On Thu, Apr 22, 2010 at 3:48 PM, Vishal Ahuja <[email protected]> wrote:

> Hi All,
>
> If I use the priocntl command to change the class of a process from
> 'Interactive' to 'Real time', and set its priority to 59, how does this
> process fare against other user and kernel processes in the system.
>

RT threads have priority over all others including SYS threads.

My understanding of RT threads is that they don't have user priorities, but
I don't have much experience with them.

r...@lab-01:/root# ps ax | grep 4970
  4970 pts/1    S  0:00 top
  5052 pts/2    S  0:00 grep 4970

r...@lab-01:/root# priocntl -s -c RT 4970
r...@lab-01:/root# renice -10 4970
renice: 4970:getpriority: Invalid argument

r...@lab-01:/root# priocntl -s -c TS 4970
r...@lab-01:/root# renice -10 4970

-- 
Giovanni
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