CPU usage 100%

Discussion in 'Windows Vista Performance' started by ChrisJ, Jan 25, 2007.

  1. ChrisJ

    ChrisJ Guest

    I checked my indexing and it says 507 items and completed. I checked my task
    manager and it shows my CPU usage as 90% or greater, average is 93% but
    generally hits 100%.

    I've done adware searching and had 102 items and removed them. still no help

    I've turned off unneeded services like auto updates with no help against my
    CPU usage.

    I've indiscriminately combed through my task manager processes and nothing
    hits the amount of usage that would raise an eye brow as to being the culprit.

    is this a common thing? any help would be great. maybe there's something I'm
    missing or haven't thought of.
    ChrisJ, Jan 25, 2007
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  2. Chris

    In Windows XP I would recommend Process Explorer. I have not used it
    in Vista but the latest version is available for use with Vista.

    For further information about Process Explorer see here:

    To ascertain which service is causing the problem select the process
    producing the high CPU usage, right click, select Properties,
    Services. Note there are the full names and
    some explanation of what each service does.

    You will find further information on Services here:

    To trace the particular Service involved you need to turn off each
    service in turn and then restore it noting what effect it has on CPU
    usage. However, you need to take care and watch what other Services
    are dependent on that service. When you click on the Dependencies tab
    allow it a little time to display the information.


    Hope this helps.

    Stourport, England
    Enquire, plan and execute
    Gerry Cornell, Jan 26, 2007
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  3. ChrisJ

    ChrisJ Guest

    that will end the entire war then Gerry.

    1,000,000 thanks
    Chris J
    ChrisJ, Jan 26, 2007
  4. Chris

    You've gone off on a tangent. The idea was to identify the particular
    process generating the high CPU usage. Do this and tell us the Command
    Line of the Process. If you right click on the Process and select
    Services it will name the Services using the Process.

    You may need to Add Columns. To do this select View, Select Columns.
    Try checking Process, PID, Company Name, Version, Window Status, and
    Command Line.


    Hope this helps.

    Stourport, England
    Enquire, plan and execute
    Gerry Cornell, Jan 26, 2007
  5. Chris Altmann, Jan 26, 2007
  6. ChrisJ

    ChrisJ Guest

    OK Gerry I think I made some progress. this issue I'm having falls under the
    system idle process/hardware interrupts tree. there was no 'services on
    right-mouseclick menu.

    It must be generic as it has no company name listed under company name. this
    freaks me out. it is using average 85-95% CPU usage. I'm serious and this is
    no tangent.

    now, I've checked all my hardware for conflicts, nothing.
    ChrisJ, Jan 26, 2007
  7. ChrisJ

    ChrisJ Guest

    Ok Gerry, forgot to mention, I'm using Vista Business
    on my Compaq system
    ChrisJ, Jan 26, 2007
  8. Chris A

    I am well aware that this can be driver issue but we need to know the
    process first. At least that is the way I see it.


    Stourport, England
    Enquire, plan and execute
    Gerry Cornell, Jan 26, 2007
  9. Chris

    If System Idle is running constantly at approaching 100% you have no
    problem. System Idle is 100% less the sum of all the running
    processes. Thus if System Idle is 95% your processes are only using 5%
    of capacity.


    Hope this helps.

    Stourport, England
    Enquire, plan and execute
    Gerry Cornell, Jan 26, 2007
  10. ChrisJ

    Open the Task Manager and click the "Show processes from all users" button
    at the bottom of that dialog. Look in the list and see which process, in the
    Image Name column, is using the 90+ in the CPU column.


    Ronnie Vernon
    Microsoft MVP
    Windows Shell/User
    Ronnie Vernon MVP, Jan 26, 2007
  11. ChrisJ

    ChrisJ Guest

    OK Ronnie, I checked. it appears that the SYSTEM(kernel) and SYSTEM IDLE
    Process are tag teaming the CPU time the most. sometimes SYS IDLE is 40% and
    SYSTEM 20% but both are rocking.

    But something Else I found out;
    I have 13 svchost.exe running at the same time.
    6 running on SYSTEM
    3 running NETWORK
    4 running LOCAL
    Why so many? I've never had so many svchost.exe files running at one time.
    could this be the problem?
    ChrisJ, Jan 27, 2007
  12. The System 20% might be problematic, if this is constant, you might want to
    employ the Process Explorer (which has already been discussed here) to track
    down what is using this process.

    The System Idle Process is not a problem since this simply shows how much of
    the CPU resources are idle and available for programs to use. In other words
    this process shows how much of the CPU resources are NOT being used.

    The svchost processes are normal. This is the Service Host module and it
    enables all of the many Vista Services to run. In Process Explorer, look on
    the left side module tree for svchost.exe. Hover the mouse over each
    instance of svchost.exe and an information box will pop up showing which
    services each instance is hosting.

    To sum things up, you appear to be running fairly well, except for the 20%
    CPU, System process. (If this is running consistently, like I mentioned

    You might also want to refer to the following article on Vista Services.

    Services in Windows Vista


    Ronnie Vernon
    Microsoft MVP
    Windows Shell/User
    Ronnie Vernon MVP, Jan 27, 2007
  13. ChrisJ

    ChrisJ Guest

    Then I offer this probability. My Graphiccard driver. they are ATI "Beta"
    RTM drivers.

    I've heard of folks here who have issues with their graphiccards.

    I called Compaq, my system maker and they told me that for $65 i can get 6
    motnhs support to include drivers for my system.

    hmm sounds like a fishy thing to me. I'm still under warranty and they can
    just as well post the drivers on their website for me to download.

    thanks Ron

    I'll let you know what happens here when drivers for my PC are released.
    ChrisJ, Jan 27, 2007
  14. That's a good possibility.

    You might want to test this by turning off all the advanced graphic features
    just to see if the System load is reduced.


    Ronnie Vernon
    Microsoft MVP
    Windows Shell/User
    Ronnie Vernon MVP, Jan 27, 2007
  15. ChrisJ

    ChrisJ Guest

    Here's something Ronnie, looked at my physical memory

    kernel memory

    CPU usage90%
    CPU usage history is way up at the top

    this advanced graphics you mention, are you reffering to the bells and
    whistles? like Aero glass interface?
    ChrisJ, Jan 27, 2007
  16. ChrisJ

    ChrisJ Guest

    As well, I checked my wifes, XP system and she has a system idle of 99%

    CPU usage is average 2% during a 15 second time

    My Vista Business system is

    all over the place but average SYSTEM:bounces from 8% to 21% for a 15 sec test
    System Idle:bounces as well, 58, 78 84%

    this is strange because my mouse lags(stops shortly then moves) and web
    browser takes awhile to load. FireFox 2.0

    My wifes Kernel is calm and casual mine is a freakin' crack addict.
    ChrisJ, Jan 27, 2007
  17. Chris

    Like I said, try turning off the graphic features. Open Control
    Panel/Performance Information and Features. On the left menu, click Advanced
    Tools and then "Adjust the appearance and Performance of Windows."

    Select the "Adjust for best performance" radio button. Apply/OK. Check to
    see if this makes a difference in the CPU load.

    Some other things you can check are the installed anti-virus program to see
    how often it is set to scan. Also, what programs are running in the
    background and what programs are set to start at boot time.

    Go to Start/Run and type msconfig and click OK. Select the Start Up Tab
    to see a list of these programs.

    You haven't mentioned exactly what it is your trying to track down here? Are
    you having problems running programs or games or???

    If so, give us a brief over view of your system like CPU speed, installed
    RAM, Graphics memory, etc.


    Ronnie Vernon
    Microsoft MVP
    Windows Shell/User
    Ronnie Vernon MVP, Jan 27, 2007
  18. ChrisJ

    Adam W Guest

    Chris, what is your CPU speed speed and how many mb's on RAM do you have? The
    CPU that you have could be the problem.
    Adam W, Feb 1, 2007
  19. Hi,

    I'm running the 32bit Vista Business edition and also experiencing similar
    issues. My CPU doesn't constantly run at 100% though it can run like that for
    quite some time (sometimes up to 20 minutes) before settling again. After
    installing Process Explorer I've discovered that 3 .exe's are periodically
    becoming unstable and start behaving erratically.

    The processes are as follows:


    My system, nothing OC'd (If it helps)

    AMD64 3500+(skt939)
    DFI Infinity NF4 SLI
    2x512 Corsair XMS DDR400
    256MB Asus 7600GT
    Creative Audigy SE
    250GB Maxtor SataII HDD
    Carl Candlish, Feb 2, 2007
  20. And I'm experiencing it too. But its only in some cases it appears.

    If I start the fileexplorer on the quickstart, that opens in "My Documents"
    folder, it does not use any CPU resources.

    BUT if I hit [Winkey] + [E] the explorer opens up, with the focus on
    "Computer". And then it hogs the CPU untill I shut down the explorer, OR
    untill I dive down into the file system somewhere. Then it no longer uses any
    noticeable CPU cycles. If I browse back to the "computer" it does not resume
    hogging my precious cpu cycles.

    It doesnt matter if I'm running classic file explorer settings, or If im
    using "run explorer in a separate process" or not. Turning off the Desktop
    management service also has no influence on the issue.

    This smells like a bug doesnt it?

    I'm running Vista Ultimate on a HP NC8430 laptop with a 2.0 Ghz Core2duo and
    2 GB RAM. System has a Vista rating of 4.2.

    And it's pretty much a vanilla install of Vista.
    Lars W. Andersen, Feb 17, 2007
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