Ryzen issues on FreeBSD ?

Mike Tancsa mike at sentex.net
Wed Jan 17 13:38:26 UTC 2018

With the Intel issues exposed in meltdown, we were looking at possibly
deploying some Ryzen based servers for FreeBSD.  We got a pair of

CPU: AMD Ryzen 5 1600X Six-Core Processor            (3593.34-MHz
K8-class CPU)
  Origin="AuthenticAMD"  Id=0x800f11  Family=0x17  Model=0x1  Stepping=1

Everything is at its default in the BIOS, no overclocking etc.

However, we are seeing random lockups on both boxes. It doesnt seem to
correspond with load/activity.  And its a hard lockup.  Keyboard not
responsive and I cant break to serial debugger, so it doesnt seem to be
an issue with something in the kernel going into deadlock.

It sort of feels like a hardware issue, but it seems odd that both boxes
are showing the same issue with random lockups like that.  It could be
twice in a day or once every 3 days.

Anyone have any insights ?  Anyone have any suggestions about better
motherboards out there ? We are waiting for Supermicro's Epyc
availability, but nothing yet.  It would be nice if we could find a
board with at least some hardware watchdog on it.


Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike at sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada   http://www.tancsa.com/

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