1. #1

    Highest Measured interrupt to prcess Latency 19289.534617 / WIN10

    I realize you guys have probably heard this and dealt with this a million times but can someone please help me find a way to fix this :
    Highest measured interrupt to process latency (Ás): 19289.534617.
    It is causing random spikes in my audio randomly and is to frequent for me to continue with my music.
    I have tried disabling everything in my device manager, i have checked that IRQ's are all seperate including 3 USB devices.
    I do use PCIe (NvME 950pro for Win10 + LSI Megaraid for samples ) not sure if this is a problem !
    XPERF trace CPU.rar link : https://1drv.ms/u/s!AnTp6vyKYzE84QaMBtnwgADrR03s i am not to familar with XPERF so i hope i did it long enough for it to pick up the Huge interrupt process latency culprit !

    I am hoping someone here can help because i am exuasted with this and i just dont know what it could be ?


    Can i point out that i always disable my network card always during music production, it was enabled for these tests though, so its safe to say that although that driver may have caused high interrupts during the xperf and latency mon tests it is not a problem when disabled !

    Thanks

    _________________________________________________________________________________________________
    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 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 0:05:21 (h:mm:ss) on all processors.


    _________________________________________________________________________________________________________
    SYSTEM INFORMATION
    _________________________________________________________________________________________________________
    Computer name: DESKTOP-SLOQ40F
    OS version: Windows 10 , 10.0, build: 15063 (x64)
    Hardware: HP Z800 Workstation, Hewlett-Packard, 0AECh
    CPU: GenuineIntel Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
    Logical processors: 24
    Processor groups: 1
    RAM: 98287 MB total


    _________________________________________________________________________________________________________
    CPU SPEED
    _________________________________________________________________________________________________________
    Reported CPU speed: 3463 MHz
    Measured CPU speed: 1 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.

    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 (Ás): 19289.534617
    Average measured interrupt to process latency (Ás): 3.523001

    Highest measured interrupt to DPC latency (Ás): 112.947811
    Average measured interrupt to DPC latency (Ás): 1.871814


    _________________________________________________________________________________________________________
    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 (Ás): 114.278660
    Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

    Highest reported total ISR routine time (%): 0.048945
    Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

    Total time spent in ISRs (%) 0.066627

    ISR count (execution time <250 Ás): 570447
    ISR count (execution time 250-500 Ás): 0
    ISR count (execution time 500-999 Ás): 0
    ISR count (execution time 1000-1999 Ás): 0
    ISR count (execution time 2000-3999 Ás): 0
    ISR count (execution time >=4000 Ás): 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 (Ás): 451.043604
    Driver with highest DPC routine execution time: ntoskrnl.exe - NT Kernel & System, Microsoft Corporation

    Highest reported total DPC routine time (%): 0.047322
    Driver with highest DPC total execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

    Total time spent in DPCs (%) 0.171615

    DPC count (execution time <250 Ás): 2586576
    DPC count (execution time 250-500 Ás): 0
    DPC count (execution time 500-999 Ás): 23
    DPC count (execution time 1000-1999 Ás): 0
    DPC count (execution time 2000-3999 Ás): 0
    DPC count (execution time >=4000 Ás): 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.


    Process with highest pagefault count: none

    Total number of hard pagefaults 0
    Hard pagefault count of hardest hit process: 0
    Highest hard pagefault resolution time (Ás): 0.0
    Total time spent in hard pagefaults (%): 0.0
    Number of processes hit: 0


    _________________________________________________________________________________________________________
    PER CPU DATA
    _________________________________________________________________________________________________________
    CPU 0 Interrupt cycle time (s): 8.698363
    CPU 0 ISR highest execution time (Ás): 0.0
    CPU 0 ISR total execution time (s): 0.0
    CPU 0 ISR count: 0
    CPU 0 DPC highest execution time (Ás): 108.467514
    CPU 0 DPC total execution time (s): 0.822389
    CPU 0 DPC count: 1115421
    _________________________________________________________________________________________________________
    CPU 1 Interrupt cycle time (s): 2.692597
    CPU 1 ISR highest execution time (Ás): 0.0
    CPU 1 ISR total execution time (s): 0.0
    CPU 1 ISR count: 0
    CPU 1 DPC highest execution time (Ás): 451.043604
    CPU 1 DPC total execution time (s): 0.064614
    CPU 1 DPC count: 9869
    _________________________________________________________________________________________________________
    CPU 2 Interrupt cycle time (s): 4.439234
    CPU 2 ISR highest execution time (Ás): 12.885937
    CPU 2 ISR total execution time (s): 0.005255
    CPU 2 ISR count: 924
    CPU 2 DPC highest execution time (Ás): 450.273174
    CPU 2 DPC total execution time (s): 0.304166
    CPU 2 DPC count: 33890
    _________________________________________________________________________________________________________
    CPU 3 Interrupt cycle time (s): 4.133710
    CPU 3 ISR highest execution time (Ás): 0.0
    CPU 3 ISR total execution time (s): 0.0
    CPU 3 ISR count: 0
    CPU 3 DPC highest execution time (Ás): 449.841467
    CPU 3 DPC total execution time (s): 0.057884
    CPU 3 DPC count: 5593
    _________________________________________________________________________________________________________
    CPU 4 Interrupt cycle time (s): 4.173646
    CPU 4 ISR highest execution time (Ás): 0.0
    CPU 4 ISR total execution time (s): 0.0
    CPU 4 ISR count: 0
    CPU 4 DPC highest execution time (Ás): 450.458273
    CPU 4 DPC total execution time (s): 0.113689
    CPU 4 DPC count: 13405
    _________________________________________________________________________________________________________
    CPU 5 Interrupt cycle time (s): 8.104111
    CPU 5 ISR highest execution time (Ás): 108.635576
    CPU 5 ISR total execution time (s): 2.617638
    CPU 5 ISR count: 89920
    CPU 5 DPC highest execution time (Ás): 450.034652
    CPU 5 DPC total execution time (s): 1.490589
    CPU 5 DPC count: 182159
    _________________________________________________________________________________________________________
    CPU 6 Interrupt cycle time (s): 4.173139
    CPU 6 ISR highest execution time (Ás): 0.0
    CPU 6 ISR total execution time (s): 0.0
    CPU 6 ISR count: 0
    CPU 6 DPC highest execution time (Ás): 449.800462
    CPU 6 DPC total execution time (s): 0.066464
    CPU 6 DPC count: 8985
    _________________________________________________________________________________________________________
    CPU 7 Interrupt cycle time (s): 4.270713
    CPU 7 ISR highest execution time (Ás): 0.0
    CPU 7 ISR total execution time (s): 0.0
    CPU 7 ISR count: 0
    CPU 7 DPC highest execution time (Ás): 449.524978
    CPU 7 DPC total execution time (s): 0.019974
    CPU 7 DPC count: 2704
    _________________________________________________________________________________________________________
    CPU 8 Interrupt cycle time (s): 4.024161
    CPU 8 ISR highest execution time (Ás): 0.0
    CPU 8 ISR total execution time (s): 0.0
    CPU 8 ISR count: 0
    CPU 8 DPC highest execution time (Ás): 449.333526
    CPU 8 DPC total execution time (s): 0.055239
    CPU 8 DPC count: 8643
    _________________________________________________________________________________________________________
    CPU 9 Interrupt cycle time (s): 4.086650
    CPU 9 ISR highest execution time (Ás): 0.0
    CPU 9 ISR total execution time (s): 0.0
    CPU 9 ISR count: 0
    CPU 9 DPC highest execution time (Ás): 449.004909
    CPU 9 DPC total execution time (s): 0.013028
    CPU 9 DPC count: 1309
    _________________________________________________________________________________________________________
    CPU 10 Interrupt cycle time (s): 3.965524
    CPU 10 ISR highest execution time (Ás): 0.0
    CPU 10 ISR total execution time (s): 0.0
    CPU 10 ISR count: 0
    CPU 10 DPC highest execution time (Ás): 448.740687
    CPU 10 DPC total execution time (s): 0.036662
    CPU 10 DPC count: 6129
    _________________________________________________________________________________________________________
    CPU 11 Interrupt cycle time (s): 4.029866
    CPU 11 ISR highest execution time (Ás): 0.0
    CPU 11 ISR total execution time (s): 0.0
    CPU 11 ISR count: 0
    CPU 11 DPC highest execution time (Ás): 448.393878
    CPU 11 DPC total execution time (s): 0.016231
    CPU 11 DPC count: 1989
    _________________________________________________________________________________________________________
    CPU 12 Interrupt cycle time (s): 4.761477
    CPU 12 ISR highest execution time (Ás): 0.0
    CPU 12 ISR total execution time (s): 0.0
    CPU 12 ISR count: 0
    CPU 12 DPC highest execution time (Ás): 447.655790
    CPU 12 DPC total execution time (s): 0.941206
    CPU 12 DPC count: 109239
    _________________________________________________________________________________________________________
    CPU 13 Interrupt cycle time (s): 3.881043
    CPU 13 ISR highest execution time (Ás): 0.0
    CPU 13 ISR total execution time (s): 0.0
    CPU 13 ISR count: 0
    CPU 13 DPC highest execution time (Ás): 447.437771
    CPU 13 DPC total execution time (s): 0.037419
    CPU 13 DPC count: 4681
    _________________________________________________________________________________________________________
    CPU 14 Interrupt cycle time (s): 4.100108
    CPU 14 ISR highest execution time (Ás): 0.0
    CPU 14 ISR total execution time (s): 0.0
    CPU 14 ISR count: 0
    CPU 14 DPC highest execution time (Ás): 446.529021
    CPU 14 DPC total execution time (s): 0.168460
    CPU 14 DPC count: 14176
    _________________________________________________________________________________________________________
    CPU 15 Interrupt cycle time (s): 5.480124
    CPU 15 ISR highest execution time (Ás): 114.278660
    CPU 15 ISR total execution time (s): 1.153234
    CPU 15 ISR count: 20716
    CPU 15 DPC highest execution time (Ás): 446.021369
    CPU 15 DPC total execution time (s): 0.527504
    CPU 15 DPC count: 44184
    _________________________________________________________________________________________________________
    CPU 16 Interrupt cycle time (s): 3.730960
    CPU 16 ISR highest execution time (Ás): 0.0
    CPU 16 ISR total execution time (s): 0.0
    CPU 16 ISR count: 0
    CPU 16 DPC highest execution time (Ás): 445.845798
    CPU 16 DPC total execution time (s): 0.059190
    CPU 16 DPC count: 8098
    _________________________________________________________________________________________________________
    CPU 17 Interrupt cycle time (s): 3.748261
    CPU 17 ISR highest execution time (Ás): 15.356627
    CPU 17 ISR total execution time (s): 0.008361
    CPU 17 ISR count: 1846
    CPU 17 DPC highest execution time (Ás): 445.283858
    CPU 17 DPC total execution time (s): 0.034389
    CPU 17 DPC count: 5067
    _________________________________________________________________________________________________________
    CPU 18 Interrupt cycle time (s): 3.848019
    CPU 18 ISR highest execution time (Ás): 0.0
    CPU 18 ISR total execution time (s): 0.0
    CPU 18 ISR count: 0
    CPU 18 DPC highest execution time (Ás): 444.673982
    CPU 18 DPC total execution time (s): 0.050263
    CPU 18 DPC count: 6538
    _________________________________________________________________________________________________________
    CPU 19 Interrupt cycle time (s): 4.016919
    CPU 19 ISR highest execution time (Ás): 0.0
    CPU 19 ISR total execution time (s): 0.0
    CPU 19 ISR count: 0
    CPU 19 DPC highest execution time (Ás): 444.226971
    CPU 19 DPC total execution time (s): 0.002772
    CPU 19 DPC count: 343
    _________________________________________________________________________________________________________
    CPU 20 Interrupt cycle time (s): 3.799560
    CPU 20 ISR highest execution time (Ás): 0.0
    CPU 20 ISR total execution time (s): 0.0
    CPU 20 ISR count: 0
    CPU 20 DPC highest execution time (Ás): 443.514871
    CPU 20 DPC total execution time (s): 0.079962
    CPU 20 DPC count: 9077
    _________________________________________________________________________________________________________
    CPU 21 Interrupt cycle time (s): 3.881684
    CPU 21 ISR highest execution time (Ás): 0.0
    CPU 21 ISR total execution time (s): 0.0
    CPU 21 ISR count: 0
    CPU 21 DPC highest execution time (Ás): 442.968524
    CPU 21 DPC total execution time (s): 0.014345
    CPU 21 DPC count: 1876
    _________________________________________________________________________________________________________
    CPU 22 Interrupt cycle time (s): 3.680261
    CPU 22 ISR highest execution time (Ás): 0.0
    CPU 22 ISR total execution time (s): 0.0
    CPU 22 ISR count: 0
    CPU 22 DPC highest execution time (Ás): 442.86890
    CPU 22 DPC total execution time (s): 0.010193
    CPU 22 DPC count: 1509
    _________________________________________________________________________________________________________
    CPU 23 Interrupt cycle time (s): 13.856336
    CPU 23 ISR highest execution time (Ás): 15.532775
    CPU 23 ISR total execution time (s): 1.348739
    CPU 23 ISR count: 457041
    CPU 23 DPC highest execution time (Ás): 435.136876
    CPU 23 DPC total execution time (s): 8.235222
    CPU 23 DPC count: 991715
    _________________________________________________________________________________________________________


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  2. #2
    jcgriff2's Avatar
    Join Date
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    • specs System Specs
      • Manufacturer:
        HP
      • Model Number:
        HP ENVY TouchSmart 17-j130us Notebook - E8A04UA
      • Motherboard:
        HP Insyde 720265-501 6050A2549501-MB-A02
      • CPU:
        Intel Core i7-4700MQ Processor with Turbo Boost up to 3.4GHz.
      • Memory:
        12GB DDR3L SDRAM (2 DIMM)
      • Graphics:
        Intel HD graphics 4600 with up to 1792MB total graphics memory
      • Sound Card:
        Beats Audio quad speakers and two subwoofers
      • Hard Drives:
        1TB 5400RPM hard drive with HP ProtectSmart Hard Drive Protection
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        Hitachi 500 GB SSD; 7 TB USB External
      • Power Supply:
        90w
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        Laptop
      • Display:
        17.3-inch diagonal HD+ BrightView LED-backlit touchscreen display (1600 x 900)
      • Operating System:
        Windows 8.1

    Re: Highest Measured interrupt to prcess Latency 19289.534617 / WIN10

    Update audio drivers.

    Make sure that BIOS is updated.

    If you have an Internet Security suite, remove it - Uninstallers (removal tools) for common Windows antivirus software—ESET Knowledgebase

    Regards. . .

    jcgriff2
    writhziden says thanks for this.

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  3. #3
    writhziden's Avatar
    Join Date
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    Colorado
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    • specs System Specs
      • Manufacturer:
        Sony
      • Model Number:
        VPCF232FX/B
      • Motherboard:
        Sony Corporation VAIO
      • CPU:
      • Memory:
        8.00 GB Crucial CT2KIT51264BF1339 DDR3 1333
      • Graphics:
      • Sound Card:
        Realtek High Definition Audio/nVidia High Definition Audio
      • Hard Drives:
        TOSHIBA MK5061GSY 500 GB (465 GB actual)
      • Case:
        Laptop black matte case with backlit keyboard
      • Cooling:
        Air cooling via fan and heat exchanger heatsink
      • Display:
        Laptop display
      • Operating System:
        Windows 7 Home Premium 64 Bit

    Re: Highest Measured interrupt to prcess Latency 19289.534617 / WIN10

    Your report shows Sonar Platinum sending multiple calls under ntoskrnl.exe, but the devices with highest duration are the USB device(s) and display card.

    I suspect one or more of your USB device drivers is causing conflicts. Have you made sure your USB device drivers are up to date, including the drivers both for your motherboard and for the devices you are connecting to the USB ports? What about your NVIDIA device drivers? Have you tried installing only the NVIDIA drivers and the PhysX software (exclude GeForce Experience and other extraneous software). Have you tried disabling the NVIDIA High Definition audio?

    Do problems occur with your USB devices disconnected, or are you able to test without them?
    jcgriff2 says thanks for this.

  4. #4

    Re: Highest Measured interrupt to prcess Latency 19289.534617 / WIN10

    I have found the problem it is a Bios setting Called: Enhanced Memory Performance . As soon as i disabled it Latency mon runs Nice! That took a while to locate and i thought it was the USB Ports also !

    Now with latencyMon and only PC running the results are solid and consistent ( 1 hour test )
    Current measured interrupt to process latency = 10 to 30us
    Highest measured interrupt to process latency = 200

    Now with LatencyMon and Sonar running the results are solid and consistent ( 1 hour test )
    Current measured interrupt to process latency = 10 to 30 us
    Highest measured interrupt to process latency -= 600 ( Audio interface : 1024 samples )

    Thanks for the tips i appreciate it.
    writhziden says thanks for this.

  5. #5
    writhziden's Avatar
    Join Date
    May 2012
    Location
    Colorado
    Posts
    2,307
    • specs System Specs
      • Manufacturer:
        Sony
      • Model Number:
        VPCF232FX/B
      • Motherboard:
        Sony Corporation VAIO
      • CPU:
      • Memory:
        8.00 GB Crucial CT2KIT51264BF1339 DDR3 1333
      • Graphics:
      • Sound Card:
        Realtek High Definition Audio/nVidia High Definition Audio
      • Hard Drives:
        TOSHIBA MK5061GSY 500 GB (465 GB actual)
      • Case:
        Laptop black matte case with backlit keyboard
      • Cooling:
        Air cooling via fan and heat exchanger heatsink
      • Display:
        Laptop display
      • Operating System:
        Windows 7 Home Premium 64 Bit

    Re: Highest Measured interrupt to prcess Latency 19289.534617 / WIN10

    Quote Originally Posted by taccess View Post
    I have found the problem it is a Bios setting Called: Enhanced Memory Performance . As soon as i disabled it Latency mon runs Nice!
    Thank you for posting back your findings. I will add this thread to my favorites as a suggestion to future forum members having similar problems.

  6. #6
    jcgriff2's Avatar
    Join Date
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    • specs System Specs
      • Manufacturer:
        HP
      • Model Number:
        HP ENVY TouchSmart 17-j130us Notebook - E8A04UA
      • Motherboard:
        HP Insyde 720265-501 6050A2549501-MB-A02
      • CPU:
        Intel Core i7-4700MQ Processor with Turbo Boost up to 3.4GHz.
      • Memory:
        12GB DDR3L SDRAM (2 DIMM)
      • Graphics:
        Intel HD graphics 4600 with up to 1792MB total graphics memory
      • Sound Card:
        Beats Audio quad speakers and two subwoofers
      • Hard Drives:
        1TB 5400RPM hard drive with HP ProtectSmart Hard Drive Protection
      • Disk Drives:
        Hitachi 500 GB SSD; 7 TB USB External
      • Power Supply:
        90w
      • Case:
        Laptop
      • Display:
        17.3-inch diagonal HD+ BrightView LED-backlit touchscreen display (1600 x 900)
      • Operating System:
        Windows 8.1

    Re: Highest Measured interrupt to prcess Latency 19289.534617 / WIN10

    Awesome that you got this solved.

    Regards. . .

    jcgriff2

    p.s. Thanks, Mike
    writhziden says thanks for this.

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