Received: from maia.hub.org (maia-3.hub.org [200.46.204.243]) by mail.postgresql.org (Postfix) with ESMTP id AFEF91337B8C for ; Thu, 23 Dec 2010 21:49:07 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia, port 10024) with ESMTP id 54897-08 for ; Fri, 24 Dec 2010 01:49:00 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from outmail149057.authsmtp.net (outmail149057.authsmtp.net [62.13.149.57]) by mail.postgresql.org (Postfix) with ESMTP id 67D5313364DE for ; Thu, 23 Dec 2010 21:49:00 -0400 (AST) Received: from mail-c193.authsmtp.com (mail-c193.authsmtp.com [62.13.128.118]) by punt2.authsmtp.com (8.14.2/8.14.2/Kp) with ESMTP id oBO1mskc079514; Fri, 24 Dec 2010 01:48:54 GMT Received: from Sidney-Stratton.local (or-67-232-70-91.dhcp.embarqhsd.net [67.232.70.91]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2) with ESMTP id oBO1mpdX008569; Fri, 24 Dec 2010 01:48:52 GMT Message-ID: <4D13FC03.5090001@agliodbs.com> Date: Thu, 23 Dec 2010 17:48:51 -0800 From: Josh Berkus User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1b3pre) Gecko/20090223 Thunderbird/3.0b2 MIME-Version: 1.0 To: John Cagle CC: pgsql-performance@postgresql.org Subject: Re: concurrent IO in postgres? References: In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Server-Quench: f64a86ce-0eff-11e0-97bb-002264978518 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCdyZgscClZXSx8a IioLCC5HRQ8+YBZL BAkGMA9GIUINWEQL c1AAch1/PVZbHwkA A3YLWl5QWFd0Wi1z bBRTbgdDZUpQVgR1 Uk1LR01SWloafh1c Rkp2Uhl6cgNPNnxx ZUYsCHZfDUx8JhNg QhsCQ3AHZDJgdWkY AhJFdwNWcgVOdxhN b1F3GhFYa3VsBg8C MSgJGgV5NjJZIzlP WAwLMRozZg4KGHYk QAseEi8iBhpt X-Authentic-SMTP: 61633136333939.1014:706 X-AuthFastPath: 0 (Was 255) X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.9 tagged_above=-10 required=5 tests=BAYES_00=-1.9 X-Spam-Level: X-Archive-Number: 201012/305 X-Sequence-Number: 41757 John, > When a write() to a Fusion-io device has been acknowledged, the data is > guaranteed to be stored safely. This is a strict requirement for any > enterprise-ready storage device. Thanks for the clarification! While you're here, any general advice on configuring fusionIO devices for database access, or vice-versa? -- -- Josh Berkus PostgreSQL Experts Inc. http://www.pgexperts.com