From owner-freebsd-hardware@FreeBSD.ORG Tue Jul 17 00:49:24 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 A9747106566C for ; Tue, 17 Jul 2012 00:49:24 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from vps.rulingia.com (host-122-100-2-194.octopus.com.au [122.100.2.194]) by mx1.freebsd.org (Postfix) with ESMTP id 1FB0F8FC0A for ; Tue, 17 Jul 2012 00:49:23 +0000 (UTC) Received: from server.rulingia.com (c220-239-248-69.belrs5.nsw.optusnet.com.au [220.239.248.69]) by vps.rulingia.com (8.14.5/8.14.5) with ESMTP id q6H0nGiY065369 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 17 Jul 2012 10:49:16 +1000 (EST) (envelope-from peter@rulingia.com) X-Bogosity: Ham, spamicity=0.000000 Received: from server.rulingia.com (localhost.rulingia.com [127.0.0.1]) by server.rulingia.com (8.14.5/8.14.5) with ESMTP id q6H0n9Ro068152 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 17 Jul 2012 10:49:10 +1000 (EST) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.14.5/8.14.5/Submit) id q6H0n967068151; Tue, 17 Jul 2012 10:49:09 +1000 (EST) (envelope-from peter) Date: Tue, 17 Jul 2012 10:49:09 +1000 From: Peter Jeremy To: Andy Young Message-ID: <20120717004909.GB66913@server.rulingia.com> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="kfjH4zxOES6UT95V" Content-Disposition: inline In-Reply-To: X-PGP-Key: http://www.rulingia.com/keys/peter.pgp User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-hardware@freebsd.org 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 00:49:24 -0000 --kfjH4zxOES6UT95V Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2012-Jul-16 19:45:18 -0400, 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. =2E.. >other ideas? Again, its perfectly stable with two processors and 64 GB of >memory but goes nuts when I more. Have you checked the motherboard notes to ensure that your configuration is supported? Is the BIOS up to date? What version of FreeBSD is this? And I presume it's amd64 rather than i386+PAE. Have you tried running memtest86 or memtest86+? (You might like to run both because ISTR only the former handles SMP). Can you capture the output from a verbose boot with all the memory installed? The SMAP and/or physical memory layout might offer a clue as to what is going wrong. --=20 Peter Jeremy --kfjH4zxOES6UT95V Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlAEtoUACgkQ/opHv/APuIcu8gCdG4tIaomcl+dIj2JrTFanqxX2 K9gAn0yWlrARLw9tNqKQ8UKMabk6I0kw =Z1P6 -----END PGP SIGNATURE----- --kfjH4zxOES6UT95V--