Windows 10: Drivers not working properly, high IRS count, DPC count and execution time.

I ran a latency checker and found out that many drivers are causing long execution times and have both very large ISR and DPC counts. I have tried reinstalling the drivers, reinstalling win11, disabling CPU throttling and I can't seem to figure out how to fix it. The reason i believe it isn't hardware is because I've just recently received these stutters after playing a game arena breakout infinite, which always ran fine like a week ago. The stutters are mostly a few seconds long and happen every 5-10seconds, the GPU-decoding goes to 100% i think this causes the stutters. The stutters go a

:)

 

Something causing high DPC (User process and at times a driver)


Have noticed that i seem to get sky high DPC at soem occasions.
I haven't really suffered from anything before, but recently i had some audio glitches which i haven't been able to reproduce.
As i have overclocked recently with offset voltage i though that might be the cause, however as said i cannot reproduce the audio glitch, might have been something interfering (it was huge glitch though, though it was gonna crash, happened like 2-3 times).

Anyhow, i have tried non-OC as well, but looking at my DPC it seems that it always gets high for some reason.

Especially the User process. Driver has become high, but hasn't confirmed that without OC (it's a bit rarer, and i think it's USB driver, though no idea why).





This is with no overclock, just the default BIOS settings, with only some stuff disabled (USB 3.0, etc, and HDD set to AHCI).

 

High DPC/ ISR Latency

Hello community,

So by way of background, for a while now I have experienced issues regarding audio crackles and pops. This primarily occurs when using Cubase 9.5 but also exists outside of the software too, occasionally. After searching for solutions, I came across LatencyMon
and decided to start testing (the results of which can be found below). I should add that when trying it for the past few days, I have noticed that the 'Highest measured interrupt to process latency' changes between HDAudBus.sys and Wdf01000.sys.

Steps I have taken so far:

1) The first thing I did was simply to plug out all of the USB devices that were inserted in my computer one by one. One potentially notable piece of information is that I switched audio interface very recently - from the Focusrite 2i2 to the Audient iD4.
However, I experienced these issues with my last audio interface too. This step produced no differences.

2) I then, through device manager, disabled a huge variety of drivers one by one to see if there was a particular driver causing the issue. This primarily included network, audio and USB drivers. This step produced no differences.

3) Following this I downloaded Driver Booster and tried to update all outdated drives, of which there were many. This step produced no differences.

Pretty sure there were a few other minor things I have tried too such as disabling WiFi, antivirus and more. All produced no result.

More than happy to provide more details if necessary. Any help is greatly appreciated.

LatencyMon:

Code:

_________________________________________________________________________________________________________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  0:04:26  (h:mm:ss) on all processors._________________________________________________________________________________________________________SYSTEM INFORMATION_________________________________________________________________________________________________________Computer name:                                        DESKTOP-9TGICJAOS version:                                           Windows 10 , 10.0, build: 17134 (x64)Hardware:                                             N552VX, ASUSTeK COMPUTER INC.CPU:                                                  GenuineIntel Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHzLogical processors:                                   4Processor groups:                                     1RAM:                                                  12156 MB total_________________________________________________________________________________________________________CPU SPEED_________________________________________________________________________________________________________Reported CPU speed:                                   2304 MHzNote: 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):   2250.220222Average measured interrupt to process latency (µs):   5.684522Highest measured interrupt to DPC latency (µs):       2190.220275Average measured interrupt to DPC latency (µs):       2.232872_________________________________________________________________________________________________________ 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):              149.830729Driver with highest ISR routine execution time:       HDAudBus.sys - High Definition Audio Bus Driver, Microsoft CorporationHighest reported total ISR routine time (%):          0.021921Driver with highest ISR total time:                   Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft CorporationTotal time spent in ISRs (%)                          0.023631ISR count (execution time <250 µs):                   82832ISR count (execution time 250-500 µs):                0ISR count (execution time 500-999 µs):                0ISR count (execution time 1000-1999 µs):              0ISR count (execution time 2000-3999 µs):              0ISR 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):              1638.547743Driver with highest DPC routine execution time:       Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft CorporationHighest reported total DPC routine time (%):          0.562742Driver with highest DPC total execution time:         Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft CorporationTotal time spent in DPCs (%)                          0.710236DPC count (execution time <250 µs):                   944181DPC count (execution time 250-500 µs):                0DPC count (execution time 500-999 µs):                162DPC count (execution time 1000-1999 µs):              4DPC count (execution time 2000-3999 µs):              0DPC 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:                 winword.exeTotal number of hard pagefaults                       643Hard pagefault count of hardest hit process:          323Number of processes hit:                              18_________________________________________________________________________________________________________ PER CPU DATA_________________________________________________________________________________________________________CPU 0 Interrupt cycle time (s):                       17.051465CPU 0 ISR highest execution time (µs):                149.830729CPU 0 ISR total execution time (s):                   0.251434CPU 0 ISR count:                                      82832CPU 0 DPC highest execution time (µs):                1638.547743CPU 0 DPC total execution time (s):                   7.498538CPU 0 DPC count:                                      938734_________________________________________________________________________________________________________CPU 1 Interrupt cycle time (s):                       6.104686CPU 1 ISR highest execution time (µs):                0.0CPU 1 ISR total execution time (s):                   0.0CPU 1 ISR count:                                      0CPU 1 DPC highest execution time (µs):                227.875868CPU 1 DPC total execution time (s):                   0.026960CPU 1 DPC count:                                      2310_________________________________________________________________________________________________________CPU 2 Interrupt cycle time (s):                       5.310433CPU 2 ISR highest execution time (µs):                0.0CPU 2 ISR total execution time (s):                   0.0CPU 2 ISR count:                                      0CPU 2 DPC highest execution time (µs):                203.476563CPU 2 DPC total execution time (s):                   0.009951CPU 2 DPC count:                                      1081_________________________________________________________________________________________________________CPU 3 Interrupt cycle time (s):                       5.152465CPU 3 ISR highest execution time (µs):                0.0CPU 3 ISR total execution time (s):                   0.0CPU 3 ISR count:                                      0CPU 3 DPC highest execution time (µs):                279.683160CPU 3 DPC total execution time (s):                   0.021462CPU 3 DPC count:                                      2222_________________________________________________________________________________________________________

 

Windows 10 High Dpc Latency

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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 0:00:34 (h:mm:ss) on all processors.

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SYSTEM INFORMATION

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Computer name: TOXIFY

OS version: Windows 8 , 6.2, build: 9200 (x64)

Hardware: All Series, ASUS, ASUSTeK COMPUTER INC., MAXIMUS VII HERO

CPU: GenuineIntel Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz

Logical processors: 8

Processor groups: 1

RAM: 16325 MB total

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CPU SPEED

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Reported CPU speed: 40 MHz

Measured CPU speed: 17 MHz (approx.)

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.

WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature.

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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): 476.527045

Average measured interrupt to process latency (µs): 22.071483

Highest measured interrupt to DPC latency (µs): 453.130216

Average measured interrupt to DPC latency (µs): 10.219612

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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): 95.002250

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

Highest reported total ISR routine time (%): 0.088418

Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0.091639

ISR count (execution time <250 µs): 18208

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

ISR count (execution time 500-999 µs): 0

ISR count (execution time 1000-1999 µs): 0

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): 314.29850

Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation

Highest reported total DPC routine time (%): 0.288840

Driver with highest DPC total execution time: cmudaxp.sys - C-Media Audio WDM Driver, C-Media Inc

Total time spent in DPCs (%) 0.834058

DPC count (execution time <250 µs): 236473

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

DPC count (execution time 500-999 µs): 17

DPC count (execution time 1000-1999 µs): 0

DPC count (execution time 2000-3999 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: searchindexer.exe

Total number of hard pagefaults 107

Hard pagefault count of hardest hit process: 80

Highest hard pagefault resolution time (µs): 10444.1780

Total time spent in hard pagefaults (%): 0.012556

Number of processes hit: 3

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PER CPU DATA

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CPU 0 Interrupt cycle time (s): 3.152745

CPU 0 ISR highest execution time (µs): 95.002250

CPU 0 ISR total execution time (s): 0.240482

CPU 0 ISR count: 15864

CPU 0 DPC highest execution time (µs): 312.2290

CPU 0 DPC total execution time (s): 2.025879

CPU 0 DPC count: 195597

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CPU 1 Interrupt cycle time (s): 0.145655

CPU 1 ISR highest execution time (µs): 71.0830

CPU 1 ISR total execution time (s): 0.007632

CPU 1 ISR count: 1470

CPU 1 DPC highest execution time (µs): 156.977750

CPU 1 DPC total execution time (s): 0.032375

CPU 1 DPC count: 4747

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CPU 2 Interrupt cycle time (s): 0.313203

CPU 2 ISR highest execution time (µs): 2.45350

CPU 2 ISR total execution time (s): 0.000049

CPU 2 ISR count: 29

CPU 2 DPC highest execution time (µs): 314.29850

CPU 2 DPC total execution time (s): 0.166350

CPU 2 DPC count: 30377

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CPU 3 Interrupt cycle time (s): 0.111494

CPU 3 ISR highest execution time (µs): 4.445250

CPU 3 ISR total execution time (s): 0.000530

CPU 3 ISR count: 471

CPU 3 DPC highest execution time (µs): 78.54750

CPU 3 DPC total execution time (s): 0.003921

CPU 3 DPC count: 545

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CPU 4 Interrupt cycle time (s): 0.175799

CPU 4 ISR highest execution time (µs): 2.2550

CPU 4 ISR total execution time (s): 0.000035

CPU 4 ISR count: 23

CPU 4 DPC highest execution time (µs): 101.90950

CPU 4 DPC total execution time (s): 0.012382

CPU 4 DPC count: 1404

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CPU 5 Interrupt cycle time (s): 0.110466

CPU 5 ISR highest execution time (µs): 5.3840

CPU 5 ISR total execution time (s): 0.000311

CPU 5 ISR count: 209

CPU 5 DPC highest execution time (µs): 93.5640

CPU 5 DPC total execution time (s): 0.004549

CPU 5 DPC count: 543

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CPU 6 Interrupt cycle time (s): 0.150359

CPU 6 ISR highest execution time (µs): 2.923750

CPU 6 ISR total execution time (s): 0.000031

CPU 6 ISR count: 18

CPU 6 DPC highest execution time (µs): 75.430

CPU 6 DPC total execution time (s): 0.017617

CPU 6 DPC count: 2617

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CPU 7 Interrupt cycle time (s): 0.108249

CPU 7 ISR highest execution time (µs): 5.0440

CPU 7 ISR total execution time (s): 0.000189

CPU 7 ISR count: 124

CPU 7 DPC highest execution time (µs): 71.406750

CPU 7 DPC total execution time (s): 0.005565

CPU 7 DPC count: 660

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