[Bug 256781] EC2 Nitro: TSC-low timecounter lags
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Date: Fri, 19 Nov 2021 07:39:57 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256781
dwmw2@infradead.org changed:
What |Removed |Added
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CC| |dwmw2@infradead.org
--- Comment #37 from dwmw2@infradead.org ---
The TSC shouldn't vary; I suspect what we're seeing here is an issue with the
i8253 PIT making the calibration go wrong.
Do you have a current way to switch back from kvmclock to TSC and test, that I
can experiment with and then include in regression tests please?
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