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  1. #61

    Exclamation Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Quote Originally Posted by bwana View Post
    well i finally got around to installing the the newer assessment and deployment kit. But i get this error:
    C:\Users\Admin\Desktop>xperf %userprofile%\Desktop\trace.etl
    xperf: error: C:\Users\Admin\Desktop\trace.etl: The parameter is incorrect. (0x80070057).


    Microsoft (R) Windows (R) Performance Analyzer Version 6.3.9600
    Performance Analyzer Command Line
    Copyright (c) 2013 Microsoft Corporation. All rights reserved.


    Usage: xperf options ...


    xperf -help start for logger start options
    xperf -help providers for known tracing flags
    xperf -help stackwalk for stack walking options
    xperf -help stop for logger stop options
    xperf -help merge for merge multiple trace files
    xperf -help processing for trace processing options
    xperf -help symbols for symbol decoding configuration
    xperf -help query for query options
    xperf -help mark for mark and mark-flush
    xperf -help format for time and timespan formats on the command line
    xperf -help profiles for profile options

    then i tried this
    C:\Users\Admin\Desktop>xperf trace.etl

    and got the same error
    &

    Quote Originally Posted by Manolo View Post
    I get error when I run xperf% userprofile% \ Desktop \ trace.etl
    please help me i have windows 8.1


    Download this instead of link(s) posted from the begining of this thread

    Download Windows Assessment and Deployment Kit (ADK) for Windows® 8 from Official Microsoft Download Center

    :cheers:


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  2. #62

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)-dpc-jpg

    This looks good, right ?

  3. #63

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    I am using Windows 7 Enterprise 64-bit. I think that a recent update has been causing latency on this desktop machine, as well as my laptop that runs Win7 Professional 64-bit. Things seemed fine up until about 10 days ago, then both of them started having problems. Now I can't listen to audio or watch video without major stuttering. DPC Latency Checker goes way in to the red, off the top of the chart, with just my audio player and Mozilla open with a few tabs. I am wondering if a Chrome update or a Windows Update caused it. I use the latest version of Chrome 64-bit.

    I am having trouble getting Performance Analyzer to open the trace. Under Part 2, for this step:
    "Finally type this line and press Enter:
    xperf %userprofile%\Desktop\trace.etl"

    I get this error: "xperf: error: trace.etl: The parameter is incorrect. (0x80070057)."

    So I opened the Windows Performance Analyzer GUI, and used it to open the trace file. But I don't see the DPC CPU Usage graph that the instructions mention. I expanded the headings "CPU Usage (Precise)" and "DPC/ISR", but don't find that graph.

  4. #64

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    I figured it out. It seems Windows Performance Analyzer has moved things around a bit since this OP was written. The graph is called DPC/ISR: DPC/ISR Duration by Module/Function. It's a main graph with an expansion arrow to its left. I right-clicked on it and selected Add Graph to Analysis View. That gave me a chart that listed ndis.sys, tcip.sys and netio.sys as the culprits. I am using the latest driver available from the manufacturer for my Qualcomm Atheros 8151 NIC.

    I did some digging, and it turned out this was related to my recently enabling a free trial of Avast Internet Security; previously I'd just been using Avast Free Antivirus but it offered me a free 21 day trial of their Internet Security product. It's apparently a known issue that their Firewall and other network "features" cause DPC latency. Which is a real shame because their free product is great. So I ended the trial, rebooted, and let it finish uninstalling itself.

    Then I fired up DPC Latency checker, played some 24/192 audio, and re-launched 64-bit Chrome with my usual dozens of tabs. Everything's great, it very rarely gets above 500μs and always stays below 1000.

    Thanks so much for the OP niemero, very helpful. Please consider updating it to reflect the new command for invoking Windows Performance Analyzer, which is now "wpa trace.etl". And detailing the correct location of the DPC graph in the new layout. The OP got me there, I just had to do some research to find the updated information. Much appreciated!
    maronapossessed says thanks for this.

  5. #65

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    I got this parameter error while im on step 2 part 2 on CMD How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)-2015-07-29_1-48-50-png On the last command code: xperf %userprofile%\Desktop\trace.etl

  6. #66

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Please help!! XD

  7. #67
    xilolee's Avatar
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    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Hi louiezky!
    This should work for Windows 8/8.1 users--> C:\Users\Admin\Desktop>xperf %userprofile%\Desktop\trace.etl Error wrong Parameter (click)

  8. #68

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Quote Originally Posted by cylon7 View Post
    I figured it out. It seems Windows Performance Analyzer has moved things around a bit since this OP was written. The graph is called DPC/ISR: DPC/ISR Duration by Module/Function. It's a main graph with an expansion arrow to its left. I right-clicked on it and selected Add Graph to Analysis View. That gave me a chart that listed ndis.sys, tcip.sys and netio.sys as the culprits. I am using the latest driver available from the manufacturer for my Qualcomm Atheros 8151 NIC.

    I did some digging, and it turned out this was related to my recently enabling a free trial of Avast Internet Security; previously I'd just been using Avast Free Antivirus but it offered me a free 21 day trial of their Internet Security product. It's apparently a known issue that their Firewall and other network "features" cause DPC latency. Which is a real shame because their free product is great. So I ended the trial, rebooted, and let it finish uninstalling itself.

    Then I fired up DPC Latency checker, played some 24/192 audio, and re-launched 64-bit Chrome with my usual dozens of tabs. Everything's great, it very rarely gets above 500μs and always stays below 1000.

    Thanks so much for the OP niemero, very helpful. Please consider updating it to reflect the new command for invoking Windows Performance Analyzer, which is now "wpa trace.etl". And detailing the correct location of the DPC graph in the new layout. The OP got me there, I just had to do some research to find the updated information. Much appreciated!
    I disabled the firewall without restarting and that fixed it! I have tried everything and I'm so glad I found this thread. I even wasted money on an intel network driver...well that's two network drivers lmao!

    GODSPEED TO YOU! FINAL-FREAKINGLY I SOLVED IT!!!!
    jcgriff2 says thanks for this.

  9. #69
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    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Quote Originally Posted by maronapossessed View Post

    I even wasted money on an intel network driver...well that's two network drivers lmao!
    What??

    You were charged $$ for an Intel networking driver? By whom?

    Intel drivers are free of charge - directly from Intel - https://downloadcenter.intel.com/

  10. #70

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Quote Originally Posted by jcgriff2 View Post
    Quote Originally Posted by maronapossessed View Post

    I even wasted money on an intel network driver...well that's two network drivers lmao!
    What??

    You were charged $$ for an Intel networking driver? By whom?

    Intel drivers are free of charge - directly from Intel - https://downloadcenter.intel.com/
    I meant the device lol
    jcgriff2 says thanks for this.

  11. #71

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    CMD Prompt- use WPA instead

    WPA %userprofile%\Desktop\trace.etl

    if you get error
    parameter is incorrect 0x80070057
    running xperf %userprofile%\Desktop\trace.etl
    xperf: error: C:\Users\Admin\Desktop\trace.etl: The parameter is incorrect. (0x80070057). run

    WPA %userprofile%\Desktop\trace.etl

  12. #72

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    After following this tutorial and running Windows Performance Analyser it shows 31 modules where only two are black and the rest are marked as red. One of them shows a duration at 415.... ms, second one at 363... ms, and the rest are from 152 down to 0.000446 ms.
    Does it mean that those drivers with a high duration are the cause of possible slowness during the operation on my laptop?

  13. #73

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)-pc-lag-pngWhen I try this, all the values are at the max.. Anything I'm doing wrong or is my pc like a century behind?

  14. #74

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Hi I found this forum from a google search. Im experiencing high latency all USB related. Ran latencymon first and while I must say I get same results in kernel latency on two different rigs one Intel and one AMD it does show main culrpit as usbport.sys, thing is I have all drivers updated as well as AMD chipset drivers to latest ones same goes for the intel rig. But what worries me is not the kernel latency in latencymon, its the indepth latency test specifically at dispatch level which is showing on CPU core 0 over 100 us which is a problem and it turns red. Making gaming unplayable with stuttering and high VAR in source engine based games. I disabled legacy usb in bios and am using the usb 3.0 ports and still same thing only latencymon or xperf no longer shows usbport.sys which are 1.1 and 2.0 driver, its showing etron XHCI.sys as the main culprit and go figure etron makes the USB 3.0 controller on this board. I do not understand I have been using this board for almost 2 year its an Asrock Fatality Killer 990FX I have tried multiple bios and newest still samething. RMAed the board to them and they claim its either my end or an AMD problem. But I think they just dont want to do their job and pointing the finger. Any ideas? This problem started happenig after I rebuilt rig after a suspected hardware infection, only new parts are video and mouse, video is an XFX R9 280 and mouse a Razer Deathadder Chroma. Thing is I swapped both with still same issue. Any ideas? Been pulling my hair out for over a month here

    NOTE: Also storport.sys is giving a high ISR count as well. Not worried about a few others that give low numbers, main concern are USB and storport

    Yes all drivers are updated

  15. #75

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Ok I found the real driver that causes this, not indicated by perf or latencymon.

    Its the amd cat video drivers for Win 10 I think.

    If I uninstall driver and use basic MS display driver the latency tests pass. Now this is either a Win 10 driver issue with AMD cards and I tried every driver from 15.7 to 15.11 same thing. Reverting to 8.1 now and trying 15.6, if it still happens Im going to assume either defective video OR insufficient power, PSU is capable but I dont have an 8 pin connector and this uses 6 pin and 8 pin, using an adapter from 6 to 8 and never had a problem in the past but I dunno.

    Installing 8.1 now and maybe contact XFX tomorrow

  16. #76

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Bleh it just happens less without amd drivers. This is driving me nuts, no matter what drivers I use this happens. I swapped every part of hardware except mobo, just RMAed it still same thing. Either idiot tech from mobo company sent me same exact board cause he claims its an "AMD" problem or this is some sort of hardware infection.

    Let me try and post a screenie of drivers section causing thisHow to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)-latencymonscreen-jpg

  17. #77

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    I have a Toshiba Satellite C650D Laptop with Windows 7.

    I followed this tutorial as best I could and it didn't resolve my issue. Here's what I did:

    1. Ran Command Prompt as Administrator.
    2. Typed in the following commands.

    xperf -on DiagEasy
    xperf -d %userprofile%\Desktop\trace.etl
    WPA %userprofile%\Desktop\trace.etl

    Note: I had to use WPA in the last command prompt because xperf didn't work and that seemed to be the fix I saw in the thread.

    Here's where it started to deviate a little for me and I had to make some approximations because the graphs that showed up for me didn't match up exactly with the tutorial. I have something called "Graph Explorer" on the left side of WPA and they are separated into categories.

    System Activity
    Computation
    Storage
    Memory

    and some of these categories had further categories. I clicked on Computation and there were 3 more categories.

    CPU Usage (Precise) - Utilization by Process, Thread
    DPC/ISR - Duration by Module, Function
    CPU Usage (Attributed) - Utilization by Process, Thread, Activity

    I checked under DPC/ISR - Duration by Module, Function since that seemed to be what was needed and there were multiple graphs. I'm stuck here because I'm not sure which one to use and there is no exact graph called DPC CPU Usage.

  18. #78
    xilolee's Avatar
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    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Hi Amrit.
    It is usually better to open a new thread/topic in the correct forum section, instead to post inside a guide.
    A post in a guide could/should be to thank for the guide or to add something interesting to the guide or to update it.
    Hence I suggest you to open your own topic in the windows 7 subforum or in the BSOD, Crashes, Kernel Debugging one.


  19. #79

    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Hello, I have recently been running into some issues while doing any kind of recording/capturing with my laptop. After some poking around online, I came across this quick guide, but in step II after the CMD "Xperf -On DiagEasy" I type in the next sets of commands and get these errors:

    C:\Windows\system32>xperf -d %userprofile%\desktop\trace.etl
    xperf: error: -d: does not expect 2 argument(s).
    Trace Stop options:


    xperf [-stop [LoggerNames]|[ProfileFileName!ProfileName|SessionName merged.e
    tl]]|[-cancel ProfileFileName!ProfileName|SessionName [NoDelete]] [-d merged.etl
    ] [-heap]


    -stop LoggerNames|ProfileFileName!ProfileName|SessionName merged.e
    tl Turn off loggers specified in LoggerNames.
    Or Turns off loggers in profile ProfileName


    defined in file ProfileFileName and merge
    the ETL files to merged.etl. Or Turns off
    logger SessionName defined in file
    ProfileFileName and merge the ETL file to
    merged.etl.
    -d merged.etl Merge the ETL files of stopped logging
    sessions into merged.etl; if no session is


    stopped explicitly, the "NT Kernel Logger"


    is stopped implicitly.
    -BootTrace off Turn off boot trace
    -heap Stop heap tracing
    -cancel ProfileFileName!ProfileName|SessionName [NoDelete] Turn off
    loggers in profile ProfileName
    defined in file ProfileFileName and delete


    the trace files. Or Turns off logger
    SessionName defined in file ProfileFileName


    and merge the ETL file to merged.etl. If
    NoDelete is specified than trace files are


    not deleted


    If LoggerNames are not given, or -d is specified without -stop present, the


    kernel logger will be stopped.


    C:\Windows\system32>xperf %userprofile%\desktop\trace.etl
    xperf: error: C:\Users\Lucklss: The parameter is incorrect. (0x80070057).


    Microsoft (R) Windows (R) Performance Analyzer Version 6.3.9600
    Performance Analyzer Command Line
    Copyright (c) 2013 Microsoft Corporation. All rights reserved.


    Usage: xperf options ...


    xperf -help start for logger start options
    xperf -help providers for known tracing flags
    xperf -help stackwalk for stack walking options
    xperf -help stop for logger stop options
    xperf -help merge for merge multiple trace files
    xperf -help processing for trace processing options
    xperf -help symbols for symbol decoding configuration
    xperf -help query for query options
    xperf -help mark for mark and mark-flush
    xperf -help format for time and timespan formats on the comman
    d line
    xperf -help profiles for profile options

  20. #80
    xilolee's Avatar
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    Re: How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8)

    Hi Luckless Zombie.
    Re-try with the following one (always from an elevated command prompt):
    Code:
    xperf -d "%userprofile%\Desktop\trace.etl"

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