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Dock uses 320% CPU after 10.7.2 update

After upgrading to 10.7.2, and after some time suddenly Dock takes all the CPU and gets unresponsible. killall Dock on terminal does not seem to really kill the task, so I have to reboot to get it solved. After some time the problem repeats.


Console events are quite concerning:


14/10/11 11:11:08,045 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,046 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,046 coreservicesd: FMOD WATCH EVENTS DROPPED!

14/10/11 11:11:08,048 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,048 coreservicesd: FMOD WATCH EVENTS DROPPED!

14/10/11 11:11:08,067 com.apple.launchd.peruser.501: (com.apple.pbs) Throttling respawn: Will start in 1 seconds

14/10/11 11:11:08,071 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,071 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,071 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,082 coreservicesd: FMOD WATCH EVENTS DROPPED!

14/10/11 11:11:08,104 com.apple.launchd.peruser.501: (com.apple.pbs) Throttling respawn: Will start in 1 seconds

14/10/11 11:11:08,128 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,128 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,128 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,155 coreservicesd: FMOD WATCH EVENTS DROPPED!

14/10/11 11:11:08,155 coreservicesd: FMOD WATCH EVENTS DROPPED!

14/10/11 11:11:08,155 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,155 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,155 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,155 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,178 com.apple.launchd.peruser.501: (com.apple.pbs) Throttling respawn: Will start in 1 seconds

14/10/11 11:11:08,175 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,175 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,178 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,178 mds: (Error) FMW: WE ARE DROPPING FMW EVENTS!

14/10/11 11:11:08,181 coreservicesd: FMOD WATCH EVENTS DROPPED!

14/10/11 11:11:08,181 coreservicesd: FMOD WATCH EVENTS DROPPED!


Any idea on what can I do to solve it?

MacBook Pro, Mac OS X (10.7.2)

Posted on Oct 14, 2011 3:11 AM

Reply
48 replies

Oct 20, 2011 7:34 AM in response to CoolDixon

I have the exact same problem high CPU utilization due to the Dock. Running VM Fusion 4.0.2. Installed Lion 10.7.2 and Dropbox two days ago. This is when the problem started. Have been running VM Fusion for sometime without the problem. Problem persists after quitting VM Fusion. However, the problem stopped after quitting Mail. I just restarted Mail and both VM Fusion and Dropbox running. 15 minutes and it has not returned... yet.

Oct 20, 2011 8:32 AM in response to CoolDixon

Ok, forget off the console logs and what not. This is a bug in VMware Fusion. That is one. Two I posted this on the forum over there and I will repost it for for all of you. I use Windows 7 Professional in a VM that I must have for work so here you go:


I am also having the same issue. Within an hour of starting a simple Windows 7 x64 VM - using 1 core and 2GB RAM - the processor usage and memory go through the ceiling on the Dock process. Literally using all available CPU processes and over 2-3GB of memory itself. This is not a usable or acceptable bug. I need to use Windows 7 for work and I cannot afford to spend time restarting things every 2 hours. It uses so many resources that time machine cannot back up and eventually the whole system becomes unusable - and not in the generlly thought of way but in th way I remember windows being when explorere and everything that goes with it was crashing. I have some theories and I am going to try to turn off the 3D aceleration and see if that makes a difference but I really hope this gets the attention of VMWare. I enjoy a lot of the feature the seperates Fusion from Parallels. I work in IT and need to be able to interchange and use different VM's on the fly before they go to our ESX server and/or other VMware workstation PC's. If it wasn't for that fact alone - I may very well already be downloading Parallels. I will update with how the 3D adjustment goes.



UPDATE (over an hour later): After Shutting down the VM and going into the settings - to help you that dont know (Virtual Machine>Settings>Display) and turned off the 3D Acceleration (which I don't need for my work applications) the problem seems to have stopped. The dock is now not going over 32 MB of memory used and the CPU use is stable (generally arond 0.1% or lower) !!!!


I hope VMWare fixes this soon, but for now this will be a decent workaround. Hope this helps more of you! I will repost this over at apple support.

Oct 20, 2011 9:51 AM in response to cconsite1

OK, I am still having the problem - worked fine all yesterday but Dock shot the CPU right up when I woke my MBP this morning. This is what I have done that HAS NOT worked:


  1. Disabled 3D Acceleration in side VM
  2. Deleted com.apple.dock.plist from \preferences under library and rebuilt dock
  3. Excluded my virtual machine file from spotlight searches


Parallels had a similar problem a while ago. It appeared to be related to Dock not liking the Windows icons appearing in dock when in Parallels version of unity mode. Does anybody know how to prevent windows program icons from appearing in dock?

Oct 20, 2011 10:00 AM in response to cmeister

I am coming to the same conclusion. I suspect the Window's icons in the dock. This is what I tried this morning. I suspended VM Fusion. I removed the windows icons in the dock (right click, options, uncheck "keep in dock"). I then started VM Fusion in the single window mode. That way, it does not put any of the windows icons in the dock. The problem did not occur. After about an hour, I decided to see what happens when I switch to the Unity mode in VM Fusion (which puts the icons in the dock). Guess what... CPU shot up via the dock, as indicated in the activity monitor. mmm...?

Oct 20, 2011 12:29 PM in response to cconsite1

That's strange. I had no icons in the dock when the issue appeared, nor was ussing unity. Since I removed the VM folder from spotlight four days ago I havent suffered the problem again. By the way, cconsite1 explains the behavior exactly how I saw it, system became almost compleately unresponsible, 3.5 Gb ram consumed. The only contradiction is that I run Windows XP x86 ( 3D acceleration turned on). I did suspend it (and of course quit fusion compleately), then killed Dock and problem was gone.

Oct 21, 2011 5:57 AM in response to CoolDixon

I've been struggling with this as well. It seems to be linked to VMWare, and I've found it happens on both my Win 7 VM and my XP VM. I have 3D Acceleration OFF but this still occurs. I have deleted the com.apple.dock.plist, com.apple.dock.db, and com.apple.dock.plist.lockfile and it seems to solve the issue for a while, several hours in fact, but if I leave the VM running, it eventually comes back.


I do NOT use Unity view either.


2.4 Core 2 Duo White Macbook 4,1 Early 2008

4G RAM

256G SSD & 500G OptiBay HD

OSX 10.7.2

VMWare 4.0.2

Oct 24, 2011 8:38 AM in response to 51HHMD

I posted in this thread earlier, but under a different user name.


Update-- turned off 3D running in VM (V4.0.2) single window mode. After about 2 hours, fan is running and dock CPU at 150%. Win 7, 2.66 2 Duo, 8 GB Ram. OSX 10.7.2. I just had my VM environment sitting idle I did not have any Windows application open.


The folks at VMWare better get this fixed. The only solution I can think of now is to roll back to 3.X. At least that worked. Who says the early bird gets the worm?

Oct 27, 2011 2:35 PM in response to USB_Connect

I received a response from VMWare. These suggestions are in another discussion group. I have tried teh steps to disable application sharing as well, but they did not fix the issue for me. I also provided them a log.


FROM VMWARE:


Thank you for contacting VMware Fusion Technical Support. My name is Ranjeet and I will be working with you on your Fusion technical query. As I understand, you're encountering an issue high CPU usage with your Dock process when a virtual machine is open.This is a known issue. It started happening recently with a few customers after the 10.7.2 update.It seems that the issue disappears if the Application sharing is disabled. Please follow these steps to do it:1) Shutdown any running VMs.2) Select Window > Virtual Machine Library from the top menu bar.3) Right click on a VM and select Settings4) Select "Applications Menu"5) Against "Show applications menu in menu bar", select Never6) Select show all7) Under "Default Applications", uncheck the 3 boxes8) Reboot the Mac see if the issue is still occurring.

Dec 12, 2011 3:20 PM in response to CoolDixon

Looks like it's all kinds of crap. VMware, dropbox, Outlook/Exchange and 1password seem to give it some issues. It seems that anything that triggers the mds or has a database/indexing involved is freaking the crap out of the brave old cat - Lion... native apple apps work ok but 3rd party is screwing the heck out of the Dock - hope there is a fix for this. It seems very inconsistent as well. My MacBook Pro does not have any of these Doc issues and it has the same programs as my Mac Pro which goes Doc crazy everyday. i've reinstalled Lion fresh as well as with Snow Leopard but it seems to have the same issues. I don't share apps in VMware or run 3d but still have high CPU.

Dock uses 320% CPU after 10.7.2 update

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