1. #1

    High DPC from storahci.sys

    Been dealing with these problem for nearly a week now. clean installed many AMD drivers, updated my asrock B75 pro 3 motherboards bios, updated the intel chipset driver and even reinstalled windows 10 on my boot SSD.

    Here's Latency Monitors report.

    _________________________________________________________________________________________________________
    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 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 0:00:10 (h:mm:ss) on all processors.




    _________________________________________________________________________________________________________
    SYSTEM INFORMATION
    _________________________________________________________________________________________________________
    Computer name: DESKTOP-1T4NBDV
    OS version: Windows 10 , 10.0, build: 15063 (x64)
    Hardware: ASRock, B75 Pro3
    CPU: GenuineIntel Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
    Logical processors: 4
    Processor groups: 1
    RAM: 8136 MB total




    _________________________________________________________________________________________________________
    CPU SPEED
    _________________________________________________________________________________________________________
    Reported CPU speed: 3392 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 (s): 31204.485158
    Average measured interrupt to process latency (s): 212.750967


    Highest measured interrupt to DPC latency (s): 31170.978688
    Average measured interrupt to DPC latency (s): 210.285701




    _________________________________________________________________________________________________________
    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 (s): 89.281545
    Driver with highest ISR routine execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation


    Highest reported total ISR routine time (%): 0.007258
    Driver with highest ISR total time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation


    Total time spent in ISRs (%) 0.007286


    ISR count (execution time <250 s): 631
    ISR count (execution time 250-500 s): 0
    ISR count (execution time 500-999 s): 0
    ISR count (execution time 1000-1999 s): 0
    ISR count (execution time 2000-3999 s): 0
    ISR count (execution time >=4000 s): 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 (s): 31199.783314
    Driver with highest DPC routine execution time: storahci.sys - MS AHCI Storport Miniport Driver, Microsoft Corporation


    Highest reported total DPC routine time (%): 10.176082
    Driver with highest DPC total execution time: storahci.sys - MS AHCI Storport Miniport Driver, Microsoft Corporation


    Total time spent in DPCs (%) 10.659266


    DPC count (execution time <250 s): 31118
    DPC count (execution time 250-500 s): 0
    DPC count (execution time 500-999 s): 2
    DPC count (execution time 1000-1999 s): 0
    DPC count (execution time 2000-3999 s): 0
    DPC count (execution time >=4000 s): 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 (s): 0.0
    Total time spent in hard pagefaults (%): 0.0
    Number of processes hit: 0




    _________________________________________________________________________________________________________
    PER CPU DATA
    _________________________________________________________________________________________________________
    CPU 0 Interrupt cycle time (s): 3.692184
    CPU 0 ISR highest execution time (s): 89.281545
    CPU 0 ISR total execution time (s): 0.001612
    CPU 0 ISR count: 353
    CPU 0 DPC highest execution time (s): 31199.783314
    CPU 0 DPC total execution time (s): 4.131570
    CPU 0 DPC count: 24160
    _________________________________________________________________________________________________________
    CPU 1 Interrupt cycle time (s): 0.098673
    CPU 1 ISR highest execution time (s): 31.895047
    CPU 1 ISR total execution time (s): 0.001187
    CPU 1 ISR count: 254
    CPU 1 DPC highest execution time (s): 273.737028
    CPU 1 DPC total execution time (s): 0.02340
    CPU 1 DPC count: 3110
    _________________________________________________________________________________________________________
    CPU 2 Interrupt cycle time (s): 0.125565
    CPU 2 ISR highest execution time (s): 7.214623
    CPU 2 ISR total execution time (s): 0.000093
    CPU 2 ISR count: 18
    CPU 2 DPC highest execution time (s): 31156.003538
    CPU 2 DPC total execution time (s): 0.043919
    CPU 2 DPC count: 1448
    _________________________________________________________________________________________________________
    CPU 3 Interrupt cycle time (s): 0.164081
    CPU 3 ISR highest execution time (s): 6.971108
    CPU 3 ISR total execution time (s): 0.000031
    CPU 3 ISR count: 6
    CPU 3 DPC highest execution time (s): 31156.941038
    CPU 3 DPC total execution time (s): 0.078035
    CPU 3 DPC count: 2536
    _________________________________________________________________________________________________________


    I'm honestly unsure where to go from here and with my google searches for the problem this seems like the best site for DPC issues. All microsoft Tech Support did for me was give me the runaround with stuff like "go to windows update, check for a new update if that doesn't work take your computer 50+ miles to a microsoft store and pay them to look at it"


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  2. #2

    Re: High DPC from storahci.sys

    I don't know if I fixed it, but I took off my side panel on my case for whatever reason and I saw that some of my sata cables looked a little loose though all SATA drives were reading fine and such. Could loose cables actually cause high DPC or am I just getting lucky again the problem isn't showing itself currently?

  3. #3
    xilolee's Avatar
    Join Date
    Dec 2013
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    World, Europe, Italy
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    • specs System Specs
      • Manufacturer:
        XILOLEE.com
      • Model Number:
        XILO
      • Motherboard:
        ASROCK FM2A88M Pro3+ chipset A88X Bolton-D4
      • CPU:
        A10-7800, 4 CPU, 4 thr, 65/45W, FM2+, 28nm, Steamroller/Kaveri
      • Memory:
        10GB (Nanya and kingston ddr3-1333 9-9-9-24)
      • Graphics:
        Radeon R7 720MHz (8 GPU cores, integrated in CPU)
      • Sound Card:
        RealTek ALC662 (integrated in MB)
      • Hard Drives:
        Seagate ST500DM002-1BD142 500GB 7200RPM
      • Power Supply:
        SuperFlower 450W 80+ Platinum (SF-450P14PE)
      • Case:
        Sharkoon VG4-S
      • Cooling:
        Realtek RTL8111GR (NIC integrated in MB)
      • Display:
        Samsung SyncMaster SA100 LS22A100NS-EN
      • Operating System:
        Windows 10 Home/Standard x64

    Re: High DPC from storahci.sys

    Hi Fire2box.

    Yes, it could be.

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