Share via

DPC Latency Caused by Many drivers.

Anonymous
2018-10-10T14:26:47+00:00

This is a very frustrating issue, and ive tried looking everywhere for fixes but cant find any. Here is some information below and i would appreciate any help. It causes many audio issues and can virtually not listen to any sort of audio.

_________________________________________________________________________________________________________

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):   11910.935290

Average measured interrupt to process latency (µs):   27.132701

Highest measured interrupt to DPC latency (µs):       11897.807078

Average measured interrupt to DPC latency (µs):       17.903110

_________________________________________________________________________________________________________

 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):              6102.975427

Driver with highest ISR routine execution time:       Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total ISR routine time (%):          0.025887

Driver with highest ISR total time:                   Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in ISRs (%)                          0.033847

ISR count (execution time <250 µs):                   106699

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

ISR count (execution time 500-999 µs):                7232

ISR count (execution time 1000-1999 µs):              773

ISR count (execution time 2000-3999 µs):              341

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):              9528.724715

Driver with highest DPC routine execution time:       ACPI.sys - ACPI Driver for NT, Microsoft Corporation

Highest reported total DPC routine time (%):          0.108837

Driver with highest DPC total execution time:         Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%)                          0.224935

DPC count (execution time <250 µs):                   2929387

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

DPC count (execution time 500-999 µs):                16192

DPC count (execution time 1000-1999 µs):              4882

DPC count (execution time 2000-3999 µs):              5093

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                       5067

Hard pagefault count of hardest hit process:          802

Number of processes hit:                              59

_________________________________________________________________________________________________________

 PER CPU DATA

_________________________________________________________________________________________________________

CPU 0 Interrupt cycle time (s):                       255.852555

CPU 0 ISR highest execution time (µs):                6102.975427

CPU 0 ISR total execution time (s):                   8.056281

CPU 0 ISR count:                                      109980

CPU 0 DPC highest execution time (µs):                9528.724715

CPU 0 DPC total execution time (s):                   36.835079

CPU 0 DPC count:                                      2066222

_________________________________________________________________________________________________________

CPU 1 Interrupt cycle time (s):                       177.355297

CPU 1 ISR highest execution time (µs):                2251.754986

CPU 1 ISR total execution time (s):                   0.461042

CPU 1 ISR count:                                      3633

CPU 1 DPC highest execution time (µs):                6272.425214

CPU 1 DPC total execution time (s):                   2.430036

CPU 1 DPC count:                                      32164

_________________________________________________________________________________________________________

CPU 2 Interrupt cycle time (s):                       142.480857

CPU 2 ISR highest execution time (µs):                2247.901709

CPU 2 ISR total execution time (s):                   0.077677

CPU 2 ISR count:                                      1278

CPU 2 DPC highest execution time (µs):                4660.060897

CPU 2 DPC total execution time (s):                   7.944059

CPU 2 DPC count:                                      544234

_________________________________________________________________________________________________________

CPU 3 Interrupt cycle time (s):                       130.032397

CPU 3 ISR highest execution time (µs):                1542.794516

CPU 3 ISR total execution time (s):                   0.018679

CPU 3 ISR count:                                      172

CPU 3 DPC highest execution time (µs):                3883.733262

CPU 3 DPC total execution time (s):                   0.922848

CPU 3 DPC count:                                      54186

_________________________________________________________________________________________________________

CPU 4 Interrupt cycle time (s):                       157.249216

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):                3823.362536

CPU 4 DPC total execution time (s):                   1.570406

CPU 4 DPC count:                                      44147

_________________________________________________________________________________________________________

CPU 5 Interrupt cycle time (s):                       187.377882

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):                2389.255698

CPU 5 DPC total execution time (s):                   2.543875

CPU 5 DPC count:                                      92556

_________________________________________________________________________________________________________

CPU 6 Interrupt cycle time (s):                       158.474224

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):                3851.206197

CPU 6 DPC total execution time (s):                   2.662644

CPU 6 DPC count:                                      64703

_________________________________________________________________________________________________________

CPU 7 Interrupt cycle time (s):                       171.610420

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):                3806.676638

CPU 7 DPC total execution time (s):                   2.334564

CPU 7 DPC count:                                      57770

_________________________________________________________________________________________________________

Windows for home | Windows 10 | Devices and drivers

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

2 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Anonymous
    2018-11-27T04:20:30+00:00

    Hi,

    I have the same problem, not this big fortunately, but anyway..

    Check if the IRQs are shared - in this case, all devices sitting on the same irq will cause tremendous lag as they fight for control.

    In my case I have the SDD controller, audio and video drivers sitting on the same IRQ - ACPI.sys is popping up really frequently if I run LatencyMon. It can compete only with Nvidia drivers :)

    Run MsInfo32 to see if your system has any conflicts

    Was this answer helpful?

    0 comments
  2. VARADHARAJAN K 9,686 Reputation points Volunteer Moderator
    2018-10-10T16:58:09+00:00

    which software you used to analysis ,  share the software here , i will analysis in my laptop

    Was this answer helpful?

    0 comments