From owner-freebsd-net@FreeBSD.ORG Sun Apr 20 03:15:50 2008 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 412121065671 for ; Sun, 20 Apr 2008 03:15:50 +0000 (UTC) (envelope-from oceanare@pacific.net.sg) Received: from smtpgate2.pacific.net.sg (smtpgate2.pacific.net.sg [203.120.90.32]) by mx1.freebsd.org (Postfix) with SMTP id 6FDEE8FC16 for ; Sun, 20 Apr 2008 03:15:49 +0000 (UTC) (envelope-from oceanare@pacific.net.sg) Received: (qmail 31791 invoked from network); 20 Apr 2008 02:49:06 -0000 Received: from bb116-14-167-83.singnet.com.sg (HELO P2120.somewherefaraway.com) (oceanare@116.14.167.83) by smtpgate2.pacific.net.sg with ESMTPA; 20 Apr 2008 02:49:06 -0000 Message-ID: <480A867D.5070901@pacific.net.sg> Date: Sun, 20 Apr 2008 07:55:41 +0800 From: Erich Dollansky User-Agent: Thunderbird 2.0.0.6 (X11/20070826) MIME-Version: 1.0 To: Paul Haddad References: <944074f30804191423v93d1acet9246269e4072d46a@mail.gmail.com> In-Reply-To: <944074f30804191423v93d1acet9246269e4072d46a@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: net@freebsd.org Subject: Re: Network Instability when upgrading to 4GB of RAM X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 20 Apr 2008 03:15:50 -0000 Hi, Paul Haddad wrote: > I've got the below system setup that has so far been very stable when > running with 2GB of RAM. I've recently been attempting to upgrade it to 4GB > of ram (using 4 DIMMs vs the current 2). The problem is that within a few > hours of running with the 4GB config I start getting odd network errors. > There's nothing in the logs, but incoming ssh connections start failing > with errors like (Bad Packet Length) and things like ftp and nfs all fail in > odd ways. > > As far as I can tell the RAM is fine, I've ran it through a few diff RAM > testing utilities and it all comes out fine. I've also successfully run > both sets of DIMMs by themselves, so at least it seems that this isn't a > hardware problem. > it still could be a contact problem with the RAM. Can you create some kind of load to force all 4GB of being actually used without any network activity. Maybe even with the network 'unplugged'? Do you have ECC RAM? Erich