[SOLVED] DPC Latency rspLLL64.sys, afd.sys, nvlddmkm.sys

JakeNeedsHelp

New member
Joined
Dec 31, 2016
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· OS - Windows 10 x64· What was original installed OS on system? - Windows 7
· Is the OS an OEM version (came pre-installed on system) or full retail version (YOU purchased it from retailer)? - Win 7 from disk, free updrage to win10
· Age of system (hardware) - Oldest age ~2 years
· Age of OS installation - have you re-installed the OS? -- Win7 age is ~2 years. Win10 since the end of the free upgrade period

· CPU - i5-6500 3.2ghz
· Video Card - EVGA GTX 970 4gb
· MotherBoard - Gigabyte Z170x-Gaming 7
· Power Supply - EVGA SuperNOVA 650 GS

· System Manufacturer - Self built



· Laptop or Desktop? Desktop

Crackling audio and my computer turns into a slow-mo mode. Not sure the exact cause of it but i'm able to reproduce it pretty reliable while playing a certain game (How to Survive 2). Used LatencyMon, attached(View attachment Drivers.txt) is the export from that running while the issue is occurring. It also has a notification saying:
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 of more DPS routines that belong to a driver running in your system appear to be executing for too long. Also one of more ISR 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.

Tried googling and solving the issue on my own so I've tried a few things like disabling audio enhancements and changing the default audio format. Both of which seemed to be a temporary fix. I also followed the initial instructions for this post and have the cpu.etl file ready to be read if that's needed.


Any help would be appreciated, thanks!
 
Just found this part of LatencyMon. Stats report during latency:
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. Also one or more ISR 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  0:00:42  (h:mm:ss) on all processors.




_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name:                                        JAKE-PC
OS version:                                           Windows 8 , 6.2, build: 9200 (x64)
Hardware:                                             Gigabyte Technology Co., Ltd., Z170X-Gaming 7
CPU:                                                  GenuineIntel Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
Logical processors:                                   4
Processor groups:                                     1
RAM:                                                  8144 MB total




_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed:                                   3192.0 MHz
Measured CPU speed:                                   3486.0 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):   41398.222179
Average measured interrupt to process latency (µs):   199.986943


Highest measured interrupt to DPC latency (µs):       41346.252246
Average measured interrupt to DPC latency (µs):       197.519444




_________________________________________________________________________________________________________
 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):              1152.308271
Driver with highest ISR routine execution time:       storport.sys - Microsoft Storage Port Driver, Microsoft Corporation


Highest reported total ISR routine time (%):          0.202180
Driver with highest ISR total time:                   dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation


Total time spent in ISRs (%)                          0.431347


ISR count (execution time <250 µs):                   29858
ISR count (execution time 250-500 µs):                0
ISR count (execution time 500-999 µs):                0
ISR count (execution time 1000-1999 µs):              275
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):              41117.234962
Driver with highest DPC routine execution time:       asstahci64.sys - Asmedia 106x SATA Host Controller Driver, Asmedia Technology


Highest reported total DPC routine time (%):          9.178758
Driver with highest DPC total execution time:         asstahci64.sys - Asmedia 106x SATA Host Controller Driver, Asmedia Technology


Total time spent in DPCs (%)                          9.961714


DPC count (execution time <250 µs):                   146617
DPC count (execution time 250-500 µs):                0
DPC count (execution time 500-999 µs):                1
DPC count (execution time 1000-1999 µs):              253
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.


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:                 latmon.exe


Total number of hard pagefaults                       27
Hard pagefault count of hardest hit process:          11
Highest hard pagefault resolution time (µs):          5229.519424
Total time spent in hard pagefaults (%):              0.010730
Number of processes hit:                              1




_________________________________________________________________________________________________________
 PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s):                       16.531968
CPU 0 ISR highest execution time (µs):                1152.308271
CPU 0 ISR total execution time (s):                   0.621237
CPU 0 ISR count:                                      23331
CPU 0 DPC highest execution time (µs):                41117.234962
CPU 0 DPC total execution time (s):                   16.226682
CPU 0 DPC count:                                      99976
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s):                       0.897182
CPU 1 ISR highest execution time (µs):                216.426065
CPU 1 ISR total execution time (s):                   0.089243
CPU 1 ISR count:                                      4851
CPU 1 DPC highest execution time (µs):                1027.473997
CPU 1 DPC total execution time (s):                   0.236160
CPU 1 DPC count:                                      20084
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s):                       0.767469
CPU 2 ISR highest execution time (µs):                173.916040
CPU 2 ISR total execution time (s):                   0.017087
CPU 2 ISR count:                                      1928
CPU 2 DPC highest execution time (µs):                1023.381579
CPU 2 DPC total execution time (s):                   0.217782
CPU 2 DPC count:                                      15328
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s):                       0.641182
CPU 3 ISR highest execution time (µs):                17.245614
CPU 3 ISR total execution time (s):                   0.000064
CPU 3 ISR count:                                      23
CPU 3 DPC highest execution time (µs):                1024.501880
CPU 3 DPC total execution time (s):                   0.123591
CPU 3 DPC count:                                      11860
_________________________________________________________________________________________________________
 
Possibly fixed my issue.

Continued googling of issues showed that it might have been hard drive related. I didn't take into consideration the age of my HDDs, one of which being ~7 years old. So I did investigating into that and discovered that for the entirety of my current build, my 2nd SSD actually turned out to be a very, very old HDD that might be upwards of 10 years old and my actual 2nd SSD wasn't even enabled. Not quite sure how it took so long for me to discover this but oh well. So I moved all of the filed from the old HDD to the newer (1yr) SSD and since then all has been fine. Played the problematic games for about 2 hours with no issue.
 

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