Superfetch was introduced in Windows Vista, and on the latest versions of Windows 10 it’s now known as Sysmain. Ultimately, the purpose of every generation of Superfetch has been the same: to increase the performance of Windows by preloading apps you frequently use into RAM before you need to use them.
Is it okay to disable SysMain?
If you load a program, Windows has to copy the executable into memory in order to run it. If you close the application, the program still exists in RAM. If you run the program again, Windows won’t have to load anything from disk – it will all be sitting in RAM.
Why does SysMain use 100% disk?
Cause of high disk usage by SysMain
For an HDD it is extra intensive and time consuming to continuously set up your disk in the best possible way. At the same time, it is even more important to keep everything in the right order. So decide wisely whether you want the service on or off.
Does disabling SysMain improve performance?
Honestly if it is only using 40MB – 60MB of RAM that is not really affecting your system performance, if it was using a huge percentage of Disk, the it would be worth disabling . . . Power to the Developer!
Is disabling Superfetch safe?
To reiterate, we don’t recommend disabling Superfetch except as a troubleshooting measure for the potential issues mentioned above. Most users should keep Superfetch enabled because it does help with overall performance. If you aren’t sure, try turning it off. If you don’t notice any improvements, turn it back on.
Why is SysMain so high?
If you use an HDD on your system, then it’s quite probable that SysMain will cause a high CPU because of the simple fact that HDD is slow in reorganizing itself. If you encounter a problem with high CPU usage due to SysMain, the clear solution is to disable the service.
What happens if you end SysMain?
In other cases, SysMain ends up eating up all your CPU power, not the disk… but in the end, it doesn’t really matter what it does because the result is the same: your computer is slower instead of faster as the SysMain service claims to make it.
How can I speed up my computer with Windows 10?
Tips to improve PC performance in Windows 10
- Make sure you have the latest updates for Windows and device drivers. …
- Restart your PC and open only the apps you need. …
- Use ReadyBoost to help improve performance. …
- Make sure the system is managing the page file size. …
- Check for low disk space and free up space.
Why does HDD run at 100?
If you see a disk usage of 100% your machine’s disk usage is maxed out and your system’s performance will be degraded. You need to take some corrective action. Many users who have recently upgraded to Windows 10 have complained of their computers running slowly and Task Manager reporting 100% disk usage.
Does disabling prefetch increase FPS?
Hence, disabling prefetch and superfetch can extend the lifespan of the unit. As for gamers, some may noticed random in-game framerate drops which can be possibly caused by the caching process and disabling prefetch can prevent that from happening.
Should I turn off prefetch?
Prefetch loads pieces of program files into RAM. By disabling this feature, you free up your system memory. This is one of those tweaks that isn’t universal to all SSDs. In fact, it’s not recommended if you own an Intel drive, as it purportedly has a negative impact on performance.