Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263352AbUJ2OiU (ORCPT ); Fri, 29 Oct 2004 10:38:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263341AbUJ2OfU (ORCPT ); Fri, 29 Oct 2004 10:35:20 -0400 Received: from mx1.elte.hu ([157.181.1.137]:10208 "EHLO mx1.elte.hu") by vger.kernel.org with ESMTP id S263339AbUJ2Oad (ORCPT ); Fri, 29 Oct 2004 10:30:33 -0400 Date: Fri, 29 Oct 2004 16:31:34 +0200 From: Ingo Molnar To: Paul Davis Cc: linux-kernel@vger.kernel.org, Lee Revell , mark_h_johnson@raytheon.com, Bill Huey , Adam Heath , Florian Schmidt , Thomas Gleixner , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Karsten Wiese , jackit-devel Subject: Re: [Fwd: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4] Message-ID: <20041029143134.GA27343@elte.hu> References: <20041029134820.GA21746@elte.hu> <200410291419.i9TEJD75006459@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200410291419.i9TEJD75006459@localhost.localdomain> 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, autolearn=not spam, 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: 1143 Lines: 28 * Paul Davis wrote: > (c) the audio interface doesn't interrupt independently for > capture and playback. Rui will need to get back > to me with details on what type of audio interface > he is using for me to comment on this. If its > a consumer device with poor support for full > duplex operation, then it can happen that > capture and playback streams are running out > of sync and this can cause some odd timing. here's Rui's setup: | Note: all tests were carried out running jackd -v -dalsa -dhw:0 | -r44100 -p128 -n2 -S -P, loaded with 9 (nine) fluidsynth instances, | on a P4@2.533Ghz laptop, against the onboard sound device | (snd-ali5451). i suspect this means there was playback only, no capture, and thus the capture/playback interrupt interaction cannot be the case, right? 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/