Wdf01000.sys Latency - Windows 10

Hi,

Wdf01000.sys is a Microsoft driver file. The wdf01000.sys process should not be deleted or prevented from loading each time Windows loads.

We would like to know more about your wdf01000.sys and latency concern:

• Were you getting errors with wdf01000.sys? If yes, Can you send us a screenshot?
• Which program or application were you using in audio recording?
• What equipment or devices were connected to your PC when you were recording audio?

In the meantime, check out this article for tips on how to improve PC performance.

Looking forward to your response.

Here is what is reported to me while I am using Ableton Live 9 and I am using a MOTU mk3 hybrid interface. I am able to monitor the output audio and the interface is not detecting the audio interruptions which tells me the interruptions happen between my interface and my computer. Also I have Windows 10 Pro if that changes anything. I only ran this test for 15 seconds and here are the results:

_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (µs):   2194.133612
Average measured interrupt to process latency (µs):   10.228841

Highest measured interrupt to DPC latency (µs):       2171.155831
Average measured interrupt to DPC latency (µs):       4.663471

_________________________________________________________________________________________________________
 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 (µs):              16290.754148
Driver with highest ISR routine execution time:       Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total ISR routine time (%):          1.111090
Driver with highest ISR total time:                   Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in ISRs (%)                          1.139980

ISR count (execution time <250 µs):                   159942
ISR count (execution time 250-500 µs):                0
ISR count (execution time 500-999 µs):                81
ISR count (execution time 1000-1999 µs):              3
ISR count (execution time 2000-3999 µs):              0
ISR count (execution time >=4000 µs):                 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 (µs):              99012.881448
Driver with highest DPC routine execution time:       Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total DPC routine time (%):          2.076374
Driver with highest DPC total execution time:         Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%)                          2.468677

DPC count (execution time <250 µs):                   250851
DPC count (execution time 250-500 µs):                0
DPC count (execution time 500-999 µs):                133
DPC count (execution time 1000-1999 µs):              43
DPC count (execution time 2000-3999 µs):              18
DPC count (execution time >=4000 µs):                 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 (µs):          0.0
Total time spent in hard pagefaults (%):              0.0
Number of processes hit:                              0

***Update***

I have removed the interface from the equation and Ableton live 9 for the past week. I am now only trying basics tasks like play audio from iTunes and have the browser open. However I am still experiencing latency from the same driver as well as some other Microsoft drivers.

_________________________________________________________________________________________________________

MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (µs):   573.955628
Average measured interrupt to process latency (µs):   7.923096

Highest measured interrupt to DPC latency (µs):       568.088961
Average measured interrupt to DPC latency (µs):       3.138844


_________________________________________________________________________________________________________
 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 (µs):              13956.344495
Driver with highest ISR routine execution time:       Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total ISR routine time (%):          0.016099
Driver with highest ISR total time:                   ataport.SYS - ATAPI Driver Extension, Microsoft Corporation

Total time spent in ISRs (%)                          0.046577

ISR count (execution time <250 µs):                   192666
ISR count (execution time 250-500 µs):                0
ISR count (execution time 500-999 µs):                20
ISR count (execution time 1000-1999 µs):              7
ISR count (execution time 2000-3999 µs):              8
ISR count (execution time >=4000 µs):                 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 (µs):              4336.411463
Driver with highest DPC routine execution time:       ataport.SYS - ATAPI Driver Extension, Microsoft Corporation

Highest reported total DPC routine time (%):          0.227243
Driver with highest DPC total execution time:         dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in DPCs (%)                          0.695677

DPC count (execution time <250 µs):                   1609465
DPC count (execution time 250-500 µs):                0
DPC count (execution time 500-999 µs):                805
DPC count (execution time 1000-1999 µs):              28
DPC count (execution time 2000-3999 µs):              10
DPC count (execution time >=4000 µs):                 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 (µs):          0.0
Total time spent in hard pagefaults (%):              0.0
Number of processes hit:                              0

Hi Jose, 

I have the exact same problem. I am using the DJ software Traktor with a Traktor Kontrol S8 Dj controller connected via usb 3.0. 

Wdf01000.sys seems also to be the problem for me. I runned LatencyMon, and it showed me that it was the problem, with the highest ISR routine DPC Routine execution time.

I manage to reduce the amount of lag and execution time by disabling my network adapters and audio device in device manager (Realtek) as Im using the audio device in my controller. 

I somewhat solve the problem, but it's still there after some time playing. I would like to find another way to solve this.

My computer settings performance are at the best.

I have an Asus ROG strix GL553V brand 

That picture is with adapters disabled

(LatencyMon)

I can still hear distortion in audio

Best regards 

Vincent

any suggestions for me on how to fix? ive tried disabling audio adapters, networks, and some drivers aswell. im currently using focusrite audio interface everything is updated 

Hi,

where is the answer for this article/problem?

Best regards

Hampus

Hi Emmanuel,

For us to effectively assist you regarding this latency issue you're having with your Windows 10 computer, can you tell us if you have tried all the resolutions provided in this thread? If you haven't, kindly do so and update us with the result. Also, can you tell us all the troubleshooting steps (if there's any) that you have tried to resolve your concern? This is for us to avoid repeating them to you.

We'll be waiting for your reply.

Lizetta Ags, please hear us out.

This DPC latency issue is a problem that's been persisting in Windows 10 since 2015, as far as google can tell, and steadily, with each and every new system update, more and more people are encountering this problem. It's very frustrating that it seems like these updates are untested, and we wish you would relay this to the development teams at Microsoft.

I have literally just re-installed Windows 10, and kept the Ethernet cord disconnected and had no wireless card plugged in before, during, and after the installation to ensure no updates are downloaded or installed.

Despite that, I still get, at minimum, 1000 µs DPC latency from wdf01000sys, seen in this screenshot (from DPC Latency Checker):

And this text readout from LatencyMon.exe:

_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be suitable for handling real-time audio and other tasks without dropouts. 
LatencyMon has been analyzing your system for  0:00:35  (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name:                                        DESKTOP-RUUBI5O
OS version:                                           Windows 10 , 10.0, build: 15063 (x64)
Hardware:                                             Z87X-UD4H, Gigabyte Technology Co., Ltd., Z87X-UD4H-CF
CPU:                                                  GenuineIntel Intel(R) Core(TM) i5-4670K CPU @ 3.40GHz
Logical processors:                                   4
Processor groups:                                     1
RAM:                                                  16241 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed:                                   3392 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 USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (µs):   116.523377
Average measured interrupt to process latency (µs):   6.536407

Highest measured interrupt to DPC latency (µs):       90.260336
Average measured interrupt to DPC latency (µs):       1.729982


_________________________________________________________________________________________________________
 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 (µs):              23.949882
Driver with highest ISR routine execution time:       USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

Highest reported total ISR routine time (%):          0.002485
Driver with highest ISR total time:                   Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in ISRs (%)                          0.002903

ISR count (execution time <250 µs):                   2038
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
_________________________________________________________________________________________________________
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):              81.571934
Driver with highest DPC routine execution time:       Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total DPC routine time (%):          0.037206
Driver with highest DPC total execution time:         Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%)                          0.089803

DPC count (execution time <250 µs):                   19745
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
_________________________________________________________________________________________________________
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
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s):                       0.193823
CPU 0 ISR highest execution time (µs):                23.949882
CPU 0 ISR total execution time (s):                   0.004070
CPU 0 ISR count:                                      2038
CPU 0 DPC highest execution time (µs):                81.571934
CPU 0 DPC total execution time (s):                   0.091309
CPU 0 DPC count:                                      16022
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s):                       0.086809
CPU 1 ISR highest execution time (µs):                0.0
CPU 1 ISR total execution time (s):                   0.0
CPU 1 ISR count:                                      0
CPU 1 DPC highest execution time (µs):                61.139151
CPU 1 DPC total execution time (s):                   0.016079
CPU 1 DPC count:                                      1668
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s):                       0.084548
CPU 2 ISR highest execution time (µs):                0.0
CPU 2 ISR total execution time (s):                   0.0
CPU 2 ISR count:                                      0
CPU 2 DPC highest execution time (µs):                67.214033
CPU 2 DPC total execution time (s):                   0.007757
CPU 2 DPC count:                                      855
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s):                       0.088412
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):                67.689564
CPU 3 DPC total execution time (s):                   0.010748
CPU 3 DPC count:                                      1200
_________________________________________________________________________________________________________

I'm a little confused why DPC Latency Checker says I have, at minimum, 1000 µs of latency, and LatencyMon says I have a max of 81.6 µs of latency, but I choose to believe DPC Latency Checker. There are several screenshots online people who have DPC Latency Checker reporting a low (<100 µs) latency.

I only have a microphone, a webcam, a keyboard, and mouse plugged in, and disconnecting the mic and webcam does not effect the latency, whatsoever.

Multiple restarts and using my motherboard's CMOS clear switch does not help.

I have Windows 10 installed on a RAID0 array.

Please help, this has been a problem for several weeks, now.

I'm sorry, this is literally my kind of luck and I hate it.

Minutes after submitting my post, I edited my power plan settings to the following:

• Disabled USB settings > USB selective suspend settings > Plugged in: Disabled.
• Turn off PCI Express > Link State Power Management > Plugged in: Off.

And then I shut down my system and turned it back on (not a Windows Key > Restart, manual shutdown, manual power button press.)

And when I did that, this is what I now see from DPC Latency Checker:

500 is better, but not acceptable. It should be below 100 for a freshly installed system, and I will now try to replace all Windows drivers with as many provided by my motherboard manfacturer (Gigabyte.)