Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751272AbVJUX3Y (ORCPT ); Fri, 21 Oct 2005 19:29:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751273AbVJUX3Y (ORCPT ); Fri, 21 Oct 2005 19:29:24 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:23170 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S1751272AbVJUX3X (ORCPT ); Fri, 21 Oct 2005 19:29:23 -0400 Subject: Re: 2.6.14-rc5-rt3 - `IRQ 8'[798] is being piggy From: Lee Revell To: Mark Knecht Cc: linux-kernel@vger.kernel.org, Ingo Molnar In-Reply-To: <5bdc1c8b0510211525v62212d33j84491cfc687bd200@mail.gmail.com> References: <5bdc1c8b0510211003j4e9bf03bhf1ea8e94ffe60153@mail.gmail.com> <5bdc1c8b0510211040s40f3f9bbj7f83e174d7b6d937@mail.gmail.com> <1129920323.17709.2.camel@mindpipe> <5bdc1c8b0510211152m592d95cfte57dc7e9b027f87a@mail.gmail.com> <1129923883.17709.11.camel@mindpipe> <5bdc1c8b0510211525v62212d33j84491cfc687bd200@mail.gmail.com> Content-Type: text/plain Date: Fri, 21 Oct 2005 19:28:37 -0400 Message-Id: <1129937318.4724.6.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.4.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1257 Lines: 33 On Fri, 2005-10-21 at 15:25 -0700, Mark Knecht wrote: > > > > No I don't think so. CONFIG_RTC_HISTOGRAM is a hack, designed to work > > with a specific test program that runs SCHED_FIFO and poll()s on the > > RTC. VLC apparently poll()s on the RTC but does not run SCHED_FIFO. So > > of course there will be delays. > Lee, > Indeed, you are correct. Apparently under character devices I had > turned on the RTC histogram feature. With that off I am not only > getting the maximum latency values we expect. > > Now I'll have to let it run for hours/days to see if I catch any > info on these xruns, should I get another rash of them. Yesterday they > came only after about 14 hours of work. I had none the previous two > days. In general you should avoid enabling/disabling random config options between runs. If you keep changing the .config it makes it impossible to hunt bugs or compare one set of results to another. The easiest way is to do: zcat /proc/config.gz > .config make oldconfig Lee - 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/