如果您在任务管理器^{(Task Manager)}中发现服务主机本地系统^{(Service Host Local System)}占用了您的大部分磁盘、CPU和内存^(Memory)使用量，这可能会影响您的系统性能^{(system performance)}，您可以尝试本文中提供的解决方案来解决这种高 CPU 或磁盘使用率^{(high CPU or disk usage)}您的 Windows 11/10 电脑。

服务主机本地系统^{(Service Host Local System)}是一组通过系统自动运行的系统进程。^{(System Processes)}它包括几个进程，例如Windows 自动更新^{(Windows Auto Update)}和许多其他会占用一些磁盘空间、内存、CPU甚至网络^(Network)的进程。

服务主机^{(Service Host)}：本地系统^(System)高CPU或磁盘^(Disk)使用率

如果您遇到此问题，可以尝试我们推荐的解决方案，看看是否有助于解决问题。

1. 运行 SFC 和 DISM 扫描
2. 禁用 Superfetch
3. 修改注册表项值
4. 禁用Windows 更新传递^{(Windows Update Delivery)}优化
5. 在干净启动状态下进行故障排除
6. 升级 CPU。

让我们看一下关于列出的每个解决方案所涉及的过程的描述。

1]运行SFC和DISM扫描

服务主机：Windows 10 PC 上的本地系统 CPU 或磁盘使用率过高^{(Service Host: Local System high CPU or Disk usage)}可能是由损坏的系统文件引起的。在这种情况下，您可以尝试运行系统文件检查器来检查和修复损坏的系统文件。您可以使用DISM（部署映像服务和管理）扫描^{(DISM (Deployment Image Servicing and Management) scan)}来跟进，这是一种修复有问题的Windows系统映像文件的强大实用程序。

2]禁用Superfetch

此解决方案要求您禁用 Superfetch^{(disable Superfetch)}并查看问题是否已解决。如果没有，请尝试下一个解决方案。

相关：^(Related:)修复反恶意软件服务可执行文件高 CPU、内存、磁盘使用率。^{(Antimalware Service Executable High CPU, Memory, Disk usage.)}

3]修改注册表键值

这里要修改的注册表项是ndu.sys。ndu.sys（网络数据使用监视器^{(Network Data Usage Monitor)}）文件是一个Windows驱动程序。

由于这是注册表操作，建议您备份注册表^{(back up the registry)} 或 创建系统还原点 作为必要的预防措施。完成后，您可以执行以下操作：

• 按Windows key + R调用“运行”对话框。
• 在“运行”对话框中，键入regedit并按 Enter 以打开注册表编辑器^{(open Registry Editor)}。
• 导航或跳转到下面的注册表项路径：

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Ndu

• 在该位置的右窗格中，双击开始^(Start)键以编辑其属性。
• 在数值数据^{(Value data)}字段中输入4 。

注意^(Note)：将注册表Start值更改为 4 将禁用 ndu 的某些部分。

• 按 Enter^{(Hit Enter)}或单击 OK 保存更改。
• 退出注册表编辑器。
• 重新启动您的电脑。

在启动时检查问题是否已解决。如果没有继续下一个解决方案。

4]禁用Windows更新传递^{(Windows Update Delivery)}优化

您可能想要禁用 Windows 更新传递优化并查看手头的问题是否已解决。

5]在干净启动状态下进行故障排除

计算机上存在或运行的不必要的系统和缓存文件、进程、服务可能会导致此问题。

干净启动是^(Boot)Windows 10上的一个环境，其中仅运行基本和基本服务，第三方应用程序或其他内置功能不会触发任何问题。

此解决方案要求您 执行干净启动^{(perform a Clean Boot)}并查看是否有帮助。如果问题仍然存在，请尝试下一个解决方案。

6]升级CPU

如果以上解决方案都不适合您，您可以选择升级您的CPU。该问题可能是由旧CPU或过时/损坏的CPU驱动程序引起的。在这种情况下，您可以先尝试更新CPU驱动程序，看看是否有帮助 - 如果没有，您可以升级您的CPU。

您可以通过设备管理器^{( via the Device Manager)}手动更新处理器驱动程序，也可以在Windows 更新下^{(Windows Update)}的可选更新^{(on the Optional Updates)}（如果可用）部分获取驱动程序更新。您也可以从CPU制造商的网站下载最新版本的驱动程序。^{(download the latest version of the driver)}

这些解决方案中的任何一个都应该适合您！

Service Host: Local System high CPU or Disk usage on Windows 11/10

If you nоtice in Taѕk Manager, that thе Service Host Local System is hogging much of your disk, CPU and Memory usage that is potentially impacting your system performance, you can try the solutions provided in this post to resolve this high CPU or disk usage on your Windows 11/10 PC.

The Service Host Local System is a bundle of System Processes which operate automatically through the system. It includes several processes, such as the Windows Auto Update and many others which will occupy some disk space, memory, CPU, and even the Network.

Service Host: Local System high CPU or Disk usage

If you’re faced with this issue, you can try our recommended solutions and see if that helps to resolve the issue.

1. Run SFC and DISM scans
2. Disable Superfetch
3. Modify Registry key value
4. Disable Windows Update Delivery Optimization
5. Troubleshoot in Clean Boot state
6. Upgrade CPU.

Let’s take a look at the description of the process involved concerning each of the listed solutions.

1] Run SFC and DISM scans

The Service Host: Local System high CPU or Disk usage on your Windows 10 PC may be caused by corrupted system files. In this case, you can try to run the System File Checker to check and repair the corrupted system files. You can follow that up with a DISM (Deployment Image Servicing and Management) scan – a powerful utility in fixing problematic Windows system image files.

2] Disable Superfetch

This solution requires you to disable Superfetch and see if the issue is resolved. If not, try the next solution.

Related: Fix Antimalware Service Executable High CPU, Memory, Disk usage.

3] Modify Registry key value

The registry key to be modified here is the ndu.sys. The ndu.sys (Network Data Usage Monitor) file is a Windows driver.

Since this is a registry operation, it is recommended that you back up the registry or create a system restore point as necessary precautionary measures. Once done, you can proceed as follows:

• Press Windows key + R to invoke the Run dialog.
• In the Run dialog box, type regedit and hit Enter to open Registry Editor.
• Navigate or jump to the registry key path below:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Ndu

• At the location, in the right pane, double-click the Start key to edit its properties.
• Input 4 in the Value data field.

Note: Changing the registry Start value to 4 will disable some part of the ndu.

• Hit Enter or click OK to save the change.
• Exit Registry Editor.
• Restart your PC.

On boot check if the issue is resolved. If not continue with the next solution.

4] Disable Windows Update Delivery Optimization

You may want to disable Windows Update Delivery Optimization and see if the issue at hand is resolved.

5] Troubleshoot in Clean Boot state

Unnecessary system and cache files, processes, services present or running on your computer can cause this issue.

Clean Boot is an environment on Windows 10 where only basic and essential services run and there is no issue being triggered by third-party applications or additional built-in features.

This solution requires you to perform a Clean Boot and see if that helps. If the issue persists, try the next solution.

6] Upgrade CPU

If none of the above solutions has worked for you, you can choose to upgrade your CPU. The issue may be caused by the old CPU or outdated/corrupted CPU drivers. In this case, you can first try updating the CPU drivers and see if that helped – if not, you can upgrade your CPU.

You can either update the processor drivers manually via the Device Manager, or you can get the driver updates on the Optional Updates (if available) section under Windows Update. You can also download the latest version of the driver from the CPU manufacturer’s website.

Any of these solutions should work for you!

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