Major Latency Issues

Dissolution · Jun 11, 2014

I have been having this strange memory leak for the past few weeks where my system will all of a sudden be incredibly bogged down, and the audio will start to crack and break as I am watching something or gaming. I thought it was a compatibility issue with my onboard sound, but I turned that off and the problem still persists. Today I was reading and I thought I would test my latency, and I found out that the USBport.sys is causing major latency issues in my system. The problem is that no matter where I look nobody has a real solution. Some have said that Windows released a patch for it, but when I tried to install the patch it told me that I already had it on my system..... Additionally, when I restart my computer it is generally fine for a day or two, but then it begins the cycle all over with latency problems.

I could really use some help to figure out why this is happening... I am open to any suggestions from anyone out there who might have some knowledge on this subject. I will try my best to provide any additional information that people may need to help me diagnose this issue completely. I should note that I have done a full virus/malware scan and found no issues. I have also updated all of the drivers on my board to see if that will fix the issue.

Thank you in advance.

Here are some pictures of what I am experiencing.... For the amount of money I spent on this rig this type of latency should not be occurring.

jcgriff2 · Jun 11, 2014

Dissolution said:
... Today I was reading and I thought I would test my latency, and I found out that the USBport.sys is causing major latency issues in my system.

USBport.sys is a Microsoft Windows driver and suggests the problem may lie with a USB device.

Try unplugging USB device(s) and see how the system responds.

Info - Driver Reference Table - USBPORT.SYS

Regards. . .

jcgriff2

Dissolution · Jun 11, 2014

I tried unplugging everything I possibly could but I am still getting crazy latency from my dxgkrnl.sys.... It is up to 1400 at the moment with almost nothing installed. Should I just completely wipe my system at this point?

Dissolution · Jun 11, 2014

Can anyone help me with this? I just formatted and I am still getting latency issues. dxgkrnl.sys is doing the same thing after doing a complete wipe of my system.... This is insane... Is it my video card going? I just got it a few months ago.... anyone???

Dissolution · Jun 12, 2014

I am only really getting the latency from ataport.SYS now.... I have read 20 different forums and nobody seems to have a real answer....

TomasD · Jun 12, 2014

Dear,

To properly troubleshoot issues with high/frequent DPCs/IRPs, we require a XPERF trace. Please follow these steps to generate one:

Download Windows Software Development Kit (SDK) for Windows and run the setup.
Select Windows Performance Toolkit feature (all the others can be unchecked) and proceed with the download/installation.
Once the installation finishes, open an elevated Command Prompt by right-clicking on CMD.EXE shortcut in your start menu and selecting Run As Administrator from the context menu.
Type the following command, which will start tracing, in the Command Prompt window you just opened:
Code:
```
xperf -on PROC_THREAD+LOADER+PROFILE+INTERRUPT+DPC+DRIVERS+POWER+IDLE_STATES -stackwalk Profile -BufferSize 1024 -MinBuffers 256 -MaxBuffers 256 -MaxFile 256 -FileMode Circular
```
If you see a yellow warning "xperf: warning: This system is not fully configured for x64 stack tracing" after running the above command, please complete these extra steps (otherwise, proceed to the step #5):
Read More:
1. Run the following command which will stop the tracing:
  
  Code:
  
  xperf -stop
2. Run the following command to enable stack tracing (by disabling Paging Executive):
  
  Code:
  
  REG ADD "HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management" -v DisablePagingExecutive -d 0x1 -t REG_DWORD -f
3. Reboot the computer
4. Once computer reboots, proceed from the step #3
If you see a red error "xperf: error: NT Kernel Logger: A device attached to the system is not functioning. (0x1f)" after running the above command, please complete these extra steps (otherwise, proceed to the step #5):
Read More:
1. Run the following command to disable Driver Verifier, which causes the above error:
  
  Code:
  
  verifier /reset
2. Reboot the computer
3. Once computer reboots, proceed from the step #3
If you see a red error "xperf: error: NT Kernel Logger: Cannot create a file when that file already exists. (0xb7)", please do the following (otherwise, proceed to the step #5):
Read More:
Make sure you do not have any programs that captures ETW data already running. Some examples of these are:
- Process Explorer
- Process Hacker
- Resource Monitor
- Process Monitor
- Latency Monitor
- Another instance of XPERF or WPR
Perform some activities with your computer for few minutes, making sure the issues you reported are reproduced.
Run the following command, which will stop the tracing, in the command prompt window you already have opened:
Code:
```
xperf -stop -d C:\CPU.etl
```
Compress file C:\CPU.etl
Upload the compressed file to a file sharing service (e.g. OneDrive or DropBox).
Share the download link here.

Thank you.

Dissolution · Jun 12, 2014

Thank you so much, but I have already run into a problem. CMD says that xperf is not recognized as an internal or external command?

Dissolution · Jun 12, 2014

Do I need the Windows 7 version? This says Windows 8.1 in the link you gave me.

Dissolution · Jun 12, 2014

I have tried installing the Windows 7 version and it is still telling me the same thing... This is a nightmare.

TomasD · Jun 12, 2014

Dissolution said:
Thank you so much, but I have already run into a problem. CMD says that xperf is not recognized as an internal or external command?

Have you tried rebooting the computer after installation? Windows 8.1 version is fine for Windows 7.

Dissolution · Jun 12, 2014

Yep I rebooted after the first attempt failed. I will try and reboot again now.

Dissolution · Jun 12, 2014

Okay I managed to see yellow text and did the next step only nothing happened after I typed out "HKLM\System etc...

Dissolution · Jun 12, 2014

Okay I just got red text saying that MaxFile requires a size in MB but I typed exactly what you said.... wtf

Dissolution · Jun 12, 2014

Nevermind I fixed it

Dissolution · Jun 12, 2014

Okay I didn't get any errors that time.... So now I just do random things on my computer and hope it logs it basically?

Dissolution · Jun 12, 2014

Wow... I don't know if the file saved or not I just got a BSOD out of nowhere....

Dissolution · Jun 12, 2014

https://www.dropbox.com/s/gjr04nvb2zi5cjq/CPU.etl

TomasD · Jun 12, 2014

Could you please try installing the latest version of IUSB3XHC driver from here?

Dissolution · Jun 12, 2014

Sorry I did not respond I was at my graduation all day lol. I did what you said with no issues. Thank you so much for taking time out of your day to help me... Seriously this is such a horrible issue. Anyways, the drivers are installed. What is the next step from here?

Dissolution · Jun 13, 2014

Hopefully I will hear back from you soon so I can resolve this completely.

Major Latency Issues

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