Chris Wright wrote:
> * Ingo Molnar (mingo@elte.hu) wrote:
> 
>>you are right, i forgot about kernel threads. If they are nice -10 on
>>Jack's system too then they are within striking range indeed, especially
>>since they are typically idle and if then they are active for short
>>bursts of time and get the maximum boost. Jack, could you renice these
>>to -5, to make sure they dont interfere?
> 
> 
> Yup, their bursty nature makes them seem a likely culprit.
> 
> 
>>btw., why are these at nice -10? workqueue.c sets nice value to -5
>>normally.
> 
> 
> Heh, I was just wondering the same thing.
> 
> BTW, grepping set_user_nice shows a few more possible culprits.
> One more reason that there may be value in promoting the audio app to
> rt scheduling.

They were nice -10. I changed them to nice -5 recently in -mm and that 
just got commited to -bk post 2.6.10

Cheers,
Con