Date: Wed, 25 Apr 2018 09:39:06 -0400 From: Mike Tancsa <mike@sentex.net> To: Don Lewis <truckman@FreeBSD.org> Cc: Pete French <petefrench@ingresso.co.uk>, nimrodl@gmail.com, eric@vangyzen.net, freebsd-stable@freebsd.org, freebsd@hda3.com, avg@freebsd.org Subject: Re: Ryzen issues on FreeBSD ? (with sort of workaround) Message-ID: <3bb5fef2-381c-8e1b-21dc-6b8687fb6c1e@sentex.net> In-Reply-To: <tkrat.5235cb463511b830@FreeBSD.org> References: <E1fAaRY-0000nB-Ut@dilbert.ingresso.co.uk> <59b435cf-f4fb-0cc8-3bd0-0765ac0592da@sentex.net> <84898b9f-991c-420a-3ebd-f8c4ad9915e1@ingresso.co.uk> <e41b6aa4-7ac1-44b4-8b88-fd744e31f7e2@sentex.net> <tkrat.5235cb463511b830@FreeBSD.org>
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On 4/24/2018 8:04 PM, Don Lewis wrote: >> >> I was able to lock it up with vbox. bhyve was just a little easier to >> script and also I figured would be good to get VBox out of the mix in >> case it was something specific to VBox. I dont recall if I tried it >> with SMT disabled. Regardless, on Intel based systems I ran these tests >> for 72hrs straight without issue. I can sort of believe hardware issue >> or flaky motherboard BIOSes (2 ASUS MBs, 1 MSI MB, 3 Ryzen chips), but >> the fact that two server class MBs from SuperMicro along with an Epyc >> chip also does the same thing makes me think something specific to >> FreeBSD and this class of AMD CPU :( > > It would be interesting to test other AMD CPUs. I think AMD and Intel > have some differences in the virtualization implementations. I dont have any Opterons handy unfortunately. However, I have a feeling its not so much due to virtualization, as I am pretty sure I had a crash when I wasnt doing any VM testing as well. Peter Grehan speculated it might have something to do with a lot of IPIs being generated. Are there any non VM workloads that will generate many IPIs ? ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 x203 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada
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