1.    09 Aug 2017 #1
    Join Date : Sep 2015
    Posts : 42
    Microsoft Windows 10 Home 64-bit

    Number of svchost.exe running


    In Process Explorer I see 70 (yes seventy) instances of svchost.exe running.
    some have threads (like ipoint.exe, itype.exe,..) which is OK, but most are not threaded.
    The system poses no problem and works fine (CPU use is zero)
    Is there a reason for that large number of svchost.exe instances and what causes it?
    Can or should anything be done?
    thanks for any answer,
    gabriël
      My ComputerSystem Spec
  2.    09 Aug 2017 #2
    Join Date : Jul 2015
    Posts : 3,694
    10 Pro
      My ComputerSystem Spec
  3.    09 Aug 2017 #3
    Join Date : Sep 2015
    Posts : 42
    Microsoft Windows 10 Home 64-bit
    Thread Starter

    thank you for your answer
      My ComputerSystem Spec
  4.    09 Aug 2017 #4
    Join Date : Jul 2015
    Posts : 3,694
    10 Pro

    You can revert it to run under a single job if you want - although I don't know what benefit (if any) would result.
    Run regedit.exe, go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control and create a 32Bit DWORD SvcHostSplitThresholdInKB and set it to a large number (larger compared to your install RAM).
    Did svchost.exe behaviour change in Windows 10 Creators Update (Build 1703)? - Super User
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  5.    09 Aug 2017 #5
    Join Date : Aug 2016
    S/E England
    Posts : 4,490
    10 Home x64 (1709) (10 Pro on 2nd pc)

    Good find. Most concise explanation yet from Microsoft about this phenomenon.
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  6.    10 Aug 2017 #6
    Join Date : Jul 2016
    Granite Bay, CA
    Posts : 706
    Windows 10 Professional

    The svchost.exe files are executables that are running Services within them.

    There are many YouTube videos that have people's suggestions on which Services to disable that are most likely not used by you. Disabling many Services should decrease the quantity of svchosts that are open. Here's a good video on which ones you could disable:
    What Windows 10 Services Can I Disable - YouTube

    But do keep note! Before disabling Services, write down all the ones that you are changing from:
    • Automatic to Disabled, and
    • Manual to Disabled
    Just in case!
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  7.    10 Aug 2017 #7
    Join Date : Jul 2015
    Posts : 3,694
    10 Pro

    Quote Originally Posted by pepanee View Post
    The svchost.exe files are executables that are running Services within them.
    No they really aren't. You need to know the difference between "executables", "files" and "services". Try reading the link above.

    Quote Originally Posted by pepanee View Post
    There are many YouTube videos that have people's suggestions on which Services to disable that are most likely not used by you. Disabling many Services should decrease the quantity of svchosts that are open. Here's a good video on which ones you could disable:
    What Windows 10 Services Can I Disable - YouTube

    But do keep note! Before disabling Services, write down all the ones that you are changing from:
    • Automatic to Disabled, and
    • Manual to Disabled
    Just in case!
    These links are rubbish. None of it is true - and has nothing to do with the question in any case.

    By all means disable a service (whether you know what it is for or not doesn't matter). Most likely you'll just break something apparently unconnected further down the line (as they aren't properly documented by MS) to save 0% CPU as it wasn't doing anything anyway.

    What is interesting is Server editions of Windows still don't split out these things - probably as you'd expect a server administrator to monitor things more (or perhaps memory is more important than on a client). It is an interesting difference anyway.
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