Hi all,
I have insane DPC latency on my new AM5 rig (X670-E Taichi & 7800X3D) which is causing audio crackling every few seconds. I feel like I've tried everything and it's driving me insane. Things I've tried:
- Multiple Windows installs
- Removed peripherals
- Multiple driver versions
- Different GPU
LatencyMon says it has something to do with ACPI.sys or Wdf01000.sys Anyone with similar issues? Mostly seems to happen when watching video's on YouTube or during meeting (Teams, Webex)
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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. 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 0:14:19 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: ALEX-DESKTOP
OS version: Windows 11, 10.0, version 2009, build: 22621 (x64)
Hardware: X670E Taichi, ASRock
BIOS: 1.28
CPU: AuthenticAMD AMD Ryzen 7 7800X3D 8-Core Processor
Logical processors: 16
Processor groups: 1
Processor group size: 16
RAM: 31864 MB total
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CPU SPEED
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Reported CPU speed (WMI): 4201 MHz
Reported CPU speed (registry): 420 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.
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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): 9060,20
Average measured interrupt to process latency (µs): 19,347410
Highest measured interrupt to DPC latency (µs): 9056,30
Average measured interrupt to DPC latency (µs): 15,035645
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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): 343,070
Driver with highest ISR routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Highest reported total ISR routine time (%): 0,008027
Driver with highest ISR total time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Total time spent in ISRs (%) 0,008027
ISR count (execution time <250 µs): 1121454
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 2
ISR count (execution time 1000-2000 µs): 0
ISR count (execution time 2000-4000 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): 9994,970
Driver with highest DPC routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Highest reported total DPC routine time (%): 0,108905
Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Total time spent in DPCs (%) 0,296910
DPC count (execution time <250 µs): 3049343
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 1232
DPC count (execution time 1000-2000 µs): 2
DPC count (execution time 2000-4000 µs): 0
DPC count (execution time >=4000 µs): 1
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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 1029
Hard pagefault count of hardest hit process: 343
Number of processes hit: 20
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 60,130784
CPU 0 ISR highest execution time (µs): 343,070
CPU 0 ISR total execution time (s): 1,077027
CPU 0 ISR count: 1112142
CPU 0 DPC highest execution time (µs): 9994,970
CPU 0 DPC total execution time (s): 27,222275
CPU 0 DPC count: 2402136
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CPU 1 Interrupt cycle time (s): 20,106403
CPU 1 ISR highest execution time (µs): 149,760
CPU 1 ISR total execution time (s): 0,026323
CPU 1 ISR count: 9314
CPU 1 DPC highest execution time (µs): 658,50
CPU 1 DPC total execution time (s): 3,900503
CPU 1 DPC count: 196298
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CPU 2 Interrupt cycle time (s): 18,623096
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): 685,330
CPU 2 DPC total execution time (s): 3,583368
CPU 2 DPC count: 194177
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CPU 3 Interrupt cycle time (s): 16,076653
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): 1284,490
CPU 3 DPC total execution time (s): 2,505107
CPU 3 DPC count: 112295
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CPU 4 Interrupt cycle time (s): 8,993893
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): 671,70
CPU 4 DPC total execution time (s): 1,351669
CPU 4 DPC count: 51863
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CPU 5 Interrupt cycle time (s): 8,956495
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): 688,440
CPU 5 DPC total execution time (s): 0,995412
CPU 5 DPC count: 37194
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CPU 6 Interrupt cycle time (s): 2,761732
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): 658,480
CPU 6 DPC total execution time (s): 0,129247
CPU 6 DPC count: 6395
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CPU 7 Interrupt cycle time (s): 2,865107
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): 648,330
CPU 7 DPC total execution time (s): 0,144747
CPU 7 DPC count: 6749
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CPU 8 Interrupt cycle time (s): 4,736440
CPU 8 ISR highest execution time (µs): 0,0
CPU 8 ISR total execution time (s): 0,0
CPU 8 ISR count: 0
CPU 8 DPC highest execution time (µs): 653,940
CPU 8 DPC total execution time (s): 0,337154
CPU 8 DPC count: 14685
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CPU 9 Interrupt cycle time (s): 4,868990
CPU 9 ISR highest execution time (µs): 0,0
CPU 9 ISR total execution time (s): 0,0
CPU 9 ISR count: 0
CPU 9 DPC highest execution time (µs): 651,750
CPU 9 DPC total execution time (s): 0,505927
CPU 9 DPC count: 20406
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CPU 10 Interrupt cycle time (s): 1,807016
CPU 10 ISR highest execution time (µs): 0,0
CPU 10 ISR total execution time (s): 0,0
CPU 10 ISR count: 0
CPU 10 DPC highest execution time (µs): 647,040
CPU 10 DPC total execution time (s): 0,051568
CPU 10 DPC count: 3036
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CPU 11 Interrupt cycle time (s): 1,867127
CPU 11 ISR highest execution time (µs): 0,0
CPU 11 ISR total execution time (s): 0,0
CPU 11 ISR count: 0
CPU 11 DPC highest execution time (µs): 670,790
CPU 11 DPC total execution time (s): 0,046384
CPU 11 DPC count: 2506
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CPU 12 Interrupt cycle time (s): 1,360333
CPU 12 ISR highest execution time (µs): 0,0
CPU 12 ISR total execution time (s): 0,0
CPU 12 ISR count: 0
CPU 12 DPC highest execution time (µs): 279,060
CPU 12 DPC total execution time (s): 0,014944
CPU 12 DPC count: 1109
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CPU 13 Interrupt cycle time (s): 1,459092
CPU 13 ISR highest execution time (µs): 0,0
CPU 13 ISR total execution time (s): 0,0
CPU 13 ISR count: 0
CPU 13 DPC highest execution time (µs): 526,710
CPU 13 DPC total execution time (s): 0,012147
CPU 13 DPC count: 794
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CPU 14 Interrupt cycle time (s): 1,293341
CPU 14 ISR highest execution time (µs): 0,0
CPU 14 ISR total execution time (s): 0,0
CPU 14 ISR count: 0
CPU 14 DPC highest execution time (µs): 367,40
CPU 14 DPC total execution time (s): 0,010149
CPU 14 DPC count: 594
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CPU 15 Interrupt cycle time (s): 1,173206
CPU 15 ISR highest execution time (µs): 0,0
CPU 15 ISR total execution time (s): 0,0
CPU 15 ISR count: 0
CPU 15 DPC highest execution time (µs): 68,450
CPU 15 DPC total execution time (s): 0,001847
CPU 15 DPC count: 341
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