Windows 10: Audio/DPC latency and performance issues

for the past couple of weeks i've been getting weird almost crackling noises on my laptop and i assumed the speakers were going until they persisted with headphones as well. Here's my LatencyMon


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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 0:16:34 h:mm:ss on all processors.





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SYSTEM INFORMATION

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Computer name: BOOBS

OS version: Windows 10 , 10.0, version 1903, build: 18362 x64

Hardware: GP60 2PE, Micro-Star International Co., Ltd., MS-16GH

CPU: GenuineIntel IntelR CoreTM i7-4710HQ CPU @ 2.50GHz

Logical processors: 8

Processor groups: 1

RAM: 8109 MB total





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CPU SPEED

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Reported CPU speed: 2494 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.



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: 20495.60

Average measured interrupt to process latency µs: 7.813180



Highest measured interrupt to DPC latency µs: 20470.80

Average measured interrupt to DPC latency µs: 2.431609





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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: 313.953488

Driver with highest ISR routine execution time: i8042prt.sys - i8042 Port Driver, Microsoft Corporation



Highest reported total ISR routine time %: 0.001682

Driver with highest ISR total time: i8042prt.sys - i8042 Port Driver, Microsoft Corporation



Total time spent in ISRs % 0.003296



ISR count execution time <250 µs: 48569

ISR count execution time 250-500 µs: 0

ISR count execution time 500-999 µs: 3

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: 20820.840016

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



Highest reported total DPC routine time %: 0.042840

Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.



Total time spent in DPCs % 0.109743



DPC count execution time <250 µs: 1781829

DPC count execution time 250-500 µs: 0

DPC count execution time 500-999 µs: 434

DPC count execution time 1000-1999 µs: 9

DPC count execution time 2000-3999 µs: 9

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 5380

Hard pagefault count of hardest hit process: 721

Number of processes hit: 110





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PER CPU DATA

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CPU 0 Interrupt cycle time s: 38.794430

CPU 0 ISR highest execution time µs: 313.953488

CPU 0 ISR total execution time s: 0.262087

CPU 0 ISR count: 48553

CPU 0 DPC highest execution time µs: 20820.840016

CPU 0 DPC total execution time s: 8.247088

CPU 0 DPC count: 1745636

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CPU 1 Interrupt cycle time s: 19.932496

CPU 1 ISR highest execution time µs: 3.202887

CPU 1 ISR total execution time s: 0.000030

CPU 1 ISR count: 19

CPU 1 DPC highest execution time µs: 371.692061

CPU 1 DPC total execution time s: 0.056750

CPU 1 DPC count: 4667

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CPU 2 Interrupt cycle time s: 21.995778

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: 626.084202

CPU 2 DPC total execution time s: 0.231736

CPU 2 DPC count: 13132

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CPU 3 Interrupt cycle time s: 22.853101

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: 225.722133

CPU 3 DPC total execution time s: 0.028616

CPU 3 DPC count: 3920

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CPU 4 Interrupt cycle time s: 19.206954

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: 404.451885

CPU 4 DPC total execution time s: 0.100666

CPU 4 DPC count: 7914

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CPU 5 Interrupt cycle time s: 22.763291

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: 225.456295

CPU 5 DPC total execution time s: 0.010375

CPU 5 DPC count: 1292

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CPU 6 Interrupt cycle time s: 18.585343

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: 186.938653

CPU 6 DPC total execution time s: 0.032189

CPU 6 DPC count: 3635

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CPU 7 Interrupt cycle time s: 22.618378

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: 131.58340

CPU 7 DPC total execution time s: 0.019926

CPU 7 DPC count: 2093

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:)

 

DPC Latency High

Hi,

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DPC Latency Checker - Download

DPC Latency Checker

Hope this helps.

--------------------------------------------------------------------------------------------

Rob Brown -
Microsoft MVP <- profile - Windows and Devices for IT : Bicycle - Mark Twain said it right.

 

Audio stuttering/buzzing and storport.sys high dpc latency

I've only had this audio issue for a few weeks already after I did a custom windows 10 install bc of a previous problem. I've also posted twice about this but no one has helped me yet. I'll post the following possible solutions and suggestions that
I've already done to avoid repeated answers

I did: audio troubleshooter, uninstalled then reinstalled audio drivers, disabled audio enhancements and tried different audio quality under the advanced tab.


After more searching online I tried using DPC Latency Checker (and then LatencyMon to be more detailed) since I read that having high dpc latency can cause problems with real time audio among other things. Apparently
storport.sys is the problem? I literally just have basic knowledge about anything regarding this kind of stuff and I don't have any clue on how to fix this so I just hope someone can help me and give me steps by steps suggestions on how I can solve this. my
audio has just been driving me crazy with those stuttering sounds and I don't want it to worsen.

I would also like to know if having
Ricoh SD/MMC Host Controller and nothing else aside from that, under
IDE ATA/ATAPI controllers, is okay and won't cause problems?

please, I hope someone can help and answer this time around!

 

DPC Latency while using LatencyMon

which of the DPC Latency issues do you have? Video? Audio? Networking? or all 3? are you sure your using the term "DPC Latency" correctly? Examples of DPC Latency are when video or audio or networking has big slow downs for a second or two then back to normal, like video frame rate drops way down then comes back or audio cuts out momentarily and then back as normal or networking goes into a strange no down or uploading like it froze for a moment....Did you run a DPC Latency bench that said you have issues? Please tell us what is going on with your PC.