From owner-freebsd-hardware@FreeBSD.ORG Tue Jul 17 00:57:32 2012 Return-Path: Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 99EDE1065670 for ; Tue, 17 Jul 2012 00:57:32 +0000 (UTC) (envelope-from erichfreebsdlist@ovitrap.com) Received: from alogreentechnologies.com (alogreentechnologies.com [67.212.224.110]) by mx1.freebsd.org (Postfix) with ESMTP id 602248FC12 for ; Tue, 17 Jul 2012 00:57:32 +0000 (UTC) Received: from amd620.ovitrap.com ([49.128.188.2]) (authenticated bits=0) by alogreentechnologies.com (8.13.1/8.13.1) with ESMTP id q6H0vRWL015395; Mon, 16 Jul 2012 18:57:30 -0600 From: Erich Dollansky To: freebsd-hardware@freebsd.org Date: Tue, 17 Jul 2012 07:59:44 +0700 User-Agent: KMail/1.13.7 (FreeBSD/8.3-STABLE; KDE/4.7.4; amd64; ; ) References: In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201207170759.44995.erichfreebsdlist@ovitrap.com> Cc: Andy Young Subject: Re: Server memory problems X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Jul 2012 00:57:32 -0000 Hi, On Tuesday 17 July 2012 06:45:18 Andy Young wrote: > I am having trouble with one of our servers and I'm not sure what to try > next. It has a Supermicro H8DGi-F motherboard with two 16-core AMD > processors and two memory banks, one for each processor. When I originally > built it, I only had one processor and 40 GB of ram. Everything worked > awesome. I recently upgraded it, adding another processor and another 40 GB > of ram. It was incredibly unstable and constantly rebooted within minute or > two of uptime, sometimes it wouldn't even boot all the way before crashing > and rebooting again. Seemed like a memory issue so I scaled it back to two > processors and 32 GB (4x8GB) of ram. Worked well so I added the remaining 8 > GB sticks I had, bringing it up to 64 GB. Still worked great. The sticks I > had left were a mix and match variety of 8GB and 4GB sticks. Thinking maybe > there was some problem with mixing them, I ordered more 8GB memory just > like the ones in the box. While waiting for the new memory, the machine > performed great with no issues. New memory arrived and I added two more 8GB > sticks. Immediately the constant crashing returned. It seems really > unlikely that I got bad memory in two separate orders. Does anyone have any > other ideas? Again, its perfectly stable with two processors and 64 GB of > memory but goes nuts when I more. > could it be caused by the power supply? Did you run a memory test? If possible, try different power supplies. > I really appreciate the help!! > > Motherboard: Supermicro H8DGi-F > CPU: 2 x AMD 6274 (2.2 Ghz 16-core) > Memory: Kingston 8GB DDR3 1333 No ECC? Erich