Date: Sat, 02 Mar 2019 06:57:31 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Ian Lepore <ian@freebsd.org> Cc: Mark Millard <marklmi@yahoo.com>, Mark Millard via freebsd-hackers <freebsd-hackers@freebsd.org>, Konstantin Belousov <kib@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: <8565.1551509851@critter.freebsd.dk> In-Reply-To: <210dfd0f50ee6b1149c914ee503502654eb5f328.camel@freebsd.org> References: <D3D7E9F4-9A5E-4320-B3C8-EC5CEF4A2764@yahoo.com> <20190228145542.GT2420@kib.kiev.ua> <20190228150811.GU2420@kib.kiev.ua> <962D78C3-65BE-40C1-BB50-A0088223C17B@yahoo.com> <28C2BB0A-3DAA-4D18-A317-49A8DD52778F@yahoo.com> <20190301112717.GW2420@kib.kiev.ua> <679402FF-907C-43AF-B18C-8C9CC857D7A6@yahoo.com> <6669.1551473821@critter.freebsd.dk> <210dfd0f50ee6b1149c914ee503502654eb5f328.camel@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
-------- In message <210dfd0f50ee6b1149c914ee503502654eb5f328.camel@freebsd.org>, I= an Lepore writes: >On Fri, 2019-03-01 at 20:57 +0000, Poul-Henning Kamp wrote: >> -------- >> In message <679402FF-907C-43AF-B18C-8C9CC857D7A6@yahoo.com>, Mark >> Millard via freebsd-hackers writes: >> = >> > > I must admit that 2 seconds of interval where the timehands where >> > > not updated is too much. >> = >> I have no idea how you got in that situation, but it is very far >> from how timecounters were designed to work. >> = > >I wonder if it's fallout from reducing the number of timehands to 2, Unless somebody added refcounting, that sounds even less safe. -- = Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe = Never attribute to malice what can adequately be explained by incompetence= .
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?8565.1551509851>