Windows 10: What is sysmain, and why does it sometimes use a bunch of CPU? Can I disable it, and what...

Discus and support What is sysmain, and why does it sometimes use a bunch of CPU? Can I disable it, and what... in Windows 10 Software and Apps to solve the problem; I know this doesn't seem like a lot but 10-15% is enough to make me worry about it and I've seen it cause way more problems on older computers of mine.... Discussion in 'Windows 10 Software and Apps' started by EverydayAden, Jun 26, 2023.

  1. EVERYDAYADEN
    EverydayAden Win User

    What is sysmain, and why does it sometimes use a bunch of CPU? Can I disable it, and what...


    I know this doesn't seem like a lot but 10-15% is enough to make me worry about it and I've seen it cause way more problems on older computers of mine.

    :)
     
    EverydayAden, Jun 26, 2023
    #1
  2. DAVEM121
    DaveM121 Win User

    SysMain CPU usage keeps randomly spiking

    Hi retrobit64

    I am Dave, I will help you with this.

    SysMain is related to the Search Indexing process in Windows, it was previously known as SuperFetch, it is known to be very resource hungry and the best option is to disable SysMain, it is not required.

    Click your Start Button, then just type Services and press Enter.

    Scroll down the list of services to find SysMain, then double click that service.

    Stop that service and set its Startup type to disabled.

    Save that setting and restart (not shut down) your PC.
     
    DaveM121, Jun 26, 2023
    #2
  3. KENDRAMOMENT
    kendramoment Win User
    SysMain CPU usage keeps randomly spiking

    SysMain keeps randomly spiking CPU usage from 0% to around 11%. It’s happening every few minutes and it’s getting irritating. There aren’t any viruses or any other malicious software. Whats going on?? Is it normal??
     
    kendramoment, Jun 26, 2023
    #3
  4. STEVE108
    steve108 Win User

    What is sysmain, and why does it sometimes use a bunch of CPU? Can I disable it, and what...

    SysMain no activity without internet connection?

    Hello @RoasterMen *Smile
    I have not understood SysMain to be an internet specific related task, so what you observe is interesting.

    - - - Updated - - -

    I am not suggesting you delete it : Enable or Disable SuperFetch in Windows

    - - - Updated - - -

    What are you using to determine that SysMain is active or not? Are you saying SysMain service does not start until you connect to the internet?
     
    steve108, Jun 26, 2023
    #4
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What is sysmain, and why does it sometimes use a bunch of CPU? Can I disable it, and what...

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