Why is "dock" taking up 90% of my CPU?!

Discussion in 'MacBook Air' started by ki2594, Jun 18, 2012.

  1. macrumors 6502a

    Joined:
    Apr 12, 2008
    Location:
    Carmel, IN.
    #1
    Hey all,

    Just got my brand new macbook air and restored it from a time machine backup. but for some reason activity monitor is showing "dock" as taking up extreme amounts of CPU usage and it's burning up the fans. Not sure what to do. any ideas?
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    Got Parallels Desktop installed?
    Killed Dock via Activity Monitor yet and seen, if the behaviour returns?
     
  3. macrumors 6502

    Joined:
    Jan 9, 2012
    #3
    Try restarting the computer. Did your Time Machine backup include any massive applications that could cause your computer to slow down?
     
  4. thread starter macrumors 6502a

    Joined:
    Apr 12, 2008
    Location:
    Carmel, IN.
    #4
    no to parallels and yup, same thing happens.

    barredfreak: i do have some big apps which is really the only reason i did it from a back up. but i don't understand why that's making the dock take up so much cpu. it's actually scary how it's still going on lol
     
  5. thread starter macrumors 6502a

    Joined:
    Apr 12, 2008
    Location:
    Carmel, IN.
    #5
    Anybody? Struggling to find an answer :/
     
  6. macrumors 68000

    oneMadRssn

    Joined:
    Sep 8, 2011
    Location:
    Boston, MA
    #6
    Perhaps it's spotlight indexing your drive?
     
  7. thread starter macrumors 6502a

    Joined:
    Apr 12, 2008
    Location:
    Carmel, IN.
    #7
    Doesn't it tell me that when I use spotlight? Like it shows a progress bar and stuff showing how much is left to index? It's not showing anything
     
  8. thread starter macrumors 6502a

    Joined:
    Apr 12, 2008
    Location:
    Carmel, IN.
    #8
    No parallels install, no VMware, no indexing appears to be going on- still 80-90% cpu usage from the dock. :/ frustrating.
     
  9. macrumors 6502a

    Joined:
    Sep 14, 2011
    Location:
    Essex, england
    #9
    have you got any applications open without knowing it? i have the weird knack of just going out of an application and forgetting i even had it open.
     
  10. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #10
    1. Launch Activity Monitor
    2. Change "My Processes" at the top to "All Processes"
    3. Click on the CPU column heading once or twice, so the arrow points downward (highest values on top).
    4. Click on the System Memory tab at the bottom.
    5. Take a screen shot of the whole Activity Monitor window, then scroll down to see the rest of the list, take another screen shot
    6. Post your screenshots.
     
  11. thread starter macrumors 6502a

    Joined:
    Apr 12, 2008
    Location:
    Carmel, IN.
    #11
    here you are. please save it.
     

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  12. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #12
    Try deleting the /Users/yourusername/Library/Preferences/com.apple.dock.plist file, then open Terminal and type the following command, followed by pressing enter/return:
    killall Dock​
     
  13. thread starter macrumors 6502a

    Joined:
    Apr 12, 2008
    Location:
    Carmel, IN.
    #13
    still at 90 percent.
     
  14. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #14
    Launch Activity Monitor and change "My Processes" at the top to "All Processes", then click on the CPU column heading once or twice, so the arrow points downward (highest values on top). Then start quitting processes one-by-one, beginning with the ones that have are owned by your user name, and keep an eye on the Dock.app usage. Hopefully, you'll be able to isolate the culprit.
     
  15. Ke5
    macrumors newbie

    Joined:
    Jun 18, 2012
    #15
    I am having the exact same problem. I just received my Macbook Air today, brand new. Have not loaded Parallels or any other VM ware. I did load CrossOver.

    My Dock is running at 94% even after I followed the above suggesting of deleting the plist record from my library and killall Dock.

    My Activity Monitor processes looks similar to the Ki2594.

    I will try killing the processes as last suggested.
     
  16. Ke5
    macrumors newbie

    Joined:
    Jun 18, 2012
    #16
    I tried killing several processes, either they don't quit or they come back and it's still running at 93% on dock. there is one process that won't force quit called com.apple.dock.extra. Do you know what this process is, whether it's needed, might be the culprit? And how to safely remove it / stop it?
     
  17. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #17
    Do you have a /Users/yourusername/Library/Preferences/com.apple.dock.extra.plist file? If so, try deleting it and killing your Dock, as I described earlier. Or try deleting that plist, then immediately rebooting.
     
  18. macrumors member

    Joined:
    Dec 17, 2007
    #18
    Hey Ke5,

    I have the same computer as you do (got it yesterday) and the exact same problem. I'm going to the genius bar today at 5:45 PM PST, I'll update this thread with what they tell me.

    Hopefully they can fix it.. I called applecare earlier today, and they said it was a hardware issue, and it might need to be replaced. IMHO, I think it's software, but we'll see.

    Not sure if this is happening to you, Ke5, but since dock is using >85% cpu, my temperature is going >90C, making my fans go to 6000RPM, which in turn is killing my battery--I get about 45min on 100%.
     
  19. Ke5
    macrumors newbie

    Joined:
    Jun 18, 2012
    #19
    Hi GGJstudios, I have searched everywhere and do not see a com.apple.dock.extra.plist in the either my home or system library folder. I've also searched for it with spotlight and finder search to no avail.

    ----------

    NitrousFlare - Yes, please let me know what you hear from the genius bar. Man, I hope it is NOT a hardware issue. Keep me posted. Thanks. :)
     
  20. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #20
    You would have to follow the exact path I posted. Spotlight is useless, as it does not search Library folders. Only Finder can do that. You probably already know this, but some may not: your Library folders are hidden by default in Lion. To get to your /Library or /Users/yourusername/Library (also known as the ~/Library) folders in Lion:
    • Launch Finder and click Go > Go to Folder and type: /Library or ~/Library
    • Hold the Option key while clicking the Go menu item, which reveals your ~/Library folder in the menu.
    • Make it permanently visible by entering the following command in Terminal, then press the Enter key:
      chflags nohidden ~/Library​
    • 18 ways to view the ~/Library folder in Lion
     
  21. Ke5
    macrumors newbie

    Joined:
    Jun 18, 2012
    #21
    GGJStudio - I do it a slightly different way, but I think it's the same outcome. I was looking in the same directory where I found the other plist file you had me delete earlier (com.apple.dock.plist), so I think I was in the correct place, but didn't find it the one with extra in it (com.apple.dock.extra). I checked the system library file as well, just for good measure. :)

    defaults write com.apple.Finder AppleShowAllFiles TRUE
    killall Finder
     
  22. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #22
    You did it right, of course. There are many who post questions who don't know such things. It's tough to know in advance what someone's computer literacy level is. It was just a guess on the possible presence of the plist file. I'm finding it somewhat difficult to get definitive information on what that process is or does, exactly. I'm guessing it may be new to Lion, as I don't have that process on Snow Leopard. If I find anything else, I'll let you know.
     
  23. Ke5
    macrumors newbie

    Joined:
    Jun 18, 2012
    #23
    I completely understand. I also work in the IT world (not Mac support) but other software, so I can 100% relate to your statement. Ha. And absolutely take no offense. Better to assume that way. I also did some searching and couldn't find anything definitive on that file.

    Hopefully the guys at the genius bar can help our other buddy NitrousFlare in the next few hours all we'll get some resolution.

    Thanks again for your time.
     
  24. thread starter macrumors 6502a

    Joined:
    Apr 12, 2008
    Location:
    Carmel, IN.
    #24
    so I talked with Apple and after trying everything with them, nothing really worked.

    So I made a new admin account and when i logged into that, everything was fine. So I had to delete the other admin accounts (i didn't lose my applications still) and now I have to manually move my music/movies over BUT all is well now at least.
     
  25. macrumors 68030

    iPhil

    #25


    Here's something on com.apple.dock.extra issue aka Voice over issue etc :eek:


    More on Voice over issue
     

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