Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262482AbUJ0PRT (ORCPT ); Wed, 27 Oct 2004 11:17:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262491AbUJ0PRS (ORCPT ); Wed, 27 Oct 2004 11:17:18 -0400 Received: from mx2.elte.hu ([157.181.151.9]:39855 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S262482AbUJ0PQS (ORCPT ); Wed, 27 Oct 2004 11:16:18 -0400 Date: Wed, 27 Oct 2004 17:17:01 +0200 From: Ingo Molnar To: Lee Revell Cc: "K.R. Foley" , linux-kernel@vger.kernel.org, Rui Nuno Capela , Mark_H_Johnson@Raytheon.com, Bill Huey , Adam Heath , Florian Schmidt , Thomas Gleixner , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Andrew Morton Subject: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0 Message-ID: <20041027151701.GA11736@elte.hu> References: <20041025104023.GA1960@elte.hu> <417D4B5E.4010509@cybsft.com> <20041025203807.GB27865@elte.hu> <417E2CB7.4090608@cybsft.com> <20041027002455.GC31852@elte.hu> <417F16BB.3030300@cybsft.com> <20041027132926.GA7171@elte.hu> <417FB7F0.4070300@cybsft.com> <20041027150548.GA11233@elte.hu> <1098889994.1448.14.camel@krustophenia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1098889994.1448.14.camel@krustophenia.net> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 936 Lines: 28 * Lee Revell wrote: > > ah, ok - nice. So rtc-debug+amlat is the only known-reliable way to > > produce latency histograms? > > > > Yes, I think it is the most reliable way because the measurement is > done in the kernel. At least, this is what AM's notes say. There are > any number of ways to generate these with userspace programs (jackd, > realfeel, etc). > > Here is a more up to date version of the rtc-debug patch: > > http://lkml.org/lkml/2004/9/9/307 > > There is still a bit of 2.4 cruft in there but it works well. Maybe > this could be included in future patches. the most natural point of inclusion would be Andrew's -mm tree i think :-) Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/