it's maybe not noticeable in a typical install,
I have Core i7-2640M CPU @ 2.80GHz with 4 cores (2 physical + hyperthreading). If I run
netinst in KVM with 2 virtual CPUs attached (I assign 2 cores instead of 1 to speed up the
installation), my host performance is *devastated*. I can hardly scroll a web page in
Firefox. Opening any application takes 5-10 seconds. The longer the installation runs, the
worse it gets. If I use Live instead of netinst, everything is smooth and fast. If I
disable the spinner animation using that updates.img, it's again smooth.
This problem didn't exist in F20 and prior. It appeared in F21.
I wanted to perform some measurements to have exact numbers (e.g. the length of an
installation with and without the spinner, depending on the number of CPU cores assigned;
gather some `top` statistics during the run) before reporting the bug, but I never got to
it. Any help is welcome.