1. #1
    xilolee's Avatar
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    POSTING INSTRUCTIONS for DPC/ISR latency, stuttering, cracks/pops

    Co-author and topic starter: Admin writhziden

    Please use the Windows Performance Analyzer (WPA) to provide us with your trace file.
    The trace file will probably be too large to upload here, so host it from a third party site like Dropbox or Microsoft OneDrive.
    You can check the original tutorial for Windows 7: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8) (click).
    By the way, very similar steps can be used with the Windows 10 (and they are explained, with pictures, in following steps, at points E and F).



    1. Please provide answers for (answer the best that you can):
      Read More:
    2. Run msinfo32
      Read More:
    3. Open and run DxDiag.exe
      Read More:
    4. Retrieve System Information, using speccy
      Read More:
    5. Download and install the Windows Software Development Kit (SDK) for Windows 10(click).
      Currently it's named winsdksetup.exe, size 1.13MB; but this can change when newer versions are released.
      Check the instructions I made for you:
      Read More:
    6. You can generate a new trace with this command, from an elevated command prompt window:
      Code:
      xperf -on DiagEasy
      In case you don't know how to open an elevated command prompt in windows 10, these are the available methods:
      Read More:
      Wait some time (Niemiro said: "Wait until the computer has gone through a period of stuttering slowness") and then:
      Code:
      xperf -d "%userprofile%\Desktop\trace.etl"
      (You should find the file trace.etl on your desktop, when it finishes)
    7. Zip (no RAR, please) all the files up: trace.etl, msinfo32.nfo and DxDiag.txt (you should find them on the Desktop of your administrator account) and attach them to your next post.
      Check MicroSoft Support How-To: Zip and unzip files (click) if you don't know how to zip files.
      Don't forget to attach the link to your speccy snapshot.
    Last edited by xilolee; 12-24-2017 at 07:52 AM.


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  2. #2

    Re: POSTING INSTRUCTIONS for DPC/ISR latency, stuttering, cracks/pops

    Hello,

    Thanks for the information and reply.
    I got up to Step E. My Laptop has Windows 7, not Windows 10. Step E says Windows 10 SDK... When I was downloading, the windows said "download" instead of "Install". I found a folder called Installers with lots of executable files.

    Therefore, I couldn’t run xperf –on DiagEasy… It says that ‘xperf’ is not recognized as an internal or external program, operable program or batch file.
    I installed Windows Performance Tool Kit but it was called now WindowsKits/10/WindowsSDK. There are several executable files in a folder called Installers. Should I install all of them?

    I could not go forward from step E. Can you please help me explaining what can be wrong?
    In the meantime, this is the information I gathered from the previous steps: Laptop issues
    Many thanks, and kind regards,

  3. #3
    Sysnative Staff
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    Re: POSTING INSTRUCTIONS for DPC/ISR latency, stuttering, cracks/pops

    Hi asintoras,

    If you installed WPT, you could open a command prompt in the folder with xperf.exe and run the command in it.

  4. #4

    Re: POSTING INSTRUCTIONS for DPC/ISR latency, stuttering, cracks/pops

    It just does not work... From what I see, the link you posted was for Windows 10 and I have Windows 7...
    The version for Windows 7 is called differently: Windows Automated Installation Kit (AIK). I am installing it right now and will check it out.

  5. #5

    Re: POSTING INSTRUCTIONS for DPC/ISR latency, stuttering, cracks/pops

    I tried installing the AIK but it did not work either, as it was asking for a disc to burn the image and then said the image was too big for the disc and failed (the CD was new of course).
    I updated the questionnaire in the Dropbox folder with a PDF showing the folder structure of what I downloaded, which apparently it's something else, despite being from the link you provided.

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