16 Jul
2004
16 Jul
'04
12:27 p.m.
after reading lee's email i had to try this kernel.. so i went over to
www.de.kernel.org, grabbed 2.6.8-rc1 and patched it up with this patch:
http://www.ussg.iu.edu/hypermail/linux/kernel/0407.1/1453.html
On first sight it looks very good. many of the sporadic xruns i experienced with jack in
RT mode are gone. even a "find /" parallel to a "make bzImage" seems
not to provoke any xruns [i use ext3]. But: i use fluxbox and it supports desktop wheeling
[switching desktop via scrollwheel - very handy] and doing this excessively and rapidly
provokes xruns easily. Also starting mozilla just provoked an xrun..
Well to provie more detailed info i thought i'd turn on xrun tracing. So here are the
steps i took:
1] enabled debugging in the alsa drivers [i did that when i built the 2.6.8rc1mm1 kernel
and the included alsa modules.
2] mango:/home/tapas# echo 1 > /proc/asound/card0/pcm0p/xrun_debug
mango:/home/tapas# echo 1 > /proc/asound/card0/pcm0c/xrun_debug
3] started jackd -R -d alsa -p 512 and provoked xruns, but the traces are nowhere to be
found.. where should i look? /var/log/messages - nothin; /var/log/debug - nothing;
/var/log/dmesg - nothing.. Maybe i'm just stooopid here.. Please enlighten me.
Thanks,
Flo
--
Palimm Palimm!
Sounds/Ware:
http://affenbande.org/~tapas/
16 Jul
16 Jul
1:56 p.m.
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.
On Friday 16 July 2004 15:25, Florian Schmidt wrote:
after reading lee's email i had to try this
kernel.. so i went over to
www.de.kernel.org, grabbed 2.6.8-rc1 and patched it up with this patch:
http://www.ussg.iu.edu/hypermail/linux/kernel/0407.1/1453.html
On first sight it looks very good. many of the sporadic xruns i experienced
with jack in RT mode are gone. even a "find /" parallel to a "make
bzImage"
seems not to provoke any xruns [i use ext3]. But: i use fluxbox and it
supports desktop wheeling [switching desktop via scrollwheel - very handy]
and doing this excessively and rapidly provokes xruns easily. Also starting
mozilla just provoked an xrun..
Well to provie more detailed info i thought i'd turn on xrun tracing. So
here are the steps i took:
1] enabled debugging in the alsa drivers [i did that when i built the
2.6.8rc1mm1 kernel and the included alsa modules.
2] mango:/home/tapas# echo 1 > /proc/asound/card0/pcm0p/xrun_debug
mango:/home/tapas# echo 1 > /proc/asound/card0/pcm0c/xrun_debug
3] started jackd -R -d alsa -p 512 and provoked xruns, but the traces are
nowhere to be found.. where should i look? /var/log/messages - nothin;
/var/log/debug - nothing; /var/log/dmesg - nothing.. Maybe i'm just
stooopid here.. Please enlighten me.
Thanks,
Flo
2:53 p.m.
On Fri, 16 Jul 2004 16:54:28 +0100
David M <eseol(a)tiscali.co.uk> 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: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:47:31 mango kernel: [<c0105be4>] 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: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:47:32 mango kernel: [<f0bc232e>] _nv000897rm+0x4e/0x70 [nvidia]
Jul 16 18:47:32 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:47:32 mango kernel: [<f0d28962>] nv_kern_isr+0x26/0x59 [nvidia]
Jul 16 18:47:32 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:47:32 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:47:32 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:48:58 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:48:58 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:48:58 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:48:58 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:48:58 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:48:58 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:48:58 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0p
Jul 16 18:48:58 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:48:58 mango kernel: [<c01da594>] _mmx_memcpy+0x34/0x170
Jul 16 18:48:58 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:48:58 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:48:58 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:48:58 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:48:59 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:48:59 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:48:59 mango kernel: [<c011e1c6>] update_process_times+0x46/0x60
Jul 16 18:48:59 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:48:59 mango kernel: [<c011e4bf>] do_timer+0xdf/0xf0
Jul 16 18:48:59 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:48:59 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:48:59 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:03 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:49:03 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:03 mango kernel: [<c011e1c6>] update_process_times+0x46/0x60
Jul 16 18:49:03 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:03 mango kernel: [<c011e4bf>] do_timer+0xdf/0xf0
Jul 16 18:49:03 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:03 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:03 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:04 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:49:04 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:04 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:04 mango kernel: [<c0105737>] handle_signal+0xb7/0x120
Jul 16 18:49:04 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:04 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:04 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:04 mango kernel: [<c011a2f0>] __do_softirq+0x30/0x80
Jul 16 18:49:04 mango kernel: [<c011a366>] do_softirq+0x26/0x30
Jul 16 18:49:04 mango kernel: [<c01077cd>] do_IRQ+0xfd/0x130
Jul 16 18:49:04 mango kernel: [<c0105be4>] 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: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:04 mango kernel: [<c011e1c6>] update_process_times+0x46/0x60
Jul 16 18:49:04 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:04 mango kernel: [<c011e4bf>] do_timer+0xdf/0xf0
Jul 16 18:49:04 mango kernel: [<c010b378>] timer_interrupt+0xb8/0x140
Jul 16 18:49:04 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:04 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:04 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:04 mango kernel: [<c011a2f0>] __do_softirq+0x30/0x80
Jul 16 18:49:04 mango kernel: [<c011a366>] do_softirq+0x26/0x30
Jul 16 18:49:04 mango kernel: [<c01077cd>] do_IRQ+0xfd/0x130
Jul 16 18:49:04 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:05 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:49:05 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:05 mango kernel: [<c028d579>] unix_stream_sendmsg+0x269/0x3e0
Jul 16 18:49:05 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:05 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:05 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:05 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:05 mango kernel: [<c0112cab>] finish_task_switch+0x2b/0x90
Jul 16 18:49:05 mango kernel: [<c0290e4f>] schedule+0x2cf/0x560
Jul 16 18:49:05 mango kernel: [<c02915e3>] schedule_timeout+0x63/0xc0
Jul 16 18:49:05 mango kernel: [<c011e5b0>] process_timeout+0x0/0x10
Jul 16 18:49:05 mango kernel: [<c015faaf>] do_select+0x18f/0x2d0
Jul 16 18:49:05 mango kernel: [<c015f770>] __pollwait+0x0/0xd0
Jul 16 18:49:05 mango kernel: [<c015fedf>] sys_select+0x2bf/0x4c0
Jul 16 18:49:05 mango kernel: [<c014c30b>] vfs_read+0x10b/0x140
Jul 16 18:49:05 mango kernel: [<c0105a77>] syscall_call+0x7/0xb
Jul 16 18:49:05 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0p
Jul 16 18:49:05 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:05 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:05 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:05 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:05 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:05 mango kernel: [<c011a2f0>] __do_softirq+0x30/0x80
Jul 16 18:49:05 mango kernel: [<c011a366>] do_softirq+0x26/0x30
Jul 16 18:49:05 mango kernel: [<c01077cd>] do_IRQ+0xfd/0x130
Jul 16 18:49:05 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:06 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:49:06 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:06 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:06 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:06 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:06 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:07 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:49:07 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:07 mango kernel: [<c011e1c6>] update_process_times+0x46/0x60
Jul 16 18:49:07 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:07 mango kernel: [<c011e4bf>] do_timer+0xdf/0xf0
Jul 16 18:49:07 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:07 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:07 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:07 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0p
Jul 16 18:49:07 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:07 mango kernel: [<c0231f79>] serio_interrupt+0x69/0x97
Jul 16 18:49:07 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:07 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:07 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:07 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:08 mango kernel: ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:49:08 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:08 mango kernel: [<c011e1c6>] update_process_times+0x46/0x60
Jul 16 18:49:08 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:08 mango kernel: [<c011e4bf>] do_timer+0xdf/0xf0
Jul 16 18:49:08 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:08 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:08 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
--
Palimm Palimm!
Sounds/Ware:
http://affenbande.org/~tapas/
6:35 p.m.
On Fri, 2004-07-16 at 12:51, Florian Schmidt wrote:
On Fri, 16 Jul 2004 16:54:28 +0100
David M <eseol(a)tiscali.co.uk> wrote:
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.
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: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:47:31 mango kernel: [<c0105be4>] 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: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:47:32 mango kernel: [<f0bc232e>] _nv000897rm+0x4e/0x70 [nvidia]
Jul 16 18:47:32 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:47:32 mango kernel: [<f0d28962>] nv_kern_isr+0x26/0x59 [nvidia]
Jul 16 18:47:32 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:47:32 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:47:32 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20 Jul 16 18:49:04 mango kernel: ALSA
sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Jul 16 18:49:04 mango kernel: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:04 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:04 mango kernel: [<c0105737>] handle_signal+0xb7/0x120
Jul 16 18:49:04 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:04 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:04 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:04 mango kernel: [<c011a2f0>] __do_softirq+0x30/0x80
Jul 16 18:49:04 mango kernel: [<c011a366>] do_softirq+0x26/0x30
Jul 16 18:49:04 mango kernel: [<c01077cd>] do_IRQ+0xfd/0x130
Jul 16 18:49:04 mango kernel: [<c0105be4>] 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: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:04 mango kernel: [<c011e1c6>] update_process_times+0x46/0x60
Jul 16 18:49:04 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:04 mango kernel: [<c011e4bf>] do_timer+0xdf/0xf0
Jul 16 18:49:04 mango kernel: [<c010b378>] timer_interrupt+0xb8/0x140
Jul 16 18:49:04 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:04 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:04 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:04 mango kernel: [<c011a2f0>] __do_softirq+0x30/0x80
Jul 16 18:49:04 mango kernel: [<c011a366>] do_softirq+0x26/0x30
Jul 16 18:49:04 mango kernel: [<c01077cd>] do_IRQ+0xfd/0x130
Jul 16 18:49:04 mango kernel: [<c0105be4>] 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: [<f08c0357>] snd_pcm_period_elapsed+0x2e7/0x460
[snd_pcm]
Jul 16 18:49:05 mango kernel: [<c028d579>] unix_stream_sendmsg+0x269/0x3e0
Jul 16 18:49:05 mango kernel: [<f08edb8e>] snd_cs46xx_interrupt+0x1be/0x1f0
[snd_cs46xx]
Jul 16 18:49:05 mango kernel: [<c01073fa>] handle_IRQ_event+0x3a/0x70
Jul 16 18:49:05 mango kernel: [<c0107761>] do_IRQ+0x91/0x130
Jul 16 18:49:05 mango kernel: [<c0105be4>] common_interrupt+0x18/0x20
Jul 16 18:49:05 mango kernel: [<c0112cab>] finish_task_switch+0x2b/0x90
Jul 16 18:49:05 mango kernel: [<c0290e4f>] schedule+0x2cf/0x560
Jul 16 18:49:05 mango kernel: [<c02915e3>] schedule_timeout+0x63/0xc0
Jul 16 18:49:05 mango kernel: [<c011e5b0>] process_timeout+0x0/0x10
Jul 16 18:49:05 mango kernel: [<c015faaf>] do_select+0x18f/0x2d0
Jul 16 18:49:05 mango kernel: [<c015f770>] __pollwait+0x0/0xd0
Jul 16 18:49:05 mango kernel: [<c015fedf>] sys_select+0x2bf/0x4c0
Jul 16 18:49:05 mango kernel: [<c014c30b>] vfs_read+0x10b/0x140
Jul 16 18:49:05 mango kernel: [<c0105a77>] syscall_call+0x7/0xb
This one I am seeing too. I do not have a good explanation for it yet.
Lee
6:18 p.m.
On Fri, 2004-07-16 at 10:25, Florian Schmidt wrote:
after reading lee's email i had to try this
kernel.. so i went over to www.de.kernel.org, grabbed 2.6.8-rc1 and patched it up with
this patch:
http://www.ussg.iu.edu/hypermail/linux/kernel/0407.1/1453.html
On first sight it looks very good. many of the sporadic xruns i experienced with jack in
RT mode are gone. even a "find /" parallel to a "make bzImage" seems
not to provoke any xruns [i use ext3]. But: i use fluxbox and it supports desktop wheeling
[switching desktop via scrollwheel - very handy] and doing this excessively and rapidly
provokes xruns easily. Also starting mozilla just provoked an xrun..
Well to provie more detailed info i thought i'd turn on xrun tracing. So here are the
steps i took:
1] enabled debugging in the alsa drivers [i did that when i built the 2.6.8rc1mm1 kernel
and the included alsa modules.
2] mango:/home/tapas# echo 1 > /proc/asound/card0/pcm0p/xrun_debug
mango:/home/tapas# echo 1 > /proc/asound/card0/pcm0c/xrun_debug
3] started jackd -R -d alsa -p 512 and provoked xruns, but the traces are nowhere to be
found.. where should i look? /var/log/messages - nothin; /var/log/debug - nothing;
/var/log/dmesg - nothing.. Maybe i'm just stooopid here.. Please enlighten me.
Thanks,
Flo
You have to echo 2 > /proc/foo/xrun_debug. Then, if you produce an
XRUN, dmesg should contain a stack trace.
Lee
6:25 p.m.
On Fri, 2004-07-16 at 10:25, Florian Schmidt wrote:
after reading lee's email i had to try this
kernel.. so i went over to www.de.kernel.org, grabbed 2.6.8-rc1 and patched it up with
this patch:
http://www.ussg.iu.edu/hypermail/linux/kernel/0407.1/1453.html
On first sight it looks very good. many of the sporadic xruns i experienced
with jack in RT mode are gone. even a "find /" parallel to a "make
bzImage"
seems not to provoke any xruns [i use ext3]. But: i use fluxbox and it supports
desktop wheeling [switching desktop via scrollwheel - very handy] and doing this
excessively and rapidly provokes xruns easily. Also starting mozilla just provoked
an xrun..
Try the included patch. Andrew Morton suggested this, and it works
great for me, but it is not in -mm1.
Lee
--- drivers/char/tty_io.c_orig 2004-07-16 16:10:11.000000000 -0400
+++ drivers/char/tty_io.c 2004-07-16 16:10:31.000000000 -0400
@@ -679,17 +679,13 @@
return -ERESTARTSYS;
}
if ( test_bit(TTY_NO_WRITE_SPLIT, &tty->flags) ) {
- lock_kernel();
written = write(tty, file, buf, count);
- unlock_kernel();
} else {
for (;;) {
unsigned long size = max((unsigned long)PAGE_SIZE*2, 16384UL);
if (size > count)
size = count;
- lock_kernel();
ret = write(tty, file, buf, size);
- unlock_kernel();
if (ret <= 0)
break;
written += ret;
7481
days inactive
7481
days old
linux-audio-user@lists.linuxaudio.org
5 comments
3 participants
participants (3)
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David M -
Florian Schmidt -
Lee Revell