Kernel schedules kernel tasks on isolated cpus, SCHED_FIFO prevents kernel tasks from running

[Greg KH]

On Wed, Jun 28, 2017 at 08:39:07AM -0500, Andrei Hurynovich wrote:
> Hi.
> 
> We are trying to build realtime(-ish) system based on rhel6(kernel 
> 2.6.32-642.1.1.el6.x86_64).

Wow, you do realize that is a _very_ old and obsolete kernel, supported
by no one except Red Hat.  If you stick with it, you are going to have
to get your support from them, not the community, as you are already
paying for it :)

Good luck!

greg k-h