Re: [regression] cross core scheduling frequency drop bisected to 0c313cb20732

From: Peter Zijlstra
Date: Sat Apr 09 2016 - 07:07:42 EST


On Fri, Apr 08, 2016 at 10:59:59PM +0200, Rafael J. Wysocki wrote:
> On Friday, April 08, 2016 08:50:54 AM Mike Galbraith wrote:
> > On Fri, 2016-04-08 at 08:45 +0200, Peter Zijlstra wrote:
> >
> > > Cute, I thought you used governor=performance for your runs?
> >
> > I do, and those numbers are with it thus set.
>
> Well, this is a trade-off.
>
> 4.5 introduced a power regression here so this one goes back to the previous
> state of things.

Just for my elucidation; how can gov=performance have a 'power'
regression?