xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Paul Menzel]

Am Dienstag, den 11.09.2012, 15:24 +0200 schrieb Michel Dänzer:
> On Die, 2012-09-11 at 15:07 +0200, Paul Menzel wrote: 
> > Am Dienstag, den 11.09.2012, 14:55 +0200 schrieb Michel Dänzer:
> > > On Die, 2012-09-11 at 14:42 +0200, Paul Menzel wrote: 
> > > > 
> > > > using Debian Sid/unstable with the awesome 3.4.13-1 window manager and
> > > > Evolution 3.4.3-1, htop shows X to constantly use 10 % of the CPU.
> > > > Closing Evolution the usage goes back to more or less 0 %.
> > > 
> > > I'm not seeing this. Is there something in your Evolution window(s) that
> > > is constantly repainting, e.g. a spinner in the status bar, a blinking
> > > cursor, ... ?
> > 
> > Now that you are mentioning it, in the bottom there is the message
> > »Checking for New Messages« and next to it there is an animation where
> > something goes around a circle. Canceling that removes X’s CPU usage.
> 
> That's a GTK+ spinner widget, which uses RENDER trapezoids, which is a
> software rendering fallback with EXA.

Could that be changed to not us some fallback?

> > Should I recommend something to the Evolution folks on how to due such
> > animations? Or is the only way to avoid animations?
> 
> I don't think there's anything wrong with the animation per se. However,
> one issue I've found is that Evolution schedules many actions as glib
> idle callbacks with priority lower than G_PRIORITY_HIGH_IDLE + 20, which
> is the priority used by GTK+ for drawing animations. This can result in
> the animations delaying the completion of the actual work they're
> representing.

I reported that issue as 

        [Bug 683867] Schedule actions with priority higher than G_PRIORITY_HIGH_IDLE + 20

to the GNOME BTS [1] and Matthew Barnes replied that this should be done
in GTK+ itself.


Thanks,

Paul


[1] https://bugzilla.gnome.org/show_bug.cgi?id=683867
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