From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992829AbXDDKmO (ORCPT ); Wed, 4 Apr 2007 06:42:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992839AbXDDKmO (ORCPT ); Wed, 4 Apr 2007 06:42:14 -0400 Received: from wr-out-0506.google.com ([64.233.184.238]:1294 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2992829AbXDDKmM (ORCPT ); Wed, 4 Apr 2007 06:42:12 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=peyjn1Y2AIZx8YYvpoMhOQI3g/+SwK2hvEj/NJVGjSeERLGm/qxrE9S6mQ/7c15ONNsi5fxVrKWdS2/ckUV4fl/5/2F6ZIQ6jgOxCjbQAF+7o5S0VvtkG1gFJIepaoUirR1mbbJNvm53VWxHZuSGjYEGSvV93fZOVCNQAjn6zE4= Message-ID: <88df6dda0704040342q3f8988a3idac7d88e51b9b181@mail.gmail.com> Date: Wed, 4 Apr 2007 16:12:11 +0530 From: "Ameya Mitragotri" To: "Phillip Susi" Subject: Re: fadvise+sync_file_range Vs O_DIRECT Cc: linux-kernel@vger.kernel.org, suparna@in.ibm.com, pbadari@gmail.com In-Reply-To: <4612A8C5.1080103@cfl.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <88df6dda0704030351u44fab6bcj20f9b48d24de861a@mail.gmail.com> <4612A8C5.1080103@cfl.rr.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 4/4/07, Phillip Susi wrote: > Ameya Mitragotri wrote: > > Hello, > > I am doing some benchmarking on writes to the hdd from a simple > > application (attached). > > Im benchmarking the writes using the following > > - write with O_DIRECT > > - write with fadvise + O_SYNC > > - write with fadvise + sync_file_range > > Did you use overlapped aio with O_DIRECT or just send down one request > at a time? The app sends the requests one at a time Thanks Ameya