From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Schwebel Subject: Re: RT example Date: Thu, 25 Jan 2007 08:01:33 +0100 Message-ID: <20070125070133.GY28808@pengutronix.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Cc: linux-rt-users@vger.kernel.org To: Junior Return-path: Received: from metis.extern.pengutronix.de ([83.236.181.26]:59032 "EHLO metis.extern.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965575AbXAYHBe (ORCPT ); Thu, 25 Jan 2007 02:01:34 -0500 Content-Disposition: inline In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org On Wed, Jan 24, 2007 at 10:58:41AM -0800, Junior wrote: > Does anyone have example code using the PREEMPT_RT patch? You could for example start with cyclictest. It is also a good example for how to write cyclic realtime programs on Linux. > I've installed the patch for 2.6.18 and notice I'm actually runiing > slower that without the patch. I'm pretty sure it's something I'm > doing or not doing and an example or some other docs should be enough > to get me started. Note that realtime is not about running fast, but running "in time". That may often mean that the overall system performance goes down. > PS. I'm using an ARM9 platform Do you have clocksource/clockevent support for your ARM9 chip? Robert -- Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Hannoversche Str. 2, 31134 Hildesheim, Germany Phone: +49-5121-206917-0 | Fax: +49-5121-206917-9