L3 Cache Performance on Windows 11?

Discussion in 'Windows 11' started by Espionage724, Aug 19, 2021.

  1. GSDragoon

    GSDragoon MDL Novice

    Jul 2, 2011
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    Pretty sure this is just a bug with AIDA64. Anyone have numbers from other benchmarks or games that show the same regressions. I haven't been able to recreate any differences (Ryzen 3900X).
     
  2. RobrPatty

    RobrPatty MDL Expert

    Jul 23, 2009
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    What other benchmark tools are you using? The AIDA64 is latest version from website.
     
  3. BlackScout

    BlackScout MDL Member

    Aug 4, 2016
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  4. RobrPatty

    RobrPatty MDL Expert

    Jul 23, 2009
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  5. BlackScout

    BlackScout MDL Member

    Aug 4, 2016
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    Yep... I also saw no performance hit with SiSoftware Sandra on W11 under HVM (W10 Pro as host).
     
  6. AveYo

    AveYo MDL Expert

    Feb 10, 2009
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    to "works4me": its basic courtesy to test for hardware bugs under real machine, not virtualization
     
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  7. Espionage724

    Espionage724 MDL Expert

    Nov 7, 2009
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    #27 Espionage724, Sep 1, 2021
    Last edited: Sep 1, 2021
    (OP)
    I think the oddity here is that W11 ran on bare-metal with certain CPUs has bad L3 cache performance, whereas it seems fine on those same CPUs if W11 is being ran as a guest OS instead.
     
  8. AveYo

    AveYo MDL Expert

    Feb 10, 2009
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    not odd, it's by design - all those cpu virtualization features are meant for the host to drive most of the memory, i/o operations (for performance and data security) while the guest(s) simply passes through requests

    reversing it (w11 host, w10 guest) would probably make w10 suck at it instead (untested)

    I'm sure some intern at microsoft messed up a flag somewhere like they did with MM_DONT_ZERO_ALLOCATION and plagued games with stutters from v1703 till near eol 1803. The only question is if it's gonna take them 2+ years to acknowledge and fix it..
     
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  9. anyen

    anyen MDL Novice

    Apr 21, 2008
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    my cpu z multicore latest winsows 11 ryzen 5800x
    from
    multicore win 10 to win 11
    6800 to 6500
    single core from
    660 to 640

    amd still a lot of home work for windows 11 or microsoft fault because it is ok with win 10 performance but down with win 11

    tpm?
     
  10. Espionage724

    Espionage724 MDL Expert

    Nov 7, 2009
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    22449.1000 is available. I'll spin my own install at some point to try it, but I'd be interested in hearing if anything is different on that build from others.
     
  11. kotaless

    kotaless MDL Novice

    Apr 6, 2018
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    Good news. I wonder if MS will implement this to 22000?
     
  12. BlackScout

    BlackScout MDL Member

    Aug 4, 2016
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    Awesome stuff! Shame I have reverted it =p
     
  13. BlackScout

    BlackScout MDL Member

    Aug 4, 2016
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    I wonder if it's been fixed on .176 as well then.
    @wossner LMAO CL22
     
  14. anyen

    anyen MDL Novice

    Apr 21, 2008
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    nope .176 still the same but my other benchmark become normal only l3 sti need homework
     
  15. BlackScout

    BlackScout MDL Member

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    I'll probably dual-boot it since HVM isn't suitable for that
     
  16. FerrumMaster

    FerrumMaster MDL Junior Member

    Jun 5, 2012
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    Oh well, it is a HP Laptop... what else would you expect?

    But the speed is back on 22449.1000

    cachemem.png
     
  17. BlackScout

    BlackScout MDL Member

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  18. DontuZoru

    DontuZoru MDL Senior Member

    Mar 6, 2014
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    It's still broken in 22000.176, 22449.1000 is ok. I hope they implement the fix soon, otherwise i'm going back to Win10.
     
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