DPC Latency Tool For Windows 8 ?

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Norrie
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2013/05/06 14:25:37 (permalink)

DPC Latency Tool For Windows 8 ?

Hi all.
 
What are you using to check the DPC Latency in Windows 8 ?
 
I hear DPC Latency Checker has issueswith windows 8....
 
Are you all using LatencyMon or is there other programs out there that are worth a look ?
 
Norrie

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    arachnaut
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    Re:DPC Latency Tool For Windows 8 ? 2013/05/06 14:38:22 (permalink)
    I've heard the same thing about DPC latency checker, but don't know the issue.

    LatencyMon is what I use.

    Mainly I use it when there is a new video driver install because I once had problems between firewire and video due to some driver.


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    arachnaut
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    Re:DPC Latency Tool For Windows 8 ? 2013/05/06 14:53:16 (permalink)
    According to this:

    http://www.thesycon.de/eng/latency_check.shtml

    "Windows 8 Compatibility - The DPC latency utility runs on Windows 8 but does not show correct values. The output suggests that the Windows 8 kernel performs badly and introduces a constant latency of one millisecond which is not the case in practice. DPCs in the Windows 8 kernel behave identical to Windows 7. The utility produces incorrect results because the implementation of kernel timers has changed in Windows 8 which causes a side effect with the measuring algorithm used by the utility. Thesycon is working on a new version of the DPC latency utility and will make it available on this site as soon as it is finished."

    - Jim Hurley -
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    kristoffer
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    Re:DPC Latency Tool For Windows 8 ? 2013/05/06 15:46:45 (permalink)
    When I had win8 installed, the DPC latency checker had aprox. 1000us constant latency. Which would not be correct :) 

    Latency Mon works fine in win8, and also shows you the potential issue (driver, process, program)

    I had so large issues with my FW driver and Nvidia driver in Win8 that I had to go back to win7 :(


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    Jazzy20
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    Re:DPC Latency Tool For Windows 8 ? 2013/05/06 16:37:09 (permalink)
    Resplendence has a pretty good one that is much more detailed than dcplat.

    It is compatible with Windows 8 and shows which driver produces the largest latency.

    http://www.resplendence.com/latencymon


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    arachnaut
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    Re:DPC Latency Tool For Windows 8 ? 2013/05/06 20:27:50 (permalink)
    kristoffer


    When I had win8 installed, the DPC latency checker had aprox. 1000us constant latency. Which would not be correct :) 

    Latency Mon works fine in win8, and also shows you the potential issue (driver, process, program)

    I had so large issues with my FW driver and Nvidia driver in Win8 that I had to go back to win7 :(

    I had exactly that issue - firewire+Nvidia.


    You can try some earlier releases and find the one that works best. No need to revert to Win7.



    - Jim Hurley -
    SONAR Platinum - x64  - Windows 10 Pro 
    ASUS P8P67 PRO Rev 3.0;  Core i7-2600K@4.4GHz; 16 GB G.SKILL Ripjaws X;
    GeForce GT 740; Saffire Pro14 MixControl 3.7; Axiom 61
    64-Bit audio, SR: 48kHz, ASIO 256 samples latency, Rec/Play I/O Buffers 512k, Total Round Trip Latency 13 ms, Pow-r 3 dither 
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