Submit Hint Search The Forums LinksStatsPollsHeadlinesRSS
14,000 hints and counting!

Reduce CPU usage by removing video files from the Desktop System 10.6
I was working on my iMac recently when I noticed the hard disk was working overtime. I checked Activity Monitor and found out the Finder was eating into my CPU, from 40% to over 100%. I decided to take everything off my Desktop and enclose it in a folder. Doing so reduced the CPU to nothing until I opened the folder containing the documents. I narrowed it down eventually to an MKV file I had. I can only assume it was QuickLook rendering the movie.

Reduce the files on your desktop, especially movies as these seem to eat into CPU even though you are not using them. Even normal files need rendering every time your Mac launches, so there's no need to leave them there.

[kirkmc adds: The idea isn't new; we covered this back in 2005, and it's pretty well known that files on the Desktop can slow down Macs. The reason I'm posting this is because I have seen the same thing since Mountain Lion. (The hint was submitted as a 10.6 hint, but I've only seen this excess activity since 10.8) I have some video files on a network volume, and if I open a folder containing the files, I can see the network traffic and see in Activity Monitor that QuickLook is working very hard. So not only can this slow down your Mac because of CPU usage, but it can also cause a lot of network activity, if you have such files on a network volume.]
    •    
  • Currently 3.45 / 5
  You rated: 2 / 5 (29 votes cast)
 
[7,623 views]  

Reduce CPU usage by removing video files from the Desktop | 2 comments | Create New Account
Click here to return to the 'Reduce CPU usage by removing video files from the Desktop ' hint
The following comments are owned by whoever posted them. This site is not responsible for what they say.
Reduce CPU usage by removing video files from the Desktop
Authored by: inket on Oct 31, '12 09:39:00AM

I think it's wiser to remove /System/Library/QuickLook/Movie.qlgenerator and get rid of video quicklooks once and for all.



[ Reply to This | # ]
Reduce CPU usage by removing video files from the Desktop
Authored by: kikjou on Oct 31, '12 10:24:51AM

One way to prevent MacOS from rendering files on the desktop, particularly huge video files, is to turn off "Show Icon Preview" in View -> Show View Options (or Command-J) when you are on the Desktop.



[ Reply to This | # ]