[lug] Linux App Midnight Problem

[D. Stimits]

Gregory Seker wrote:
> Running Kernel 2.4.20 on an Intel STL2 motherboard.
>  
> Application services a home brewed audio card every 23 mSec.
>  
> Seems every so often (twice a month or so) the service routine
> is held off about 10-50 mSec just after midnight (like mSecs after
> midnight) causing problems.
>   - crond is disabled
>   - clock/date syncing is disabled (ntp, gps, etc).
>  
> Trying to rule out kernel and OS processes.
>  
> Any ideas or a good forum to look into ?
>  
> -zeke

Depending on what language it is written in, you might be able to 
compile it with profiling enabled, and use something like gprof to view 
it with timestamps. Then see what happens right around that time and 
compare it to other times.

D. Stimits, stimits AT comcast DOT net