From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Pratt Subject: Re: File System Performance results Date: Wed, 29 Oct 2008 15:05:49 -0500 Message-ID: <4908C21D.5080302@austin.ibm.com> References: <48FF87CE.2090502@austin.ibm.com> <1225308408.6448.287.camel@think.oraclecorp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-fsdevel@vger.kernel.org To: Chris Mason Return-path: Received: from e33.co.us.ibm.com ([32.97.110.151]:55530 "EHLO e33.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753305AbYJ2UGE (ORCPT ); Wed, 29 Oct 2008 16:06:04 -0400 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by e33.co.us.ibm.com (8.13.1/8.13.1) with ESMTP id m9TK5icx014965 for ; Wed, 29 Oct 2008 14:05:44 -0600 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay04.boulder.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id m9TK5oWc032982 for ; Wed, 29 Oct 2008 14:05:50 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m9TK5KF3017237 for ; Wed, 29 Oct 2008 14:05:20 -0600 In-Reply-To: <1225308408.6448.287.camel@think.oraclecorp.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Chris Mason wrote: > On Wed, 2008-10-22 at 15:06 -0500, Steven Pratt wrote: > >> We have set up a new page which is intended mainly for tracking the >> performance of BTRFS, but in doing so we are testing other filesystems >> as well (ext3, ext4, xfs and jfs). Thought some people here might find >> the results useful. >> > > I think I understand the bad read performance in btrfs. I was forcing a > tiny max readahead size. > > The current git tree has fixes for it, along with a ton of new code. > Ok, we'll kick off some new runs. Also, just need to push out the data fro odirect random write and mail server with fsync. Steve > -chris > >