Received: from localhost (maia-5.hub.org [200.46.204.182]) by postgresql.org (Postfix) with ESMTP id E64669FBFBB for ; Wed, 9 May 2007 06:38:30 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.182]) (amavisd-maia, port 10024) with ESMTP id 16213-04 for ; Wed, 9 May 2007 06:38:23 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from cassarossa.samfundet.no (cassarossa.samfundet.no [129.241.93.19]) by postgresql.org (Postfix) with ESMTP id 04BC39FBF5B for ; Wed, 9 May 2007 06:38:26 -0300 (ADT) Received: from trofast.sesse.net ([129.241.93.32]) by cassarossa.samfundet.no with esmtp (Exim 4.50) id 1Hlicp-0007VI-VR for pgsql-performance@postgresql.org; Wed, 09 May 2007 11:38:24 +0200 Received: from sesse by trofast.sesse.net with local (Exim 3.36 #1 (Debian)) id 1Hlicq-0002nx-00 for ; Wed, 09 May 2007 11:38:24 +0200 Date: Wed, 9 May 2007 11:38:24 +0200 From: "Steinar H. Gunderson" To: pgsql-performance@postgresql.org Subject: Re: Best OS for Postgres 8.2 Message-ID: <20070509093824.GB10644@uio.no> Mail-Followup-To: pgsql-performance@postgresql.org References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Operating-System: Linux 2.6.20.4 on a x86_64 X-Message-Flag: Outlook? --> http://www.mozilla.org/products/thunderbird/ User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200705/177 X-Sequence-Number: 24567 On Wed, May 09, 2007 at 01:57:51AM -0700, david@lang.hm wrote: > given that RAID, snapshots, etc are already in the linux kernel, I suspect > that what will need to happen is for the filesystem to be ported without > those features and then the userspace tools (that manipulate the volumes ) > be ported to use the things already in the kernel. Well, part of the idea behind ZFS is that these parts are _not_ separated in "layers" -- for instance, the filesystem can push data down to the RAID level to determine the stripe size used. Whether this is a good idea is of course hotly debated, but I don't think you can port just the filesystem part and call it a day. /* Steinar */ -- Homepage: http://www.sesse.net/