Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932854AbaD1X5c (ORCPT ); Mon, 28 Apr 2014 19:57:32 -0400 Received: from mail.anarazel.de ([217.115.131.40]:38212 "EHLO mail.anarazel.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932554AbaD1X5a (ORCPT ); Mon, 28 Apr 2014 19:57:30 -0400 Date: Tue, 29 Apr 2014 01:57:14 +0200 From: Andres Freund To: Dave Chinner Cc: rhaas@anarazel.de, linux-kernel@vger.kernel.org, lsf@lists.linux-foundation.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, Wu Fengguang Subject: Re: [Lsf] Postgresql performance problems with IO latency, especially during fsync() Message-ID: <20140428235714.GA16070@awork2.anarazel.de> References: <20140326191113.GF9066@alap3.anarazel.de> <20140409092009.GA27519@dastard> <20140428234756.GM15995@dastard> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140428234756.GM15995@dastard> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Dave, On 2014-04-29 09:47:56 +1000, Dave Chinner wrote: > ping? I'd replied at http://marc.info/?l=linux-mm&m=139730910307321&w=2 As an additional note: > On Wed, Apr 09, 2014 at 07:20:09PM +1000, Dave Chinner wrote: > > I'm not sure how you were generating the behaviour you reported, but > > the test program as it stands does not appear to be causing any > > problems at all on the sort of storage I'd expect large databases to > > be hosted on.... A really really large number of database aren't stored on big enterprise rigs... Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/