Windows 10: Latency problems?

Discus and support Latency problems? in Windows 10 Drivers and Hardware to solve the problem; ____________________________________________________________________________________________________ _____ CONCLUSION... Discussion in 'Windows 10 Drivers and Hardware' started by BattleNetFlex, Nov 17, 2019.

  1. Latency problems?


    ____________________________________________________________________________________________________ _____
    CONCLUSION
    ____________________________________________________________________________________________________ _____
    Your system seems to be having difficulty handling real-time audio and other tasks. You may experience drop outs, clicks or pops due to buffer underruns. 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 0:18:57 (h:mm:ss) on all processors.


    ____________________________________________________________________________________________________ _____
    SYSTEM INFORMATION
    ____________________________________________________________________________________________________ _____
    Computer name: BEHINDSCEDULE
    OS version: Windows 10 , 10.0, version 1809, build: 17763 (x64)
    Hardware: MS-7A58, MSI, Z270 XPOWER GAMING TITANIUM (MS-7A58)
    CPU: GenuineIntel Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz
    Logical processors: 8
    Processor groups: 1
    RAM: 32724 MB total


    ____________________________________________________________________________________________________ _____
    CPU SPEED
    ____________________________________________________________________________________________________ _____
    Reported CPU speed: 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.

    WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature.



    ____________________________________________________________________________________________________ _____
    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): 1066.50
    Average measured interrupt to process latency (µs): 4.471421

    Highest measured interrupt to DPC latency (µs): 1061.80
    Average measured interrupt to DPC latency (µs): 1.372408


    ____________________________________________________________________________________________________ _____
    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): 133.942143
    Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

    Highest reported total ISR routine time (%): 0.338076
    Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

    Total time spent in ISRs (%) 0.390165

    ISR count (execution time <250 µs): 3069978
    ISR count (execution time 250-500 µs): 0
    ISR count (execution time 500-999 µs): 0
    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): 1078.603571
    Driver with highest DPC routine execution time: CLASSPNP.SYS - SCSI Class System Dll, Microsoft Corporation

    Highest reported total DPC routine time (%): 0.173280
    Driver with highest DPC total execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

    Total time spent in DPCs (%) 0.423174

    DPC count (execution time <250 µs): 6172024
    DPC count (execution time 250-500 µs): 0
    DPC count (execution time 500-999 µs): 3
    DPC count (execution time 1000-1999 µs): 1
    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: backgroundtaskhost.exe

    Total number of hard pagefaults 4844
    Hard pagefault count of hardest hit process: 1283
    Number of processes hit: 40


    ____________________________________________________________________________________________________ _____
    PER CPU DATA
    ____________________________________________________________________________________________________ _____
    CPU 0 Interrupt cycle time (s): 92.837866
    CPU 0 ISR highest execution time (µs): 133.942143
    CPU 0 ISR total execution time (s): 35.018979
    CPU 0 ISR count: 2825319
    CPU 0 DPC highest execution time (µs): 1078.603571
    CPU 0 DPC total execution time (s): 28.585662
    CPU 0 DPC count: 5572541
    ____________________________________________________________________________________________________ _____
    CPU 1 Interrupt cycle time (s): 21.616207
    CPU 1 ISR highest execution time (µs): 41.061429
    CPU 1 ISR total execution time (s): 0.470814
    CPU 1 ISR count: 244337
    CPU 1 DPC highest execution time (µs): 105.755714
    CPU 1 DPC total execution time (s): 8.073890
    CPU 1 DPC count: 302088
    ____________________________________________________________________________________________________ _____
    CPU 2 Interrupt cycle time (s): 7.404918
    CPU 2 ISR highest execution time (µs): 4.494762
    CPU 2 ISR total execution time (s): 0.000587
    CPU 2 ISR count: 322
    CPU 2 DPC highest execution time (µs): 174.237857
    CPU 2 DPC total execution time (s): 0.676819
    CPU 2 DPC count: 84256
    ____________________________________________________________________________________________________ _____
    CPU 3 Interrupt cycle time (s): 5.989870
    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): 73.253810
    CPU 3 DPC total execution time (s): 0.171555
    CPU 3 DPC count: 37623
    ____________________________________________________________________________________________________ _____
    CPU 4 Interrupt cycle time (s): 6.825271
    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): 62.821905
    CPU 4 DPC total execution time (s): 0.223909
    CPU 4 DPC count: 42362
    ____________________________________________________________________________________________________ _____
    CPU 5 Interrupt cycle time (s): 6.696666
    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): 143.172857
    CPU 5 DPC total execution time (s): 0.188326
    CPU 5 DPC count: 39001
    ____________________________________________________________________________________________________ _____
    CPU 6 Interrupt cycle time (s): 6.855793
    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): 143.156667
    CPU 6 DPC total execution time (s): 0.283290
    CPU 6 DPC count: 47424
    ____________________________________________________________________________________________________ _____
    CPU 7 Interrupt cycle time (s): 6.495270
    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): 71.890714
    CPU 7 DPC total execution time (s): 0.289509
    CPU 7 DPC count: 46733
    ____________________________________________________________________________________________________ _____

    :)
     
    BattleNetFlex, Nov 17, 2019
    #1
  2. dalchina Win User

    Windows 10 1709 System Restore problems...


    That seems to be an attempt at Option 2 in the tutorial, which requires you to
    a. Boot to a command prompt (Did you?)
    b. You then seem to be mixing steps 3,4 and 5, thus your command is incorrect.

    I suggest Option 1 is easier.

    If you still have problems, please repost listing each specific step and saying which option from the tutorial you are using. Thanks.
     
    dalchina, Nov 17, 2019
    #2
  3. MClark.1 Win User
    Wdf01000.sys Latency - Windows 10

    Hi Bowzin, after two days searching I (think) finally solved it, my highest latency is 0,49ms now. 1) Download Driver Booster 5 and update all drivers, even if you have done this manually at device manager. BIOS, mouse, everything.

    2) I followed all steps at Audient web page regarding latency: power plan, HD and SSD properties, etc.

    Thats it, I now plan to reduce it even more, but this is a huge step. I made several test while updating drivers and each time it threw a different driver problem with latency above 1,5ms.
     
    MClark.1, Nov 17, 2019
    #3
  4. dalchina Win User

    Latency problems?

    Do I have latency problems?



    Latency problems? [​IMG]

    - there's my laptop for comparison- not specially brilliant spec. (see below)

    I only found wdf01000.sys in WinSxS - not an active driver in my case.

    See analysis here:
    Wdf01000.sys Causing high DPC Latency - but how can I know what driver is the problem
    - uses XPERF to create a trace.

    Another here:
    Latency caused by unidentified driver (wdf01000.sys) - Gearslutz Pro Audio Community
    with the odd idea/suggestion

    Another thread here (in Dutch)
    Hoge latency door ACPI.sys en Wdf01000.sys. Geluid hangt. - Windows Clients - GoT
     
    dalchina, Nov 17, 2019
    #4
Thema:

Latency problems?

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