Hey guys,

On Thu, 2021-02-18 at 22:53 -0500, Steven Rostedt wrote:
> On Thu, 18 Feb 2021 21:03:52 -0500
> Steven Rostedt <rostedt@goodmis.org> wrote:
> 
> > Hence, we can use x86-tsc as the clock for both the host and guest,
> > and
> > then using perf find out how to convert that to what the 'local'
> > clock
> > would produce. At least the multiplier and the shfit.
> 
> I just tried this out:
> 
>  http://rostedt.org/private/perf-trace.c
> 
> Where I did:
> 
>  # trace-cmd record -M 1 -C local -e irq -e sched taskset -c 0
> ./perf-trace
> time_shift=31
> time_mult=633046315
> time_offset=-125757047487632
>
Let me ask something really really stupid: where was this run?

Host? Gust? Both?

This seems very interesting... But I definitely need to stare more at
your code (while scratching my head, at least for now :-P).

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