> > Therefore we can't seriously suggest obsoleting raw-device
> > access as long as we can't provide efficient means for
> > continguous file allocation and access with minimum meta-data
> > slowdown. Hmm.. I will think about this...
>
> You may want to try to dig up an old POSIX.4 draft, and read the stuff
> about "real-time files"... they got cut from the standard, but
> provided this kind of functionality. (Gallmeister talks about them a
> little in his book on POSIX.4)
IRIX XFS volumes can contain a realtime part with guaranteed rate i/o.
I'm not aware of any other implementations of realtime i/o on files.
Ralf