I tried googling for real-time computing with OpenBSD and all I found
was reference to RTMX.
In http://openbsd.org/products.html, it read: They (RTMX) have
graciously donated the source code for these extensions, and these
changes will be integrated into OpenBSD soon.
In http://archives.neohapsis.com/archives/openbsd/2004-01/1001.html,
it stated it was supposed to have been already implemented in OpenBSD
release 3.2.
It sure would be great knowing the OS we love is already for real-time
as it's already enjoying great reputation as a secure platform.
Thanks!