Received: from localhost (maia-1.hub.org [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id 44C619FC2CC for ; Fri, 8 Jun 2007 16:41:52 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-maia, port 10024) with ESMTP id 01629-05 for ; Fri, 8 Jun 2007 16:41:48 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from mx01.burntmail.com (mx01.burntmail.com [69.93.121.66]) by postgresql.org (Postfix) with ESMTP id 3276C9FC2AE for ; Fri, 8 Jun 2007 16:41:48 -0300 (ADT) Received: from pool-72-66-94-73.washdc.fios.verizon.net ([72.66.94.73] helo=[127.0.0.1]) by mx01.burntmail.com with esmtpa (Exim 4.63) (envelope-from ) id 1HwkLE-0004Vr-C6 for pgsql-performance@postgresql.org; Fri, 08 Jun 2007 14:41:48 -0500 Message-ID: <4669B0F7.9070201@burntmail.com> Date: Fri, 08 Jun 2007 15:41:43 -0400 From: Guy Rouillier User-Agent: Thunderbird 2.0.0.0 (Windows/20070326) MIME-Version: 1.0 To: postgresql performance list Subject: Re: How much ram is too much References: <47A154B5-496C-478A-B60D-4238AF12EAC6@fastcrypt.com> <466987CD.7040408@burntmail.com> <46829B73-CF97-400B-8FA6-67A16F68BCAB@fastcrypt.com> In-Reply-To: <46829B73-CF97-400B-8FA6-67A16F68BCAB@fastcrypt.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 000748-0, 06/07/2007), Outbound message X-Antivirus-Status: Clean X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200706/173 X-Sequence-Number: 25206 Dave Cramer wrote: > It's an IBM x3850 using linux redhat 4.0 I had to look that up, web site says it is a 4-processor, dual-core (so 8 cores) Intel Xeon system. It also says "Up to 64GB DDR II ECC memory", so are you sure you can even get 128 GB RAM? If you could, I'd expect diminishing returns from the Xeon northbridge memory access. If you are willing to spend that kind of money on memory, you'd be better off with Opteron or Sparc. -- Guy Rouillier