From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261685AbVFVRZA (ORCPT ); Wed, 22 Jun 2005 13:25:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261867AbVFVRX0 (ORCPT ); Wed, 22 Jun 2005 13:23:26 -0400 Received: from opersys.com ([64.40.108.71]:53005 "EHLO www.opersys.com") by vger.kernel.org with ESMTP id S261830AbVFVRVV (ORCPT ); Wed, 22 Jun 2005 13:21:21 -0400 Message-ID: <42B9A0A5.6000703@opersys.com> Date: Wed, 22 Jun 2005 13:32:21 -0400 From: Karim Yaghmour Reply-To: karim@opersys.com Organization: Opersys inc. User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2) Gecko/20040805 Netscape/7.2 X-Accept-Language: en-us, en, fr, fr-be, fr-ca, fr-fr MIME-Version: 1.0 To: Lee Revell CC: paulmck@us.ibm.com, Kristian Benoit , linux-kernel@vger.kernel.org, bhuey@lnxw.com, andrea@suse.de, tglx@linutronix.de, 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 I-PIPE: the numbers, part 2 References: <1119287612.6863.1.camel@localhost> <20050621015542.GB1298@us.ibm.com> <42B77B8C.6050109@opersys.com> <20050622011931.GF1324@us.ibm.com> <42B9845B.8030404@opersys.com> <1119460661.491.31.camel@mindpipe> In-Reply-To: <1119460661.491.31.camel@mindpipe> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Lee Revell wrote: > Ingo, what's the status of putting irq 0 back in a thread with > PREEMPT_RT? IIRC this had some adverse (maybe unfixable?) effects so it > was disabled a few months ago. > > I don't think there's much point in comparing i-pipe to PREEMPT_RT if we > know that 21usec pipeline effect from the timer IRQ (see list archives) > is still there. A link to the archives somewhere would be greatly appreciated, this is a very high traffic list after all... Thanks, Karim -- Author, Speaker, Developer, Consultant Pushing Embedded and Real-Time Linux Systems Beyond the Limits http://www.opersys.com || karim@opersys.com || 1-866-677-4546