Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262059AbVATF64 (ORCPT ); Thu, 20 Jan 2005 00:58:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262060AbVATF6z (ORCPT ); Thu, 20 Jan 2005 00:58:55 -0500 Received: from mail10.syd.optusnet.com.au ([211.29.132.191]:35225 "EHLO mail10.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S262059AbVATF6n (ORCPT ); Thu, 20 Jan 2005 00:58:43 -0500 Message-ID: <41EF48BA.50709@kolivas.org> Date: Thu, 20 Jan 2005 16:59:22 +1100 From: Con Kolivas User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Jack O'Quin" Cc: linux , Ingo Molnar , rlrevell@joe-job.com, paul@linuxaudiosystems.com, CK Kernel , utz , Andrew Morton , alexn@dsv.su.se, Rui Nuno Capela Subject: Re: [PATCH]sched: Isochronous class v2 for unprivileged soft rt scheduling References: <41EEE1B1.9080909@kolivas.org> <41EF00ED.4070908@kolivas.org> <873bwwga0w.fsf@sulphur.joq.us> <41EF123D.703@kolivas.org> <87ekgges2o.fsf@sulphur.joq.us> <41EF2E7E.8070604@kolivas.org> <87oefkd7ew.fsf@sulphur.joq.us> In-Reply-To: <87oefkd7ew.fsf@sulphur.joq.us> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1071 Lines: 27 Jack O'Quin wrote: > If I look at those png's locally (with gimp or gqview) they have a > dark grey checkerboard background. If I look at them on the web (with > galeon), the background is white. Go figure. Maybe the file has no > background? I dunno. Yes there's no background so it depends on what you look at it with. Gene already pointed out the checkered background in gimp :) > I was misreading the x-axis. They're actually every 20 sec. My > system isn't doing that. Possibly reiserfs journal related. That has larger non-preemptible code sections. > You're really getting hammered with those periodic 6 msec delays, > though. The basic audio cycle is only 1.45 msec. As you've already pointed out, though, they occur even with SCHED_FIFO so I'm certain it's an artefact unrelated to cpu scheduling. Con - 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/