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Thread: Windows 10 causing issues with Ryzen platform

  1. #1
    Sage

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    Windows 10 causing issues with Ryzen platform

    There is a bug in windows 10 scheduler when it comes to how it handles ryzens processing.

    AMD Ryzen Performance Negatively Affected by Windows 10 Scheduler Bug

    it is pretty indepth and complicated and a couple of patches will be required to fix it.
    in that time it is only affecting windows 10. windows 7 is fine and mB makes are releasing
    windows 7 drivers as we speak.

    this could be affecting the gaming issues as well.

    Microsoft acknowledges AMD Ryzen performance issues on Windows 10, fix incoming

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    Re: Windows 10 causing issues with Ryzen platform

    Glad I stopped using it ages ago

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    Sage

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    Re: Windows 10 causing issues with Ryzen platform

    Quote Originally Posted by Cigar View Post
    Glad I stopped using it ages ago
    then why respond if you have nothing to add?
    there are people that are buying the ryzen platform.

    if they are running windows 10 there is an issue with it. the software is not handling the CPU properly and is going to take a
    update or two in order to fix.

    I believe this is what is causing a few of the issues with ryzen in gaming as well.

    it also speaks that once fixed and corrected that ryzen could be more powerful than intel at this point.

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    Outer space potato man

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    Re: Windows 10 causing issues with Ryzen platform

    From what I've gathered, it's not actually a scheduler "bug." The Windows scheduler is working the way it's supposed to. The problem is Ryzen's architecture. There are two sets of four cores on the 8-core models, and they have a sort of split cache setup. When the scheduler decides to shift a task from one core to another, if the new core is on a different CCX there's a latency that comes with shifting the cache over.

    The scheduler isn't programmed to be aware of this. It could be, but that comes at a cost. This is a task you want to have as simple as possible. Adding complexity to the scheduler can degrade performance overall.

    I think the burden is mostly going to be on software developers.
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    Sage

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    Re: Windows 10 causing issues with Ryzen platform

    Quote Originally Posted by Deuce View Post
    From what I've gathered, it's not actually a scheduler "bug." The Windows scheduler is working the way it's supposed to. The problem is Ryzen's architecture. There are two sets of four cores on the 8-core models, and they have a sort of split cache setup. When the scheduler decides to shift a task from one core to another, if the new core is on a different CCX there's a latency that comes with shifting the cache over.

    The scheduler isn't programmed to be aware of this. It could be, but that comes at a cost. This is a task you want to have as simple as possible. Adding complexity to the scheduler can degrade performance overall.

    I think the burden is mostly going to be on software developers.
    Scheduler is not optimized for ryzen as it is for intel.
    even Microsoft had to make changes for intel processing.

    so it will have to patch for ryzen as well.

    they will have to add to the logic so that it detect which platform is being used and uses the correct scheduler.

    without the optimization rzyen will never perform up to full standard.

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