Re: 2.6.15-rt2 - repeatable xrun - no good data in trace

[Michal Schmidt]

Mark Knecht wrote:
>    While I have to agree that *if* cdrecord is running at a higher
> priority then Jack would get trumped, I'm not positive yet that we
> know that's true in this specific case. I have not yet received any
> response from the developer of k3b, and while cdrecord is listed in
> the setup of k3b I'm not sure how to test that it is really causing
> the specific failure I saw.

That shouldn't be too hard. While burning a CD, see the priority 
cdrecord is running at. You can use:
ps -eo pid,user,args,pri | grep cdrecord

Also see if you have cdrecord installed suid root:
ls -l `which cdrecord`
If you do, you can be pretty sure that it runs at the highest possible 
realtime priority. This is hardcoded in cdrecord. It does it if it runs 
priviledged.

Michal

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