[linux-audio-user] help debugging alsa xruns

[Carlos S]

Hi,

I'm developing an audio capture program for the RME Hammerfall, but I always 
get a lot of xruns even with big buffer size.
my kernel version is 2.6.5-7.104-smp, alsa version is 1.0.3 and JACK is 
0.94.0
I have activated alsa tracing in /var/log/messages and I always get the same 
report:

ALSA sound/core/pcm_lib.c:169: XRUN: pcmC0D0c
Call Trace:
  [__crc_vc_cons_allocated+861088/1876935] 
snd_pcm_period_elapsed+0x3d4/0x440 [snd_pcm]
  [<faf4c3d4>] snd_pcm_period_elapsed+0x3d4/0x440 [snd_pcm]
  [__crc_vc_cons_allocated+1028019/1876935] snd_hdsp_interrupt+0x177/0x180 
[snd_hdsp]
  [<faf74fe7>] snd_hdsp_interrupt+0x177/0x180 [snd_hdsp]
  [handle_IRQ_event+47/96] handle_IRQ_event+0x2f/0x60
  [do_IRQ+167/496] do_IRQ+0xa7/0x1f0
  [common_interrupt+24/32] common_interrupt+0x18/0x20
  [default_idle+0/64] default_idle+0x0/0x40
  [default_idle+41/64] default_idle+0x29/0x40
  [cpu_idle+36/80] cpu_idle+0x24/0x50
  [start_kernel+842/976] start_kernel+0x34a/0x3d0
  [unknown_bootoption+0/400] unknown_bootoption+0x0/0x190
  [<c03ee100>] unknown_bootoption+0x0/0x190

it would be greatly appreciated if you could give me some advise.
Thank you very much for your help.

Carlos