Resolved Finder 100% CPU

Discussion in 'OS X Mountain Lion (10.8)' started by Rossagues, Aug 20, 2012.

  1. Rossagues, Aug 20, 2012
    Last edited: Sep 8, 2012

    Rossagues macrumors regular

    Rossagues

    Joined:
    Aug 12, 2012
    Location:
    Manchester, England
    #1
    My MacBook Pro has been getting very hot recently for no reason.

    When I open up finder it goes to close to 99% CPU just by using it and doing nothing within Finder. This is mainly the case when I open files with a lot inside of them. But this should not happen right?

    [​IMG]

    Just this alone is making my CPU nearly 100 Degrees alone:

    [​IMG]

    My MacBook Pro is a late 2009 model with a 2.8 GHz Intel Core 2 Duo processor. And 8GB 1067 Mhz DDR3 memory.

    Is this normal or not?

    Thanks,

    Ross
     
  2. stridemat Moderator

    stridemat

    Staff Member

    Joined:
    Apr 2, 2008
    Location:
    UK
    #2
    Does the finder icon (the magnifying glass) in the top left have a little dot in the centre? If so, Finder is indexing which is quite processor intensive. Let it run and it should calm down after its complete.
     
  3. Rossagues thread starter macrumors regular

    Rossagues

    Joined:
    Aug 12, 2012
    Location:
    Manchester, England
    #3
    No it didn't it just shot up to 101.4% on my Activity Monitor.
     
  4. stridemat Moderator

    stridemat

    Staff Member

    Joined:
    Apr 2, 2008
    Location:
    UK
  5. Rossagues thread starter macrumors regular

    Rossagues

    Joined:
    Aug 12, 2012
    Location:
    Manchester, England
    #5
    Thats seemed to have calmed it down. Thanks. This Mac is so weird sometimes!

    May i ask, what is the average temperate degree a CPU should be?
     
  6. stridemat Moderator

    stridemat

    Staff Member

    Joined:
    Apr 2, 2008
    Location:
    UK
    #6
    It depends on the type of processor and the machine it's in. Each type of mac will have different thresholds.
     
  7. Icy1007 macrumors 6502a

    Icy1007

    Joined:
    Feb 26, 2011
    Location:
    Cleveland, OH
    #7
    It also depends on the environment you're operating the computer in.
     
  8. stridemat Moderator

    stridemat

    Staff Member

    Joined:
    Apr 2, 2008
    Location:
    UK
    #8
    For example mine is:

    Screen Shot 2012-08-21 at 07.04.07.png
     
  9. lukemcurley Guest

    #9
    I am having the same issue with Mountain Lion at random times. Just from browsing files within folders and using Icon view. CPU will spike at 70-100% just for the Finder process. When I close the folder, CPU usage drops back down again.

    Restarting Finder normally fixes it, but it happens again at random. Very odd behaviour from ML. Causes my MacBook Air to get hot and fan start-up.

    2010 MacBook Air - 1.8 GHz Core 2 Duo with 4GB RAM.
     
  10. Rossagues thread starter macrumors regular

    Rossagues

    Joined:
    Aug 12, 2012
    Location:
    Manchester, England
    #10
    Mine is always generally in the 50-70 degree area. Its never not hot. Thats with a 2.8 GHz Intel Core 2 Duo processor in it!
     
  11. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #11
    Try browsing in list view, instead of icon view, which is more graphics-intensive. See if you still get the spike in usage.
     
  12. M248 macrumors newbie

    Joined:
    Aug 29, 2012
    #12
    I had the same problem. In my case, it was caused by Dropbox.
    I solved it by pausing syncing. Please try it.
     
  13. rbarkman macrumors newbie

    Joined:
    Dec 9, 2003
    Location:
    London
    #13
    And same problem here, traced to Virgin Media's "Backup & Storage" cloud-based-backup app (which is a skinned F-Secure client).

    My guess is either:
    • these apps, which monitor file systems events to determine when to copy files elsewhere, are not using the right calls to the Mountain Lion Finder; or
    • there's a bug in the Mountain Lion Finder that causes it to churn when asked to report events

    It's a pain, because I do like the automatic off-site backup the app provides. But Virgin hasn't updated the thing since 2011, so it's probably out-of-line with 10.8. Dunno if the Dropbox app is in the same position.
     

Share This Page