From owner-freebsd-bugs@freebsd.org Fri Jun 30 16:19:15 2017 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 90584D9534D for ; Fri, 30 Jun 2017 16:19:15 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7E0E374120 for ; Fri, 30 Jun 2017 16:19:15 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v5UGJEUB025801 for ; Fri, 30 Jun 2017 16:19:15 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen... Date: Fri, 30 Jun 2017 16:19:15 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: nbe@renzel.net X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Jun 2017 16:19:15 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219399 --- Comment #18 from Nils Beyer --- SF, sorry, but what five values do you mean exactly? I'm currently not at work = so I cannot test anything for the rest of the weekend. But, because you are experiencing improvments by playing around with voltag= es, it's probably more a voltage than a timing problem. One thing that wonders me most is that the CPU keeps very, very cool at 54= =C2=B0C during compiling stuff with 14 threads. We're talking about an octa-core CPU with 3.0 GHz. Even OCing to 3.4GHz, the temperature stays at 58=C2=B0C. For my taste this temperature is too low, and this suggests that the Ryzen = CPU is permanently undervoltaged. If you feel boldly, you can try the following: - reset all settings to the default values in your BIOS (also SoC volta= ge) - set the CPU VCore voltage staticly to 1.412V and see if that helps in your situation. This has been suggested here: https://community.amd.com/message/2805287?tstart=3D0#2805287 (last sentence) Because I'm home, I cannot test that at the moment. I know that this has not much to do with FreeBSD at all, but for some reason this behaviour is triggered using it. We have another Ryzen-based sever run= ning Win2008R2, and it doesn't show that behaviour at all... BTW: my poudriere build system performed a hard reset (instead of a black screen crash) recently after 8.5 hours - luckily; because so I can still ac= cess it now... --=20 You are receiving this mail because: You are the assignee for the bug.=