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Gnome Shell: very slow performance

asked 2014-05-22 15:10:46 -0500

Raphael gravatar image

Hi! On my ~3 years old sub-notebook (1.66 GHz CPU, 1 GB RAM), Fedora 20 with Gnome 3 is using ~30% CPU (390 MB RAM) when idle. "Activities" requires about 5 - 10 seconds to open while CPU goes up to ~100%. (For comparison: Cent OS with Gnome 2 uses <1% CPU (130 RAM) when idle, and the application menu opens instantly.) Has Gnome really gotten such resource-intensive or might there be something wrong?

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Please provide the output of this command:

glxinfo | grep -i render
hedayat gravatar imagehedayat ( 2014-05-23 01:46:55 -0500 )edit


direct rendering: Yes
OpenGL renderer string: Mesa DRI Intel(R) IGD
Raphael gravatar imageRaphael ( 2014-05-23 08:14:37 -0500 )edit

Extra RAM usage is probably normal for Gnome 3. However, CPU usage should not be that high. Is these numbers still valid after about 10 minutes after login? Does gnome-shell process take 30%? or there are other processes?

hedayat gravatar imagehedayat ( 2014-05-23 08:35:24 -0500 )edit

With only a gnome-terminal window open running "top", CPU usage goes down to ~2% after some minutes. However Gnome 3 uses over 10x more CPU than Gnome 2 when moving a window or opening the main menu:

moving a window (Gnome 3)
60-80% gnome-shell
10-12% Xorg

moving a window (Gnome 2)
5-8% Xorg
1-2% metacity

opening "activities" (Gnome 3)
60-97% gnome-shell
1-2% Xorg

opening applications menu (Gnome 2)
2% Xorg
1-2% gnome-panel

Raphael gravatar imageRaphael ( 2014-05-23 13:38:17 -0500 )edit

2 Answers

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answered 2014-05-23 15:45:29 -0500

hedayat gravatar image

Well, I think I should say that your experience is quite "normal". Yes, unfortunately, gnome shell is much different from old gnome. You might try installing gnome-classic-session and select gnome classic on login to see if you like the experience. Disabling animations (e.g. using dconf-editor) is another option.

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Thanks for your support, hedayat! Unfortunately, disabling animations didn't help, and classic session only made the app launcher faster but didn't help apart from that. It's a pity that Gnome has become such slow and resource hungry (although they've removed much functionality)...

Raphael gravatar imageRaphael ( 2014-05-25 07:10:23 -0500 )edit

You're welcome. Yes, that's unfortunate. Anyway, if you prefer the old gnome, you can install MATE desktop which is the gnome 2 branch renamed to MATE and is being continued. Fortunately, it is in Fedora repositories. Cinnamon is another alternative, but I doubt if you'll get much better performance than gnome shell.

hedayat gravatar imagehedayat ( 2014-05-25 07:53:05 -0500 )edit

I've just installed MATE and it seems to run as smooth and fast as old GNOME. :) Thanks again!

Raphael gravatar imageRaphael ( 2014-05-25 13:40:25 -0500 )edit

You're welcome! :)

hedayat gravatar imagehedayat ( 2014-05-26 04:36:04 -0500 )edit

answered 2014-05-24 05:17:35 -0500

ruojiner gravatar image

updated 2014-05-24 05:19:27 -0500

KDE is your better choice.But you can install a SSD drive to let the GNOME Shell faster.

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Asked: 2014-05-22 15:10:46 -0500

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Last updated: May 24 '14