Received: from maia.hub.org (maia-5.hub.org [200.46.204.29]) by mail.postgresql.org (Postfix) with ESMTP id 686B81337B69 for ; Wed, 13 Oct 2010 09:34:35 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.29]) (amavisd-maia, port 10024) with ESMTP id 76508-05 for ; Wed, 13 Oct 2010 12:33:31 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from hrndva-omtalb.mail.rr.com (hrndva-omtalb.mail.rr.com [71.74.56.122]) by mail.postgresql.org (Postfix) with ESMTP id 0F8191337BF3 for ; Wed, 13 Oct 2010 09:33:28 -0300 (ADT) X-Authority-Analysis: v=1.1 cv=QISHQ+x4xS+apxgDHgAvNvlUjyrXCzYsHvuXcbPYiKg= c=1 sm=0 a=_6Iw8BWMfOIA:10 a=8nJEP1OIZ-IA:10 a=RAii6je2cdnAH6ATCOpc6g==:17 a=_Ixf_7qHAAAA:8 a=kZ1qUKMwKDMUZIXpQk4A:9 a=ZpprTR5deFTFI8O3G_Ivhjm43d8A:4 a=wPNLvfGTeEIA:10 a=ryAo9hy1-OkA:10 a=6vsjEBoLwlAA:10 a=0tfO7MgyNwYA:10 a=RAii6je2cdnAH6ATCOpc6g==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.73.87.196 Received: from [74.73.87.196] ([74.73.87.196:56355] helo=[192.168.1.103]) by hrndva-oedge04.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 35/A3-11377-817A5BC4; Wed, 13 Oct 2010 12:33:28 +0000 Message-ID: <4CB5A718.6050206@vmsinfo.com> Date: Wed, 13 Oct 2010 08:33:28 -0400 From: Mladen Gogala User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.9) Gecko/20100915 Lightning/1.0b2 Thunderbird/3.1.4 MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: Slow count(*) again... References: <201010091626.18636.neil.whelchel@gmail.com> <4CB11CC7.8070300@vmsinfo.com> <4CB167CA.9070109@postnewspapers.com.au> <4CB1F46E.80205@vmsinfo.com> <90E30938-1E5E-4DCA-A1FB-AEECEB76A70D@richrelevance.com> <4CB48127.6090200@drivefaster.net> <8BE535FE-F9DB-4CBC-A932-EB4F07905698@richrelevance.com> <4CB495A7.6010700@drivefaster.net> <4CB5A223.4070609@2ndquadrant.com> In-Reply-To: <4CB5A223.4070609@2ndquadrant.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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, RCVD_IN_DNSWL_NONE=-0.0001 X-Spam-Level: X-Archive-Number: 201010/207 X-Sequence-Number: 40626 On 10/13/2010 8:12 AM, Greg Smith wrote: > The work incorporating a more stable XFS into RHEL started with xfsprogs > 3.0.1-6 going into Fedora 11, and 3.1.X would represent a current > release. So your Ubuntu kernel is two major improvement releases > behind, 3.0 and 3.1 were the upgrades to xfsprogs where things really > got going again making that code modern and solid. Ubuntu Lucid > switched to 3.1.0, RHEL6 will probably ship 3.1.0 too. > I am afraid that my management will not let me use anything that doesn't exist as a RPM package in the current Red Hat distribution. No Ubuntu, no Fedora, no manual linking. There will always be that ominous question: how many other companies are using XFS? From the business perspective, questions like that make perfect sense. -- Mladen Gogala Sr. Oracle DBA 1500 Broadway New York, NY 10036 (212) 329-5251 www.vmsinfo.com