From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266591AbUGPU0A (ORCPT ); Fri, 16 Jul 2004 16:26:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266592AbUGPU0A (ORCPT ); Fri, 16 Jul 2004 16:26:00 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:3987 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S266591AbUGPUZ4 (ORCPT ); Fri, 16 Jul 2004 16:25:56 -0400 Subject: Re: [linux-audio-user] 2.6.8-rc1-mm1 [and alsa xrun debugging] From: Lee Revell To: A list for linux audio users Cc: Andrew Morton , tiwai@suse.de, linux-kernel , linux-audio-dev@music.columbia.edu In-Reply-To: <20040716185123.2e3899bf@mango.fruits.de> References: <20040716162510.7bac6a7c@mango.fruits.de> <200407161654.28004.eseol@tiscali.co.uk> <20040716185123.2e3899bf@mango.fruits.de> Content-Type: text/plain Message-Id: <1090009565.27995.26.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Fri, 16 Jul 2004 16:26:05 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2004-07-16 at 12:51, Florian Schmidt wrote: > On Fri, 16 Jul 2004 16:54:28 +0100 > David M wrote: > > > I think you have to echo 2 > /proc/asound/card0/etc > > > > On debian they are in /var/log/messages,var/log/syslog , and a few other > > places. > > oh ok, that works.. i'll also enable frame pointers in the kernel. but for now, here's some of the xruns i can provoke by rapid desktop wheeling [though kernel still w/o rame pointers]: > > > Jul 16 18:47:31 mango kernel: [] do_IRQ+0x91/0x130 > Jul 16 18:47:31 mango kernel: [] common_interrupt+0x18/0x20 > Jul 16 18:47:32 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c > Jul 16 18:47:32 mango kernel: [] snd_pcm_period_elapsed+0x2e7/0x460 [snd_pcm] > Jul 16 18:47:32 mango kernel: [] _nv000897rm+0x4e/0x70 [nvidia] > Jul 16 18:47:32 mango kernel: [] snd_cs46xx_interrupt+0x1be/0x1f0 [snd_cs46xx] > Jul 16 18:47:32 mango kernel: [] nv_kern_isr+0x26/0x59 [nvidia] > Jul 16 18:47:32 mango kernel: [] handle_IRQ_event+0x3a/0x70 > Jul 16 18:47:32 mango kernel: [] do_IRQ+0x91/0x130 > Jul 16 18:47:32 mango kernel: [] common_interrupt+0x18/0x20 Are you using the binary-only NVIDIA module? If your kernel is tainted (by having a binary-only module loaded), then you cannot get valid data. > Jul 16 18:49:04 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c > Jul 16 18:49:04 mango kernel: [] snd_pcm_period_elapsed+0x2e7/0x460 [snd_pcm] > Jul 16 18:49:04 mango kernel: [] snd_cs46xx_interrupt+0x1be/0x1f0 [snd_cs46xx] > Jul 16 18:49:04 mango kernel: [] handle_signal+0xb7/0x120 > Jul 16 18:49:04 mango kernel: [] handle_IRQ_event+0x3a/0x70 > Jul 16 18:49:04 mango kernel: [] do_IRQ+0x91/0x130 > Jul 16 18:49:04 mango kernel: [] common_interrupt+0x18/0x20 > Jul 16 18:49:04 mango kernel: [] __do_softirq+0x30/0x80 > Jul 16 18:49:04 mango kernel: [] do_softirq+0x26/0x30 > Jul 16 18:49:04 mango kernel: [] do_IRQ+0xfd/0x130 > Jul 16 18:49:04 mango kernel: [] common_interrupt+0x18/0x20 > Jul 16 18:49:04 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0p > Jul 16 18:49:04 mango kernel: [] snd_pcm_period_elapsed+0x2e7/0x460 [snd_pcm] > Jul 16 18:49:04 mango kernel: [] update_process_times+0x46/0x60 > Jul 16 18:49:04 mango kernel: [] snd_cs46xx_interrupt+0x1be/0x1f0 [snd_cs46xx] > Jul 16 18:49:04 mango kernel: [] do_timer+0xdf/0xf0 > Jul 16 18:49:04 mango kernel: [] timer_interrupt+0xb8/0x140 > Jul 16 18:49:04 mango kernel: [] handle_IRQ_event+0x3a/0x70 > Jul 16 18:49:04 mango kernel: [] do_IRQ+0x91/0x130 > Jul 16 18:49:04 mango kernel: [] common_interrupt+0x18/0x20 > Jul 16 18:49:04 mango kernel: [] __do_softirq+0x30/0x80 > Jul 16 18:49:04 mango kernel: [] do_softirq+0x26/0x30 > Jul 16 18:49:04 mango kernel: [] do_IRQ+0xfd/0x130 > Jul 16 18:49:04 mango kernel: [] common_interrupt+0x18/0x20 Takashi Iwai mentioned there were some patches available to daemonize softirq processing, and that these might help. Takashi, can you provide some details on this? > Jul 16 18:49:05 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c > Jul 16 18:49:05 mango kernel: [] snd_pcm_period_elapsed+0x2e7/0x460 [snd_pcm] > Jul 16 18:49:05 mango kernel: [] unix_stream_sendmsg+0x269/0x3e0 > Jul 16 18:49:05 mango kernel: [] snd_cs46xx_interrupt+0x1be/0x1f0 [snd_cs46xx] > Jul 16 18:49:05 mango kernel: [] handle_IRQ_event+0x3a/0x70 > Jul 16 18:49:05 mango kernel: [] do_IRQ+0x91/0x130 > Jul 16 18:49:05 mango kernel: [] common_interrupt+0x18/0x20 > Jul 16 18:49:05 mango kernel: [] finish_task_switch+0x2b/0x90 > Jul 16 18:49:05 mango kernel: [] schedule+0x2cf/0x560 > Jul 16 18:49:05 mango kernel: [] schedule_timeout+0x63/0xc0 > Jul 16 18:49:05 mango kernel: [] process_timeout+0x0/0x10 > Jul 16 18:49:05 mango kernel: [] do_select+0x18f/0x2d0 > Jul 16 18:49:05 mango kernel: [] __pollwait+0x0/0xd0 > Jul 16 18:49:05 mango kernel: [] sys_select+0x2bf/0x4c0 > Jul 16 18:49:05 mango kernel: [] vfs_read+0x10b/0x140 > Jul 16 18:49:05 mango kernel: [] syscall_call+0x7/0xb This one I am seeing too. I do not have a good explanation for it yet. Lee