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Date:      Sat, 04 Apr 2020 15:06:54 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 244705] /usr/src/sys/x86/x86/tsc.c: System Clock is 0.3% slow since r352684
Message-ID:  <bug-244705-227-4mwR7tiNpu@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-244705-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-244705-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D244705

Greg V <greg@unrelenting.technology> changed:

           What    |Removed                     |Added
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                 CC|                            |greg@unrelenting.technology

--- Comment #1 from Greg V <greg@unrelenting.technology> ---
On my Ryzen system, r352684 (or something.. but nothing else TSC related
happened recently) caused the TSC to go completely nuts, time is quickly
becoming off by many minutes, I looked at the clock yesterday and it was 3
hours behind :D

kern.timecounter.hardware=3DHPET seems to be better (-14 sec desync from NT=
P in
an hour without an NTP daemon, that's not crazy and should be manageable by
NTP)

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