Windows 10: DPC Latency Issues, Audio Popping and Crackling Horribly

Hello. For about a week I have been experiencing glitchy, popping, crackling audio, This seems to mainly happen when streaming YouTube videos, Spotify, or any audio over internet while playing through my Focusrite Scarlett interface. When playing through headphones this problem goes away, and when I switch to the focusrite it will immediately break up and crackle again. I have done pretty much every single fix I have found on other forum posts, and while some things have reduced it slightly, nothing has fixed this problem. I believe this is a windows problem, when I run LatencyMon, I get ridic

:)

 

Audio Crackling/Popping and DPC Latency Issues

Yeah. I was considering that also, but I'm not sure which ones are good investments and have a tangible upgrade over the onboard Realtek ALC1200/1200P codec. Also, spending like ~$200 is sort of out of budget for me atm. Could you provide some options, if possible?

I did try this, didn't quite help but I do have an update to the situation.

Prior to browsing tenforums, I had my Motherboard manufacturers;
Realtek HD Universal Driver | Version: 6.0.9102.1 | Release Date: 2021-02-05

I found this thread Determine the HDA Realtek driver needed for your Audio
Which recommended me to download Version 6.0.9116.1 via the script provided; which I then upgraded to. I also updated used DDU to clean my GPU drivers and reinstalled the latest NVidia drivers version 461.92.

Today, I uninstalled and delete drivers for the Realtek (and let windows install whatever drivers it wants High Definition Audio Device in this case version 10.0.19041.264) and used DDU to clean the GPU and Realtek drivers.

After rebooting I was checking latency and it was fine during this time and the Intelligent Standby List Cleaner did seem to keep it under 500µs





Didn't run it for very long but looked fine and worked okay. Now to test if it was the audio or GPU drivers, however this time I installed the 462.07 (beta hotfix driver). Note, I didn't reinstall the Realtek Audio drivers only the GPU drivers with everything selected.
Results:
LatencyMon Stats:
____________________________________________________________________________________________________ _____
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 1:13:47 (h:mm:ss) on all processors.


____________________________________________________________________________________________________ _____
SYSTEM INFORMATION
____________________________________________________________________________________________________ _____
Computer name: DESKTOP-10PE5RG
OS version: Windows 10, 10.0, version 2009, build: 19042 (x64)
Hardware: MS-7C94, Micro-Star International Co., Ltd.
CPU: AuthenticAMD AMD Ryzen 5 3600 6-Core Processor
Logical processors: 12
Processor groups: 1
RAM: 32694 MB total


____________________________________________________________________________________________________ _____
CPU SPEED
____________________________________________________________________________________________________ _____
Reported CPU speed: 360 MHz

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.


____________________________________________________________________________________________________ _____
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): 6214.0
Average measured interrupt to process latency (µs): 4.887078

Highest measured interrupt to DPC latency (µs): 6206.20
Average measured interrupt to DPC latency (µs): 2.026143


____________________________________________________________________________________________________ _____
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): 54.360
Driver with highest ISR routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft
Corporation

Highest reported total ISR routine time (%): 0.003661
Driver with highest ISR total time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft
Corporation

Total time spent in ISRs (%) 0.003661

ISR count (execution time <250 µs): 3465372
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 0
ISR count (execution time 1000-2000 µs): 0
ISR count (execution time 2000-4000 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): 2050.080
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 462.07 ,
NVIDIA Corporation

Highest reported total DPC routine time (%): 0.119931
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 462.07 ,
NVIDIA Corporation

Total time spent in DPCs (%) 0.289060

DPC count (execution time <250 µs): 33398758
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 2038
DPC count (execution time 1000-2000 µs): 18
DPC count (execution time 2000-4000 µs): 5
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.

NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the
audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.

Process with highest pagefault count: nvcontainer.exe

Total number of hard pagefaults 70276
Hard pagefault count of hardest hit process: 32761
Number of processes hit: 82


____________________________________________________________________________________________________ _____
PER CPU DATA
____________________________________________________________________________________________________ _____
CPU 0 Interrupt cycle time (s): 306.098406
CPU 0 ISR highest execution time (µs): 34.040
CPU 0 ISR total execution time (s): 1.116597
CPU 0 ISR count: 1981217
CPU 0 DPC highest execution time (µs): 2050.080
CPU 0 DPC total execution time (s): 144.391583
CPU 0 DPC count: 31830514
____________________________________________________________________________________________________ _____
CPU 1 Interrupt cycle time (s): 45.049974
CPU 1 ISR highest execution time (µs): 54.360
CPU 1 ISR total execution time (s): 0.374910
CPU 1 ISR count: 609026
CPU 1 DPC highest execution time (µs): 617.630
CPU 1 DPC total execution time (s): 6.469992
CPU 1 DPC count: 798445
____________________________________________________________________________________________________ _____
CPU 2 Interrupt cycle time (s): 29.445605
CPU 2 ISR highest execution time (µs): 20.840
CPU 2 ISR total execution time (s): 0.00210
CPU 2 ISR count: 2540
CPU 2 DPC highest execution time (µs): 170.740
CPU 2 DPC total execution time (s): 0.214241
CPU 2 DPC count: 94298
____________________________________________________________________________________________________ _____
CPU 3 Interrupt cycle time (s): 28.794981
CPU 3 ISR highest execution time (µs): 1.080
CPU 3 ISR total execution time (s): 0.000005
CPU 3 ISR count: 6
CPU 3 DPC highest execution time (µs): 218.660
CPU 3 DPC total execution time (s): 0.187489
CPU 3 DPC count: 89707
____________________________________________________________________________________________________ _____
CPU 4 Interrupt cycle time (s): 28.019231
CPU 4 ISR highest execution time (µs): 0.0
CPU 4 ISR total execution time (s): 0.0
CPU 4 ISR count: 0
CPU 4 DPC highest execution time (µs): 182.670
CPU 4 DPC total execution time (s): 0.122538
CPU 4 DPC count: 46365
____________________________________________________________________________________________________ _____
CPU 5 Interrupt cycle time (s): 29.758376
CPU 5 ISR highest execution time (µs): 0.0
CPU 5 ISR total execution time (s): 0.0
CPU 5 ISR count: 0
CPU 5 DPC highest execution time (µs): 169.820
CPU 5 DPC total execution time (s): 0.072041
CPU 5 DPC count: 27466
____________________________________________________________________________________________________ _____
CPU 6 Interrupt cycle time (s): 28.530599
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 218.140
CPU 6 DPC total execution time (s): 0.127184
CPU 6 DPC count: 39426
____________________________________________________________________________________________________ _____
CPU 7 Interrupt cycle time (s): 24.433082
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 175.230
CPU 7 DPC total execution time (s): 0.081284
CPU 7 DPC count: 28178
____________________________________________________________________________________________________ _____
CPU 8 Interrupt cycle time (s): 29.768065
CPU 8 ISR highest execution time (µs): 27.030
CPU 8 ISR total execution time (s): 0.140934
CPU 8 ISR count: 300100
CPU 8 DPC highest execution time (µs): 146.290
CPU 8 DPC total execution time (s): 0.298817
CPU 8 DPC count: 99937
____________________________________________________________________________________________________ _____
CPU 9 Interrupt cycle time (s): 26.985502
CPU 9 ISR highest execution time (µs): 10.670
CPU 9 ISR total execution time (s): 0.017078
CPU 9 ISR count: 30717
CPU 9 DPC highest execution time (µs): 237.770
CPU 9 DPC total execution time (s): 0.120682
CPU 9 DPC count: 46252
____________________________________________________________________________________________________ _____
CPU 10 Interrupt cycle time (s): 34.527355
CPU 10 ISR highest execution time (µs): 35.330
CPU 10 ISR total execution time (s): 0.094457
CPU 10 ISR count: 170486
CPU 10 DPC highest execution time (µs): 591.450
CPU 10 DPC total execution time (s): 0.640723
CPU 10 DPC count: 141898
____________________________________________________________________________________________________ _____
CPU 11 Interrupt cycle time (s): 34.773366
CPU 11 ISR highest execution time (µs): 30.720
CPU 11 ISR total execution time (s): 0.198692
CPU 11 ISR count: 371280
CPU 11 DPC highest execution time (µs): 228.950
CPU 11 DPC total execution time (s): 0.839315
CPU 11 DPC count: 158333
____________________________________________________________________________________________________ _____







I ran this for about an hour and currently haven't had very many popping sounds, crackling or video playback being desynced from audio. Though, it peaks on launch of and usage duration of some program.

The weird thing is that I had already tried this tactic day 1 of the issue, but I only tried with GPU Driver version 461.72 and 461.92 with Realtek drivers version 6.0.9102.1 and the issue presisted then so I wasn't sure about the root cause.

At this point I'm guessing the main cause is NVidia Drivers conflicting with the 6.0.9102.1 and newer? I also haven't installed the Realtek drivers again yet, I want to leave it for a day or so and check how daily usage affect it's and if I haven't tested it for long enough.

Sorry about the massive wall of text, but I thought it might be important to post an update to my situation.

[UPDATE] Shortly after posting this around 09:57:11 UTC the video-audio desync return as well as more frequent popping. Guess the main cause is probably the nvidia drivers, is anyone able to recommend a version I could try?

 

Audio Crackling/Popping and DPC Latency Issues

Hi,

I seem to get Audio Crackling and Popping issues, after searching the web for a bit I noticed that this issue is generally tied to DPC Latency so I used LatencyMon to recorded for around 2 hours (stats below).

In my case it doesn't seem to happen immediately after start up generally around an hour of usage and I can easily notice it when video and audio during playback is desynced (and it happens gradually and usually ends with audio being 3ish seconds ahead of video) then the audio crackling begins.

I have tried a variety of solution including; upgrade/downgrading bios, updating/uninstalling/downgrading drivers for audio and gpu, disable HPET and dynamicTick, uninstalling updates or downloading the newest updates, etc. The usual steps to resolve issues. Unfortunately, nothing seems to help me in that regard and I haven't been able to find the cause.

Hopefully someone here can provide some suggestion on steps I should take to help resolve this issue.

Computer Info:
Mobo: MSI B550m Mortar Wifi
CPU: Ryzen 5 3600
GPU: Nvidia GTX 3060ti
Memory: Team Vulcan TUF Gaming DDR4-3200 (4x8GB)

Windows 10 20H2 OS Build: 19042.870

The soundcard itself is the one onboard. I have included the latest screenshot of LatencyMon and its stat page. Let me know if you would like more information.




____________________________________________________________________________________________________ ___
__
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. At least one detected
problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get
better results. 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 2:05:23 (h:mm:ss) on all processors.


____________________________________________________________________________________________________ ___
__
SYSTEM INFORMATION
____________________________________________________________________________________________________ ___
__
Computer name: DESKTOP-10PE5RG
OS version: Windows 10, 10.0, version 2009, build: 19042
(x64)
Hardware: MS-7C94, Micro-Star International Co., Ltd.
CPU: AuthenticAMD AMD Ryzen 5 3600 6-Core Processor
Logical processors: 12
Processor groups: 1
RAM: 32694 MB total


____________________________________________________________________________________________________ ___
__
CPU SPEED
____________________________________________________________________________________________________ ___
__
Reported CPU speed: 360 MHz

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.


____________________________________________________________________________________________________ ___
__
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): 14751.80
Average measured interrupt to process latency (µs): 7.605939

Highest measured interrupt to DPC latency (µs): 14748.10
Average measured interrupt to DPC latency (µs): 4.084324


____________________________________________________________________________________________________ ___
__
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): 85.750
Driver with highest ISR routine execution time: Wdf01000.sys - Kernel Mode Driver Framework
Runtime, Microsoft Corporation

Highest reported total ISR routine time (%): 0.003416
Driver with highest ISR total time: Wdf01000.sys - Kernel Mode Driver Framework
Runtime, Microsoft Corporation

Total time spent in ISRs (%) 0.003416

ISR count (execution time <250 µs): 4949409
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 0
ISR count (execution time 1000-2000 µs): 0
ISR count (execution time 2000-4000 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): 10265.580
Driver with highest DPC routine execution time: ntoskrnl.exe - NT Kernel & System, Microsoft
Corporation

Highest reported total DPC routine time (%): 0.229869
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver,
Version 461.92 , NVIDIA Corporation

Total time spent in DPCs (%) 0.449850

DPC count (execution time <250 µs): 39259699
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 65331
DPC count (execution time 1000-2000 µs): 12
DPC count (execution time 2000-4000 µs): 30
DPC count (execution time >=4000 µs): 6


____________________________________________________________________________________________________ ___
__
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.

NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are
likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to
see which programs were hit.

Process with highest pagefault count: msmpeng.exe

Total number of hard pagefaults 76779
Hard pagefault count of hardest hit process: 11989
Number of processes hit: 60


____________________________________________________________________________________________________ ___
__
PER CPU DATA
____________________________________________________________________________________________________ ___
__
CPU 0 Interrupt cycle time (s): 721.097961
CPU 0 ISR highest execution time (µs): 85.750
CPU 0 ISR total execution time (s): 1.036225
CPU 0 ISR count: 1650122
CPU 0 DPC highest execution time (µs): 2345.580
CPU 0 DPC total execution time (s): 378.732973
CPU 0 DPC count: 35312978
____________________________________________________________________________________________________ ___
__
CPU 1 Interrupt cycle time (s): 100.271767
CPU 1 ISR highest execution time (µs): 12.790
CPU 1 ISR total execution time (s): 1.015674
CPU 1 ISR count: 1500782
CPU 1 DPC highest execution time (µs): 7559.780
CPU 1 DPC total execution time (s): 20.329019
CPU 1 DPC count: 1897628
____________________________________________________________________________________________________ ___
__
CPU 2 Interrupt cycle time (s): 50.027886
CPU 2 ISR highest execution time (µs): 7.160
CPU 2 ISR total execution time (s): 0.090513
CPU 2 ISR count: 104869
CPU 2 DPC highest execution time (µs): 215.150
CPU 2 DPC total execution time (s): 1.463935
CPU 2 DPC count: 407941
____________________________________________________________________________________________________ ___
__
CPU 3 Interrupt cycle time (s): 46.290205
CPU 3 ISR highest execution time (µs): 5.010
CPU 3 ISR total execution time (s): 0.044678
CPU 3 ISR count: 48883
CPU 3 DPC highest execution time (µs): 1105.40
CPU 3 DPC total execution time (s): 0.727993
CPU 3 DPC count: 240668
____________________________________________________________________________________________________ ___
__
CPU 4 Interrupt cycle time (s): 49.749873
CPU 4 ISR highest execution time (µs): 5.760
CPU 4 ISR total execution time (s): 0.000765
CPU 4 ISR count: 797
CPU 4 DPC highest execution time (µs): 207.620
CPU 4 DPC total execution time (s): 0.642534
CPU 4 DPC count: 224781
____________________________________________________________________________________________________ ___
__
CPU 5 Interrupt cycle time (s): 42.804415
CPU 5 ISR highest execution time (µs): 2.210
CPU 5 ISR total execution time (s): 0.000083
CPU 5 ISR count: 85
CPU 5 DPC highest execution time (µs): 188.860
CPU 5 DPC total execution time (s): 0.236624
CPU 5 DPC count: 90969
____________________________________________________________________________________________________ ___
__
CPU 6 Interrupt cycle time (s): 47.821343
CPU 6 ISR highest execution time (µs): 2.380
CPU 6 ISR total execution time (s): 0.000036
CPU 6 ISR count: 28
CPU 6 DPC highest execution time (µs): 189.320
CPU 6 DPC total execution time (s): 0.492780
CPU 6 DPC count: 153232
____________________________________________________________________________________________________ ___
__
CPU 7 Interrupt cycle time (s): 45.385683
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 225.670
CPU 7 DPC total execution time (s): 0.255315
CPU 7 DPC count: 83451
____________________________________________________________________________________________________ ___
__
CPU 8 Interrupt cycle time (s): 51.064874
CPU 8 ISR highest execution time (µs): 6.480
CPU 8 ISR total execution time (s): 0.244546
CPU 8 ISR count: 504409
CPU 8 DPC highest execution time (µs): 10265.580
CPU 8 DPC total execution time (s): 0.635158
CPU 8 DPC count: 203570
____________________________________________________________________________________________________ ___
__
CPU 9 Interrupt cycle time (s): 46.948170
CPU 9 ISR highest execution time (µs): 4.260
CPU 9 ISR total execution time (s): 0.035395
CPU 9 ISR count: 57888
CPU 9 DPC highest execution time (µs): 10264.320
CPU 9 DPC total execution time (s): 0.329215
CPU 9 DPC count: 112626
____________________________________________________________________________________________________ ___
__
CPU 10 Interrupt cycle time (s): 59.317185
CPU 10 ISR highest execution time (µs): 5.220
CPU 10 ISR total execution time (s): 0.184837
CPU 10 ISR count: 309045
CPU 10 DPC highest execution time (µs): 10264.60
CPU 10 DPC total execution time (s): 0.930
CPU 10 DPC count: 255884
____________________________________________________________________________________________________ ___
__
CPU 11 Interrupt cycle time (s): 58.991265
CPU 11 ISR highest execution time (µs): 6.110
CPU 11 ISR total execution time (s): 0.431375
CPU 11 ISR count: 772501
CPU 11 DPC highest execution time (µs): 7576.350
CPU 11 DPC total execution time (s): 1.335925
CPU 11 DPC count: 341350
____________________________________________________________________________________________________ ___
__

 

DPC Latency Issue - Random audio popping/crackling

I have been having audio popping/crackling for a few months now. I also get random 3-10 second intervals of pure white noise/static come out of nowhere when watching a video or listening
to music.

I'm not sure how to fix it.

I've tried:

• 
  
  Running memtest(no problems)
  
  Resetting my cpu overclock
  
  Reinstalling audio drivers, updating mobo
  
  Turning off fast startup
  
  Changing/reverting audio formats
  
  Updating graphics driver
  
  and possibly a few others I don't remember.
  

Any help would be greatly appreciated. Thank you.

Pics of Latencymon:







_____________________________________________________________________

The Latencymon Log:

_________________________________________________________________________________________________________

CONCLUSION

_________________________________________________________________________________________________________

Your system seems to be having difficulty handling real-time audio and other tasks. You may experience drop outs, clicks or pops due to buffer underruns. 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 0:17:47 (h:mm:ss) on all processors.

_________________________________________________________________________________________________________

SYSTEM INFORMATION

_________________________________________________________________________________________________________

Computer name: SHAAN

OS version: Windows 10 , 10.0, build: 16299 (x64)

Hardware: MS-7A11, MSI, Z170A KRAIT GAMING 3X (MS-7A11)

CPU: GenuineIntel Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz

Logical processors: 4

Processor groups: 1

RAM: 16344 MB total

_________________________________________________________________________________________________________

CPU SPEED

_________________________________________________________________________________________________________

Reported CPU speed: 3504 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): 760.402271

Average measured interrupt to process latency (µs): 2.408340

Highest measured interrupt to DPC latency (µs): 758.941083

Average measured interrupt to DPC latency (µs): 0.908718

_________________________________________________________________________________________________________

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): 152.708333

Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 0.397360

Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0.426395

ISR count (execution time <250 µs): 1697693

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): 1493.638699

Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.370589

Driver with highest DPC total execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in DPCs (%) 0.955813

DPC count (execution time <250 µs): 13269454

DPC count (execution time 250-500 µs): 0

DPC count (execution time 500-999 µs): 337

DPC count (execution time 1000-1999 µs): 24

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): 67.692004

CPU 0 ISR highest execution time (µs): 152.708333

CPU 0 ISR total execution time (s): 17.89080

CPU 0 ISR count: 1593621

CPU 0 DPC highest execution time (µs): 1493.638699

CPU 0 DPC total execution time (s): 31.076181

CPU 0 DPC count: 9917883

_________________________________________________________________________________________________________

CPU 1 Interrupt cycle time (s): 15.246016

CPU 1 ISR highest execution time (µs): 105.669521

CPU 1 ISR total execution time (s): 0.311294

CPU 1 ISR count: 100636

CPU 1 DPC highest execution time (µs): 339.543379

CPU 1 DPC total execution time (s): 8.243974

CPU 1 DPC count: 2894304

_________________________________________________________________________________________________________

CPU 2 Interrupt cycle time (s): 5.443245

CPU 2 ISR highest execution time (µs): 9.460046

CPU 2 ISR total execution time (s): 0.003366

CPU 2 ISR count: 3436

CPU 2 DPC highest execution time (µs): 100.865297

CPU 2 DPC total execution time (s): 0.713309

CPU 2 DPC count: 232278

_________________________________________________________________________________________________________

CPU 3 Interrupt cycle time (s): 5.146945

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): 112.364726

CPU 3 DPC total execution time (s): 0.776172

CPU 3 DPC count: 225350

_________________________________________________________________________________________________________