[SOLVED] PC having audio and video stuttering

[I_Timelord_I]

Hello all,

Current setup contains:

MB - Biostart x370gtn
Mem - Corsair Vengeance 16GB @3000
CPU - Ryzen 7 1700x
GPU - Nvidia 2060 Super
SSD - 500GB for system use
HDD - External 2TB drive

Been having issues with my PC where at startup for the first 15 minutes or so I'll have micro-stuttering and after opening internet tabs it can come back in small amounts. It'll happen whenever a video or game is happening as well. I've gone through clean installs of windows to updating drivers and BIOS to testing my drives and memory sticks. Best information I've found now with LatencyMon is that I'm getting the most faults from my DirectX Graphics Kernel (dxgkrnl.sys) and Storage Prt Driver (storport.sys). If anyone could potentially help I'd appreciate it. Below is my latest LatencyMon report.

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 0:21:28 (h🇲🇲ss) on all processors.


_
SYSTEM INFORMATION
_
Computer name: MAIN-PC
OS version: Windows 10, 10.0, version 2009, build: 19044 (x64)
Hardware: X370GTN, BIOSTAR Group
CPU: AuthenticAMD AMD Ryzen 7 1700X Eight-Core Processor
Logical processors: 16
Processor groups: 1
RAM: 16333 MB total


_
CPU SPEED
_
Reported CPU speed: 3394 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): 101056.50
Average measured interrupt to process latency (µs): 22.552946

Highest measured interrupt to DPC latency (µs): 101051.10
Average measured interrupt to DPC latency (µs): 18.954431


_
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): 322.449028
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 0.047722
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0.049227

ISR count (execution time <250 µs): 355636
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 8
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): 100969.261049
Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.036846
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 497.09 , NVIDIA Corporation

Total time spent in DPCs (%) 0.112427

DPC count (execution time <250 µs): 941546
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 456
DPC count (execution time 1000-2000 µs): 0
DPC count (execution time 2000-4000 µs): 0
DPC count (execution time >=4000 µs): 61


_
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: mbamservice.exe

Total number of hard pagefaults 24872
Hard pagefault count of hardest hit process: 6474
Number of processes hit: 45


_
PER CPU DATA
_
CPU 0 Interrupt cycle time (s): 59.464020
CPU 0 ISR highest execution time (µs): 322.449028
CPU 0 ISR total execution time (s): 10.130384
CPU 0 ISR count: 332244
CPU 0 DPC highest execution time (µs): 100969.261049
CPU 0 DPC total execution time (s): 19.756785
CPU 0 DPC count: 840994
_
CPU 1 Interrupt cycle time (s): 4.790520
CPU 1 ISR highest execution time (µs): 20.446081
CPU 1 ISR total execution time (s): 0.010051
CPU 1 ISR count: 9612
CPU 1 DPC highest execution time (µs): 202.697702
CPU 1 DPC total execution time (s): 0.219947
CPU 1 DPC count: 12318
_
CPU 2 Interrupt cycle time (s): 3.942813
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): 309.395993
CPU 2 DPC total execution time (s): 0.031138
CPU 2 DPC count: 5731
_
CPU 3 Interrupt cycle time (s): 9.565525
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): 100903.394814
CPU 3 DPC total execution time (s): 0.338974
CPU 3 DPC count: 4403
_
CPU 4 Interrupt cycle time (s): 7.207394
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): 100961.056570
CPU 4 DPC total execution time (s): 0.247753
CPU 4 DPC count: 6781
_
CPU 5 Interrupt cycle time (s): 2.209280
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): 284.662345
CPU 5 DPC total execution time (s): 0.004914
CPU 5 DPC count: 807
_
CPU 6 Interrupt cycle time (s): 3.289008
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): 264.236299
CPU 6 DPC total execution time (s): 0.022614
CPU 6 DPC count: 4006
_
CPU 7 Interrupt cycle time (s): 1.957314
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): 121.284031
CPU 7 DPC total execution time (s): 0.004578
CPU 7 DPC count: 929
_
CPU 8 Interrupt cycle time (s): 3.965227
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): 100839.111373
CPU 8 DPC total execution time (s): 0.128940
CPU 8 DPC count: 4973
_
CPU 9 Interrupt cycle time (s): 5.387366
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): 100900.649971
CPU 9 DPC total execution time (s): 0.827278
CPU 9 DPC count: 11984
_
CPU 10 Interrupt cycle time (s): 7.507387
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): 100948.263995
CPU 10 DPC total execution time (s): 1.059829
CPU 10 DPC count: 22033
_
CPU 11 Interrupt cycle time (s): 2.001330
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): 126.743665
CPU 11 DPC total execution time (s): 0.004763
CPU 11 DPC count: 979
_
CPU 12 Interrupt cycle time (s): 3.379610
CPU 12 ISR highest execution time (µs): 0.0
CPU 12 ISR total execution time (s): 0.0
CPU 12 ISR count: 0
CPU 12 DPC highest execution time (µs): 100838.670595
CPU 12 DPC total execution time (s): 0.246853
CPU 12 DPC count: 7882
_
CPU 13 Interrupt cycle time (s): 1.468890
CPU 13 ISR highest execution time (µs): 0.0
CPU 13 ISR total execution time (s): 0.0
CPU 13 ISR count: 0
CPU 13 DPC highest execution time (µs): 143.453153
CPU 13 DPC total execution time (s): 0.007624
CPU 13 DPC count: 2915
_
CPU 14 Interrupt cycle time (s): 1.775526
CPU 14 ISR highest execution time (µs): 0.0
CPU 14 ISR total execution time (s): 0.0
CPU 14 ISR count: 0
CPU 14 DPC highest execution time (µs): 163.177961
CPU 14 DPC total execution time (s): 0.053866
CPU 14 DPC count: 11548
_
CPU 15 Interrupt cycle time (s): 4.691738
CPU 15 ISR highest execution time (µs): 35.242192
CPU 15 ISR total execution time (s): 0.010635
CPU 15 ISR count: 13788
CPU 15 DPC highest execution time (µs): 100841.625810
CPU 15 DPC total execution time (s): 0.227361
CPU 15 DPC count: 3780
_

 

[Koekieezz]

Hello all,

Current setup contains:

MB - Biostart x370gtn
Mem - Corsair Vengeance 16GB @3000
CPU - Ryzen 7 1700x
GPU - Nvidia 2060 Super
SSD - 500GB for system use
HDD - External 2TB drive

Been having issues with my PC where at startup for the first 15 minutes or so I'll have micro-stuttering and after opening internet tabs it can come back in small amounts. It'll happen whenever a video or game is happening as well. I've gone through clean installs of windows to updating drivers and BIOS to testing my drives and memory sticks. Best information I've found now with LatencyMon is that I'm getting the most faults from my DirectX Graphics Kernel (dxgkrnl.sys) and Storage Prt Driver (storport.sys). If anyone could potentially help I'd appreciate it. Below is my latest LatencyMon report.

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 0:21:28 (h🇲🇲ss) on all processors.


_
SYSTEM INFORMATION
_
Computer name: MAIN-PC
OS version: Windows 10, 10.0, version 2009, build: 19044 (x64)
Hardware: X370GTN, BIOSTAR Group
CPU: AuthenticAMD AMD Ryzen 7 1700X Eight-Core Processor
Logical processors: 16
Processor groups: 1
RAM: 16333 MB total


_
CPU SPEED
_
Reported CPU speed: 3394 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): 101056.50
Average measured interrupt to process latency (µs): 22.552946

Highest measured interrupt to DPC latency (µs): 101051.10
Average measured interrupt to DPC latency (µs): 18.954431


_
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): 322.449028
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 0.047722
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0.049227

ISR count (execution time <250 µs): 355636
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 8
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): 100969.261049
Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.036846
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 497.09 , NVIDIA Corporation

Total time spent in DPCs (%) 0.112427

DPC count (execution time <250 µs): 941546
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 456
DPC count (execution time 1000-2000 µs): 0
DPC count (execution time 2000-4000 µs): 0
DPC count (execution time >=4000 µs): 61


_
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: mbamservice.exe

Total number of hard pagefaults 24872
Hard pagefault count of hardest hit process: 6474
Number of processes hit: 45


_
PER CPU DATA
_
CPU 0 Interrupt cycle time (s): 59.464020
CPU 0 ISR highest execution time (µs): 322.449028
CPU 0 ISR total execution time (s): 10.130384
CPU 0 ISR count: 332244
CPU 0 DPC highest execution time (µs): 100969.261049
CPU 0 DPC total execution time (s): 19.756785
CPU 0 DPC count: 840994
_
CPU 1 Interrupt cycle time (s): 4.790520
CPU 1 ISR highest execution time (µs): 20.446081
CPU 1 ISR total execution time (s): 0.010051
CPU 1 ISR count: 9612
CPU 1 DPC highest execution time (µs): 202.697702
CPU 1 DPC total execution time (s): 0.219947
CPU 1 DPC count: 12318
_
CPU 2 Interrupt cycle time (s): 3.942813
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): 309.395993
CPU 2 DPC total execution time (s): 0.031138
CPU 2 DPC count: 5731
_
CPU 3 Interrupt cycle time (s): 9.565525
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): 100903.394814
CPU 3 DPC total execution time (s): 0.338974
CPU 3 DPC count: 4403
_
CPU 4 Interrupt cycle time (s): 7.207394
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): 100961.056570
CPU 4 DPC total execution time (s): 0.247753
CPU 4 DPC count: 6781
_
CPU 5 Interrupt cycle time (s): 2.209280
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): 284.662345
CPU 5 DPC total execution time (s): 0.004914
CPU 5 DPC count: 807
_
CPU 6 Interrupt cycle time (s): 3.289008
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): 264.236299
CPU 6 DPC total execution time (s): 0.022614
CPU 6 DPC count: 4006
_
CPU 7 Interrupt cycle time (s): 1.957314
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): 121.284031
CPU 7 DPC total execution time (s): 0.004578
CPU 7 DPC count: 929
_
CPU 8 Interrupt cycle time (s): 3.965227
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): 100839.111373
CPU 8 DPC total execution time (s): 0.128940
CPU 8 DPC count: 4973
_
CPU 9 Interrupt cycle time (s): 5.387366
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): 100900.649971
CPU 9 DPC total execution time (s): 0.827278
CPU 9 DPC count: 11984
_
CPU 10 Interrupt cycle time (s): 7.507387
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): 100948.263995
CPU 10 DPC total execution time (s): 1.059829
CPU 10 DPC count: 22033
_
CPU 11 Interrupt cycle time (s): 2.001330
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): 126.743665
CPU 11 DPC total execution time (s): 0.004763
CPU 11 DPC count: 979
_
CPU 12 Interrupt cycle time (s): 3.379610
CPU 12 ISR highest execution time (µs): 0.0
CPU 12 ISR total execution time (s): 0.0
CPU 12 ISR count: 0
CPU 12 DPC highest execution time (µs): 100838.670595
CPU 12 DPC total execution time (s): 0.246853
CPU 12 DPC count: 7882
_
CPU 13 Interrupt cycle time (s): 1.468890
CPU 13 ISR highest execution time (µs): 0.0
CPU 13 ISR total execution time (s): 0.0
CPU 13 ISR count: 0
CPU 13 DPC highest execution time (µs): 143.453153
CPU 13 DPC total execution time (s): 0.007624
CPU 13 DPC count: 2915
_
CPU 14 Interrupt cycle time (s): 1.775526
CPU 14 ISR highest execution time (µs): 0.0
CPU 14 ISR total execution time (s): 0.0
CPU 14 ISR count: 0
CPU 14 DPC highest execution time (µs): 163.177961
CPU 14 DPC total execution time (s): 0.053866
CPU 14 DPC count: 11548
_
CPU 15 Interrupt cycle time (s): 4.691738
CPU 15 ISR highest execution time (µs): 35.242192
CPU 15 ISR total execution time (s): 0.010635
CPU 15 ISR count: 13788
CPU 15 DPC highest execution time (µs): 100841.625810
CPU 15 DPC total execution time (s): 0.227361
CPU 15 DPC count: 3780
_

Try this step by step (read till end):

• Disconnect from internet
• Uninstall gpu driver DDU (clean and do not restart).
• Uninstall all the processors (should be 16 on yours, also when it asks for restart, click on no) on device manager and the chipset in control panel like this:
  
  
  
  
• Restart the pc to bios, and update to the latest bios again. Then go to bios again after update and load default or optimized settings, then save and exit
  
  
• boot up to windows and install the latest Chipset driver, reboot and go to power plan, make sure it is set on amd ryzen balanced power plan, and connect to internet.
  
  
• Install the latest nvidia driver.
  
  *do this all offline until reboot after installing chipset driver, also you may reboot to bios after all of this to set the XMP (and previous settings you did). Download needed files (highlighted word) before doing step 1, do the step by orders.
  
  
• Run cmd as admin, then do chkdsk /x /f /r, after that do sfc /scannow
  
  
• And check windows update (and optional updates) if there is any and install them (except chipset in optional update). Enable hardware accelerated graphics scheduling (available in the latest windows update) in graphics settings and reboot, it should be like this:
  
  
  
  
  
  
• Make sure the psu connected to the gpu is 1 pcie cable per 1 slot (use main cable, not the branches/split) like this:
  
  

 

[I_Timelord_I]

Try this step by step (read till end):

• Disconnect from internet
• Uninstall gpu driver DDU (clean and do not restart).
• Uninstall all the processors (should be 16 on yours, also when it asks for restart, click on no) on device manager and the chipset in control panel like this:
  
  
  
  
• Restart the pc to bios, and update to the latest bios again. Then go to bios again after update and load default or optimized settings, then save and exit
  
  
• boot up to windows and install the latest Chipset driver, reboot and go to power plan, make sure it is set on amd ryzen balanced power plan, and connect to internet.
  
  
• Install the latest nvidia driver.
  
  *do this all offline until reboot after installing chipset driver, also you may reboot to bios after all of this to set the XMP (and previous settings you did). Download needed files (highlighted word) before doing step 1, do the step by orders.
  
  
• Run cmd as admin, then do chkdsk /x /f /r, after that do sfc /scannow
  
  
• And check windows update (and optional updates) if there is any and install them (except chipset in optional update). Enable hardware accelerated graphics scheduling (available in the latest windows update) in graphics settings and reboot, it should be like this:
  
  
  
  
  
  
• Make sure the psu connected to the gpu is 1 pcie cable per 1 slot (use main cable, not the branches/split) like this:
  
  

Completed everything and checked wiring and the issue is still present.

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 0:30:40 (h🇲🇲ss) on all processors.


_
SYSTEM INFORMATION
_
Computer name: MAIN-PC
OS version: Windows 10, 10.0, version 2009, build: 19044 (x64)
Hardware: X370GTN, BIOSTAR Group
CPU: AuthenticAMD AMD Ryzen 7 1700X Eight-Core Processor
Logical processors: 16
Processor groups: 1
RAM: 16333 MB total


_
CPU SPEED
_
Reported CPU speed: 3394 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): 102802.60
Average measured interrupt to process latency (µs): 53.498138

Highest measured interrupt to DPC latency (µs): 102795.40
Average measured interrupt to DPC latency (µs): 49.522328


_
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): 499.701827
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 0.034147
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0.036386

ISR count (execution time <250 µs): 679152
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 755
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): 103431.295816
Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.136866
Driver with highest DPC total execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Total time spent in DPCs (%) 0.220266

DPC count (execution time <250 µs): 1190780
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 5242
DPC count (execution time 1000-2000 µs): 54
DPC count (execution time 2000-4000 µs): 5
DPC count (execution time >=4000 µs): 400


_
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: dllhost.exe

Total number of hard pagefaults 67361
Hard pagefault count of hardest hit process: 46016
Number of processes hit: 57


_
PER CPU DATA
_
CPU 0 Interrupt cycle time (s): 72.725706
CPU 0 ISR highest execution time (µs): 499.701827
CPU 0 ISR total execution time (s): 9.987189
CPU 0 ISR count: 345224
CPU 0 DPC highest execution time (µs): 101260.404832
CPU 0 DPC total execution time (s): 31.517217
CPU 0 DPC count: 779517
_
CPU 1 Interrupt cycle time (s): 40.362650
CPU 1 ISR highest execution time (µs): 427.504420
CPU 1 ISR total execution time (s): 0.527698
CPU 1 ISR count: 179923
CPU 1 DPC highest execution time (µs): 101228.538598
CPU 1 DPC total execution time (s): 16.154310
CPU 1 DPC count: 229379
_
CPU 2 Interrupt cycle time (s): 8.194054
CPU 2 ISR highest execution time (µs): 37.406011
CPU 2 ISR total execution time (s): 0.069523
CPU 2 ISR count: 9838
CPU 2 DPC highest execution time (µs): 100871.358279
CPU 2 DPC total execution time (s): 0.836521
CPU 2 DPC count: 37119
_
CPU 3 Interrupt cycle time (s): 11.156828
CPU 3 ISR highest execution time (µs): 24.603418
CPU 3 ISR total execution time (s): 0.000110
CPU 3 ISR count: 5
CPU 3 DPC highest execution time (µs): 100943.715969
CPU 3 DPC total execution time (s): 0.625760
CPU 3 DPC count: 10703
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CPU 4 Interrupt cycle time (s): 18.179208
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): 100873.111373
CPU 4 DPC total execution time (s): 2.574016
CPU 4 DPC count: 17925
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CPU 5 Interrupt cycle time (s): 4.112381
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): 242.678256
CPU 5 DPC total execution time (s): 0.058609
CPU 5 DPC count: 7651
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CPU 6 Interrupt cycle time (s): 3.909048
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): 645.799646
CPU 6 DPC total execution time (s): 0.143245
CPU 6 DPC count: 10320
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CPU 7 Interrupt cycle time (s): 3.159720
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): 862.321744
CPU 7 DPC total execution time (s): 0.053599
CPU 7 DPC count: 4236
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CPU 8 Interrupt cycle time (s): 34.881025
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): 103431.295816
CPU 8 DPC total execution time (s): 4.739423
CPU 8 DPC count: 18163
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CPU 9 Interrupt cycle time (s): 3.882210
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): 377.586329
CPU 9 DPC total execution time (s): 0.051250
CPU 9 DPC count: 6636
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CPU 10 Interrupt cycle time (s): 12.399834
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): 100859.797879
CPU 10 DPC total execution time (s): 0.953650
CPU 10 DPC count: 24601
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CPU 11 Interrupt cycle time (s): 4.077075
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): 427.684738
CPU 11 DPC total execution time (s): 0.091663
CPU 11 DPC count: 4808
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CPU 12 Interrupt cycle time (s): 11.346043
CPU 12 ISR highest execution time (µs): 0.0
CPU 12 ISR total execution time (s): 0.0
CPU 12 ISR count: 0
CPU 12 DPC highest execution time (µs): 100896.352387
CPU 12 DPC total execution time (s): 0.975160
CPU 12 DPC count: 11634
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CPU 13 Interrupt cycle time (s): 5.293937
CPU 13 ISR highest execution time (µs): 0.0
CPU 13 ISR total execution time (s): 0.0
CPU 13 ISR count: 0
CPU 13 DPC highest execution time (µs): 986.390689
CPU 13 DPC total execution time (s): 0.096030
CPU 13 DPC count: 5132
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CPU 14 Interrupt cycle time (s): 20.365147
CPU 14 ISR highest execution time (µs): 0.0
CPU 14 ISR total execution time (s): 0.0
CPU 14 ISR count: 0
CPU 14 DPC highest execution time (µs): 100966.526223
CPU 14 DPC total execution time (s): 1.048473
CPU 14 DPC count: 13260
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CPU 15 Interrupt cycle time (s): 24.505266
CPU 15 ISR highest execution time (µs): 38.628167
CPU 15 ISR total execution time (s): 0.130663
CPU 15 ISR count: 144917
CPU 15 DPC highest execution time (µs): 100873.542133
CPU 15 DPC total execution time (s): 4.946567
CPU 15 DPC count: 15397
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