程序很可能存在导致其故障的错误。(CPU)要查明导致问题的应用程序，请关闭所有活动的应用程序并一次重新启动它们。使用应用程序至少 3-5 分钟，然后在Activity Monitor中检查(Activity Monitor)WindowServer的使用情况。
如果应用程序异常使 WindowServer 的CPU消耗达到峰值，请更新应用程序并检查是否可以解决问题。否则(Otherwise)，请联系应用程序开发人员提交错误报告。
4. 你的游戏鼠标是另一个潜在的罪魁祸首(4. Your Gaming Mouse Is Another Potential Culprit)
一些 Mac 用户(Some Mac users)指出，在他们的设备上使用游戏鼠标会导致Mac上的WindowServer使用大量CPU资源。断开连接到(Disconnect)Mac的所有游戏配件，并检查这是否会减少WindowServer CPU使用率。
5.视觉效果和动画(5. Visual Effects and Animation)
macOS 附带“透明”功能，可将活动窗口的背景与您的桌面图片进行模糊处理。虽然此功能为应用程序窗口添加了某种美学效果和视觉效果，但它可能会导致WindowServer消耗大量CPU资源，尤其是当您打开太多窗口时。
转到System Preferences > Accessibility > Display并检查减少透明度(Reduce transparency)和减少运动(Reduce motion)。
6. 多个虚拟桌面或外部显示器设置(6. Multiple Virtual Desktop or External Monitor Setup)
如果您使用外部显示器，WindowServer 会消耗更多的CPU功率和内存。(CPU)该过程使用更多的处理能力将视觉效果传输到多个显示器。如果您在 Mac 上使用多台显示器，请(use multiple displays with your Mac)断开一台显示器，看看这是否会减少WindowServer CPU使用率。
在Mission Control(Mission Control)中使用多个虚拟桌面或空间也会导致WindowServer使(WindowServer)CPU过载。要解决此问题，请减少Mission Control中的虚拟桌面数量或前往System Preferences > Mission Control并取消选中Automatically rerange (Head)Spaces based on most recent use(Automatically rearrange Spaces based on most recent use)。
如果问题仍然存在，请返回Mission Control菜单并取消选中Displays have separate Spaces。
注意：在(Note:)Mission Control中禁用“Displays have separate Spaces”将减少 WindowServer 的CPU使用率，但如果您在全屏模式下使用应用程序，您的外接显示器可能会变为空白。
Mac 上的 WindowServer 简化版
希望您现在知道WindowServer是什么以及为什么该进程始终在后台运行。
如果WindowServer在您的(WindowServer)Mac上使用不合理的高处理能力，请使用上述故障排除步骤来诊断和修复问题。如果问题仍然存在，重新启动Mac或重置其 NVRAM(resetting its NVRAM)肯定会将该过程恢复到正常状态。
What is WindowServer on Mac (and Is It Safe?)
A quick glance at your Mac’s Activity Monitor will reveal a process called WindowServer at the top section of the list. It is one of the many system processes that your Mac cannot do without.
In this explainer, we’ll walk you through the nature of the WindowServer and what it does on your Mac. We’ll also cover reasons why the process is always running in the background, and what to do when it becomes a CPU hog.
What is WindowServer on Mac?
WindowsServer is a central component of the Mac operating system that’s responsible for projecting the visual interface of applications on your screen. The WindowServer also manages other important system graphical user interfaces (GUI) like the Dock and Menu Bar. Every single thing that comes on your Mac’s screen was made possible by the WindowsServer.
macOS starts WindowServer automatically when you log in to your Mac. The process will stay active in the background, powering the graphical/visual interface of all applications until you log out or shut down your Mac. Asides from providing graphical support to applications, some background applications without a user-facing interface also rely heavily on the WindowServer.
Is WindowServer Safe?
WindowServer on Mac is a totally harmless system process. If anything, it helps applications and other system processes function correctly. You should only worry about WindowServer when it overburdens the CPU, raises fan noise, or slows down your Mac’s performance.
You may be tempted to force-quit WindowServer if you find it using an insane amount of CPU resources in the Activity Monitor, but you shouldn’t. You can’t use your Mac without this process running in the background.
Force-quitting WindowServer will close all active applications, refresh the operating system, and log you out of your Mac. When you sign back in, macOS will automatically launch WindowServer in the background again and the cycle continues. That goes to show how important the process is to the proper functioning of your Mac.
Despite being a safe system process, WindowServer sometimes causes your Mac to malfunction. In the next section, we explain why that happens and how to nip WindowServer’s high CPU usage in the bud.
What Causes WindowServer High CPU Usage (And How to Fix)
Naturally, WindowServer’s CPU and memory consumption will depend on the number of active applications using the process on your Mac. However, the following factors can result in high CPU usage issues:
1. You Have Too Many Items On Your Desktop
Remember that everything on your Mac’s display was put there by the WindowServer. The more items (icons, files, folder, etc.) there are on your desktop, the more processing power required by WindowServer to keep them there.
If WindowServer is using excessive CPU power and there are over 50 items on your desktop, delete unnecessary files and icons. Better yet, move them to a single folder on the desktop.
2. Too Many Active Apps and Windows
Having too many active apps and windows may also cause WindowServer CPU usage to skyrocket. Close unnecessary windows and applications that you aren’t using.
3. A Buggy Program Is Causing the Problem
If WindowServer’s CPU usage shoots through the roof only when you launch a particular application, the app most likely has a bug causing it to malfunction. To pinpoint the app causing the problem, close all active applications and relaunch them one at a time. Use an application for at least 3-5 minutes and check the WindowServer usage in the Activity Monitor.
If an application abnormally spikes WindowServer’s CPU consumption, update the app and check if that fixes the problem. Otherwise, contact the app developer to file a bug report.
4. Your Gaming Mouse Is Another Potential Culprit
Some Mac users noted that using a gaming mouse on their devices caused WindowServer on Mac to use a lot of CPU power. Disconnect any gaming accessory connected to your Mac and check if that reduces WindowServer CPU usage.
5. Visual Effects and Animation
macOS ships with a “Transparency” feature that blurs the background of active windows against your desktop picture. While this feature adds some sort of aesthetic effect and visual to app windows, it could cause the WindowServer to consume high CPU power—particularly when you have too many windows open.
Go to System Preferences > Accessibility > Display and check both Reduce transparency and Reduce motion.
6. Multiple Virtual Desktop or External Monitor Setup
WindowServer consumes more CPU power and memory if you use an external display. The process uses even more processing power to transmit visuals to multiple monitors. If you use multiple displays with your Mac, disconnect one monitor and see if that reduces WindowServer CPU usage.
Using multiple virtual desktops or Spaces in Mission Control can also cause WindowServer to overload your CPU. To fix the problem, reduce the number of virtual desktops in Mission Control or Head to System Preferences > Mission Control and uncheck Automatically rearrange Spaces based on most recent use.
If the problem continues, return to the Mission Control menu and uncheck Displays have separate Spaces.
Note: Disabling “Displays have separate Spaces” in Mission Control will reduce WindowServer’s CPU usage, but your external monitor may go blank if you use an application in full screen.
WindowServer on Mac Simplified
Hopefully, you now know what WindowServer is and why the process runs in the background at all times.
If WindowServer uses unreasonably high processing power on your Mac, use the troubleshooting steps above to diagnose and fix the problem. If the issue persists, rebooting your Mac or resetting its NVRAM would definitely restore the process to normalcy.
