ASRock Forums : X370 Gaming K4 High DPC Latency in Win10

X370 Gaming K4 High DPC Latency in Win10 : Glad to hear it's working...

Sun, 23 Apr 2017 14:21:52 +0000

Author: TooQik
Subject: 4663
Posted: 23 Apr 2017 at 2:21pm

Glad to hear it's working for you now.

Drivers can be frustrating at times.

X370 Gaming K4 High DPC Latency in Win10 : Sooooooo.After some serious time...

Sun, 23 Apr 2017 14:13:01 +0000

Author: pyre
Subject: 4663
Posted: 23 Apr 2017 at 2:13pm

Sooooooo.
After some serious time spent on this, I have installed the driver included in
windows 10 64bit (version 10.0.15063.0) and this one works

It disables the Realtek panel in the taskbar...but who cares.

I would say that the asrock site holds maybe older / win 8.1 driver? Maybe that is why it is not working?

I am not sure.

I did not test it fully yet, but it seems it is fixed now.

I will update this thread if I have any news

X370 Gaming K4 High DPC Latency in Win10 : yes, it seems so.But..why noone...

Sun, 23 Apr 2017 13:02:07 +0000

Author: pyre
Subject: 4663
Posted: 23 Apr 2017 at 1:02pm

yes, it seems so.

But..why noone else has the same problem?

Why it appears only to me and only on latest windows driver.

Older windows driver partially work but it says that enhancments must have been turned off.

(it works correctly only if front and rear outputs are separated and enhancments off)

X370 Gaming K4 High DPC Latency in Win10 : pyre wrote:using 0 usb (unplugged...

Sun, 23 Apr 2017 09:22:13 +0000

Author: TooQik
Subject: 4663
Posted: 23 Apr 2017 at 9:22am

pyre wrote:

using 0 usb (unplugged all) devices did not fix the problem.
Also, I tried Ubuntu Linux 17.04 and the sound was ok.
I wrote to technical support AsRock...I want to confirm it not a SW problem before I send the board to RMA.

We'll see.

If the problem disappeared when you installed Ubuntu then the issue is definitely software related.

Waseh beat me to it.

Edited by TooQik - 23 Apr 2017 at 9:23am

X370 Gaming K4 High DPC Latency in Win10 : So i just installed my system...

Sun, 23 Apr 2017 09:18:30 +0000

Author: Waseh
Subject: 4663
Posted: 23 Apr 2017 at 9:18am

So i just installed my system and i get the same problem with sound crackling (from my limited testing it seems to only be the front panel)
However uninstalling the realtek drivers and just using the default drivers windows installs fixes the problem. Clearly seems like a driver problem.

X370 Gaming K4 High DPC Latency in Win10 : using 0 usb (unplugged all) devices...

Sun, 23 Apr 2017 06:01:28 +0000

Author: pyre
Subject: 4663
Posted: 23 Apr 2017 at 6:01am

using 0 usb (unplugged all) devices did not fix the problem.
Also, I tried Ubuntu Linux 17.04 and the sound was ok.
I wrote to technical support AsRock...I want to confirm it not a SW problem before I send the board to RMA.

We'll see.

Edited by pyre - 23 Apr 2017 at 6:04am

X370 Gaming K4 High DPC Latency in Win10 : nope, but i have 2 monitors and...

Sat, 22 Apr 2017 07:33:52 +0000

Author: pyre
Subject: 4663
Posted: 22 Apr 2017 at 7:33am

nope, but i have 2 monitors and each of those have speakers. One via hdmi the other via DP.

But I will try also unplugging usb devices. That might help to identify the problem if its usb related.

X370 Gaming K4 High DPC Latency in Win10 : Are you using usb audio?

Sat, 22 Apr 2017 07:25:26 +0000

Author: clubfoot
Subject: 4663
Posted: 22 Apr 2017 at 7:25am

Are you using usb audio?

X370 Gaming K4 High DPC Latency in Win10 : I have checked memory by aida...

Sat, 22 Apr 2017 05:08:08 +0000

Author: pyre
Subject: 4663
Posted: 22 Apr 2017 at 5:08am

I have checked memory by aida stress test before and now.
I have also run LatencyMon with 0 hard pagefaults.
The cracking is still there and is reproducible.
Any ideas for tests are welcome.
_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be suitable for handling real-time audio and other tasks without dropouts.
LatencyMon has been analyzing your system for 0:04:09 (h:mm:ss) on all processors.

_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name:                                        DESKTOP-T0CJ3QG
OS version:                                           Windows 10 , 10.0, build: 15063 (x64)
Hardware:                                             ASRock, X370 Gaming K4
CPU:                                                  AuthenticAMD AMD Ryzen 7 1700 Eight-Core Processor
Logical processors:                                   16
Processor groups:                                     1
RAM:                                                  16336 MB total

_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed:                                   2994 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):   548.184869
Average measured interrupt to process latency (µs):   5.185976

Highest measured interrupt to DPC latency (µs):       542.029330
Average measured interrupt to DPC latency (µs):       2.045506

_________________________________________________________________________________________________________
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):              363.106212
Driver with highest ISR routine execution time:       dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%):          0.065870
Driver with highest ISR total time:                   dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%)                          0.069044

ISR count (execution time <250 µs):                   111554
ISR count (execution time 250-500 µs):                0
ISR count (execution time 500-999 µs):                6
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):              373.587174
Driver with highest DPC routine execution time:       nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 378.92 , NVIDIA Corporation

Highest reported total DPC routine time (%):          0.043644
Driver with highest DPC total execution time:         nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 378.92 , NVIDIA Corporation

Total time spent in DPCs (%)                          0.110901

DPC count (execution time <250 µs):                   1089120
DPC count (execution time 250-500 µs):                0
DPC count (execution time 500-999 µs):                69
DPC count (execution time 1000-1999 µs):              0
DPC count (execution time 2000-3999 µs):              0
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.

Process with highest pagefault count:                 none

Total number of hard pagefaults                       0
Hard pagefault count of hardest hit process:          0
Highest hard pagefault resolution time (µs):          0.0
Total time spent in hard pagefaults (%):              0.0
Number of processes hit:                &nb

X370 Gaming K4 High DPC Latency in Win10 : That was my first thought too,...ram....

Sat, 22 Apr 2017 04:03:36 +0000

Author: clubfoot
Subject: 4663
Posted: 22 Apr 2017 at 4:03am

That was my first thought too,...ram. However, without adjusting your system as per the recommendations from LM above and performing a memtest (TeachPowerUp has a nice windows version) it would be difficult to pin point, unless more users are experiencing the same issue. Click on the process tab and sort to look for clues.

Edited by clubfoot - 22 Apr 2017 at 4:04am