From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261402AbVFJXPk (ORCPT ); Fri, 10 Jun 2005 19:15:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261449AbVFJXPQ (ORCPT ); Fri, 10 Jun 2005 19:15:16 -0400 Received: from e32.co.us.ibm.com ([32.97.110.130]:13481 "EHLO e32.co.us.ibm.com") by vger.kernel.org with ESMTP id S261430AbVFJXMg (ORCPT ); Fri, 10 Jun 2005 19:12:36 -0400 Date: Fri, 10 Jun 2005 16:12:58 -0700 From: "Paul E. McKenney" To: Lee Revell Cc: Tim Bird , 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 Subject: Re: Attempted summary of "RT patch acceptance" thread Message-ID: <20050610231258.GJ1300@us.ibm.com> Reply-To: paulmck@us.ibm.com References: <20050608022646.GA3158@us.ibm.com> <42A8D1F3.8070408@am.sony.com> <20050609235026.GE1297@us.ibm.com> <1118372388.32270.6.camel@mindpipe> <20050610154745.GA1300@us.ibm.com> <1118435904.6423.40.camel@mindpipe> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1118435904.6423.40.camel@mindpipe> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 10, 2005 at 04:38:24PM -0400, Lee Revell wrote: > On Fri, 2005-06-10 at 08:47 -0700, Paul E. McKenney wrote: > > > Does the LTP include an RT latency test yet? > > > > Not as far as I know. I believe that LTP contains primarily pass-fail > > rather than performance tests, but regardless of where RT latency > > tests live, I believe that there needs to be a good home for them. > > Maybe I didn't mean LTP, I'm thinking of whatever that popular benchmark > suite is that people use to identify performance regressions. OSDL > something or other? > > The canonical test is "rtc_wakeup", it just sets up a stream of > interrupts from the RTC, polls on it and measures the delay. Check the > list archives for the URL. OK, http://affenbande.org/~tapas/rtc_wakeup/ is the URL, right? And LTP might well be a good home for it, I honestly don't know. I am checking to see if this can be added to the set of tests run in Martin's automated testing. If you haven't looked at this, check out: http://www.kernel.org/pub/linux/kernel/people/mbligh/abat/regression_matrix.html This doesn't cover all the various RT variants of Linux, but might focus some attention on mainline latency issues. Thanx, Paul