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z420 - ACPI.sys high interrupts (one Core 100% usage) RRS feed

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    Hello,

    using Windows 8 on a HP z420 with GTX680 GFX. One Core of my Machine is constantly 100% in use by interrupts.

    With the help of Windows Performance Analyser I was able to identify which Process filles up one of my CPU Cores with 100% of interrupt handling.
    It's the ACPI.sys - but now I don't know how to investigate further and find our why ACPI.sys is eating up one Core of my System ...

    Maybe someone here can help me on this? (And what Information do you need for helping me out here?)

    Thank you, bye from snowy Austria
    Andreas Schnederle-Wagner

    Saturday, February 2, 2013 1:21 PM

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    still the same. Do you also have the issue without using the RAID?

    "A programmer is just a tool which converts caffeine into code"

    • Marked as answer by Hellkeeper1 Monday, February 4, 2013 8:05 PM
    Monday, February 4, 2013 5:21 AM
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    please upload the ETL file, so that I can take a look at it.

    "A programmer is just a tool which converts caffeine into code"

    Saturday, February 2, 2013 3:29 PM
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    Hi,

    first let me say thanks you take your time to help me! ;-)
    Uploaded the ETL here: www.partynet.at/files/DPC_Interrupt.zip

    Andreas

    Saturday, February 2, 2013 4:19 PM
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    Looks like ACPI.sys!OSNotifyDeviceWake is the cause. Disable powersaving for the devices in device manager.

    "A programmer is just a tool which converts caffeine into code"

    Saturday, February 2, 2013 8:56 PM
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    Looks like ACPI.sys!OSNotifyDeviceWake is the cause. Disable powersaving for the devices in device manager.

    "A programmer is just a tool which converts caffeine into code"


    which device would that be? Can't find any named like this?
    Sunday, February 3, 2013 1:06 AM
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    I can see which device is the issue. Try it with your LAN/WLAN, HDD maybe this helps.

    "A programmer is just a tool which converts caffeine into code"

    Sunday, February 3, 2013 6:38 AM
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    I can see which device is the issue. Try it with your LAN/WLAN, HDD maybe this helps.

    "A programmer is just a tool which converts caffeine into code"

    well - I deactivated powersaving capabilities on EVERY device which let me deactivate it in device Manager. Didn't change anything! :-/
    Unfortunately it didn't showed me any powersaving tab on my SSD (Samsung 840 PRO) nor on my RAID1 which consists of 2 Seagate Barracuda.

    Sunday, February 3, 2013 12:06 PM
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    make a new xperf trace.

    "A programmer is just a tool which converts caffeine into code"

    Sunday, February 3, 2013 8:06 PM
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    new trace: www.partynet.at/files/DPC_Interrupt2.zip
    Monday, February 4, 2013 12:04 AM
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    still the same. Do you also have the issue without using the RAID?

    "A programmer is just a tool which converts caffeine into code"

    • Marked as answer by Hellkeeper1 Monday, February 4, 2013 8:05 PM
    Monday, February 4, 2013 5:21 AM
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    Seems like you are perfectly right!

    Just unplugged both Barracudas - and CPU usage while idle dropped to zero ... :)

    This means the Intel Matrix Storage Manager is the cause of this problem?!? (unfortunately i have already installed the latest Version)

    Monday, February 4, 2013 7:59 PM
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    weird - after I plugged the HDDs in again and fired up the PC the Problem is gone - without any driver Change?!?

    Does this make sense??

    Andreas

    Monday, February 4, 2013 8:06 PM
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    I have no idea.

    "A programmer is just a tool which converts caffeine into code"

    Monday, February 4, 2013 8:14 PM
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    really weird ... hehe ... hope it stays like this now! ;-)

    Thank you very much for your help!!!

    Andreas

    Monday, February 4, 2013 10:29 PM
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    Thank you very much for your help!!!

    You're welcome :)

    "A programmer is just a tool which converts caffeine into code"

    Tuesday, February 5, 2013 7:29 PM
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    I have the exact same issue....BUT....now its the opposite.

    Before, I noticed that 1 cpu core was active when a disc was in the optical drive of my Samsung Series 7 laptop...when i removed the disc...cpu usage was gone....

    I just re-installed win 8, fresh and clean...newest drivers and such...and now its the opposite!!  The ACPI.sys hogs core 1 when no disc is inserted, but as soon as I put one in...cpu usage is gone....what is going on here?  

    Thursday, July 11, 2013 6:20 AM
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    run 2 xperf tarces (1 where you have the issue and 1 when not).

    Install the WPT (http://social.technet.microsoft.com/wiki/contents/articles/4847.install-the-windows-performance-toolkit-wpt-en-us.aspx), open a CMD prompt with admin rights and type this:

    xperf -on latency -stackwalk profile -buffersize 1024 -MaxFile 256 -FileMode Circular && timeout -1 && xperf -d HighCPUUsage.etl



    after you captured 30s of the high CPU, go back to CMD prompt and press a key to stop the logging. Now compress the HighCPUUSage.etl as 7z (LZMA2, ULTRA) to reduce the size.

    Run it the second time when the issue is gone and replace HighCPUUsage.etl with a different name.

    Upload the files to your SkyDrive or Dropbox and post a link here.

    "A programmer is just a tool which converts caffeine into code"

    Thursday, July 11, 2013 7:06 PM
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