Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933253AbXBWWca (ORCPT ); Fri, 23 Feb 2007 17:32:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933247AbXBWWca (ORCPT ); Fri, 23 Feb 2007 17:32:30 -0500 Received: from agminet01.oracle.com ([141.146.126.228]:60383 "EHLO agminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933256AbXBWWc3 (ORCPT ); Fri, 23 Feb 2007 17:32:29 -0500 Date: Fri, 23 Feb 2007 14:31:12 -0800 From: Joel Becker To: Jens Axboe Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Linus Torvalds , Arjan van de Ven , Christoph Hellwig , Andrew Morton , Alan Cox , Ulrich Drepper , Zach Brown , Evgeniy Polyakov , "David S. Miller" , Suparna Bhattacharya , Davide Libenzi , Thomas Gleixner Subject: Re: A quick fio test (was Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3) Message-ID: <20070223223112.GJ7920@ca-server1.us.oracle.com> Mail-Followup-To: Jens Axboe , Ingo Molnar , linux-kernel@vger.kernel.org, Linus Torvalds , Arjan van de Ven , Christoph Hellwig , Andrew Morton , Alan Cox , Ulrich Drepper , Zach Brown , Evgeniy Polyakov , "David S. Miller" , Suparna Bhattacharya , Davide Libenzi , Thomas Gleixner References: <20070221211355.GA7302@elte.hu> <20070223125247.GO5737@kernel.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070223125247.GO5737@kernel.dk> X-Burt-Line: Trees are cool. X-Red-Smith: Ninety feet between bases is perhaps as close as man has ever come to perfection. User-Agent: Mutt/1.5.11 X-Brightmail-Tracker: AAAAAQAAAAI= X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE X-Whitelist: TRUE Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1090 Lines: 35 On Fri, Feb 23, 2007 at 01:52:47PM +0100, Jens Axboe wrote: > Results: > > Engine Depth Bw (MiB/sec) > -------------------------------------------- > libaio 1 441 > syslet 1 574 > sync 1 589 > libaio 32 613 > syslet 32 681 Can we get runs with large I/Os, large I/O depths, and most importantly tons of processes? I can absolutely believe that syslets would compete well with one process on the system. But with 1000 processes doing 1000s of blocking I/Os, I'd really be interested to see how that plays out. Joel -- Joel's Second Law: If a code change requires additional user setup, it is wrong. Joel Becker Principal Software Developer Oracle E-mail: joel.becker@oracle.com Phone: (650) 506-8127 - 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/