> On Thu, 30 Mar 2017, Eliot Miranda wrote:
>
> > Once the active process is in a tight loop the delay is effectively
> disabled because the tight loop effectively shuts out the heartbeat thread
> and hence the system never notices that the delay has expired.
>
> I think that won't happen, because the process scheduler (O(1), CFS, BFS) on
> linux is not cooperative. So, the kernel will periodically preempt the main
> thread and run the heartbeat thread no matter what their priorities are. The
> higher priority only provides lower jitter on the heartbeat thread.
>
> Levente

Is there some test case or code, that I can run in Pharo and evaluate if kernel sheduler is working correctly (with heartbeat thread at normal priority).
I need to test it under FreeBSD.

Thanks! pf