From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Alan D. Brunelle" Subject: Re: write is faster whan seek? Date: Wed, 11 Jun 2008 07:38:21 -0400 Message-ID: <484FB92D.4090808@hp.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-fsdevel@vger.kernel.org, jens.axboe@oracle.com To: Dmitri Monakhov Return-path: Received: from g4t0014.houston.hp.com ([15.201.24.17]:35431 "EHLO g4t0014.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750890AbYFKLjJ (ORCPT ); Wed, 11 Jun 2008 07:39:09 -0400 In-Reply-To: Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Dmitri Monakhov wrote: Could it be that in the first case you will have merges, thus creating fewer/larger I/O requests? Running iostat -x during the two runs, and watching the output is a good first place to start. Alan