Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751351AbVJFUif (ORCPT ); Thu, 6 Oct 2005 16:38:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751352AbVJFUif (ORCPT ); Thu, 6 Oct 2005 16:38:35 -0400 Received: from xproxy.gmail.com ([66.249.82.200]:8026 "EHLO xproxy.gmail.com") by vger.kernel.org with ESMTP id S1751351AbVJFUie convert rfc822-to-8bit (ORCPT ); Thu, 6 Oct 2005 16:38:34 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=n40X09SlhT5WxEKzv4dkKqTZjvu2pB+zM+Y8vXwhBoOnao8wKVlzmtTSIueKdP805KgT43nMgxgZGKHCuXMRjepHrEwOdw8qp0jJScER0erzQKLujZtcAh4McIgNDRNomTfug4UETblO5OCWT6W7svfSCxmu5EENly1p4l+u0sU= Message-ID: <5bdc1c8b0510061338r41e0b51ds2efd435a591d953e@mail.gmail.com> Date: Thu, 6 Oct 2005 13:38:33 -0700 From: Mark Knecht Reply-To: Mark Knecht To: Ingo Molnar Subject: Re: 2.6.14-rc3-rt10 - xruns & config questions Cc: linux-kernel@vger.kernel.org In-Reply-To: <5bdc1c8b0510061307saf22655y26dd1e608b33a40c@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <5bdc1c8b0510061152o686c5774x2d0514a1f1b4e463@mail.gmail.com> <20051006195242.GA15448@elte.hu> <5bdc1c8b0510061307saf22655y26dd1e608b33a40c@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1482 Lines: 45 On 10/6/05, Mark Knecht wrote: > On 10/6/05, Ingo Molnar wrote: > > > > * Mark Knecht wrote: > > > > > I am still getting a few xruns even after raising Jack's priority > > > level to 80. I am wondering whether it's fair to report these when I > > > have CONFIG_DEBUG_PREEMPT set? > > > > > 4559 78 38 [IRQ 58] > > > > > 58: 257570 IO-APIC-level hdsp > > > > IRQ 58 is your audio interrupt, right? You should raise that one to prio > > 80 too. (via chrt) > > > > > Since my NIC is getting a higher priority than both my sound card and > > > my 1394 audio drives (IRQ217 vs. IRQ58/IRQ66) I assume that network > > > activity might possibly sometimes cause a problem? Or is this not > > > true? > > > > yeah, that could be the case. > > > > Can you suggest how I might be able to do this at boot time? Apologies for answering myself... I found an old conversation that answered this, at least when I'm logged in as root. Hopefully it will work at boot time also: chrt -f -p 80 `pidof "IRQ 58"` I noted that the default chrt command changed the IRQ process from SCHED_FIFO to SCHED_RR so I assume I really should leave it at SCHED_FIFO? Thanks, Mark - 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/