Profile a widget style

[Mantia Andras]

On Tuesday, August 31, 2010, Olivier Goffart wrote:
> Le Monday 30 August 2010, Mantia Andras a écrit :
> > Hi,
> > 
> >  if you missed my blog (http://www.kdedevelopers.org/node/4318),
> >  here is
> > 
> > the summary: I found that Oxygen + nvidia driver + certain nvidia
> > cards cause high CPU usage on XOrg. Plastique doesn't cause it.
> > The question: anyone has an idea how could I profile what goes
> > wrong?
> 
> Hi,
> 
> Which Qt graphicssystem do you use?  You may try to use raster
> instead of the native X11 backend.
> 
> I guess oxygen triggers primitives that are not optimized.  I know
> for example that Oxygen draws a lot of gradian which can be slow 
> (And Qt X11 graphics system does not use the latest X11 extensions
> to make it fast)

Well, the whole idea is to profile the normal case (X11 system, NVidia 
graphics), so using raster would not make sense.

Andras