Date: Wed, 24 Jan 2018 06:22:00 -0800 From: Mark Millard <marklmi26-fbsd@yahoo.com> To: nimrodl@gmail.com, michaelp@bsquare.com, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: Ryzen issues on FreeBSD ? Message-ID: <A6A50EB1-6944-40B4-9F33-002336F582E6@yahoo.com>
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Mike Pumford michaelp at bsquare.com wrote on Wed Jan 24 12:03:04 UTC 2018 : > I've run into this on modern Intel systems as well. The RAM is sold as > 2400 but thats actually an overclock profile. If I actually enabled it > (despite both board and RAM being qualified for that) the system ends up > locking up or crashing as soon as you stress it. Go back to the standard > DDR profile advertised by the RAM and it is totally stable. The reported fails are during idle time as I understand. Things are working when the CPU's are kept busy from what I've read in the various notes. The hang-ups are during idle times. "the system ends up locking up or crashing as soon as you stress it" does not sound like a matching context. That a slower RAM speed might help idle behave correctly is interesting given the Zen and Ryzen dependence on RAM speed for the speed of its internal interconnect-fabric's operation. I'll note that, if one goes through the referenced Linux exchanges about this, Ryzen Threadripper's examples are also reported to have the problem. === Mark Millard marklmi at yahoo.com ( markmi at dsl-only.net is going away in 2018-Feb, late)
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