DPC Issues WDF01000.sys

deni3d

New member
Joined
Jul 27, 2017
Posts
4
Probably beating a dead horse but. I've done tons of "fixes" for the DPC issues, and I'm still getting them.
Any suggestions?
I have HPET off in bios and in windows. I've done dynamictick disable. I've done TCP optimzer. I've done core unparking. I've done NVIDIA removal and clean installs. I'm a streamer and gamer and it is so aggravating to deal with FPS hiccups.

Thank you for your time and answers.

I have a EVGA 1070 SC.

_________________________________________________________________________________________________________
CONCLUSION
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Your system appears to be suitable for handling real-time audio and other tasks without dropouts.
LatencyMon has been analyzing your system for 0:00:43 (h:mm:ss) on processors 0,1,2 and 3.




_________________________________________________________________________________________________________
SYSTEM INFORMATION
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Computer name: DESKTOP-8R1OR0K
OS version: Windows 10 , 10.0, build: 15063 (x64)
Hardware: ASRock, B250M Pro4
CPU: GenuineIntel Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz
Logical processors: 8
Processor groups: 1
RAM: 16347 MB total




_________________________________________________________________________________________________________
CPU SPEED
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Reported CPU speed: 420 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 KERNEL TIMER LATENCIES
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This value represents the maximum measured latency of a perodically scheduled kernel timer.


Highest measured kernel timer latency (µs): 861.622752




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REPORTED ISRs
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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 (µs): 90.037381
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation


Highest reported total ISR routine time (%): 0.061953
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation


Total time spent in ISRs (%) 0.063693


ISR count (execution time <250 µs): 31647
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 0
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0




_________________________________________________________________________________________________________
REPORTED DPCs
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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 (µs): 229.242857
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation


Highest reported total DPC routine time (%): 0.051614
Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation


Total time spent in DPCs (%) 0.139831


DPC count (execution time <250 µs): 126451
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 0
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0




_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
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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 (µs): 0.0
Total time spent in hard pagefaults (%): 0.0
Number of processes hit: 0




_________________________________________________________________________________________________________
PER CPU DATA
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CPU 0 Interrupt cycle time (s): 0.738619
CPU 0 ISR highest execution time (µs): 87.771905
CPU 0 ISR total execution time (s): 0.212134
CPU 0 ISR count: 30885
CPU 0 DPC highest execution time (µs): 229.242857
CPU 0 DPC total execution time (s): 0.453305
CPU 0 DPC count: 121328
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 0.048504
CPU 1 ISR highest execution time (µs): 90.037381
CPU 1 ISR total execution time (s): 0.006968
CPU 1 ISR count: 759
CPU 1 DPC highest execution time (µs): 102.914286
CPU 1 DPC total execution time (s): 0.019660
CPU 1 DPC count: 2609
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 0.027950
CPU 2 ISR highest execution time (µs): 1.657619
CPU 2 ISR total execution time (s): 0.000004
CPU 2 ISR count: 3
CPU 2 DPC highest execution time (µs): 57.871667
CPU 2 DPC total execution time (s): 0.004830
CPU 2 DPC count: 1441
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 0.032251
CPU 3 ISR highest execution time (µs): 0.0
CPU 3 ISR total execution time (s): 0.0
CPU 3 ISR count: 0
CPU 3 DPC highest execution time (µs): 28.953571
CPU 3 DPC total execution time (s): 0.003224
CPU 3 DPC count: 1073
_________________________________________________________________________________________________________

Some screen shots of dpc meter and latencymon.
DPC latency checker.jpgDPCmeter.jpgdrivers.jpg
 
Please use the Windows Performance Analyzer 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.

Windows 10 SDK - Windows app development

https://www.sysnative.com/forums/wi...c-latency-issues-wpa-windows-vista-7-8-a.html (similar steps can be used with the Windows 10 WPA)


Please also provide your dxdiag and msinfo32 reports:

Open and run DxDiag.exe

This tool is used to collect info about devices to help troubleshoot problems with DirectX sound and video. A support person might ask for this info, or you might post it in a forum when you ask for help.


  • In Windows, select Start and enter dxdiag into the search box on the taskbar. Select dxdiag from the results.
  • In the tool, select Save All Information for an easily shared format.


Run msinfo32

Open an instance of elevated command prompt:
  • Log on to your Windows 10 computer using any account of your preference.
  • Once on the desktop screen, right-click the Start button.
  • From the context menu, click Command Prompt (Admin) or Windows PowerShell (Admin)
  • If you opened Windows PowerShell, type
    Code:
    cmd
    to start the Command Prompt

  • Type the following into the Command Prompt
    Code:
    msinfo32 /nfo %USERPROFILE%\Desktop\msinfo32.nfo
  • Zip the msinfo.nfo file up (found on the Desktop of your administrator account) and attach it to your next post
 
Did you have a hiccup while doing that scan? I see a slightly high latency due to your NVIDIA drivers, but not much else.

Have you tried different BIOS settings to see if any changes provide less latency?

Have you tried disabling your NVIDIA High Definition Audio device when not in use (Device Manager -> Sound, video and game controllers)


Make sure your display card is seated properly in your motherboard.
 
I have found the problem it is a Bios setting Called: Enhanced Memory Performance .

Something similar to the above. The user turned the Enhanced Memory Performance off and experienced less latency with it off.
 

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