From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261806AbVFKUOS (ORCPT ); Sat, 11 Jun 2005 16:14:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261807AbVFKUOS (ORCPT ); Sat, 11 Jun 2005 16:14:18 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:14494 "EHLO e3.ny.us.ibm.com") by vger.kernel.org with ESMTP id S261806AbVFKUOM (ORCPT ); Sat, 11 Jun 2005 16:14:12 -0400 Date: Sat, 11 Jun 2005 13:14:22 -0700 From: "Paul E. McKenney" To: Kristian Benoit Cc: linux-kernel@vger.kernel.org, bhuey@lnxw.com, andrea@suse.de, tglx@linutronix.de, karim@opersys.com, mingo@elte.hu, pmarques@grupopie.com, bruce@andrew.cmu.edu, nickpiggin@yahoo.com.au, ak@muc.de, sdietrich@mvista.com, dwalker@mvista.com, hch@infradead.org, akpm@osdl.org, rpm@xenomai.org Subject: Re: PREEMPT_RT vs ADEOS: the numbers, part 1 Message-ID: <20050611201422.GA1299@us.ibm.com> Reply-To: paulmck@us.ibm.com References: <42AA6A6B.5040907@opersys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <42AA6A6B.5040907@opersys.com> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jun 11, 2005 at 12:36:59AM -0400, Kristian Benoit wrote: > For the past few weeks, we've been conducting comparison tests between > PREEMPT_RT and the Adeos nanokernel. As was clear from previous discussion, > we've been open to be proven wrong regarding endorsement of either method. > Hence, this comparison was done in order to better understand the impact > of each method vis-a-vis vanilla Linux. I took a quick look through, and am quite impressed. I have not yet had a chance to go through it carefully (much less read the read of the thread), but wanted to say "thank you!!!" for doing the measurements. I am sure that there will be some, umm, "controversy" over the benchmark and measurement methodology, but getting some agreement on what to measure and how to measure it will be very valuable. My guess is that there will end up being more than one benchmark, given the large variety of RT apps out there, but who knows? Thanx, Paul