He espoused using a " plug in" technology to give modularity without losing efficiency. He demostrated a tool for building a new kernel from a GUI which also gave estimates of resource requirements.
He felt that the "plug in" technology was more efficient than the client/server technology utilized by, for example, Chorus.
On the other hand, Sun reportedly has succeded in stripping down Chorus using its microkernel nature to provide a realtime underpinning for real-time Java for things like the new Web phones, where footprint is important.
Regards,
Mike
Bernhard Kuhn wrote:
--Herman Bruyninckx wrote:> Could you give some references that contain somewhat more detail: what are
> the ``Backward'' features of Linux?IMHO Paolo is talking about the scheduling in user space (Timeslots,
unpredictable)
and kernel space (AFAIK kooperative round robin, also unpredictable).Both scheduling-algorithms were never designed for hard real time applications.
One way out would be using the posix-scheduler in user space
and rt-linux for kernel level threads.The posix-scheduler for user space is already available, but as
the kernel is rather undeteministic, it isn't very usefull.When RT-Linux is implemented into linux-2.3 and all device drivers
are tuned for the posix-API of rt-linux, then you can say Linux is
realy a superior RT-OS!
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