AW: Linux RT newbie question

["Heinz Egger" <heinz.egger@linutronix.de>]

Hello David,

there are a number of well known and reputaded companies in the area of
digital audio, video or digital simulation (automotive), just to name a few
areas, which are using a standard PC, Linux and the Preempt-RT patch. With
latencies down to the single-digit microseconds region.  

So it is shown that Linux and realtime will work pretty fine here. 

br
Heinz

> -----Ursprüngliche Nachricht-----
> Von: linux-rt-users-owner@vger.kernel.org [mailto:linux-rt-users-
> owner@vger.kernel.org] Im Auftrag von David Aldrich
> Gesendet: Montag, 8. Februar 2016 15:28
> An: Stanislav Meduna; linux-rt-users@vger.kernel.org
> Betreff: RE: Linux RT newbie question
> 
> Hi Stano
> 
> Thanks for your reply ...
> 
> > > For a new project we need to demonstrate a Linux RT-Kernel running
> > > a 'standard' x86 desktop PC.
> >
> > What is the goal of this presentation?
> 
> The goal is to demonstrate that a communication system previously
> implemented on embedded digital signal processors can be implemented on
> a high spec PC desktop. Sorry that I can't give more details.
> 
> > Are you aware that a standard desktop
> > PC might spoil your realtime attempts in various ways (SMI interrupts,
> power
> > management, ...)?
> 
> Well, I was not aware of this until reading your email and I read ' HOWTO:
> Build an RT-application' on rt.wiki.kernel.org. The HowTo suggests ways of
> reducing the impact of SMI interrupts. Is this possible?
> 
> > > I wonder if a standard Linux distro + RT kernel patch would be a
better
> > choice?
> >
> > As long as you are using a RT kernel, sane pthreads support such as
modern
> > glibc and you know what you are doing (ksoftirqd priority and similar
fun)
> > the particular distribution does not matter much. We are using stock
> Debian
> > with custom kernel as our embedded rt platform.
> 
> Do you build your kernel yourselves?
> 
> Best regards
> 
> David
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