lkml.org 
[lkml]   [2000]   [Jul]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: An important fact about real time computing
Date
In article <2513CDDD84CED211BAC60008C75D45B10474C470@hqmail01.frc.com>,
Ingles, Raymond <Ray.Ingles@fanucrobotics.com> wrote:
>
> Normal Linux is probably adequate for most soft real-time applications,
>and probably a lot of firm real-time applications, and perhaps there's
>room for some improvement here. I think I agree with Linus that if you
>really have a hard real-time constraint, you're better off using a more
>specialized system.
>
> I'd say high-quality audio and video falls somewhere between soft and
>firm, depending on application. Sometimes an occasional glitch in the
>stream is acceptable, sometimes it isn't. However, I can't think of too
>many cases where an audio skip would lead directly to someone's death.

Desktop audio/visual is soft and must be supported in Linux for modern
systems or it (linux) will not have any chance at succeeding on the desktop.

Studio/mixing audio/visual is firm and should be supported in Linux but it is
ok to specify constrained hardware choices to get better results.

Live audio/visual may be closer to hard and given the cost of retakes may
make using RT extensions such as LXRT or RTAI reasonable.

--
__O
Fireplug - a Lineo company _-\<,_
PGP Fingerprint: 28 E2 A0 15 99 62 9A 00 (_)/ (_) 88 EC A3 EE 2D 1C 15 68
Stuart Lynne <sl@fireplug.net> www.fireplug.net 604-461-7532

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:57    [W:0.045 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site