From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Rigg Subject: Re: jerks Date: Thu, 8 Dec 2005 19:31:38 +0000 Message-ID: <20051208193138.GA4312@localhost.localdomain> References: <1134063707.13439.37.camel@snuk.slsware.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail3.uklinux.net (mail3.uklinux.net [80.84.72.33]) by alsa.jcu.cz (ALSA's E-mail Delivery System) with ESMTP id BD7C4170 for ; Thu, 8 Dec 2005 20:22:53 +0100 (MET) Content-Disposition: inline In-Reply-To: <1134063707.13439.37.camel@snuk.slsware.lan> Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Glenn English Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On Thu, Dec 08, 2005 at 10:41:47AM -0700, Glenn English wrote: > I'm trying to make a Digital Audio Workstation (DAW) out of a SUN W2100z > (dual AMD64). > > Every few seconds, at seemingly random times, everything freezes for > ~50ms. Even the mouse. Sometimes. Reliable at the first card moved in > Aisle Riot Solitaire and when Jack is running. Often when I'm typing > email (chars don't get from the keyboard to the screen). > > I know that's not much of a description, but I don't know where to start > looking for this. I'm assuming interrupts are being disabled entirely > momentarily. My background says it's time for a bus monitor, but I don't > have one handy. > > This happens with a 2.6 kernel from the current updated Sarge or a 2.4 > from DeMuDi 1.2.1 distro. Could this be the libc NPTL bug? Sarge has a buggy version of glibc with a broken NPTL implementation (don't know about DeMuDi 1.2.1). If so, threaded apps won't perform properly - I switched to sid for this reason. Workaround is to set LD_ASSUME_KERNEL=2.4.22 for jackd and other audio apps. In sid it's fixed, and you'll also get the extra benefits of gcc-4.0's better AMD64 optimisation. John ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click