Have you encountered problems with DPC latency?
Have you encountered problems with DPC latency?
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CONCLUSION
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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 4:11:36 (h:mm
s) on all processors._________________________________________________________________________________________________________
SYSTEM INFORMATION
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Computer name: DESKTOP-HAPSP1P
OS version: Windows 10, 10.0, version 2009, build: 19045 (x64)
Hardware: System Product Name, ASUS
BIOS: 2004
CPU: GenuineIntel Intel® Core™ i7-8700K CPU @ 3.70GHz
Logical processors: 12
Processor groups: 1
Processor group size: 12
RAM: 32683 MB total
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CPU SPEED
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Reported CPU speed (WMI): 3696 MHz
Reported CPU speed (registry): 3696 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): 958.60
Average measured interrupt to process latency (µs): 6.096332
Highest measured interrupt to DPC latency (µs): 953.40
Average measured interrupt to DPC latency (µs): 3.031162
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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): 391.068182
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total ISR routine time (%): 0.142058
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Total time spent in ISRs (%) 0.144384
ISR count (execution time <250 µs): 10083578
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 31
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): 1877.845238
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 552.22 , NVIDIA Corporation
Highest reported total DPC routine time (%): 0.098614
Driver with highest DPC total execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Total time spent in DPCs (%) 0.197662
DPC count (execution time <250 µs): 33365120
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 16454
DPC count (execution time 1000-2000 µs): 5
DPC count (execution time 2000-4000 µs): 0
DPC count (execution time >=4000 µs): 0
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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: msmpeng.exe
Total number of hard pagefaults 32815
Hard pagefault count of hardest hit process: 16590
Number of processes hit: 112
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 1206.110350
CPU 0 ISR highest execution time (µs): 391.068182
CPU 0 ISR total execution time (s): 260.553510
CPU 0 ISR count: 9318886
CPU 0 DPC highest execution time (µs): 1877.845238
CPU 0 DPC total execution time (s): 333.290502
CPU 0 DPC count: 30453198
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CPU 1 Interrupt cycle time (s): 182.274360
CPU 1 ISR highest execution time (µs): 65.929654
CPU 1 ISR total execution time (s): 1.004805
CPU 1 ISR count: 764556
CPU 1 DPC highest execution time (µs): 243.275433
CPU 1 DPC total execution time (s): 18.149084
CPU 1 DPC count: 979035
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CPU 2 Interrupt cycle time (s): 99.264097
CPU 2 ISR highest execution time (µs): 16.300866
CPU 2 ISR total execution time (s): 0.000213
CPU 2 ISR count: 167
CPU 2 DPC highest execution time (µs): 244.113636
CPU 2 DPC total execution time (s): 0.808530
CPU 2 DPC count: 310244
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CPU 3 Interrupt cycle time (s): 92.997920
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): 273.045455
CPU 3 DPC total execution time (s): 0.389935
CPU 3 DPC count: 134604
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CPU 4 Interrupt cycle time (s): 94.257299
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): 248.192641
CPU 4 DPC total execution time (s): 0.881663
CPU 4 DPC count: 307319
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CPU 5 Interrupt cycle time (s): 90.129780
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): 247.738095
CPU 5 DPC total execution time (s): 0.423894
CPU 5 DPC count: 137363
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CPU 6 Interrupt cycle time (s): 88.660021
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): 247.255952
CPU 6 DPC total execution time (s): 0.805658
CPU 6 DPC count: 267842
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CPU 7 Interrupt cycle time (s): 81.740936
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): 247.087121
CPU 7 DPC total execution time (s): 0.359721
CPU 7 DPC count: 124731
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CPU 8 Interrupt cycle time (s): 93.174653
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): 243.023268
CPU 8 DPC total execution time (s): 0.741219
CPU 8 DPC count: 219225
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CPU 9 Interrupt cycle time (s): 84.032644
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): 240.170996
CPU 9 DPC total execution time (s): 0.324917
CPU 9 DPC count: 96114
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CPU 10 Interrupt cycle time (s): 98.165964
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): 236.808442
CPU 10 DPC total execution time (s): 1.315625
CPU 10 DPC count: 244300
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CPU 11 Interrupt cycle time (s): 83.656314
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): 239.103355
CPU 11 DPC total execution time (s): 0.583527
CPU 11 DPC count: 107604
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CelticGila
11-07-2017, 04:54 AM #1This is what latencymon says
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CONCLUSION
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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 4:11:36 (h:mms) on all processors.
_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: DESKTOP-HAPSP1P
OS version: Windows 10, 10.0, version 2009, build: 19045 (x64)
Hardware: System Product Name, ASUS
BIOS: 2004
CPU: GenuineIntel Intel® Core™ i7-8700K CPU @ 3.70GHz
Logical processors: 12
Processor groups: 1
Processor group size: 12
RAM: 32683 MB total
_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed (WMI): 3696 MHz
Reported CPU speed (registry): 3696 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): 958.60
Average measured interrupt to process latency (µs): 6.096332
Highest measured interrupt to DPC latency (µs): 953.40
Average measured interrupt to DPC latency (µs): 3.031162
_________________________________________________________________________________________________________
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): 391.068182
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total ISR routine time (%): 0.142058
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Total time spent in ISRs (%) 0.144384
ISR count (execution time <250 µs): 10083578
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 31
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
_________________________________________________________________________________________________________
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): 1877.845238
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 552.22 , NVIDIA Corporation
Highest reported total DPC routine time (%): 0.098614
Driver with highest DPC total execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Total time spent in DPCs (%) 0.197662
DPC count (execution time <250 µs): 33365120
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 16454
DPC count (execution time 1000-2000 µs): 5
DPC count (execution time 2000-4000 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.
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 32815
Hard pagefault count of hardest hit process: 16590
Number of processes hit: 112
_________________________________________________________________________________________________________
PER CPU DATA
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CPU 0 Interrupt cycle time (s): 1206.110350
CPU 0 ISR highest execution time (µs): 391.068182
CPU 0 ISR total execution time (s): 260.553510
CPU 0 ISR count: 9318886
CPU 0 DPC highest execution time (µs): 1877.845238
CPU 0 DPC total execution time (s): 333.290502
CPU 0 DPC count: 30453198
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CPU 1 Interrupt cycle time (s): 182.274360
CPU 1 ISR highest execution time (µs): 65.929654
CPU 1 ISR total execution time (s): 1.004805
CPU 1 ISR count: 764556
CPU 1 DPC highest execution time (µs): 243.275433
CPU 1 DPC total execution time (s): 18.149084
CPU 1 DPC count: 979035
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CPU 2 Interrupt cycle time (s): 99.264097
CPU 2 ISR highest execution time (µs): 16.300866
CPU 2 ISR total execution time (s): 0.000213
CPU 2 ISR count: 167
CPU 2 DPC highest execution time (µs): 244.113636
CPU 2 DPC total execution time (s): 0.808530
CPU 2 DPC count: 310244
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CPU 3 Interrupt cycle time (s): 92.997920
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): 273.045455
CPU 3 DPC total execution time (s): 0.389935
CPU 3 DPC count: 134604
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CPU 4 Interrupt cycle time (s): 94.257299
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): 248.192641
CPU 4 DPC total execution time (s): 0.881663
CPU 4 DPC count: 307319
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CPU 5 Interrupt cycle time (s): 90.129780
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): 247.738095
CPU 5 DPC total execution time (s): 0.423894
CPU 5 DPC count: 137363
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CPU 6 Interrupt cycle time (s): 88.660021
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): 247.255952
CPU 6 DPC total execution time (s): 0.805658
CPU 6 DPC count: 267842
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CPU 7 Interrupt cycle time (s): 81.740936
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): 247.087121
CPU 7 DPC total execution time (s): 0.359721
CPU 7 DPC count: 124731
_________________________________________________________________________________________________________
CPU 8 Interrupt cycle time (s): 93.174653
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): 243.023268
CPU 8 DPC total execution time (s): 0.741219
CPU 8 DPC count: 219225
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CPU 9 Interrupt cycle time (s): 84.032644
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): 240.170996
CPU 9 DPC total execution time (s): 0.324917
CPU 9 DPC count: 96114
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CPU 10 Interrupt cycle time (s): 98.165964
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): 236.808442
CPU 10 DPC total execution time (s): 1.315625
CPU 10 DPC count: 244300
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CPU 11 Interrupt cycle time (s): 83.656314
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): 239.103355
CPU 11 DPC total execution time (s): 0.583527
CPU 11 DPC count: 107604
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JoaquinXDDD
11-14-2017, 01:38 PM #2What specific issue are you encountering? Detailed system information would be useful. NV drivers tend to cause problems with DPC latency, and they've been attempted several times without much success. You might want to try using the studio drivers instead.