Sometimes high DPC from nvlddmkm.sys, dxgkrnl.sys, CLASSPNP.SYS and very randomly and not often from Wdf01000.sys.

[Chocobit]

Hello everyone,
I'm going crazy here because I can't assess what's going on with the PC or whether its behavior is just normal. Sometimes, as mentioned above, I get spikes of up to 2,000 from the mentioned drivers. Sometimes it's Nvidia, other times DirectX, or classpnp. Right now, the PC has been running for over 4 hours. Of that, 2 hours idle and 2 hours gaming. Sometimes the spikes occur without any changes made to the drivers, etc. Sometimes after 2 minutes, sometimes, as seen in the pictures, not at all. The latest NVIDIA driver is the worst. With it, Nvidia is always at the forefront and constantly. I have uninstalled the Realtek sound driver, as it ALWAYS spikes with HDAD. What do you think is going on?


Operating System: Windows 11, 10.0, version 2009, build: 22631 (x64)
Motherboard brand and model: ASUS DARK HERO, 4602
CPU brand and model: AuthenticAMD AMD Ryzen 7 5800X3D 8-Core Processor
Graphics Card - Integrated or card band and model: ASUS TUF RTX 4090 OC
RAM brand, type, and number of sticks:2x16. Look at Pictures
Case brand and model: Fractal
PSU brand and model: BeQuiet 1000W
Main Drive(s): brand(s) and model(s): Samsung SSD 850 EVO.








_________________________________________________________________________________________________________
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 4:25:13 (h:mm:ss) on processors 0,1,2,3,4,5,6 and 7.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: GAMING
OS version: Windows 11, 10.0, version 2009, build: 22631 (x64)
Hardware: System Product Name, ASUS
BIOS: 4602
CPU: AuthenticAMD AMD Ryzen 7 5800X3D 8-Core Processor
Logical processors: 16
Processor groups: 1
Processor group size: 16
RAM: 32675 MB total


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CPU SPEED
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Reported CPU speed (WMI): 3401 MHz
Reported CPU speed (registry): 340 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.


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MEASURED INTERRUPT TO USER PROCESS LATENCIES
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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): 194,40
Average measured interrupt to process latency (µs): 3,825565

Highest measured interrupt to DPC latency (µs): 192,20
Average measured interrupt to DPC latency (µs): 1,180133


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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): 21,60
Driver with highest ISR routine execution time: ACPI.sys - ACPI-Treiber für NT, Microsoft Corporation

Highest reported total ISR routine time (%): 0,000477
Driver with highest ISR total time: Wdf01000.sys - Kernelmodustreiber-Frameworklaufzeit, Microsoft Corporation

Total time spent in ISRs (%) 0,000627

ISR count (execution time <250 µs): 1510010
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
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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): 612,390
Driver with highest DPC routine execution time: CLASSPNP.SYS - SCSI Class System Dll, Microsoft Corporation

Highest reported total DPC routine time (%): 0,051237
Driver with highest DPC total execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in DPCs (%) 0,09060

DPC count (execution time <250 µs): 38141270
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 236
DPC count (execution time 1000-2000 µs): 0
DPC count (execution time 2000-4000 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.

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 47485
Hard pagefault count of hardest hit process: 27529
Number of processes hit: 56


_________________________________________________________________________________________________________
PER CPU DATA
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CPU 0 Interrupt cycle time (s): 155,822888
CPU 0 ISR highest execution time (µs): 21,60
CPU 0 ISR total execution time (s): 1,597125
CPU 0 ISR count: 1509624
CPU 0 DPC highest execution time (µs): 612,390
CPU 0 DPC total execution time (s): 28,151473
CPU 0 DPC count: 7080425
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CPU 1 Interrupt cycle time (s): 37,393611
CPU 1 ISR highest execution time (µs): 1,550
CPU 1 ISR total execution time (s): 0,000273
CPU 1 ISR count: 386
CPU 1 DPC highest execution time (µs): 262,940
CPU 1 DPC total execution time (s): 0,386576
CPU 1 DPC count: 146170
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 19,862061
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): 89,940
CPU 2 DPC total execution time (s): 0,153830
CPU 2 DPC count: 73188
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 635,619380
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): 425,380
CPU 3 DPC total execution time (s): 201,704715
CPU 3 DPC count: 30702992
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 23,687177
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): 251,250
CPU 4 DPC total execution time (s): 0,052832
CPU 4 DPC count: 25978
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 25,288743
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): 243,780
CPU 5 DPC total execution time (s): 0,038636
CPU 5 DPC count: 22021
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 27,117563
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): 257,410
CPU 6 DPC total execution time (s): 0,112665
CPU 6 DPC count: 52973
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 27,462775
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): 264,90
CPU 7 DPC total execution time (s): 0,081966
CPU 7 DPC count: 37759
_________________________________________________________________________________________________________

 

[Chocobit]

Now I got the mentioned spikes. See attachement pls.