svchost.exe hogging CPU

Discussion in 'Windows Vista Performance' started by pcbilski, Nov 21, 2008.

  1. pcbilski

    pcbilski Guest

    I have this strange problem where i can hear my hard drive
    reading/writing every second, then stopping, then starting again
    When i look at the process list i see svchost.exe is using between 10
    and 30% CPU which i do not think is normal.
    Can anyone help?
    Vista Ultimate 64 SP2 v. 113 (problem did not start with evaluation SP)
    pcbilski, Nov 21, 2008
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  2. pcbilski

    MilesAhead Guest

    You might want to get Process Monitor freeware from SysInternals. If
    fact there should be a SysInternalsSuite for download on most freeware
    sites and on the MS hosted home page. svchost.exe launches other
    services so to see what is hogging what resource you have to see what it
    is loading or doing etc..

    I have 32 bit Vista Home Premium on an HP PC that I bought in April
    2007 and I'm still turning stuff off!!! It's just about at the level
    now where the drive only runs on for a few minutes right after I create
    a restore point. But it used to just go on by itself for 20 minutes on
    end!! Turned a bunch of services off including Windows Indexing and
    also you have to hunt down hidden scheduled tasks to see what other
    stuff you don't use but the system wants to run anyway is scheduled to
    MilesAhead, Nov 21, 2008
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  3. pcbilski

    pcbilski Guest

    Thanks for the tips, the weird thing is this just started recently,
    indexing is off, as well as automatic defrag. will check out that tool
    from sysinternals, but im thinking about just re-loading soon anyway.

    Thinking about going to 32 bit version, as apparently uses less ram,
    only have 2 gigs currently and ddr3 is so expensive.
    Can anyone confirm the ram remark?
    pcbilski, Nov 21, 2008
  4. pcbilski

    MilesAhead Guest

    I'd google generally and see what you get but it does seem weird tha
    the activity wasn't there from the beginning. Do you have Windows ho
    fixes/updates or whatever they call 'em enabled? Me, I like to put on
    fix only if I'm convinced it will help me. I follow the "if it ain'
    broke don't fix it" philosophy. Seems I recall someone else mentionin
    WmiPrv so if you google you may get some hits

    On the 32 bit Vista I'm not sure about the ram usage but one advantag
    of running 32 bit is you can use Sandboxie rather than resident shiel
    type antivirus. Instead of trying to figure out which software is goo
    and which is evil it takes the simpler approach of redirecting dis
    writes of "Sandboxed" programs to a folder.. making it very difficul
    for malicious software to do stuff like delete your partition. Th
    developer won't support 64 bit due to changes in 64 bit Windows tha
    won't allow kernel modification or whatever that Sandboxie relies on.
    Once you get this problem out of the way you might want to check it out

    I think Vista is going to have a tough time reaching critical mas
    unless they get away from this syndrome of the system elbowing the use
    out of the way to use the hard drive!! It's cart before the horse. :
    MilesAhead, Nov 21, 2008
  5. pcbilski

    Kerry Brown Guest

    In the Task Manager right click on the svchost instance and pick Go to
    service(s). This will open the Services tab with all the services that are
    in that svchost instance highlighted with light blue. Next go to the
    Reliability and Performance Monitor. Expand the Disk section and watch it
    for a while noting the PIDs for the tasks using the disk the most. Go back
    to Task manager and find the PIDs. You may have to check the services again.
    It may take a while of going back and forth watching what is happening but
    you should be able to determine what is using the disk and what it is doing
    fairly quickly. Vista using the disk in the background isn't really a
    problem. If you look at the IO Priority in the Reliability and Performance
    Monitor a lot of the tasks are set to run in the background. They don't
    really impact performance at this priority. For the CPU at 10-30% all the
    time, that is not normal and would be what I would be looking at.
    Kerry Brown, Nov 22, 2008
  6. pcbilski

    Kerry Brown Guest

    Turning off some of the background tasks may negatively impact your
    performance in the long term. Vista does a lot of housekeeping with tasks
    running at a low priority. This doesn't really impact foreground
    performance. Not letting Vista do the housekeeping may degrade performance
    over time. Doing the housekeeping manually means you waste time doing this
    when you could be using the computer for something else. Many people don't
    have the skills needed to tune up the computer manually. Note that there are
    always exceptions to the rule but for the vast majority of Vista users they
    are better off letting Vista do what it wants in the background. It's
    similar to tuning a car. Very fast custom tuned cars are hard to keep in
    tune and the tuning takes up as much time or more as actually driving the
    car. For some people that little bit of time driving really fast is worth
    the effort. The vast majority would rather have a reliable car that gets
    them to work and back.
    Kerry Brown, Nov 22, 2008
  7. pcbilski

    Zyonix Guest

    Well, oddly, in WinXP, svchost mainly hogged all of the CPU when
    checking for updates. This issue was "kind-of" resolved with SP3, but I
    can't promise anything for Vista, but it's worth a shot... temporarily

    Turn off Automatic Updates if you haven't already, and maybe just check
    for updates every now and then before you fall asleep. Seemed to work
    for me for the longest time, but like I said... that wasn't Windows
    Zyonix, Nov 28, 2008
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