Bug#808706: gnome-shell: using too much memory and CPU

[Drew Parsons]

On Mon, 21 Dec 2015 22:07:59 +0000 Sandro Tosi <morph at debian.org>
wrote:
> this is from top right now:
> 
>   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+
COMMAND                                                                
                                                     
>  3716 Debian-+  20   0 3886372 989008  31748 R  54.3 12.1   1069:26
gnome-shell
> 
> it's definitely too much memory and CPU usage


I don't have a solution but I have been experiencing this problem from
time to time.  If I understood correctly, this instance of gnome-shell
(user Debian-+) is associated with the operation of gdm3, i.e. it's
"gnome-shell --mode=gdm".  The gnome-shell you work directly with is
run under your own username, cf. ps aux | grep gnome-shell.

I'm finding that a reboot resets Debian-+ gnome-shell back to normal
cpu usage.

I wonder if the CPU overload comes either from a bad state after a few
suspend/resume cycles, or if it happens due to library inconsistencies
after upgrading gnome or xorg packages without rebooting.