High interrupt to process latency

Posted by shmopsy@reddit | buildapc | View on Reddit | 4 comments

Pls help! I have audio-video stutters while playing games, watching videos. Due to latency mon I found out I have a huge interrupt to process latency. Maybe you can hel[p me to solve the problem. Power plan - ultimate performance; third-party programms disabled.
PC specs:

CPU - I5-12400

GPU - RTX 3070

RAM:32 gb 3600 MHZ (XMP)

Motherboard - Asus TUF gaming B660m +D4

NVME SSD 1 tb

I also add LatencyMon stats

Processor group size: 12

RAM: 32509 MB total

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CPU SPEED

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Reported CPU speed (WMI): 250 MHz

Reported CPU speed (registry): 2496 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): 1994,60

Average measured interrupt to process latency (µs): 3,349167

Highest measured interrupt to DPC latency (µs): 251,60

Average measured interrupt to DPC latency (µs): 1,487999

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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): 24,489183

Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0,000185

Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Total time spent in ISRs (%) 0,000325

ISR count (execution time <250 µs): 4276

ISR count (execution time 250-500 µs): 0

ISR count (execution time 500-1000 µs): 0

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): 282,654647

Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 561.09 , NVIDIA Corporation

Highest reported total DPC routine time (%): 0,006388

Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 561.09 , NVIDIA Corporation

Total time spent in DPCs (%) 0,022799

DPC count (execution time <250 µs): 275560

DPC count (execution time 250-500 µs): 0

DPC count (execution time 500-10000 µs): 3

DPC count (execution time 1000-2000 µs): 0

DPC count (execution time 2000-4000 µs): 0

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: system

Total number of hard pagefaults 6155

Hard pagefault count of hardest hit process: 1429

Number of processes hit: 64

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PER CPU DATA

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CPU 0 Interrupt cycle time (s): 3,011496

CPU 0 ISR highest execution time (µs): 24,489183

CPU 0 ISR total execution time (s): 0,013450

CPU 0 ISR count: 3860

CPU 0 DPC highest execution time (µs): 282,654647

CPU 0 DPC total execution time (s): 0,766133

CPU 0 DPC count: 232863

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CPU 1 Interrupt cycle time (s): 0,559477

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): 62,975962

CPU 1 DPC total execution time (s): 0,098376

CPU 1 DPC count: 18367

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CPU 2 Interrupt cycle time (s): 0,514757

CPU 2 ISR highest execution time (µs): 4,245593

CPU 2 ISR total execution time (s): 0,000363

CPU 2 ISR count: 140

CPU 2 DPC highest execution time (µs): 110,548478

CPU 2 DPC total execution time (s): 0,074526

CPU 2 DPC count: 11278

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CPU 3 Interrupt cycle time (s): 0,345331

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): 31,671474

CPU 3 DPC total execution time (s): 0,017258

CPU 3 DPC count: 4877

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CPU 4 Interrupt cycle time (s): 0,260529

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): 22,826923

CPU 4 DPC total execution time (s): 0,005388

CPU 4 DPC count: 2263

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CPU 5 Interrupt cycle time (s): 0,259478

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): 34,092949

CPU 5 DPC total execution time (s): 0,002976

CPU 5 DPC count: 1095

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CPU 6 Interrupt cycle time (s): 0,246246

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): 27,564503

CPU 6 DPC total execution time (s): 0,002449

CPU 6 DPC count: 1002

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CPU 7 Interrupt cycle time (s): 0,247345

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): 28,064103

CPU 7 DPC total execution time (s): 0,001187

CPU 7 DPC count: 300

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CPU 8 Interrupt cycle time (s): 0,269102

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): 25,327724

CPU 8 DPC total execution time (s): 0,002253

CPU 8 DPC count: 1115

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CPU 9 Interrupt cycle time (s): 0,272323

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): 26,247596

CPU 9 DPC total execution time (s): 0,000835

CPU 9 DPC count: 206

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CPU 10 Interrupt cycle time (s): 0,286446

CPU 10 ISR highest execution time (µs): 3,491186

CPU 10 ISR total execution time (s): 0,000229

CPU 10 ISR count: 276

CPU 10 DPC highest execution time (µs): 77,114183

CPU 10 DPC total execution time (s): 0,011123

CPU 10 DPC count: 1497

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CPU 11 Interrupt cycle time (s): 0,261075

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): 26,766827

CPU 11 DPC total execution time (s): 0,002771

CPU 11 DPC count: 700