Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id E14DB6323D1 for ; Fri, 4 Jun 2010 15:47:10 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 69965-02 for ; Fri, 4 Jun 2010 18:47:03 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from mail.anarazel.de (mail.anarazel.de [217.115.131.40]) by mail.postgresql.org (Postfix) with ESMTP id 7A66F632EB7 for ; Fri, 4 Jun 2010 15:47:03 -0300 (ADT) Received: from alap2.localnet (p579FA9CD.dip.t-dialin.net [87.159.169.205]) by mail.anarazel.de (Postfix) with ESMTPSA id 6DB97448003; Fri, 4 Jun 2010 20:47:01 +0200 (CEST) From: Andres Freund To: pgsql-performance@postgresql.org Subject: Re: How filesystems matter with PostgreSQL Date: Fri, 4 Jun 2010 20:46:59 +0200 User-Agent: KMail/1.13.2 (Linux/2.6.34-andres-08406-g52b0ace; KDE/4.4.2; x86_64; ; ) Cc: Jon Schewe , Tom Lane References: <4C08EEDF.7090403@mtu.net> <201006041633.23343.andres@anarazel.de> <4C094553.7040000@mtu.net> In-Reply-To: <4C094553.7040000@mtu.net> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201006042047.00025.andres@anarazel.de> X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.79 tagged_above=-10 required=5 tests=BAYES_50=0.8, T_RP_MATCHES_RCVD=-0.01 X-Spam-Level: X-Archive-Number: 201006/105 X-Sequence-Number: 38961 On Friday 04 June 2010 20:26:27 Jon Schewe wrote: > ext3 barrier=1: ~15 minutes > ext4 nobarrier: ~15 minutes Any message in the kernel log about barriers or similar? Andres