Windows 10 1809 Benchmarks. The Spectre patch kills performance.

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  1. Posts : 11
    Windows 10
       #1

    Windows 10 1809 Benchmarks. The Spectre patch kills performance.


    Everyone run for their AMD machines, this Spectre patch in 1809 is crucifying machine performance.

    This is a small portion of benchmarking numbers from our MFC CAD application. It's getting on in years and doesn't use any GPU acceleration. Even an 1809 machine without the Spectre patch performs badly against a 1709 build.

    OUTSIDE LIMITS test "adviser\analysis\analyseAllRules"
    8 ( 4.55 ) secs in "Win10_1709"
    13 ( 7.55 ) secs in "Win10_1809_NoSpectre"
    22 ( 11.25 ) secs in "Win10_64_1809_WSpectre.htm"

    OUTSIDE LIMITS test "adviser\analysis\analyseOneRule"
    8 ( 4.80 ) secs in "Win10_1709"
    11 ( 8.02 ) secs in "Win10_1809_NoSpectre"
    20 ( 11.98 ) secs in "Win10_64_1809_WSpectre.htm"

    OUTSIDE LIMITS test "adviser\analysis\filename_invalidForPred"
    8 ( 4.69 ) secs in "Win10_1709"
    11 ( 7.80 ) secs in "Win10_1809_NoSpectre"
    22 ( 11.86 ) secs in "Win10_64_1809_WSpectre.htm"

    OUTSIDE LIMITS test "adviser\analysis\report"
    8 ( 4.59 ) secs in "Win10_1709"
    11 ( 7.63 ) secs in "Win10_1809_NoSpectre"
    20 ( 11.50 ) secs in "Win10_64_1809_WSpectre.htm"

    OUTSIDE LIMITS test "adviser\decouplingFiles\AN-Pins_NoPart"
    7 ( 4.45 ) secs in "Win10_1709"
    11 ( 7.59 ) secs in "Win10_1809_NoSpectre"
    20 ( 11.83 ) secs in "Win10_64_1809_WSpectre.htm"

    OUTSIDE LIMITS test "adviser\decouplingFiles\analyseBrowse"
    8 ( 5.25 ) secs in "Win10_1709"
    11 ( 8.06 ) secs in "Win10_1809_NoSpectre"
    19 ( 11.66 ) secs in "Win10_64_1809_WSpectre.htm"
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  2. CountMike's Avatar
    Posts : 18,372
    W10+Developer Insider + Linux
       #2

    Didn't notice any performance drop yet let alone anything drastic. Some old dual core may be affected but not my Ryzen or FX 4350.
      My Computers

  3. jimbo45's Avatar
    Posts : 10,489
    Windows / Linux : Arch Linux
       #3

    Hi folks

    I'd call time on this until we get the latest 1809 when it's re-released. Who knows what Ms found that they had to pull the release.

    Judging by the experience of posters on TF I don't think many - if any - suffered the "data loss" problem which was bandied about in the media. - There must have been some other quite severe defects which Ms are keeping to themselves so I wouldn't judge any benchmarks with this 1809 release - wait until we get the new one.

    The Skip ahead is a good one to test -- you can download via UUPDUMP if you aren't enrolled in the Skip Ahead release program.

    Cheers
    jimbo
      My Computer

  4. fireberd's Avatar
    Posts : 2,301
    Win 10 Pro, 20H2
       #4

    I haven't noticed any drop in performance on my i7 6700K desktop that has all the Spectre patches (and 1809). I use my desktop for my recording studio and that still works as fast as it did before the patches.

    I read, on another forum, that one of the problems with 1809 was the Document loss and that problem is suspected to be those that use one drive. I don't use one drive and did not have any Document loss with 1809.

    FWIW, Intel CPU systems have better (lower) audio latency than Ryzen systems.
      My Computers

  5. TairikuOkami's Avatar
    Posts : 4,682
    Windows Home Dev 21xxx x64
       #5

    Some people solved it by disabling HPET (High Precision Event Timer) and noticed 30% performance increase.
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  6. CountMike's Avatar
    Posts : 18,372
    W10+Developer Insider + Linux
       #6

    TairikuOkami said:
    Some people solved it by disabling HPET (High Precision Event Timer) and noticed 30% performance increase.
    HPET and timer that was apparently changed in 1809. I'm looking at it now.
    Some hints:
    After Windows 10 (1809 October) update... unknown timer ? : Amd
    Windows System Timer Tool - a fix for stutter in games? | NotebookReview
    Windows System Timer Tool | vvvv
      My Computers

  7. Cliff S's Avatar
    Posts : 25,562
    Win10 Pro, Win10 Pro N, Win10 Home, Windows 8.1 Pro, Ubuntu
       #7

    I just did timer tests with 2 programs, and there are no problems(with my system anyhow).

    Top test >
    WinTimerTester version 1.1

    Bottom test > CPU-Z
    Windows 10 1809 Benchmarks. The Spectre patch kills performance.-image.png
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  8. CountMike's Avatar
    Posts : 18,372
    W10+Developer Insider + Linux
       #8

    You din't have an AMD system.
      My Computers

  9. TairikuOkami's Avatar
    Posts : 4,682
    Windows Home Dev 21xxx x64
       #9

    Thanks. Great tool ,when I changed it to 0.5ms, the latency went down by ~1000, I guess that is good?!
    Attached Thumbnails Attached Thumbnails Windows 10 1809 Benchmarks. The Spectre patch kills performance.-capture_10072018_140128.jpg  
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  10. Cliff S's Avatar
    Posts : 25,562
    Win10 Pro, Win10 Pro N, Win10 Home, Windows 8.1 Pro, Ubuntu
       #10

    CountMike said:
    You din't have an AMD system.
    True, but these are two tools Team Red users can try too.

    When doing timer testing, you need to multitask.
    A couple of browsers on(streaming YouTube in one browser, the other browser on the forums maybe, open a couple of apps and a game or graphics program etc...

    This way the windows system timers(yes it is plural as there are a few different ones actually) and HPET get properly tested.
    In device manager you can access:
    System Timer(can be disabled)
    CMOS/real time clock(CANNOT be disabled, only uninstalled, so leave this alone)
    High Precision Event Time(HPET)(can be disabled in Device Manager also, no need to go to BIOS)

    Now for information on how Windows now handles timers/ and how it has in the past/and what the different times do: Acquiring high-resolution time stamps
      My Computers


 
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