[AG-TECH] AccessGrid 3: What information is available

Eric Olson eolson at mcs.anl.gov
Tue May 24 13:10:57 CDT 2005

At least on linux (with a 2.6 kernel), I believe realtime support is
now available without requiring extra priviledges by using the Realtime
Linux Security Module.
I'm not aware of how exactly how secure it is, but at least you shouldn't
have to do suid root.


On Tue, 24 May 2005, Colin Perkins wrote:

> On 24 May 2005, at 17:55, Robert Olson wrote:
> >> And assuming that the OS was a realtime OS and thus could actually
> >> provide
> >> timing assurances to applications.
> >
> > I know as of a couple years ago the hardcore linux audio folks were
> > doing exactly this; I don't know the current state of the realtime
> > mods for linux.
> >
> > Anyone know if XP or MacOS provides any such support?
> They all provide limited real-time support. I can't speak for the vic
> folks, but for rat we intentionally ignored this support, since it
> exposes a number of security issues (you have to make the application
> suid root and carefully drop privileges after enabling real-time
> scheduling) and didn't seem to offer much benefit.
> Colin

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