On Mon, 2021-03-22 at 10:56 -0400, Steven Rostedt wrote:
> On Mon, 22 Mar 2021 12:13:09 +0200
> Tzvetomir Stoyanov <tz.stoyanov@gmail.com> wrote:
> 
> > Confirmed, the problem is in the trace-cmd logic that works with
> > the
> > KVM scaling.  Looks like tsc-scaling-ratio is the default KVM
> > scaling
> > on your machine, (1 << 32), and in that case the scaling should be
> > ignored in our calculations. I still have no solution, going to
> > analyze how the KVM scaling works.
> 
> I'm guessing that this was run on a AMD CPU, as the default scaling
> (the
> one to ignore) is 1 << 32 for AMD and for Intel it's 1 << 48.
> 
BTW, yes. Stefano could give us details (lscpu or anything) if
necessary, but this indeed is AMD.

Regards
-- 
Dario Faggioli, Ph.D
http://about.me/dario.faggioli
Virtualization Software Engineer
SUSE Labs, SUSE https://www.suse.com/
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