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@xxxxxxxxx> 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/ ------------------------------------------------------------------- <<This happens because _I_ choose it to happen!>> (Raistlin Majere)
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