High DPC/ ISR Latency

Thank you for getting back to me. I have done all of the above steps, with no success so far. I will be sure to provide feedback. I attach a more recent LatencyMon test. I believe the results are slightly different this time.

Test:

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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. Also one or more ISR 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  0:03:50  (h:mm:ss) on all processors.

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SYSTEM INFORMATION

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Computer name:                                        DESKTOP-9TGICJA

OS version:                                           Windows 10 , 10.0, build: 17134 (x64)

Hardware:                                             N552VX, ASUSTeK COMPUTER INC.

CPU:                                                  GenuineIntel Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz

Logical processors:                                   4

Processor groups:                                     1

RAM:                                                  12156 MB total

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CPU SPEED

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Reported CPU speed:                                   2304 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):   8111.544740

Average measured interrupt to process latency (µs):   5.791453

Highest measured interrupt to DPC latency (µs):       7941.322745

Average measured interrupt to DPC latency (µs):       2.073635

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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):              1030.326389

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

Highest reported total ISR routine time (%):          0.012373

Driver with highest ISR total time:                   Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in ISRs (%)                          0.016551

ISR count (execution time <250 µs):                   67271

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

ISR count (execution time 500-999 µs):                3

ISR count (execution time 1000-1999 µs):              1

ISR count (execution time 2000-3999 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):              2116.898438

Driver with highest DPC routine execution time:       Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total DPC routine time (%):          0.491111

Driver with highest DPC total execution time:         Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%)                          0.710999

DPC count (execution time <250 µs):                   828232

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

DPC count (execution time 500-999 µs):                201

DPC count (execution time 1000-1999 µs):              15

DPC count (execution time 2000-3999 µs):              2

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:                 chrome.exe

Total number of hard pagefaults                       3315

Hard pagefault count of hardest hit process:          2238

Number of processes hit:                              40

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 PER CPU DATA

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CPU 0 Interrupt cycle time (s):                       15.185592

CPU 0 ISR highest execution time (µs):                1030.326389

CPU 0 ISR total execution time (s):                   0.151369

CPU 0 ISR count:                                      66958

CPU 0 DPC highest execution time (µs):                2116.898438

CPU 0 DPC total execution time (s):                   6.362623

CPU 0 DPC count:                                      811189

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CPU 1 Interrupt cycle time (s):                       5.965884

CPU 1 ISR highest execution time (µs):                151.618056

CPU 1 ISR total execution time (s):                   0.000914

CPU 1 ISR count:                                      317

CPU 1 DPC highest execution time (µs):                446.163194

CPU 1 DPC total execution time (s):                   0.106391

CPU 1 DPC count:                                      8997

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CPU 2 Interrupt cycle time (s):                       5.402804

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):                1140.368924

CPU 2 DPC total execution time (s):                   0.038947

CPU 2 DPC count:                                      4303

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CPU 3 Interrupt cycle time (s):                       4.951277

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):                210.392361

CPU 3 DPC total execution time (s):                   0.033685

CPU 3 DPC count:                                      3961

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Hi,

Apologies for the delayed response.

We have been researching on this issue, we would like you to try a couple of steps and let us know if it works.

Change Power plan

Change the power plan to High performance or Power saver and see if it makes any difference.

Disable dynamic timer tick feature

Open Command prompt in admin mode.

Type bcdedit /set disabledynamictick yes and hit the Enter key.

Reboot the computer and check the status.

Enable the dynamic timer tick in case, disabling it doesn’t help.

I would also encourage you to post your feedback and suggestions on Windows 10 feedback Hub app to help us improve your Windows experience.

Send feedback to Microsoft with the Feedback Hub app

I have also sent you a private message, please click on your profile name, select My Profile and choose View personal messages.

Regards,

Peer Samie

Microsoft Community-Moderator

Many thanks for the response. 

I have tried all of the above steps, but the results of LatencyMon have not appeared to change so far.

Hi,

Thank you for writing to Microsoft Community Forums.

I appreciate you for providing us the required amount of information. As can be seen from the LatencyMon report, the problem can be related to power management. As suggested in the report, you can try with disabling CPU throttling Settings in control panel and BIOS. Also check if there are any updates available for BIOS and chipset.

Disclaimer: Modifying BIOS/ complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk. 

I would suggest to contact the system manufacturer to get BIOS and chipset drivers updated.

Please follow the steps given below to adjust the power management settings for the processor.

• Click Start and select Settings >System > Power & sleep.
• Click on Power Options.
• Click Change Plan Settings next to the selected Plan.
• Click Change Advanced Power Settings.
• In Advanced settings, scroll down to Processor power management. Make sure the settings as highlighted in the red boxes are all set to 100%.
• Click Ok.

In case, the above steps do not work,****disable/turn off Microsoft ACPI-Compliant Method Battery in device manager. Before disabling it, uninstall Intel Dynamic Platform and thermal Framework. Please follow the steps as given below.

• Press Windows key + R. This will open Run. Alternatively, you can go to Start and search for Run.
• In Run dialog box, type devmgmt.msc and hit Enter.
• Expand Intel Dynamic Platform and thermal Framework.
• Right click on Intel(R) Dynamic Platform and thermal Framework Managerand click on Uninstall.
• Check the checkbox remove the device driver from the computer.
• Click Ok.
• Expand Battery.
• Right click on Microsoft ACPI-Compliant Method Batteryand click on Disable.
• Reboot the computer and check the results.

Hope it helps.

Please get back to us with the updated information and let us know, if we can be of further assistance to you.

Regards,

Peer Samie

Microsoft Community-Moderator