X-Original-To: pgsql-performance@postgresql.org Received: from localhost (developer.postgresql.org [64.117.224.193]) by developer.postgresql.org (Postfix) with ESMTP id 62B6D9256BC for ; Fri, 30 May 2003 10:44:32 -0400 (EDT) Received: from developer.postgresql.org ([64.117.224.193]) by localhost (developer.postgresql.org [64.117.224.193:10024]) (amavisd-new) with ESMTP id 10707-05 for ; Fri, 30 May 2003 10:44:31 -0400 (EDT) Received: from mail.libertyrms.com (unknown [209.167.124.227]) by developer.postgresql.org (Postfix) with ESMTP id CF15F925608 for ; Fri, 30 May 2003 10:44:30 -0400 (EDT) Received: from [10.1.2.130] (helo=dba2) by mail.libertyrms.com with esmtp (Exim 3.22 #3 (Debian)) id 19Ll7P-0002Cr-00 for ; Fri, 30 May 2003 10:44:31 -0400 Received: by dba2 (Postfix, from userid 1019) id D3C27D0E0; Fri, 30 May 2003 10:44:30 -0400 (EDT) Date: Fri, 30 May 2003 10:44:30 -0400 From: Andrew Sullivan To: pgsql-performance Subject: Re: Hardware advice Message-ID: <20030530144430.GD17867@libertyrms.info> Mail-Followup-To: Andrew Sullivan , pgsql-performance References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.4i X-Virus-Scanned: by amavisd-new X-Archive-Number: 200305/276 X-Sequence-Number: 2055 On Fri, May 30, 2003 at 03:23:28PM +0100, Adam Witney wrote: > RAID5 for 3x 146Gb drives I find the RAID5 on the PERC to be painfully slow. It's _really_ bad if you don't put WAL on its own drive. Also, you don't mention it, but check to make sure you're getting ECC memory on these boxes. Random memory errors which go undetected will make you very unhappy. ECC lowers (but doesn't eliminate, apparently) your chances. A -- ---- Andrew Sullivan 204-4141 Yonge Street Liberty RMS Toronto, Ontario Canada M2P 2A8 +1 416 646 3304 x110