Ubuntu
xserver-xorg-video-nouveau package

  1. Bug #1768976
  2. Comment #82

Comment 82 for bug 1768976

Revision history for this message
Davide Sangalli (davide-sangalli) wrote :

@Doug Smythies: thanks for the reply.
I'm sampling every second.

Anyway, just to better understand.
When my system is idle all cores spend in C0 less than 10% of the time and the frequency of each core reported by i7z is different and below 2.2GHz. When I run a single core (and single thread) task, there is just core "0" which is 100% of the time in C0 state (as it should) but I would have expected only such core to reach ~2.9GHz and the other to remain in below. Instead all cores goes to ~2.9GHz.
https://www.youtube.com/watch?v=HBKfkiOgIv4 (sorry for the oversimplified reference)