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Date: Sat, 2 Mar 2019 19:12:17 +0200
From: Konstantin Belousov <kostikbel@gmail.com>
To: Poul-Henning Kamp <phk@phk.freebsd.dk>
Cc: Ian Lepore <ian@freebsd.org>, Mark Millard <marklmi@yahoo.com>,
 Mark Millard via freebsd-hackers <freebsd-hackers@freebsd.org>,
 bde@freebsd.org, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>
Subject: Re: powerpc64 head -r344018 stuck sleeping problems: th->th_scale *
 tc_delta(th) overflows unsigned 64 bits sometimes [patched failed]
Message-ID: <20190302171217.GG68879@kib.kiev.ua>
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On Sat, Mar 02, 2019 at 02:49:59PM +0000, Poul-Henning Kamp wrote:
> --------
> In message <20190302142814.GF68879@kib.kiev.ua>, Konstantin Belousov writes:
> >On Sat, Mar 02, 2019 at 02:17:10PM +0000, Poul-Henning Kamp wrote:
> 
> >More the timehands, more the propagation can be delayed by the hardware.
> 
> One of the two of us don't understand how timecounters work.

Perhaps look at the code ?  Pre-2015 (or so) timecounters did not worked
on non-TSO machines.