High CPU on latest nightly

[Kamil Paral]

> On Mon, 2015-03-02 at 22:46 +0000, Alexander Bisogianis wrote:
> > > I'm not seeing anything like that on my F22 desktop.
> > > 
> > 
> > I mean while installing F22, all four CPUs on the KVM host (F21) are
> > constantly at 100% usage.
> > 
> > Running top in TTY2, while F22 is installing, I see:
> > 
> > Xorg using constantly CPU 60%-70%
> > 2 anaconda processes using constantly CPU 60%-70%
> > 
> > I can understand anaconda, but Xorg?
> 
> IIRC there's a spinner or something similar visible during install; it
> could well be caused by that. I even think I caught some discussion
> about a patch to disable it during automated test runs or something in
> #anaconda the other day...

Alexander, try running the installation with this boot option:

inst.updates=https://kparal.fedorapeople.org/tmp/no-spinner.img

It should disable spinner animation. Then compare the CPU usage. I still haven't gotten to reporting it as a bug, but it's true that the spinner seems to be a *gigantic* performance hog, making all our installations take much longer, especially in VMs.