Windows 8.1 pro high dpc latency being caused by nvlddmkm.sys

T

toxify

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Joined
Jun 20, 2015
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11

Windows 8.1 pro high dpc latency being caused by nvlddmkm.sys

Hey, greetings all. I am new to the forum. :wave:

I have been experiencing some crackling sound issues lately when playing online, listening to music or simply doing average tasks on windows like chatting on Skype. Long sotry made short: I did some research on the internet about it and I was thrown to downloading both Latencymon and DPC Latency checker. The first one says the nvlddmkm.sys so, my first reaction was to update Nvidia drivers. Nothing happened. And about the first one I don't have slightest idea what to do.

I also downloaded Windows SDK as the tutorial here on how to debug DPC latency issues said, but I am stuck with it, my computer knowledge is plain basic as for my brother used to do all the troubleshooting for me before he moved to another country

So, I humbly come to you asking for help
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 0:10:38 (h:mm:ss) on processors 0,1,2 and 3.




_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
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: 8133 MB total




_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 4007.0 MHz
Measured CPU speed: 4620.0 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.




_________________________________________________________________________________________________________
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): 498.589459
Average measured interrupt to process latency (µs): 4.467378


Highest measured interrupt to DPC latency (µs): 495.011678
Average measured interrupt to DPC latency (µs): 3.123584




_________________________________________________________________________________________________________
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): 150.435987
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation


Highest reported total ISR routine time (%): 0.091867
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation


Total time spent in ISRs (%) 0.105742


ISR count (execution time <250 µs): 467269
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




_________________________________________________________________________________________________________
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): 2385.335663
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 352.94 , NVIDIA Corporation


Highest reported total DPC routine time (%): 0.201754
Driver with highest DPC total execution time: cmudaxp.sys - C-Media Audio WDM Driver, C-Media Inc


Total time spent in DPCs (%) 0.329102


DPC count (execution time <250 µs): 3289766
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 3
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 8
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: chrome.exe


Total number of hard pagefaults 375
Hard pagefault count of hardest hit process: 219
Highest hard pagefault resolution time (µs): 492328.101572
Total time spent in hard pagefaults (%): 0.014915
Number of processes hit: 13




_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 26.385621
CPU 0 ISR highest execution time (µs): 150.435987
CPU 0 ISR total execution time (s): 5.398915
CPU 0 ISR count: 467269
CPU 0 DPC highest execution time (µs): 2385.335663
CPU 0 DPC total execution time (s): 16.757434
CPU 0 DPC count: 3265113
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 1.328056
CPU 1 ISR highest execution time (µs): 0.0
CPU 1 ISR total execution time (s): 0.0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 431.358123
CPU 1 DPC total execution time (s): 0.019793
CPU 1 DPC count: 8162
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 1.517080
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): 147.122536
CPU 2 DPC total execution time (s): 0.013596
CPU 2 DPC count: 7917
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 1.539844
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): 120.729473
CPU 3 DPC total execution time (s): 0.012293
CPU 3 DPC count: 8585
_________________________________________________________________________________________________________
 
Last edited by a moderator:
Jared said:
Could you follow these instructions.

https://www.sysnative.com/forums/wi...c-latency-issues-wpa-windows-vista-7-8-a.html
Click to expand...

I did all that and it came back as the nvidia driver,but here is the weird thing i disabled my asus xonar dgx and rebooted come back and tried it the issue didn't appear....i've tried the unified driver and asus one issue is still there.I've read other users have my problem with this game.but when i get ingame the sound is fine no stuttering or pops
 
Sorry I completely forgot about this thread at the time.
I'm not fantastic with trace analysis, but I'll try.

There are huge Interrupt spikes from your display driver, and you have tried updating them to no avail. Have you tested to see if the problems persist if you remove the graphics card and use integrated graphics?

Do you have a RAID array set up? You have Intel Rapid Storage Technology installed which is just garbage and only needed in RAID array set ups. I notice quite a bit of high ISR execution from storport.sys, the Windows Storage Port driver, which IRST will be attached to, iaStorA.sys.

  1. To remove IRST you need to remove it on the Programs and Features
  2. Then go to Device Manager
  3. Expand IDE ATA/ATAPI controllers
  4. Then click uninstall on each one.
  5. Once removed reboot and it should've been removed
 
I believe it should be the same way, unless you are experiencing issues that are preventing you to capture the trace.
 
cmudaxp.sys seems to be executing a lot of DPCs, have you updated that recently?

Have you tried removing the graphics card and have you removed Intel Rapid Storage Technology?
 
tried with the gpu out same thing have tried removing Intel Rapid Storage Technology when i was on 8.1 no change.There is no official w10 driver for my soundcard yet
 
I think you still have the old sound driver installed that is still functioning, have you made sure you completely uninstalled it?
So it still happens when you remove the GPU?
It won't be Nvidia then, a lot still comes from the DirectX engine, have you installed the latest version for your box?

https://support.microsoft.com/en-gb/kb/179113
 
Jared said:
I think you still have the old sound driver installed that is still functioning, have you made sure you completely uninstalled it?
So it still happens when you remove the GPU?
It won't be Nvidia then, a lot still comes from the DirectX engine, have you installed the latest version for your box?

https://support.microsoft.com/en-gb/kb/179113
Click to expand...

yep it's the 8.1 driver no updated one from asus yet and also made sure i have the latest directx installed
 
Tried ti with my gpu out and soundcard still the same issue .....i'm literally pulling my hair out now tryin to nail this
 

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