X-Original-To: pgsql-performance-postgresql.org@postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id 68AB59FA4F0 for ; Mon, 18 Sep 2006 20:58:45 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 17266-06 for ; Mon, 18 Sep 2006 20:58:41 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from vms040pub.verizon.net (vms040pub.verizon.net [206.46.252.40]) by postgresql.org (Postfix) with ESMTP id 25D009FA4EE for ; Mon, 18 Sep 2006 20:58:40 -0300 (ADT) Received: from osgiliath.mathom.us ([72.66.19.85]) by vms040.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0J5T006Z1BX40UJ4@vms040.mailsrvcs.net> for pgsql-performance@postgresql.org; Mon, 18 Sep 2006 18:58:17 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by osgiliath.mathom.us (Postfix) with ESMTP id 69F5A6E85C for ; Mon, 18 Sep 2006 19:58:14 -0400 (EDT) Received: from osgiliath.mathom.us ([127.0.0.1]) by localhost (osgiliath.home.mathom.us [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 8ZDbwMHARltG for ; Mon, 18 Sep 2006 19:58:13 -0400 (EDT) Received: by osgiliath.mathom.us (Postfix, from userid 1000) id 75A946F109; Mon, 18 Sep 2006 19:58:13 -0400 (EDT) Date: Mon, 18 Sep 2006 19:58:13 -0400 From: Michael Stone Subject: Re: Large tables (was: RAID 0 not as fast as expected) In-reply-to: <33c6269f0609181614h32d2d379k99b313530ce2ab0f@mail.gmail.com> To: pgsql-performance@postgresql.org Mail-followup-to: pgsql-performance@postgresql.org Message-id: <20060918235810.GS6030@mathom.us> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii; format=flowed Content-disposition: inline X-Virus-Scanned: Debian amavisd-new at mathom.us X-Pgp-Fingerprint: 53 FF 38 00 E7 DD 0A 9C 84 52 84 C5 EE DF 7C 88 References: <78ED28FACE63744386D68D8A9D1CF5D42099E1@MAIL.corp.lumeta.com> <33c6269f0609181614h32d2d379k99b313530ce2ab0f@mail.gmail.com> User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.578 tagged_above=0 required=5 tests=AWL, FORGED_RCVD_HELO, SPF_PASS X-Spam-Level: X-Archive-Number: 200609/237 X-Sequence-Number: 20923 On Mon, Sep 18, 2006 at 07:14:56PM -0400, Alex Turner wrote: >If you have a table with 100million records, each of which is 200bytes long, >that gives you roughtly 20 gig of data (assuming it was all written neatly >and hasn't been updated much). If you're in that range it doesn't even count as big or challenging--you can keep it memory resident for not all that much money. Mike Stone