Received: from maia.hub.org (maia-3.hub.org [200.46.204.243]) by mail.postgresql.org (Postfix) with ESMTP id 4B4E41337B93 for ; Wed, 20 Apr 2011 12:40:23 -0300 (ADT) 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 96830-05 for ; Wed, 20 Apr 2011 15:40:15 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from smtp2.peak6.com (smtp2.peak6.com [38.98.137.9]) by mail.postgresql.org (Postfix) with ESMTP id 59788133798E for ; Wed, 20 Apr 2011 12:40:15 -0300 (ADT) X-AuditID: 0a02cb1e-b7cdfae000006f5e-80-4daefe5dd34d Message-ID: <4DAEFE5D.8020006@peak6.com> Date: Wed, 20 Apr 2011 10:40:13 -0500 From: Shaun Thomas Reply-To: Organization: Peak6 User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.7) Gecko/20100720 Lightning/1.0b2 Thunderbird/3.1.1 MIME-Version: 1.0 To: Laurent Laborde CC: Jeff , Subject: Re: postgresql random io test with 2 SSD Kingston V+100 500GB in (software) Raid1 References: <4DAD7B0D.4000105@2ndQuadrant.com> In-Reply-To: Content-Type: text/plain; charset="ISO-8859-1"; format=flowed content-transfer-encoding: 7bit X-Originating-IP: [10.10.221.50] X-Brightmail-Tracker: AAAAAQAAAZE= X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.91 tagged_above=-10 required=5 tests=BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 X-Spam-Level: X-Archive-Number: 201104/282 X-Sequence-Number: 43344 On 04/20/2011 09:01 AM, Laurent Laborde wrote: > A review of the V+100 on the excellent anandtech : > http://www.anandtech.com/show/4010/kingston-ssdnow-v-plus-100-review That's horrifying. 4.9MB/s random writes? 19.7MB/s random reads? That's at least an order of magnitude lower than other SSDs of that generation. I can't imagine that would be very good for database usage patterns by comparison. Especially with that aggressive garbage collection. I mean... an old Indilinx OCZ Vertex has better performance than that. -- Shaun Thomas OptionsHouse | 141 W. Jackson Blvd. | Suite 800 | Chicago IL, 60604 312-676-8870 sthomas@peak6.com ______________________________________________ See http://www.peak6.com/email_disclaimer.php for terms and conditions related to this email