Inefficient use of CPU and memory can drastically slow down your system. In this article, we explore how to resolve Service Host SysMain high CPU and memory usage to streamline your system’s performance.
What is SysMain and what does it do?
SysMain, formerly known as SuperFetch, is a service in Windows 10 that manages the preloading of frequently used applications into memory, allowing them to launch faster. It is also responsible for maintaining a history of user activity to help with predictive app launching. However, some users have reported high CPU and memory usage by the SysMain service, which can slow down their systems.
To resolve this issue, you can try disabling the service or changing its startup type to manual. Disabling the service will prevent it from preloading apps, but it may also affect the overall performance of your system. Changing the startup type to manual will allow SysMain to run only when it is needed, reducing its resource usage.
To disable or change the startup type of SysMain, you can go to the Services app in Windows 10 and locate the service. Right-click on it and select Properties, then choose the appropriate option under Startup Type. Keep in mind that disabling or changing the startup type of SysMain may not be suitable for all users, and you may need to experiment with different settings to find the best solution for your system.
Why is SysMain causing high CPU and memory usage?
SysMain, formerly known as SuperFetch, is a Windows system process responsible for preloading frequently used applications into memory for faster access. However, this process can sometimes cause high CPU and memory usage, which can slow down your computer’s performance.
One reason for this issue could be that SysMain is preloading too many applications or files into memory, which can consume a significant amount of resources. Another reason could be that SysMain is conflicting with other programs or services running on your system.
To resolve this issue, you can try disabling SysMain or limiting its resource usage. You can do this by opening the Services application in Windows, locating the SysMain service, and adjusting its settings. Alternatively, you can use third-party tools to manage your system’s resources and optimize its performance.
How to diagnose SysMain high CPU and memory usage?
- Step 1: Open Task Manager
- Press Ctrl+Shift+Esc to open Task Manager
- Step 2: Identify the SysMain process
- Click on the Processes tab in Task Manager
- Look for the SysMain process
- Step 3: Determine the level of CPU and memory usage
- Observe the CPU and Memory columns in Task Manager
- Check if the SysMain process is using a high percentage of CPU and memory resources
- Step 4: Check for system updates
- Open the Settings app by pressing Win+I
- Click on Update & Security
- Check for any Windows updates and install them
- Step 5: Disable SysMain
- Open the Services app by pressing Win+R, typing services.msc, and hitting Enter
- Find the SysMain service
- Right-click on it and select Properties
- Change the Startup type to Disabled
- Click OK to save changes
- Step 6: Use Windows Performance Recorder
- Download and install the Windows Performance Toolkit
- Open the Windows Performance Recorder app
- Click on Start to begin recording
- Reproduce the SysMain high CPU and memory usage issue
- Click on Stop to end recording
- Analyze the recorded data to identify the root cause of the issue
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Analyze the recorded data to identify the root cause of the issue”>
Steps to resolve SysMain high CPU and memory usage
| Step | Description |
|---|---|
| Step 1 | Identify if SysMain is causing high CPU and memory usage |
| Step 2 | Stop SysMain service |
| Step 3 | Change SysMain service startup type to manual |
| Step 4 | Disable Superfetch service |
| Step 5 | Clean up temporary files and system files |
| Step 6 | Perform a disk cleanup |
| Step 7 | Disable unnecessary startup programs |
| Step 8 | Update drivers and perform system updates |
Preventative measures to avoid SysMain high CPU and memory usage in the future
Preventing SysMain from hogging your CPU and memory resources is crucial to ensure that your computer runs smoothly. One of the best ways to do this is by disabling SysMain altogether. This can be done by following the steps mentioned earlier in this article. Additionally, it is recommended to regularly clean out your system by removing unnecessary files and programs. This can help prevent any potential conflicts with SysMain and other services. Another tip is to keep your system updated with the latest software updates and patches. These updates often contain bug fixes that can help improve system performance and prevent issues like high CPU and memory usage. Finally, it’s important to regularly scan your system for malware and viruses. Malicious software can cause high resource usage and may also compromise your system’s security. By following these preventative measures, you can avoid SysMain high CPU and memory usage in the future and ensure that your system runs smoothly.
Oscar Green is a knowledgeable technology writer for helptechportal.com, concentrating on software development and programming languages. With a degree in Software Engineering and experience as a full-stack developer, Oscar’s articles provide readers with valuable insights and practical tips. In his spare time, he enjoys mentoring new developers and contributing to open-source projects.