H
HarryMecha
Hi, over the last few days out of the blue I started to hear weird crackling and popping noises during video and audio playback, I tried to investigate and check to see what the problem was myself, I stumbled upon LatencyMon that test DPC Latency, seems that my problem is due to my ndis.sys having an incredibly long DPC routine execution time, I have updated the BIOS and every driver I could find related to the issue but it doesn't seem to fix it, whenever I think it's getting better I have massive spikes. Here's the stats from LatencyMon after I ran it for 20 minutes:
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CONCLUSION
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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 0:21:48 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: HARRY-LAPTOP
OS version: Windows 10, 10.0, version 1909, build: 18363 (x64)
Hardware: Strix GL703GM_GL703GM, ASUSTeK COMPUTER INC.
CPU: GenuineIntel Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
Logical processors: 12
Processor groups: 1
RAM: 16306 MB total
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CPU SPEED
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Reported CPU speed: 2208 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): 122400.70
Average measured interrupt to process latency (µs): 7.419329
Highest measured interrupt to DPC latency (µs): 122396.20
Average measured interrupt to DPC latency (µs): 4.169295
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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): 209.755435
Driver with highest ISR routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Highest reported total ISR routine time (%): 0.015845
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
Total time spent in ISRs (%) 0.020728
ISR count (execution time <250 µs): 548734
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
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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): 122425.470109
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Highest reported total DPC routine time (%): 0.048005
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 457.30 , NVIDIA Corporation
Total time spent in DPCs (%) 0.166279
DPC count (execution time <250 µs): 4302105
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 713
DPC count (execution time 1000-2000 µs): 78
DPC count (execution time 2000-4000 µs): 67
DPC count (execution time >=4000 µs): 138
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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: microsoft.photos.exe
Total number of hard pagefaults 10556
Hard pagefault count of hardest hit process: 6253
Number of processes hit: 44
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 126.113859
CPU 0 ISR highest execution time (µs): 198.145833
CPU 0 ISR total execution time (s): 3.198229
CPU 0 ISR count: 541574
CPU 0 DPC highest execution time (µs): 122425.470109
CPU 0 DPC total execution time (s): 24.632331
CPU 0 DPC count: 4159514
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CPU 1 Interrupt cycle time (s): 77.443007
CPU 1 ISR highest execution time (µs): 209.755435
CPU 1 ISR total execution time (s): 0.056558
CPU 1 ISR count: 7160
CPU 1 DPC highest execution time (µs): 304.701087
CPU 1 DPC total execution time (s): 0.126696
CPU 1 DPC count: 7521
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CPU 2 Interrupt cycle time (s): 63.823917
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): 14326.753623
CPU 2 DPC total execution time (s): 0.231130
CPU 2 DPC count: 26235
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CPU 3 Interrupt cycle time (s): 71.681187
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): 177.130435
CPU 3 DPC total execution time (s): 0.025402
CPU 3 DPC count: 5898
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CPU 4 Interrupt cycle time (s): 57.713981
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): 86622.771739
CPU 4 DPC total execution time (s): 0.579870
CPU 4 DPC count: 34002
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CPU 5 Interrupt cycle time (s): 69.124442
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): 158.599638
CPU 5 DPC total execution time (s): 0.012482
CPU 5 DPC count: 3622
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CPU 6 Interrupt cycle time (s): 57.571521
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): 479.868659
CPU 6 DPC total execution time (s): 0.235917
CPU 6 DPC count: 28253
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CPU 7 Interrupt cycle time (s): 68.709382
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): 364.1250
CPU 7 DPC total execution time (s): 0.050274
CPU 7 DPC count: 8058
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CPU 8 Interrupt cycle time (s): 63.010706
CPU 8 ISR highest execution time (µs): 0.0
CPU 8 ISR total execution time (s): 0.0
CPU 8 ISR count: 0
CPU 8 DPC highest execution time (µs): 338.260870
CPU 8 DPC total execution time (s): 0.079827
CPU 8 DPC count: 11977
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CPU 9 Interrupt cycle time (s): 74.330280
CPU 9 ISR highest execution time (µs): 0.0
CPU 9 ISR total execution time (s): 0.0
CPU 9 ISR count: 0
CPU 9 DPC highest execution time (µs): 254.317029
CPU 9 DPC total execution time (s): 0.024898
CPU 9 DPC count: 3216
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CPU 10 Interrupt cycle time (s): 58.096266
CPU 10 ISR highest execution time (µs): 0.0
CPU 10 ISR total execution time (s): 0.0
CPU 10 ISR count: 0
CPU 10 DPC highest execution time (µs): 347.404891
CPU 10 DPC total execution time (s): 0.077355
CPU 10 DPC count: 10215
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CPU 11 Interrupt cycle time (s): 70.788779
CPU 11 ISR highest execution time (µs): 0.0
CPU 11 ISR total execution time (s): 0.0
CPU 11 ISR count: 0
CPU 11 DPC highest execution time (µs): 170.879529
CPU 11 DPC total execution time (s): 0.03330
CPU 11 DPC count: 4590
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Continue reading...
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CONCLUSION
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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 0:21:48 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: HARRY-LAPTOP
OS version: Windows 10, 10.0, version 1909, build: 18363 (x64)
Hardware: Strix GL703GM_GL703GM, ASUSTeK COMPUTER INC.
CPU: GenuineIntel Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
Logical processors: 12
Processor groups: 1
RAM: 16306 MB total
_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 2208 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): 122400.70
Average measured interrupt to process latency (µs): 7.419329
Highest measured interrupt to DPC latency (µs): 122396.20
Average measured interrupt to DPC latency (µs): 4.169295
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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): 209.755435
Driver with highest ISR routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Highest reported total ISR routine time (%): 0.015845
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
Total time spent in ISRs (%) 0.020728
ISR count (execution time <250 µs): 548734
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
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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): 122425.470109
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Highest reported total DPC routine time (%): 0.048005
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 457.30 , NVIDIA Corporation
Total time spent in DPCs (%) 0.166279
DPC count (execution time <250 µs): 4302105
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 713
DPC count (execution time 1000-2000 µs): 78
DPC count (execution time 2000-4000 µs): 67
DPC count (execution time >=4000 µs): 138
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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: microsoft.photos.exe
Total number of hard pagefaults 10556
Hard pagefault count of hardest hit process: 6253
Number of processes hit: 44
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 126.113859
CPU 0 ISR highest execution time (µs): 198.145833
CPU 0 ISR total execution time (s): 3.198229
CPU 0 ISR count: 541574
CPU 0 DPC highest execution time (µs): 122425.470109
CPU 0 DPC total execution time (s): 24.632331
CPU 0 DPC count: 4159514
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CPU 1 Interrupt cycle time (s): 77.443007
CPU 1 ISR highest execution time (µs): 209.755435
CPU 1 ISR total execution time (s): 0.056558
CPU 1 ISR count: 7160
CPU 1 DPC highest execution time (µs): 304.701087
CPU 1 DPC total execution time (s): 0.126696
CPU 1 DPC count: 7521
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CPU 2 Interrupt cycle time (s): 63.823917
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): 14326.753623
CPU 2 DPC total execution time (s): 0.231130
CPU 2 DPC count: 26235
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CPU 3 Interrupt cycle time (s): 71.681187
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): 177.130435
CPU 3 DPC total execution time (s): 0.025402
CPU 3 DPC count: 5898
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CPU 4 Interrupt cycle time (s): 57.713981
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): 86622.771739
CPU 4 DPC total execution time (s): 0.579870
CPU 4 DPC count: 34002
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CPU 5 Interrupt cycle time (s): 69.124442
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): 158.599638
CPU 5 DPC total execution time (s): 0.012482
CPU 5 DPC count: 3622
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CPU 6 Interrupt cycle time (s): 57.571521
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): 479.868659
CPU 6 DPC total execution time (s): 0.235917
CPU 6 DPC count: 28253
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CPU 7 Interrupt cycle time (s): 68.709382
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): 364.1250
CPU 7 DPC total execution time (s): 0.050274
CPU 7 DPC count: 8058
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CPU 8 Interrupt cycle time (s): 63.010706
CPU 8 ISR highest execution time (µs): 0.0
CPU 8 ISR total execution time (s): 0.0
CPU 8 ISR count: 0
CPU 8 DPC highest execution time (µs): 338.260870
CPU 8 DPC total execution time (s): 0.079827
CPU 8 DPC count: 11977
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CPU 9 Interrupt cycle time (s): 74.330280
CPU 9 ISR highest execution time (µs): 0.0
CPU 9 ISR total execution time (s): 0.0
CPU 9 ISR count: 0
CPU 9 DPC highest execution time (µs): 254.317029
CPU 9 DPC total execution time (s): 0.024898
CPU 9 DPC count: 3216
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CPU 10 Interrupt cycle time (s): 58.096266
CPU 10 ISR highest execution time (µs): 0.0
CPU 10 ISR total execution time (s): 0.0
CPU 10 ISR count: 0
CPU 10 DPC highest execution time (µs): 347.404891
CPU 10 DPC total execution time (s): 0.077355
CPU 10 DPC count: 10215
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CPU 11 Interrupt cycle time (s): 70.788779
CPU 11 ISR highest execution time (µs): 0.0
CPU 11 ISR total execution time (s): 0.0
CPU 11 ISR count: 0
CPU 11 DPC highest execution time (µs): 170.879529
CPU 11 DPC total execution time (s): 0.03330
CPU 11 DPC count: 4590
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Continue reading...