Windows 10: storport.sys and ndis.sys DPC latency fix?

Discus and support storport.sys and ndis.sys DPC latency fix? in Windows 10 BSOD Crashes and Debugging to solve the problem; So I built my PC back during the summer after getting a summer job, and since building, I have diagnosed and fixed a few issues, but one keeps... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by EMB3R14, Nov 25, 2018.

  1. EMB3R14 Win User

    storport.sys and ndis.sys DPC latency fix?


    So I built my PC back during the summer after getting a summer job, and since building, I have diagnosed and fixed a few issues, but one keeps occurring and I am unable to fix myself. I am not completely sure if it is a hardware issue or purely software based.


    Anyway, I've been getting some latency issues that have caused stuttering and sometimes lag while streaming videos from YouTube and Netflix, playing games, and sometimes even while browsing websites. I downloaded LatencyMon to help find whats causing these issues, and I have pointed out two major .sys driver files that are causing my stuttering. Those being "storport.sys", which is the major cause, and "ndis.sys" being the smaller, but yet significant cause.


    storport.sys definition in LatencyMon is "Microsoft Storage Port Driver", and ndis.sys description is "Network Driver Interface Specifications".

    storport.sys gives me upwards of 100,000 in LatencyMon, and I believe ndis.sys gives me about 20,000.

    I've read somewhere that storport.sys latency is mostly caused by the Samsung m.2 SSD's but I'm not sure how to fix this

    I keep all my drivers updated using DriverEasy

    Specs:

    MB: Aorus X470 Ultra Gaming ATX AM4 Socket

    CPU: AMD Ryzen 2600

    GPU: Gigabyte Geforce GTX 1060 6GB Windforce OC Edition

    Memory: G.Skill Ripjaw V-Series 16GB DDR4-3200 - F4-3200C16D-16GVKB (Possible latency cause?)

    Storage: Samsung 970 EVO 250GB (Boot)

    Storage: Seagate Barracuda 2TB HDD (Mass)

    Storage: Western Digital "Blue?" 3TB HDD (Backup) (Not 100% sure which drive this is, I think it's blue)

    Network Card: TP-Link TL-WDN4800 PCIe x1 802.11a/b/g/n (Possibly cause of ndis.sys latency?)

    Operating System: Windows 10 Pro 64bit

    Here's the link to the PcPartPicker parts list if its needed: https://ca.pcpartpicker.com/list/7VqHRJ


    Here's what LatencyMon comes up with after experiencing a storport.sys latency spike:

    _________________________________________________________________________________________________________

    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. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. 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 0:10:19 (h:mm:ss) on all processors.





    _________________________________________________________________________________________________________

    SYSTEM INFORMATION

    _________________________________________________________________________________________________________

    Computer name: TYS-PC

    OS version: Windows 10 , 10.0, build: 17763 (x64)

    Hardware: X470 AORUS ULTRA GAMING, Gigabyte Technology Co., Ltd., X470 AORUS ULTRA GAMING-CF

    CPU: AuthenticAMD AMD Ryzen 5 2600 Six-Core Processor

    Logical processors: 6

    Processor groups: 1

    RAM: 16331 MB total





    _________________________________________________________________________________________________________

    CPU SPEED

    _________________________________________________________________________________________________________

    Reported CPU speed: 340 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): 100830.20

    Average measured interrupt to process latency (µs): 3.116927



    Highest measured interrupt to DPC latency (µs): 100827.60

    Average measured interrupt to DPC latency (µs): 1.344504





    _________________________________________________________________________________________________________

    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): 148.150

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



    Highest reported total ISR routine time (%): 0.095580

    Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation



    Total time spent in ISRs (%) 0.105838



    ISR count (execution time <250 µs): 228176

    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): 100834.210

    Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation



    Highest reported total DPC routine time (%): 0.062271

    Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 416.94 , NVIDIA Corporation



    Total time spent in DPCs (%) 0.169238



    DPC count (execution time <250 µs): 1872845

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

    DPC count (execution time 500-999 µs): 227

    DPC count (execution time 1000-1999 µs): 0

    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: chrome.exe



    Total number of hard pagefaults 33063

    Hard pagefault count of hardest hit process: 8281

    Number of processes hit: 84





    _________________________________________________________________________________________________________

    PER CPU DATA

    _________________________________________________________________________________________________________

    CPU 0 Interrupt cycle time (s): 14.904984

    CPU 0 ISR highest execution time (µs): 148.150

    CPU 0 ISR total execution time (s): 3.907992

    CPU 0 ISR count: 224044

    CPU 0 DPC highest execution time (µs): 100834.210

    CPU 0 DPC total execution time (s): 6.092103

    CPU 0 DPC count: 1833174

    _________________________________________________________________________________________________________

    CPU 1 Interrupt cycle time (s): 1.837817

    CPU 1 ISR highest execution time (µs): 72.60

    CPU 1 ISR total execution time (s): 0.017628

    CPU 1 ISR count: 1600

    CPU 1 DPC highest execution time (µs): 533.150

    CPU 1 DPC total execution time (s): 0.092153

    CPU 1 DPC count: 13765

    _________________________________________________________________________________________________________

    CPU 2 Interrupt cycle time (s): 1.719505

    CPU 2 ISR highest execution time (µs): 59.50

    CPU 2 ISR total execution time (s): 0.003827

    CPU 2 ISR count: 517

    CPU 2 DPC highest execution time (µs): 110.490

    CPU 2 DPC total execution time (s): 0.042660

    CPU 2 DPC count: 11228

    _________________________________________________________________________________________________________

    CPU 3 Interrupt cycle time (s): 1.836355

    CPU 3 ISR highest execution time (µs): 2.460

    CPU 3 ISR total execution time (s): 0.000320

    CPU 3 ISR count: 427

    CPU 3 DPC highest execution time (µs): 85.570

    CPU 3 DPC total execution time (s): 0.018822

    CPU 3 DPC count: 4977

    _________________________________________________________________________________________________________

    CPU 4 Interrupt cycle time (s): 1.813737

    CPU 4 ISR highest execution time (µs): 1.820

    CPU 4 ISR total execution time (s): 0.000497

    CPU 4 ISR count: 701

    CPU 4 DPC highest execution time (µs): 228.950

    CPU 4 DPC total execution time (s): 0.019418

    CPU 4 DPC count: 4982

    _________________________________________________________________________________________________________

    CPU 5 Interrupt cycle time (s): 1.796899

    CPU 5 ISR highest execution time (µs): 4.290

    CPU 5 ISR total execution time (s): 0.000660

    CPU 5 ISR count: 887

    CPU 5 DPC highest execution time (µs): 108.190

    CPU 5 DPC total execution time (s): 0.020504

    CPU 5 DPC count: 4948

    _________________________________________________________________________________________________________



    Thanks to anyone that takes a look into this. You're really helping me out. The stutters are getting quite annoying. storport.sys and ndis.sys DPC latency fix? :p

    :)
     
    EMB3R14, Nov 25, 2018
    #1

  2. DPC Latency with Storport.sys and Wdf0 1000.sys


    Like this? It appears "Standard SATA AHCI Controller"


    storport.sys and ndis.sys DPC latency fix? [​IMG]
     
    BradShoemaker, Nov 25, 2018
    #2
  3. DPC Latency with Storport.sys and Wdf0 1000.sys


    I have one Storage Controller here is what the Drivers say


    storport.sys and ndis.sys DPC latency fix? [​IMG]
     
    BradShoemaker, Nov 25, 2018
    #3
  4. arachnaut Win User

    storport.sys and ndis.sys DPC latency fix?

    DPC Latency with Storport.sys and Wdf0 1000.sys


    I'm afraid it is not that easy - that is a special MS port for Storage Spaces.
    You need to open the CPU branch and look at each port:

    storport.sys and ndis.sys DPC latency fix? [​IMG]
     
    arachnaut, Nov 25, 2018
    #4
Thema:

storport.sys and ndis.sys DPC latency fix?

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