Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263323AbUJ2ODt (ORCPT ); Fri, 29 Oct 2004 10:03:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263329AbUJ2ODt (ORCPT ); Fri, 29 Oct 2004 10:03:49 -0400 Received: from out002pub.verizon.net ([206.46.170.141]:27593 "EHLO out002.verizon.net") by vger.kernel.org with ESMTP id S263323AbUJ2ODs (ORCPT ); Fri, 29 Oct 2004 10:03:48 -0400 Message-Id: <200410291403.i9TE3jq3006445@localhost.localdomain> To: Ingo Molnar cc: Thomas Gleixner , LKML , Lee Revell , mark_h_johnson@raytheon.com, Bill Huey , Adam Heath , Florian Schmidt , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Karsten Wiese , jackit-devel , Rui Nuno Capela Subject: Re: [Fwd: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4] In-reply-to: Your message of "Fri, 29 Oct 2004 15:55:30 +0200." <20041029135530.GA22463@elte.hu> Date: Fri, 29 Oct 2004 10:03:45 -0400 From: Paul Davis X-Authentication-Info: Submitted using SMTP AUTH at out002.verizon.net from [141.151.88.122] at Fri, 29 Oct 2004 09:03:47 -0500 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 831 Lines: 18 >> if (poll (driver->pfd, nfds, driver->poll_timeout) < 0) { > >in Rui's test (9 fluidsynth instances running), what would be the value >of nfds - 9 or 1? I.e. is the '9 streams' abstraction provided by jackd, >and you map it to a single alsa driver fd over which you poll, or is >each stream a separate fd? for almost all audio interfaces, there is one fd per hardware device. so whether its a 26 channel device or a simple stereo device, there is one fd. jackd will be polling a single fd in that call under almost all circumstances, and certainly those used in rui's testing. --p - 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/