From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1B2x0X-00014a-DL for user-mode-linux-devel@lists.sourceforge.net; Mon, 15 Mar 2004 10:40:13 -0800 Received: from [12.177.129.25] (helo=ccure.user-mode-linux.org) by sc8-sf-mx1.sourceforge.net with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.30) id 1B2x0V-0006MD-R5 for user-mode-linux-devel@lists.sourceforge.net; Mon, 15 Mar 2004 10:40:12 -0800 From: Jeff Dike Subject: Re: [uml-devel] [PATCH] host context switch reduction Message-ID: <20040315191310.GB23741@ccure.user-mode-linux.org> References: <20040229043549.GA8583@ccure.user-mode-linux.org> <405596A9.4020601@darkman.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <405596A9.4020601@darkman.de> Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Mon, 15 Mar 2004 14:13:10 -0500 To: Sven 'Darkman' Michels Cc: user-mode-linux-devel@lists.sourceforge.net On Mon, Mar 15, 2004 at 12:42:33PM +0100, Sven 'Darkman' Michels wrote: > Well, we just looked at the context switches. We started 3 UMLs which > were doing a make world for xfree. Without patches the number of > context switches per second was around 60k, with the patch it was around > 40k - so it's noticeable, at least from the cs. Sure it's going to have a noticable effect on cs, that's its whole point. However, users don't see cs - they see how quickly things run. I was a bit dismissive of the 3.5% improvement of the kernel build, but if you look at the 20-30% hit that UML takes, that 3.5% is a noticable chunk of it. Jeff ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel