1. #1

    nvlddmkm.sys DPC Latency

    Hi everyone, been having DPC latency caused by my GTX 760, changing drivers with DDU hasn't done anything for that matter.
    I've been basically coping with it so far but I wanna fix it once and for all so I'm asking for your help.

    I run the tests without touching anything for one hour and 20 minutes.
    I've disabled everything in my bios that I'm not using (onboard video, unused SATA ports, C-States, EIST/Thermal Monitor)
    I disabled PowerMizer in the registry as I read that it helped.
    I use onboard Audio & LAN (both Realtek)

    I also noticed that USBPORT.sys spikes while in-game.

    My specs

    Gigabyte Z87-HD3
    Asus GTX 760
    Intel i5 4670k
    8GB of RAM (DDR3 Kingston 1600mhz CL9)


    http://i.imgur.com/BLclfp4.jpg
    http://i.imgur.com/UXDwJcA.jpg


    • Ad Bot

      advertising
      Beep.

        
       

  2. #2
    xilolee's Avatar
    Join Date
    Dec 2013
    Location
    World, Europe, Italy
    Posts
    1,719
    • specs System Specs
      • Motherboard:
        ASROCK FM2A88M Pro3+
      • CPU:
        AMD APU A10-7800 (65W/45W) Socket FM2+ 28nm Steamroller/Kaveri
      • Memory:
        10GB (Nanya and kingston ddr3-1333 9-9-9-24)
      • Graphics:
        See CPU: Radeon R7 720MHz
      • Sound Card:
        RealTek ALC662 (See motherboard)
      • Hard Drives:
        Seagate ST500DM002-1BD142 500GB 7200RPM
      • Power Supply:
        SuperFlower 450W 80+ Platinum SF-450P14PE
      • Case:
        Sharkoon VG4-S
      • Display:
        Samsung SyncMaster SA100 LS22A100NS-EN
      • Operating System:
        Windows 10 Home/Standard x64

    Re: nvlddmkm.sys DPC Latency

    Hi ravage. :)

    When does the problem appear?
    What program are you trying to use when that happens? (And... What happens?)

  3. #3

    Re: nvlddmkm.sys DPC Latency

    Quote Originally Posted by xilolee View Post
    Hi ravage. :)

    When does the problem appear?
    What program are you trying to use when that happens? (And... What happens?)
    I noticed that everytime I run Latencymon for ONE minute there's always ONE DPC latency spike that's shown on Latencymon (0,55-0,60 just like on the screenshot)

    It happens when idle and while in-game sessions. I notice it in game, could be extremely short micro freezes that I have sometimes.

  4. #4

    Re: nvlddmkm.sys DPC Latency

    I also just did a lot of googling and found this
    DPC Latency rspLLL64.sys, afd.sys, nvlddmkm.sys

    I've never used anything in the last 7 years than my HDD, I have windows on it.

    Could it be the source of my problem? Should I install windows on a SSD? I need to buy one I guess.

  5. #5
    xilolee's Avatar
    Join Date
    Dec 2013
    Location
    World, Europe, Italy
    Posts
    1,719
    • specs System Specs
      • Motherboard:
        ASROCK FM2A88M Pro3+
      • CPU:
        AMD APU A10-7800 (65W/45W) Socket FM2+ 28nm Steamroller/Kaveri
      • Memory:
        10GB (Nanya and kingston ddr3-1333 9-9-9-24)
      • Graphics:
        See CPU: Radeon R7 720MHz
      • Sound Card:
        RealTek ALC662 (See motherboard)
      • Hard Drives:
        Seagate ST500DM002-1BD142 500GB 7200RPM
      • Power Supply:
        SuperFlower 450W 80+ Platinum SF-450P14PE
      • Case:
        Sharkoon VG4-S
      • Display:
        Samsung SyncMaster SA100 LS22A100NS-EN
      • Operating System:
        Windows 10 Home/Standard x64

    Re: nvlddmkm.sys DPC Latency

    Could you try to remove IRST (intel rapid storage technology) and see if the problem disappear?

  6. #6

    Re: nvlddmkm.sys DPC Latency

    Quote Originally Posted by xilolee View Post
    Could you try to remove IRST (intel rapid storage technology) and see if the problem disappear?

    I don't have RST installed with the exe. I only install it with these files through Device Manager
    http://i.imgur.com/gIq65P1.jpg

    I try to see if my HDD was having health problems or whatever, this is what CrystalDiskInfo say about it. It looks good to me.
    http://i.imgur.com/FmZfcJQ.jpg


    But I'm going to uninstall the AHCI driver and go back to Microsoft driver and do some tests anyway.

  7. #7

    Re: nvlddmkm.sys DPC Latency

    Spike still happening in the first minute, what I tried to do is putting the HDD on another SATA port and uninstalled the intel RST driver & it still gives me this:
    http://i.imgur.com/Hf7XBVU.jpg

  8. #8
    xilolee's Avatar
    Join Date
    Dec 2013
    Location
    World, Europe, Italy
    Posts
    1,719
    • specs System Specs
      • Motherboard:
        ASROCK FM2A88M Pro3+
      • CPU:
        AMD APU A10-7800 (65W/45W) Socket FM2+ 28nm Steamroller/Kaveri
      • Memory:
        10GB (Nanya and kingston ddr3-1333 9-9-9-24)
      • Graphics:
        See CPU: Radeon R7 720MHz
      • Sound Card:
        RealTek ALC662 (See motherboard)
      • Hard Drives:
        Seagate ST500DM002-1BD142 500GB 7200RPM
      • Power Supply:
        SuperFlower 450W 80+ Platinum SF-450P14PE
      • Case:
        Sharkoon VG4-S
      • Display:
        Samsung SyncMaster SA100 LS22A100NS-EN
      • Operating System:
        Windows 10 Home/Standard x64

    Re: nvlddmkm.sys DPC Latency

    Quote Originally Posted by xilolee View Post
    Hi ravage. :)
    Rivage. Sorry!

    Would you try these steps?

    1. Left-click on Start, type directly msconfig, press enter.
      Is the radio button on normal startup?
    2. Launch this command from an elevated command prompt:
      dism /online /cleanup-image /checkhealth
      Do you get my same result?
      Read More:
    3. Advanced disk cleanup with cleanmgr:
      • Open an elevated command prompt
      • Type cleanmgr /sageset:1 and press enter.
      • Select all the options, or leave unticked the ones you prefer.
      • Type cleanmgr /sagerun:1 and press enter
      • Let it work till it finishes.

    4. Launch this command from an elevated command prompt:
      sfc /scannow
      If you get the following message:
      Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log %WinDir%\Logs\CBS\CBS.log
      Read Windows Update Forum Posting Instructions (click) and provide the necessary (and missing) informations to the experts.I.e., you should:
      • export and zip/compress the entire CBS folder on your desktop
      • open a new topic in the windows update sub-forum (in sysnative.com)
      • attach that zipped file to that new topic

      If the CBS compressed folder will be too large, you can check the second post on that thread (to use the sfcfix tool with a script) or you can use a (possibly fast) web service like MS OneDrive, Google Drive, DropBox, Box, Mega, Apple iCloud, Amazon Cloud Drive, and so forth...
      Instead if you get the following messages, go to the next step:
      Windows Resource Protection did not find any integrity violations
      Windows Resource Protection found corrupt files and successfully repaired them. Details are included in the CBS.Log %WinDir%\Logs\CBS\CBS.log
    5. Check you system partition, then post the result here. Steps:
      • Open an elevated command prompt.
      • Type chkdsk c: /b and press enter.
      • You'll get:
        The type of the file system is NTFS.
        Cannot lock current drive.
        Chkdsk cannot run because the volume is in use by another
        process. Would you like to schedule this volume to be
        checked the next time the system restarts? (Y/N)
      • Type Y and press enter.
      • Then restart/reboot and wait till it finishes this check.
      • To find chkdsk result:
        • Open an elevated command prompt
        • Copy/paste this command and press enter:
          Code:
          wevtutil qe application /c:1 /rd:true  /f:text /q:"*[System[Provider[(@Name='Microsoft-Windows-Wininit')]]]" > "%userprofile%\desktop\ChkDskLOG.txt" & notepad "%userprofile%\desktop\ChkDskLOG.txt"
        • It should create chkdsklog.txt on your desktop and open it: paste its content here.
        • If the command won't work, type eventvwr, press enter, in the event viewer window double-left-click Windows Logs to expand it, left-click Application, double-left-click the information event with source wininit, copy its content and post it here.

    6. Defragment your system drive (using windows default defragmenter). Steps:
      • Open an elevated command prompt
      • Type defrag c: /h and press enter
      • Wait till it finishes


    After all those operations, reboot your machine and see if the problem persists.



    If the problem persists:

    • Please provide answers for (answer the best that you can):
      1. System Manufacturer?
      2. Laptop or Desktop?
      3. Exact model number (if laptop, check label on bottom)
      4. OS ? (Windows 10, 8.1, 8, 7, Vista)
      5. x86 (32bit) or x64 (64bit)?
      6. Service pack?
      7. What was original installed OS on system?
      8. Is the OS an OEM version (came pre-installed on system) or full retail version (YOU purchased it from retailer)?
      9. Age of system? (hardware)
      10. Age of OS installation?
      11. Have you re-installed the OS?
      12. CPU
      13. RAM (brand, model, which slots are you using?)
      14. Video Card
      15. MotherBoard - (if NOT a laptop)
      16. Power Supply - brand & wattage (if laptop, skip this one)
      17. What security software are you using? (Firewall, antivirus, antimalware, antispyware, and so forth)
      18. Are you using proxy, vpn, ipfilters or similar software?
      19. Are you using Disk Image tools? (like daemon tools, alcohol 52% or 120%, virtual CloneDrive, roxio software)
      20. Are you currently under/overclocking? Are there overclocking software installed on your system?


    • Retrieve System Information, using speccy
      1. Download Speccy portable - actual version 1.29.714 (click), unzip/decompress it and put it on your desktop.
      2. When the program opens, it will retrieve some information regarding your system.
      3. Once it's done, select the File menu and choose Publish snapshot. Answer Yes to the confirmation message.
        (Or generate a log in your pc, if you prefer to not publish the snapshot for some reason)
      4. On the next screen that comes up, choose the Copy to Clipboard button and paste this link in your next reply.
        (Or upload here the generated log, in case you didn't publish the snapshot)




    • Facultative System information log (if previous point fails for some obscure reason)
      The following command should be run from an elevated command prompt.
      It should generate a log, named MsInfo.nfo, on your desktop, after some time (few seconds or minutes).
      Read More:
      Code:
      msinfo32 /nfo msinfo32 /nfo "%userprofile%\desktop\MsInfo.nfo"
      (Then upload it here)


    • Download and install the Windows Performance Toolkit - Windows Assessment and Deployment Kit (Windows ADK) for Windows 8.1 Update - adksetup.exe 1.36MB (click):
      Read More:
      Then open an elevated command prompt (right-click on the windows start button on bottom-left corner, left-click Command Prompt (Admin)) and launch these commands:
      Read More:

      You can also read the original tutorial/guide and its following posts for more informations:

      How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8) (click) (by Niemiro)

Similar Threads

  1. High DPC latency (nvlddmkm.sys)
    By Abbadon in forum Windows 7 | Windows Vista
    Replies: 0
    Last Post: 12-24-2015, 06:36 PM
  2. DPC Latency storport.sys / nvlddmkm.sys
    By rivage in forum Windows 7 | Windows Vista
    Replies: 9
    Last Post: 05-24-2015, 06:30 PM
  3. DPC Latency nvlddmkm.sys causing stuttering.
    By dweyri200 in forum Windows 8 | Windows RT
    Replies: 1
    Last Post: 04-30-2015, 10:58 PM
  4. Bad DPC latency.. HDAudbus.sys & nvlddmkm.sys
    By eox08 in forum Windows 7 | Windows Vista
    Replies: 0
    Last Post: 02-24-2015, 01:53 AM
  5. High DPC Latency most likely nvlddmkm.sys
    By latka in forum Windows 7 | Windows Vista
    Replies: 0
    Last Post: 08-09-2013, 11:42 AM

Log in

Log in