System Interrupts Huge CPU Usage

Anonymous
2009-11-18T12:06:50+00:00

Hi,

I have just recently installed Windows 7 Professional on my machine and I am having a problem with a process called System Interrupts using alot (25% approximately) of CPU.

I have tried several supposed fixes i have found here and on other forums but have not solved the issue.

I am at wits end.

http://i289.photobucket.com/albums/ll203/SK-illfull/systeminterrupts.jpg

Mobo: Gigabyte GA-EP35-DS3

Video Card: Nvidea 8800 GTX

Windows for home | Previous Windows versions | Windows update

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Anonymous
2012-02-23T09:40:40+00:00

My computer got so slow that the mouse was slow and jerky and I had to reboot. System interrupts was at about 30% CPU time. My PC is now with 5 days uptime and the bug seems to have disappeared. The following solution seems to solve the issue :

  1. Right-click on the speaker icon
  2. Select playback devices
  3. Click on the speaker properties
  4. Go to the enhancements Tab
  5. Click Disable All Sound Effects
  6. Click OK. You're done!

The sound enhancements seem for some reason to cause the problem even when not used. So disable them following the procedure above. Good luck!

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  1. Anonymous
    2010-01-29T22:44:12+00:00

    Well my system interrupts are spiking my CPU at 30 everynow and again.. and I imagine that a perfectly working laptop is not meant to be doing this, as in I really would rather not have and system interrupts.

    Ive just being browsing the internet and listening to much for the last half hour, and my system interrupts average CPU is 10.2.. I dont think this is good.

    Any help?

    Many thanks.

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  2. Anonymous
    2010-01-28T13:46:01+00:00

    Hi Mcoz,

    your Interrupt usage is low. You should not worry about it. The people here mostly have 30-40% CPU usage caused of Interrupts/DPC which really slows down the PC.

    Do you have any issues or performance gaps caused by the Interrupts/DPC?

    André

    "A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

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  3. Anonymous
    2010-01-28T13:34:38+00:00

    It seems not this is another one I took there recently when all I was doing is browsing internet and listening to an mp3.

    http://rs179l33.rapidshare.com/files/342393469/dxkrnl2.jpg (sorry forget the file name here I got mixed up) this  is showing USBport topping the list again.

    However I have noticed that my cpu is spiking every few mins.. and its the system interrupts again, in the resource monitor when the CPU spikes system interrupts go up to 28 - 30.

    You can see it in this pic.

    http://rs111gc.rapidshare.com/files/342393351/cpu\_spike.jpg

    I then did a xperf on it an found this.. though it reports it only 4 to 5 percent CPU usage when it spikes even though the spikes in the resource monitor definitely are caused by the system interrupt thing jumping upto 30.

    http://rs672tl.rapidshare.com/files/342394765/dxkrnl3.jpg

    So when I did a search for this on the net, I found someone mentioning something about graphics card being on the same irq as a usb thing so I went and cheked mine and this is what I found.

    http://rs419l33.rapidshare.com/files/342386389/shared.jpg

    You think this might be anything?

    Many thanks again.

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  4. Anonymous
    2010-01-28T13:17:48+00:00

    @Mcoz Does the high CPU usage only occurs when you copy data to your USB drive?

    "A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

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