From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pete Subject: Re: Xrun stack trace for 1010LT Date: Fri, 5 Dec 2008 07:20:27 -0800 (PST) Message-ID: <227999.32830.qm@web65402.mail.ac4.yahoo.com> References: <20081205151709.GA3160@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from web65402.mail.ac4.yahoo.com (web65402.mail.ac4.yahoo.com [76.13.9.22]) by alsa0.perex.cz (Postfix) with SMTP id 7E16E24531 for ; Fri, 5 Dec 2008 16:20:28 +0100 (CET) In-Reply-To: <20081205151709.GA3160@localhost> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: John Rigg Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org John thanks, I spoke to you about 2 weeks ago about this and have been trying the various tweaks you suggested. But so far I have found no configs which have worked flawlessly, although one config had it down to about one xrun every 20 mins or so average. Thing is I am after capturing live gigs, which you dont get a second chance with. Although I suspect a small xrun would be easy to disguise but its not ideal. So I am trying to hunt down the elusive 'perfection' config. Its interesting that when I comment out the actual write call in arecord, there are no xruns. Tonight I will try the exact config you mention below. I suspect that the problem I am getting might be related to the hardware I am on though, which does not have much in the way of configurable bios. Perhaps something should be turned off which I can not access through this basic bios. Anyway on discovering the stack trace system it was obvious that I must get it working so if it works under a non RT kernel thats where I will go next. Although it would be nice if someone could tell me a tool which would work with the RT kernel as it does interest me what could be screwing up this supposedly real time system, just from a technical interest point of view. John Rigg wrote: On Fri, Dec 05, 2008 at 06:48:43AM -0800, Pete cat wrote: > I understand. Im only a fairly basic C coder and such, so could you > recommend a tool which is fairly easy to use? Or would it be better > to revert to a non RT kernel (there did not seem to be much improvement > when I moved to the RT kernel)? FWIW I've never been able to run an RT-patched kernel with pcm_multi. I've been using a non-rt preempt SMP kernel with three Delta 1010s for about three years now without too many problems, currently with alsa-lib-1.0.16 and 2.6.25.x kernel. John _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel