Re: Problems with cyclictest and ps

["Phil K." <binutz@gmail.com>]

Florian Boelstler wrote:
> Hi,
> 
> Phil K. wrote:
>> I tried cyclictest under Debian Lenny with Kernel-2.6.23.8-hrt3 and
>> Kernel-2.6.22 as user root. As decribed on the cyclictest-wikipage all
>> cyclictest-tasks run with the scheduler class SCHED_FIFO. I controlled
>> the scheduler class with "ps -ce" and ps showed me SCHED_OTHER for the
>> cyclictest-task.
> 
> I had the same problem using 2.6.23.9-rt12 on Debian Etch
> (schedutils-1.5.0-1) today. When checking the current state of
> cyclictest with chrt (chrt -p <pid of cyclictest), it always reported
> SCHED_OTHER and priority 0.
> When I tried to change the scheduling policy and/or priority with chrt
> it seemed to fail as well (not sure whether it tells the truth though).
> On the other hand starting cyclictest via chrt did the trick:
> "chrt -f 80 cyclictest..."
> 
> I can provide further details, when I am closer to the machine in
> question tomorrow.
> 
> Cheers,
> 
>   Florian

I posted the solution for that problem and described it in the
RTWiki(http://rt.wiki.kernel.org/index.php/Cyclictest#FAQ).

Greetings,

Phil