On 6/14/2018 9:36 AM, Eric van Gyzen wrote: > On 06/13/2018 05:35, Konstantin Belousov wrote: >> Today I noted that AMD published the public errata document for Ryzens, >> https://developer.amd.com/wp-content/resources/55449_1.12.pdf >> >> Some of the issues listed there looks quite relevant to the potential >> hangs that some people still experience with the machines. I wrote >> a script which should apply the recommended workarounds to the erratas >> that I find interesting. >> >> To run it, kldload cpuctl, then apply the latest firmware update to your >> CPU, then run the following shell script. Comments indicate the errata >> number for the workarounds. >> >> Please report the results. If the script helps, I will code the kernel >> change to apply the workarounds. > Kostik: This thread on the -stable list has a lot of positive feedback: > > https://lists.freebsd.org/pipermail/freebsd-stable/2018-June/089110.html I have a couple of Epyc boxes that showed the same lockup behaviour. I will re-install FreeBSD on them and see if their microcode updates fix this issue as well... Should I run the same cpuctl commands on those CPUs ? BTW, I am happy to loan one out to you in the FreeBSD netperf cluster for a few weeks ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 x203 Sentex Communications, mike_at_sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario CanadaReceived on Thu Jun 14 2018 - 12:24:21 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:41:16 UTC