Messages in this thread | | | Subject | Re: CONFIG_PREEMPT and server workloads | From | Valdis.Kletnieks@vt ... | Date | Fri, 19 Mar 2004 17:03:49 -0500 |
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On Thu, 18 Mar 2004 14:24:59 EST, Robert Love said: > On Thu, 2004-03-18 at 14:08, Takashi Iwai wrote: > > > oh, sorry, maybe i forgot to tell you that it has been already there > > :) > > > > # echo 1 > /proc/asound/card0/pcm0p/xrun_debug > > > > this will show the stacktrace when a buffer overrun/underrun is > > detected in the irq handler. it's not perfect, though. > > Excellent! > > Has this resulted in anything useful? > > With KALLSYMS=y, a lot of users now become intelligent bug testers. > > Eh, except that I do not have that procfs entry on my system..
Is one of these yours? My machine has 3 (but only one soundcard) ;)
% find /proc/asound/ -name xrun_debug -ls 4480 0 -r--r--r-- 1 root root 0 Mar 19 16:00 /proc/asound/card0/pcm1c/xrun_debug 4470 0 -r--r--r-- 1 root root 0 Mar 19 16:00 /proc/asound/card0/pcm0c/xrun_debug 4462 0 -r--r--r-- 1 root root 0 Mar 19 16:00 /proc/asound/card0/pcm0p/xrun_debug
(Are these 3 different controls, or 3 places to set the same variable?) [unhandled content-type:application/pgp-signature] | |