From owner-freebsd-bugs@freebsd.org Fri Jul 7 11:12:26 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 3E6D1DA083B for ; Fri, 7 Jul 2017 11:12:26 +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 2749D760BA for ; Fri, 7 Jul 2017 11:12:26 +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 v67BCQHu068175 for ; Fri, 7 Jul 2017 11:12:26 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, 07 Jul 2017 11:12:26 +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: shitman71@hotmail.com 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, 07 Jul 2017 11:12:26 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219399 --- Comment #51 from SF --- Its not caused by the b350-chipset, its caused by power-supply of boards wi= th the b350-chipset. I was on the right track, x370 boards with pci-slots also have this weak power-supply. It seems like just the high-end-boards aren't affected by this. You can affect this with cooling, ram and power-settings within your bios. I did try this myself and its exactly what i previously sayed, only power-settings give you more stableness. Set CPU Switching Frequency to the highest you can. Set CPU Power Phase Con= trol to Full Phase Mode. CPU/SOC Load Line Calibration is something i still don't understand what it is doing but setting both to extreme seems to worsen it. Do you remember me saying the top-blower-cooler is worse then the zalman? Do you know why? The top-blower blows the hot air onto the heat-sinks of the power-supply. Do you know why watercooling was much more stable? All the hot stuff got transported away from the board, having the heatsinks getting much less heat. With aircooling i can get stable 3200Mhz with my ram, this previously wasn't possible because i mistakenly put some weak thermal-grease onto it. Thinking this didn't do much. --=20 You are receiving this mail because: You are the assignee for the bug.=