From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1IxOVA-0005H4-3W for user-mode-linux-devel@lists.sourceforge.net; Wed, 28 Nov 2007 07:07:00 -0800 Received: from saraswathi.solana.com ([198.99.130.12]) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1IxOV8-0002pZ-Ft for user-mode-linux-devel@lists.sourceforge.net; Wed, 28 Nov 2007 07:06:59 -0800 Date: Wed, 28 Nov 2007 10:06:37 -0500 From: Jeff Dike Message-ID: <20071128150637.GA5518@c2.user-mode-linux.org> References: Mime-Version: 1.0 Content-Disposition: inline In-Reply-To: Subject: Re: [uml-devel] -rt doesn't compile for UML List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: user-mode-linux-devel-bounces@lists.sourceforge.net Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net To: Miklos Szeredi Cc: mingo@elte.hu, linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net On Wed, Nov 28, 2007 at 01:47:20PM +0100, Miklos Szeredi wrote: > When writing a big file to a ubd disk, everything in uml slows down to > a crawl, even though CPU usage is minimal. What exactly is your test case? I have some patches which theoretically should help I/O performance which I've been sitting on because I can't find a case where they help. Jeff -- Work email - jdike at linux dot intel dot com ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756615AbXK1PHS (ORCPT ); Wed, 28 Nov 2007 10:07:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756153AbXK1PHG (ORCPT ); Wed, 28 Nov 2007 10:07:06 -0500 Received: from saraswathi.solana.com ([198.99.130.12]:41520 "EHLO saraswathi.solana.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754892AbXK1PHE (ORCPT ); Wed, 28 Nov 2007 10:07:04 -0500 Date: Wed, 28 Nov 2007 10:06:37 -0500 From: Jeff Dike To: Miklos Szeredi Cc: mingo@elte.hu, user-mode-linux-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: -rt doesn't compile for UML Message-ID: <20071128150637.GA5518@c2.user-mode-linux.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 28, 2007 at 01:47:20PM +0100, Miklos Szeredi wrote: > When writing a big file to a ubd disk, everything in uml slows down to > a crawl, even though CPU usage is minimal. What exactly is your test case? I have some patches which theoretically should help I/O performance which I've been sitting on because I can't find a case where they help. Jeff -- Work email - jdike at linux dot intel dot com