X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 9A4FEDA1A1; Wed, 5 Oct 2005 06:43:40 -0300 (ADT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 15001-02; Wed, 5 Oct 2005 09:43:35 +0000 (GMT) Received: from vms040pub.verizon.net (vms040pub.verizon.net [206.46.252.40]) by svr1.postgresql.org (Postfix) with ESMTP id A31CDDA180; Wed, 5 Oct 2005 06:43:35 -0300 (ADT) Received: from osgiliath.mathom.us ([70.108.61.78]) by vms040.mailsrvcs.net (Sun Java System Messaging Server 6.2 HotFix 0.04 (built Dec 24 2004)) with ESMTPA id <0INV0042CSC46OR4@vms040.mailsrvcs.net>; Wed, 05 Oct 2005 04:43:16 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by osgiliath.mathom.us (Postfix) with ESMTP id 1D28460849A; Wed, 05 Oct 2005 05:43:16 -0400 (EDT) Received: from osgiliath.mathom.us ([127.0.0.1]) by localhost (osgiliath [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 01195-04-8; Wed, 05 Oct 2005 05:43:15 -0400 (EDT) Received: by osgiliath.mathom.us (Postfix, from userid 1000) id E4AD5608468; Wed, 05 Oct 2005 05:43:15 -0400 (EDT) Date: Wed, 05 Oct 2005 05:43:15 -0400 From: Michael Stone Subject: Re: [HACKERS] A Better External Sort? In-reply-to: <1128375790.5882.18.camel@fuji.krosing.net> To: Hannu Krosing Cc: pgsql-hackers@postgresql.org, pgsql-performance@postgresql.org Mail-Followup-To: Hannu Krosing , pgsql-hackers@postgresql.org, pgsql-performance@postgresql.org Message-id: <20051005094315.GX2241@mathom.us> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii; format=flowed Content-disposition: inline X-Pgp-Fingerprint: 53 FF 38 00 E7 DD 0A 9C 84 52 84 C5 EE DF 7C 88 X-Virus-Scanned: by amavisd-new-20030616-p10 (Debian) at mathom.us References: <31833713.1128111650174.JavaMail.root@elwamui-polski.atl.sa.earthlink.net> <200510031334.02030.josh@agliodbs.com> <1128372151.28509.1.camel@toonses.gghcwest.com> <200510031416.15620.josh@agliodbs.com> <1128375790.5882.18.camel@fuji.krosing.net> User-Agent: Mutt/1.5.10i X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.003 required=5 tests=[AWL=0.003] X-Spam-Level: X-Archive-Number: 200510/94 X-Sequence-Number: 14862 On Tue, Oct 04, 2005 at 12:43:10AM +0300, Hannu Krosing wrote: >Just FYI, I run a count(*) on a 15.6GB table on a lightly loaded db and >it run in 163 sec. (Dual opteron 2.6GHz, 6GB RAM, 6 x 74GB 15k disks in >RAID10, reiserfs). A little less than 100MB sec. And none of that 15G table is in the 6G RAM? Mike Stone