[LAU] disadvantages of a realtime kernel

[David Baron]

There ARE problems:

1. Compiling Nvidia drivers. Fix was posted but one must do this manually 
editing the Nvidia source code.

2. 2.6.26rt was unusable because of   timing problems on one of my ide 
channels. This may be hardware/cables/power supply related but the 2.6.23rt 
works better. The problems was present in 2.6.25rt as well, though I do not 
know if the rt-patch is the culprit. No one seems to complain about the 
unpatched versions.

3. nted hangs up on exit in the 2.6.26rt!!! (Cairo/Pango). Works fine in 
2.6.23rt. What rt has to do with anything here is beyond me and maybe the same 
thing would occur in a plain 2.6.26.

I will try 2.6.27 when I have a patch, but 2.6.26 was a no go from the start.

> Hi you all,
>
> I can't understand that:
>
> "[...] So, why hassle around and make a realtime kernel available in the
> repositories if Debian can work on making other security and stability
> related issues better?"
>
> what's the relationship between (realtime) and (security or stability)?
> If you plan to use a realtime kernel surely you do not want to boot it on a
> production server (my belief).
> To me applying an RT patch implies you want to stress your box to achieve
> extremely low latency paying a certain price in terms of "stability" for
> other non-audio appz.
>
>
> Platforms: http://www.kernel.org/pub/linux/kernel/projects/rt/
> these are the offical Ingo Molnar RT patches, never saw platform related
> ones and never read about they will ever be
>
> Hardware: RT patches add features to the kernel and without touching the
> rest of the code, so an RT kernel supports the same hardware of a generic
> one.
>
> Disadvantages: compile an unbootable or nonworking kernel is a little bit
> simpler :-)
>
> cheers
> r
>
>
> 2008/11/27 Grammostola Rosea <rosea.grammostola at gmail.com>
>
> > ... Some rumors say
> >
> > [quote]The realtime preemption patches are not only unstable, they are
> > available for far less platforms. So, why hassle around and make a
> > realtime kernel available in the repositories if Debian can work on
> > making other security and stability related issues better?[/quote]
> >
> > Is a realtime kernel less stable?
> >
> > Are they available for far less platforms?
> >
> > Do do support the same hardware as the normal kernels does?
> >
> > Any other disadvantages?
> >
> >
> > Thanks in advance,
> >
> >
> > \r
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