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Old 01-07-2011, 08:52 PM   #1
MunkyCheez
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Registered: Jan 2011
Distribution: Xubuntu (XFCE)
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CPU Usage Spike When Moving Windows with Xubuntu (XFCE)


Hello everybody! I noticed that when moving a window in Xubuntu (XFCE), the CPU usage spikes quite a bit (70% and even higher! ). I have tried to solve this myself, to no avail. I have:
- Searched Google
- Tested on Windows and Mac machines: I'm not sure if I am saying this correctly, but Windows does not have "active" window moving; it draws a frame around the window and moves that, which I can image does not take a lot of processing power. On my MacBook, moving windows causes a slight increase (adding about 5-10% to CPU usage), but remember that the MacBook has a dual-core processor.
My Linux machine has the following specs:
- 2.2 GHz Pentium 4 CPU
- 768 MB RAM
- Onboard graphics <-- Hmmmmm.... could be it???
- 40 GB HDD
- Xubuntu 10
- Dual Optical Drives
Your help would be greatly appreciated as I am trying to maximize the effiency of my machine (which is why I chose XFCE instead of GNOME)... Thanks!
 
Old 01-07-2011, 09:44 PM   #2
halborr
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Registered: Aug 2009
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I can't offer specific click-here type advice, but there is *probably* an option in the preferences menu to just draw outlines on moving windows (I seem to remember a term "opaque windows moving" or something. Might be leftover from my Windows days?).
 
Old 01-07-2011, 10:15 PM   #3
MunkyCheez
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Registered: Jan 2011
Distribution: Xubuntu (XFCE)
Posts: 5

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Quote:
Originally Posted by halborr View Post
I can't offer specific click-here type advice, but there is *probably* an option in the preferences menu to just draw outlines on moving windows (I seem to remember a term "opaque windows moving" or something. Might be leftover from my Windows days?).
Thanks for the quick reply! I've had to move my computer in my house and haven't yet re-connected it. I will look for a setting sometime this weekend, and I'll let you know what happens!

Last edited by MunkyCheez; 01-07-2011 at 10:16 PM.
 
Old 01-07-2011, 11:11 PM   #4
jlinkels
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Registered: Oct 2003
Location: Bonaire
Distribution: Debian Wheezy/Jessie/Sid, Linux Mint DE
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The cause is that window movement is apparently not being performed bu your graphics adapter, but being put back on your CPU. That is a driver property, when the driver decides the GPU can't do it, the calculations are routed to the CPU.
Depending on your graphics chip, you might have the incorrect driver installed. Check your driver (read /var/log/Xorg.0.log) and google if this is the correct driver for Xubuntu + graphics chip.

jlinkels
 
  


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