How many CPU Cores Mojave can handle ?

Discussion in 'macOS Mojave (10.14)' started by alohalo, May 8, 2019.

  1. alohalo macrumors newbie

    Joined:
    Nov 17, 2018
    #1
    Asking because off a small bet... Cant remember how to find the info in macOS so that's why I am asking.

    Years ago I already know how to find the info but I can't remember , macOS could run 48 hyper threaded cores without any issues years ago.
    How is it nowadays ? How many CPU Cores Mojave can handle ?
     
  2. SecuritySteve macrumors 6502a

    SecuritySteve

    Joined:
    Jul 6, 2017
    Location:
    California
    #2
    macOS supports 64 threads maximum, so 32 physical cores maximum these days.
     
  3. alohalo thread starter macrumors newbie

    Joined:
    Nov 17, 2018
    #3
    Where your info is coming from? I've extracted the kernel and some more stuff.

    There is no cpu core or thread limit.
     
  4. SecuritySteve macrumors 6502a

    SecuritySteve

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    Jul 6, 2017
    Location:
    California
    #4
  5. alohalo thread starter macrumors newbie

    Joined:
    Nov 17, 2018
    #5
    If you have a lot of cores they have to be synchronized but thats not related to any limit.
     
  6. SecuritySteve macrumors 6502a

    SecuritySteve

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    Jul 6, 2017
    Location:
    California
    #6
    If you read the full thread I linked, you'll see that after a certain thread count the system starts to kernel panic. It is a soft limit as I understand it, but still a limitation.
     
  7. alohalo thread starter macrumors newbie

    Joined:
    Nov 17, 2018
    #7
    Can prove that it's just a issue if you don't use tsc sync, so no limit at all.

    It's more a bug then a limit
     

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6 May 8, 2019