1. #1

    [W10V1703b15063 x64] DPC Storport & Dgxkrnl

    I've been having this issue for over an month now; Audio popping with simultanious video FPS drops at around 3 second intervals, if I'm lucky. I have read and tried numerous things found on this site and a few others.

    * All drivers are updated and many were even fully wiped off and reinstalled fresh ( GPU, Ethernet, realtech audio, chipsets, and a few others )
    * BIOS is updated
    * windows is updated

    Here are the Dxdiags, MS info, another diagnostic data prepped by my ethernet driver program manager thing( killer networking) and traces that I have prepared
    Dropbox - DiagnosticData.txt
    Dropbox - DxDiag.txt
    Dropbox - msinfo32.nfo
    Dropbox - trace.etl

    And here is what Latencymon has to blabble about________________________________________________________________________________________________________
    CONCLUSION
    _________________________________________________________________________________________________________
    Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
    LatencyMon has been analyzing your system for 0:47:44 (h:mm:ss) on all processors.


    _________________________________________________________________________________________________________
    SYSTEM INFORMATION
    _________________________________________________________________________________________________________
    Computer name: SAMMYY-PC
    OS version: Windows 10 , 10.0, build: 15063 (x64)
    Hardware: MS-7978, MSI, Z170A GAMING M3 (MS-7978)
    CPU: GenuineIntel Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
    Logical processors: 8
    Processor groups: 1
    RAM: 16344 MB total


    _________________________________________________________________________________________________________
    CPU SPEED
    _________________________________________________________________________________________________________
    Reported CPU speed: 4008 MHz
    Measured CPU speed: 1 MHz (approx.)

    Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.

    WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature.



    _________________________________________________________________________________________________________
    MEASURED INTERRUPT TO DPC LATENCIES
    _________________________________________________________________________________________________________
    The interrupt to DPC latency reflects the measured interval in which a DPC could execute in response to a hardware request from the moment the interrupt service routine started execution.

    Highest measured interrupt to DPC latency (s): 100622.959758
    Average measured interrupt to DPC latency (s): 5.840077


    _________________________________________________________________________________________________________
    REPORTED ISRs
    _________________________________________________________________________________________________________
    Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

    Highest ISR routine execution time (s): 172.551647
    Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

    Highest reported total ISR routine time (%): 0.117895
    Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

    Total time spent in ISRs (%) 0.150407

    ISR count (execution time <250 s): 5443896
    ISR count (execution time 250-500 s): 0
    ISR count (execution time 500-999 s): 0
    ISR count (execution time 1000-1999 s): 0
    ISR count (execution time 2000-3999 s): 0
    ISR count (execution time >=4000 s): 0


    _________________________________________________________________________________________________________
    REPORTED DPCs
    _________________________________________________________________________________________________________
    DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.

    Highest DPC routine execution time (s): 100813.278693
    Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

    Highest reported total DPC routine time (%): 1.425070
    Driver with highest DPC total execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

    Total time spent in DPCs (%) 1.726195

    DPC count (execution time <250 s): 14219057
    DPC count (execution time 250-500 s): 0
    DPC count (execution time 500-999 s): 4
    DPC count (execution time 1000-1999 s): 0
    DPC count (execution time 2000-3999 s): 0
    DPC count (execution time >=4000 s): 0


    _________________________________________________________________________________________________________
    REPORTED HARD PAGEFAULTS
    _________________________________________________________________________________________________________
    Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.


    Process with highest pagefault count: none

    Total number of hard pagefaults 0
    Hard pagefault count of hardest hit process: 0
    Highest hard pagefault resolution time (s): 0.0
    Total time spent in hard pagefaults (%): 0.0
    Number of processes hit: 0


    _________________________________________________________________________________________________________
    PER CPU DATA
    _________________________________________________________________________________________________________
    CPU 0 Interrupt cycle time (s): 231.765555
    CPU 0 ISR highest execution time (s): 172.551647
    CPU 0 ISR total execution time (s): 34.111802
    CPU 0 ISR count: 5377184
    CPU 0 DPC highest execution time (s): 100612.412176
    CPU 0 DPC total execution time (s): 161.504612
    CPU 0 DPC count: 12827997
    _________________________________________________________________________________________________________
    CPU 1 Interrupt cycle time (s): 61.092869
    CPU 1 ISR highest execution time (s): 170.213323
    CPU 1 ISR total execution time (s): 0.333227
    CPU 1 ISR count: 61268
    CPU 1 DPC highest execution time (s): 100634.784681
    CPU 1 DPC total execution time (s): 14.601703
    CPU 1 DPC count: 149230
    _________________________________________________________________________________________________________
    CPU 2 Interrupt cycle time (s): 109.111618
    CPU 2 ISR highest execution time (s): 75.199601
    CPU 2 ISR total execution time (s): 0.010273
    CPU 2 ISR count: 2776
    CPU 2 DPC highest execution time (s): 100662.204341
    CPU 2 DPC total execution time (s): 68.225896
    CPU 2 DPC count: 389897
    _________________________________________________________________________________________________________
    CPU 3 Interrupt cycle time (s): 68.441712
    CPU 3 ISR highest execution time (s): 8.019960
    CPU 3 ISR total execution time (s): 0.006989
    CPU 3 ISR count: 2668
    CPU 3 DPC highest execution time (s): 100690.881238
    CPU 3 DPC total execution time (s): 19.556578
    CPU 3 DPC count: 133987
    _________________________________________________________________________________________________________
    CPU 4 Interrupt cycle time (s): 94.232321
    CPU 4 ISR highest execution time (s): 0.0
    CPU 4 ISR total execution time (s): 0.0
    CPU 4 ISR count: 0
    CPU 4 DPC highest execution time (s): 100813.278693
    CPU 4 DPC total execution time (s): 57.318410
    CPU 4 DPC count: 222822
    _________________________________________________________________________________________________________
    CPU 5 Interrupt cycle time (s): 57.613867
    CPU 5 ISR highest execution time (s): 0.0
    CPU 5 ISR total execution time (s): 0.0
    CPU 5 ISR count: 0
    CPU 5 DPC highest execution time (s): 100671.922655
    CPU 5 DPC total execution time (s): 11.831844
    CPU 5 DPC count: 120953
    _________________________________________________________________________________________________________
    CPU 6 Interrupt cycle time (s): 83.213087
    CPU 6 ISR highest execution time (s): 0.0
    CPU 6 ISR total execution time (s): 0.0
    CPU 6 ISR count: 0
    CPU 6 DPC highest execution time (s): 100630.433633
    CPU 6 DPC total execution time (s): 38.230561
    CPU 6 DPC count: 182190
    _________________________________________________________________________________________________________
    CPU 7 Interrupt cycle time (s): 78.954842
    CPU 7 ISR highest execution time (s): 0.0
    CPU 7 ISR total execution time (s): 0.0
    CPU 7 ISR count: 0
    CPU 7 DPC highest execution time (s): 100632.229541
    CPU 7 DPC total execution time (s): 24.248981
    CPU 7 DPC count: 197284
    _________________________________________________________________________________________________________
    [W10V1703b15063 x64] DPC Storport &amp; Dgxkrnl-d457be080683ea57194d390e13184181-png


    please help x.x this is driving me insane!


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  2. #2
    xilolee's Avatar
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        ASROCK FM2A88M Pro3+ chipset A88X Bolton-D4
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        A10-7800, 4 CPU, 4 thr, 65/45W, FM2+, 28nm, Steamroller/Kaveri
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        RealTek ALC662 (integrated in MB)
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        Windows 10 Home/Standard x64

    Re: DPC latency on Storport.sys and Dgxkrnl.sys

    Hi Kastriia.

    Try to disable hyperthreading, eist/speedstep and intel turbo boost in your bios settings.
    I'd also download/install the intel RST software present in your manufacturer website (removing the actual one, that you probably took from drivereasy...).

    Check Support For Z170A GAMING M3 | Motherboard - The world leader in motherboard design | MSI Global

    Are you using a SAMSUNG SSD?
    Last edited by xilolee; 09-23-2017 at 11:24 AM.

  3. #3

    Re: DPC latency on Storport.sys and Dgxkrnl.sys

    No its not a samsung SSD, I am going through the steps again. I did it once but it caused me to have to system restore when it wouldnt boot my PC anymore on the RST software part.

  4. #4

    Re: DPC latency on Storport.sys and Dgxkrnl.sys

    Its a crucial SSD. I did all the steps suggested so far and no change at all to my LatMon scans.

  5. #5
    Moderator
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    Windows Update Senior Analyst
    softwaremaniac's Avatar
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    • specs System Specs
      • Motherboard:
        ASUS MAXIMUS ROG HERO X
      • CPU:
        Intel Core i7-8700K 3.7GHz
      • Memory:
        Crucial 2x8GB DDR4 2666 MHz
      • Graphics:
        Gigabyte GTX 1080 G1 Gaming 8 GB
      • Sound Card:
        Asus Xonar DSX
      • Hard Drives:
        WD Caviar Black 1TB SATA III 7200rpm, WD Caviar Black 6TB SATA III 7200rpm
      • Disk Drives:
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    Re: DPC latency on Storport.sys and Dgxkrnl.sys

    Which USB devices do you have connected to your system?

  6. #6

    Re: [W10V1703b15063 x64] DPC Storport & Dgxkrnl

    headset ( steelseries ), Logitech mouse, Blackwidow keyboard

  7. #7
    Moderator
    BSOD Kernel Dump Analyst
    Windows Update Senior Analyst
    softwaremaniac's Avatar
    Join Date
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    • specs System Specs
      • Motherboard:
        ASUS MAXIMUS ROG HERO X
      • CPU:
        Intel Core i7-8700K 3.7GHz
      • Memory:
        Crucial 2x8GB DDR4 2666 MHz
      • Graphics:
        Gigabyte GTX 1080 G1 Gaming 8 GB
      • Sound Card:
        Asus Xonar DSX
      • Hard Drives:
        WD Caviar Black 1TB SATA III 7200rpm, WD Caviar Black 6TB SATA III 7200rpm
      • Disk Drives:
        Samsung 960 Evo 256GB NVME PCIe
      • Power Supply:
        Corsair HX 750W 80+ Platinum
      • Case:
        Fractal Design Define R6
      • Cooling:
        Noctua NH-D14
      • Display:
        Philips Brilliance BDM4065UC 4K 3840x2160
      • Operating System:
        Windows 10 Pro 1803 x64

    Re: [W10V1703b15063 x64] DPC Storport & Dgxkrnl

    Please try unplugging them while obeserving latency to see if it makes any difference.

  8. #8

    Re: [W10V1703b15063 x64] DPC Storport & Dgxkrnl

    No change to the DPC routine execution time. THis one seems so only spike once at the start of the scan and then nothing. The Process latency still continues to jump up every 2-5 seconds while unplugging each

  9. #9

    Re: [W10V1703b15063 x64] DPC Storport & Dgxkrnl

    Bumping. A few days ago I changed my ethernet/audio and gpu from PCI reg keys to MSI and it worked for a time. But after shutting down my pc and rebooting. Those changes are still there and the popping is back.. still looking for a solution

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