Windows 8 and 8.1 Forums


Audio crackling and system interrupts

  1. #1


    Posts : 5
    Windows 8.1

    Audio crackling and system interrupts


    I recently started hearing crackles in youtube videos and notice that on the task manager when watching them system interrupts were using 1-5% of the cpu. When nothing is open on the computer it hoovers around 0-0.3%. I get sound crackling only when using html5 as the video player. I am using chrome and it also happens with IE. And now I started to notice that my mouse pointer background process ring starts popping up every minute or two sometimes more frequently than that. I do not know if theese are all connected but I do know I can't whatch a video without the crackling driving me crazy. Please help!

      My System SpecsSystem Spec

  2. #2


    Download and run the free Resplendece Latency Mon. It may help you isolate what the problem is.

    Resplendence Software - Advanced System Tools and Developer Components

    There is also a "DPC Latency Checker" program but it is invalid for Windows 8/8.1 so don't use that.


    Popping and crackling are often reported audio problems. There is no "one fix" for the problem. Each one has to be handled individually. One instance may be the sound driver, another may be a video driver, another could be wi-fi, etc.
      My System SpecsSystem Spec

  3. #3


    Posts : 5
    Windows 8.1


    I have already used latencymon but all the problematic drivers seem to be windows ones and I don't know what causes them to freak out. Also I have the latest drivers for everything.
    ____________________________________________________________________________________________________ _____
    CONCLUSION
    ____________________________________________________________________________________________________ _____
    Your system appears to be suitable for handling real-time audio and other tasks without dropouts.
    LatencyMon has been analyzing your system for 0:01:47 (h:mm:ss) on all processors.




    ____________________________________________________________________________________________________ _____
    SYSTEM INFORMATION
    ____________________________________________________________________________________________________ _____
    Computer name: THESKULLKID
    OS version: Windows 8 , 6.2, build: 9200 (x64)
    Hardware: CM6330_CM6630_CM6730_CM6830_M11AA-8, ASUSTeK Computer INC., CM6330_CM6630_CM6730_CM6830_M11AA
    CPU: GenuineIntel Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
    Logical processors: 4
    Processor groups: 1
    RAM: 8144 MB total




    ____________________________________________________________________________________________________ _____
    CPU SPEED
    ____________________________________________________________________________________________________ _____
    Reported CPU speed: 3193,0 MHz
    Measured CPU speed: 2184,0 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.




    ____________________________________________________________________________________________________ _____
    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): 138,774621
    Average measured interrupt to process latency (Ás): 7,227392


    Highest measured interrupt to DPC latency (Ás): 136,260335
    Average measured interrupt to DPC latency (Ás): 2,237947




    ____________________________________________________________________________________________________ _____
    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): 97,932665
    Driver with highest ISR routine execution time: USBPORT.SYS - Πρόγραμμα οδήγησης θύρας USB 1.1 & 2.0, Microsoft Corporation


    Highest reported total ISR routine time (%): 0,197524
    Driver with highest ISR total time: USBPORT.SYS - Πρόγραμμα οδήγησης θύρας USB 1.1 & 2.0, Microsoft Corporation


    Total time spent in ISRs (%) 0,215081


    ISR count (execution time <250 Ás): 225306
    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): 280,426245
    Driver with highest DPC routine execution time: tcpip.sys - Πρόγραμμα οδήγησης TCP/IP, Microsoft Corporation


    Highest reported total DPC routine time (%): 0,390455
    Driver with highest DPC total execution time: CM10864.sys - C-Media Audio WDM Driver, C-Media Electronics Inc


    Total time spent in DPCs (%) 1,266134


    DPC count (execution time <250 Ás): 752533
    DPC count (execution time 250-500 Ás): 0
    DPC count (execution time 500-999 Ás): 2
    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: chrome.exe


    Total number of hard pagefaults 60
    Hard pagefault count of hardest hit process: 60
    Highest hard pagefault resolution time (Ás): 375,168494
    Total time spent in hard pagefaults (%): 0,002593
    Number of processes hit: 1




    ____________________________________________________________________________________________________ _____
    PER CPU DATA
    ____________________________________________________________________________________________________ _____
    CPU 0 Interrupt cycle time (s): 8,779865
    CPU 0 ISR highest execution time (Ás): 97,932665
    CPU 0 ISR total execution time (s): 0,920547
    CPU 0 ISR count: 225306
    CPU 0 DPC highest execution time (Ás): 153,512371
    CPU 0 DPC total execution time (s): 3,633427
    CPU 0 DPC count: 634203
    ____________________________________________________________________________________________________ _____
    CPU 1 Interrupt cycle time (s): 2,466029
    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): 280,426245
    CPU 1 DPC total execution time (s): 0,568311
    CPU 1 DPC count: 34863
    ____________________________________________________________________________________________________ _____
    CPU 2 Interrupt cycle time (s): 2,530343
    CPU 2 ISR highest execution time (Ás): 0,0
    CPU 2 ISR total execution time (s): 0,0
    CPU 2 ISR count: 0
    CPU 2 DPC highest execution time (Ás): 219,351394
    CPU 2 DPC total execution time (s): 0,579845
    CPU 2 DPC count: 35307
    ____________________________________________________________________________________________________ _____
    CPU 3 Interrupt cycle time (s): 2,649486
    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): 263,690260
    CPU 3 DPC total execution time (s): 0,637470
    CPU 3 DPC count: 48162
    ____________________________________________________________________________________________________ _____


    Click image for larger version
      My System SpecsSystem Spec

  4. #4


    Since it is, apparently, only the videos, watch a video and run the Latency Mon and see if something shows up.
      My System SpecsSystem Spec

  5. #5


    Posts : 5
    Windows 8.1


    I ran latencymon throughout a youtube video. Here are the results:
    ____________________________________________________________________________________________________ _____
    CONCLUSION
    ____________________________________________________________________________________________________ _____
    Your system appears to be suitable for handling real-time audio and other tasks without dropouts.
    LatencyMon has been analyzing your system for 0:10:01 (h:mm:ss) on all processors.




    ____________________________________________________________________________________________________ _____
    SYSTEM INFORMATION
    ____________________________________________________________________________________________________ _____
    Computer name: THESKULLKID
    OS version: Windows 8 , 6.2, build: 9200 (x64)
    Hardware: CM6330_CM6630_CM6730_CM6830_M11AA-8, ASUSTeK Computer INC., CM6330_CM6630_CM6730_CM6830_M11AA
    CPU: GenuineIntel Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
    Logical processors: 4
    Processor groups: 1
    RAM: 8144 MB total




    ____________________________________________________________________________________________________ _____
    CPU SPEED
    ____________________________________________________________________________________________________ _____
    Reported CPU speed: 3193,0 MHz
    Measured CPU speed: 2138,0 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.




    ____________________________________________________________________________________________________ _____
    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): 219,720663
    Average measured interrupt to process latency (Ás): 7,13730


    Highest measured interrupt to DPC latency (Ás): 195,834946
    Average measured interrupt to DPC latency (Ás): 2,252684




    ____________________________________________________________________________________________________ _____
    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): 118,578453
    Driver with highest ISR routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation


    Highest reported total ISR routine time (%): 0,191587
    Driver with highest ISR total time: USBPORT.SYS - Πρόγραμμα οδήγησης θύρας USB 1.1 & 2.0, Microsoft Corporation


    Total time spent in ISRs (%) 0,204837


    ISR count (execution time <250 Ás): 1250669
    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): 260,745381
    Driver with highest DPC routine execution time: tcpip.sys - Πρόγραμμα οδήγησης TCP/IP, Microsoft Corporation


    Highest reported total DPC routine time (%): 0,430093
    Driver with highest DPC total execution time: CM10864.sys - C-Media Audio WDM Driver, C-Media Electronics Inc


    Total time spent in DPCs (%) 1,360314


    DPC count (execution time <250 Ás): 4513234
    DPC count (execution time 250-500 Ás): 0
    DPC count (execution time 500-999 Ás): 2
    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.


    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 48
    Hard pagefault count of hardest hit process: 44
    Highest hard pagefault resolution time (Ás): 35112,625744
    Total time spent in hard pagefaults (%): 0,001749
    Number of processes hit: 4




    ____________________________________________________________________________________________________ _____
    PER CPU DATA
    ____________________________________________________________________________________________________ _____
    CPU 0 Interrupt cycle time (s): 53,262628
    CPU 0 ISR highest execution time (Ás): 118,578453
    CPU 0 ISR total execution time (s): 4,924413
    CPU 0 ISR count: 1250669
    CPU 0 DPC highest execution time (Ás): 194,435014
    CPU 0 DPC total execution time (s): 22,176718
    CPU 0 DPC count: 3839391
    ____________________________________________________________________________________________________ _____
    CPU 1 Interrupt cycle time (s): 13,864372
    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): 239,580332
    CPU 1 DPC total execution time (s): 3,729222
    CPU 1 DPC count: 250957
    ____________________________________________________________________________________________________ _____
    CPU 2 Interrupt cycle time (s): 12,008415
    CPU 2 ISR highest execution time (Ás): 0,0
    CPU 2 ISR total execution time (s): 0,0
    CPU 2 ISR count: 0
    CPU 2 DPC highest execution time (Ás): 241,614469
    CPU 2 DPC total execution time (s): 3,242530
    CPU 2 DPC count: 193677
    ____________________________________________________________________________________________________ _____
    CPU 3 Interrupt cycle time (s): 15,548875
    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): 260,745381
    CPU 3 DPC total execution time (s): 3,554358
    CPU 3 DPC count: 229211
    ____________________________________________________________________________________________________ _____

    Click image for larger version
      My System SpecsSystem Spec

  6. #6


    I'm at a loss. Hopefully someone else will post and help. Sorry
      My System SpecsSystem Spec

  7. #7


    Posts : 5
    Windows 8.1


    Are the system interrupts even supposed to be on the task manager? Because If they are and if their CPU usage is normal I should be looking for something else. Also I have a slight suspicion my problems source may be the cheapo mobo that came with my prebuilt computer that I upgraded. Maybe the onboard audio or networking hardware are bad? And lastly since I have a prebuilt computer I do not know the excact model of the mobo (It is not written on it too) and the only thing identification I could find is M11AA-GR and a whole bunch of other numbers. I googled them and all It found was some sites selling the pc and a it's asus page (which by the way has old drivers and no BIOS updates). Is there any other way I can find the latest chipset drivers and BIOS for my mobo? (Also ASUS's BIOS update utility finds no updates).
      My System SpecsSystem Spec

  8. #8
      My System SpecsSystem Spec

  9. #9


    Posts : 5
    Windows 8.1


    Unfortunately it didn't provide information I didn't already know. I decided to live with it until windows 10 release and if it still persists I will take more drastic measures(like swapping out hardware as I suspect it might be the crappy mobo causing the problems).
      My System SpecsSystem Spec

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