Date: Tue, 23 Jan 2018 10:15:10 -0800 (PST) From: Don Lewis <truckman@FreeBSD.org> To: Pete French <petefrench@ingresso.co.uk> Cc: freebsd-stable@freebsd.org Subject: Re: Ryzen issues on FreeBSD ? Message-ID: <tkrat.7ec3b3b4964a2db2@FreeBSD.org> In-Reply-To: <a1ad31b5-7152-38b0-6721-b85977ce3448@ingresso.co.uk> References: <8e842dec-ade7-37d1-6bd8-856ea1a827ca@sentex.net> <3b625072-dfb3-6b4f-494d-7fe1b2fa554c@ingresso.co.uk> <2c6ce4dd-f43c-7c40-abc2-732d6f8996ec@sentex.net> <tkrat.6d8f44d87e74fa14@FreeBSD.org> <795dbb79-3c18-d967-98b9-5d09a740dbfe@sentex.net> <CAMgUhpr%2B5HeBi1MRegs=XoKpdHW8-i%2Bec0k-DNaL_pcN6PCPKw@mail.gmail.com> <tkrat.5ec856810e0c7ced@FreeBSD.org> <CAMgUhpqZyCOjqVhMCAi-b_JaKYtyfqDf0pOcX0LwV2dcTuusyg@mail.gmail.com> <CAMgUhpqpYpoi1bD9h_SYvh83g_Csky%2BqMkTsOYZ1zcHYxtMeHg@mail.gmail.com> <dd29d77a-deb9-423e-f9b8-cb07387bbfd5@sentex.net> <9b769e4e-b098-b294-0bce-8bb1c42e8a59@rootautomation.com> <a601973f-9205-8dd9-7f78-a7f03985ab4a@sentex.net> <CAMgUhpop3=J7TQimK2iHdGTc=hnTgCEZDqibDSRCyTPMWX5wJQ@mail.gmail.com> <CAMgUhpop54hJ%2Biq_VYYqrEHgSapmMu_GmOPaOsmhA=QbjPEZ5A@mail.gmail.com> <CADbMJxk=HDoMsPghDrkTNqsC_XZo28nYPNGC%2BD9fddENPiiFng@mail.gmail.com> <730eb882-1c6a-afb7-0ada-396db44fb34b@ingresso.co.uk> <tkrat.8fa97919286143d7@FreeBSD.org> <a1ad31b5-7152-38b0-6721-b85977ce3448@ingresso.co.uk>
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On 23 Jan, Pete French wrote: > On 22/01/2018 18:25, Don Lewis wrote: >> On 22 Jan, Pete French wrote: >>> >>> >>> On 21/01/2018 19:05, Peter Moody wrote: >>>> hm, so i've got nearly 3 days of uptime with smt disabled. >>>> unfortunately this means that my otherwise '12' cores is actually only >>>> '6'. I'm also getting occasional segfaults compiling go programs. >>> >>> Isn't go known to have issues on BSD anyway though ? I have seen >>> complaints of random crashes running go under BSD systems - and >>> preseumably the go compiler itself is written in go, so those issues >>> might surface when compiling. >> >> Not that I'm aware of. I'm not a heavy go user on FreeBSD, but I don't >> recall any unexpected go crashes and I haven't seen problems building >> go on my older AMD machines. > > > From the go 1.9 release notes: > > "Known Issues > There are some instabilities on FreeBSD that are known but not > understood. These can lead to program crashes in rare cases. See issue > 15658. Any help in solving this FreeBSD-specific issue would be > appreciated." > > ( link is to https://github.com/golang/go/issues/15658 ) > > Having said that, we use it internally and have not seen any issues with > it ourselves. Just I am wary of the release notes, and that issue report. Interesting ... I've only seen problems on my Ryzen machine, which has >= 2x the number of cores as any of my other machines. All are AMD CPUs.
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