Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1TgILS-0002u7-Rv for pgsql-performance@arkaria.postgresql.org; Wed, 05 Dec 2012 17:01:15 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.72) (envelope-from ) id 1TgILS-0000Iw-5g for pgsql-performance@arkaria.postgresql.org; Wed, 05 Dec 2012 17:01:14 +0000 Received: from makus.postgresql.org ([98.129.198.125]) by malur.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1TgILR-0000Ir-D8 for pgsql-performance@postgresql.org; Wed, 05 Dec 2012 17:01:13 +0000 Received: from relay3-d.mail.gandi.net ([217.70.183.195]) by makus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1TgILP-0005eY-VU for pgsql-performance@postgresql.org; Wed, 05 Dec 2012 17:01:12 +0000 X-Originating-IP: 217.70.178.138 Received: from mfilter9-d.gandi.net (mfilter9-d.gandi.net [217.70.178.138]) by relay3-d.mail.gandi.net (Postfix) with ESMTP id B6B5AA80D9; Wed, 5 Dec 2012 18:00:59 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at mfilter9-d.gandi.net Received: from relay3-d.mail.gandi.net ([217.70.183.195]) by mfilter9-d.gandi.net (mfilter9-d.gandi.net [10.0.15.180]) (amavisd-new, port 10024) with ESMTP id xBrCgkRU8f6m; Wed, 5 Dec 2012 18:00:58 +0100 (CET) X-Originating-IP: 98.27.58.255 Received: from [192.168.10.146] (cpe-098-027-058-255.nc.res.rr.com [98.27.58.255]) (Authenticated sender: adsend@dunslane.net) by relay3-d.mail.gandi.net (Postfix) with ESMTPSA id 025F9A80B8; Wed, 5 Dec 2012 18:00:57 +0100 (CET) Message-ID: <50BF7DC8.7040702@dunslane.net> Date: Wed, 05 Dec 2012 12:00:56 -0500 From: Andrew Dunstan User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0 MIME-Version: 1.0 To: Jean-David Beyer CC: pgsql-performance@postgresql.org Subject: Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance] References: <5076D433.7090605@opinioni.net> <5076DA4E.80504@opinioni.net> <507BC8DE.9050109@opinioni.net> <50BF6980.3090800@opinioni.net> <50BF7B7C.9000204@verizon.net> In-Reply-To: <50BF7B7C.9000204@verizon.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -2.6 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org On 12/05/2012 11:51 AM, Jean-David Beyer wrote: >> >> > I thought that postgreSQL did its own journalling, if that is the > proper term, so why not use an ext2 file system to lower overhead? Postgres journalling will not save you from a corrupt file system. cheers andrew -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance