Damien Roullier wrote:
>
> I use a p166 mmx with an S3 virge DX... and XFree 3.3.5. But my questions are
> especially for future applications to know which hardware components are the
> best to use with RTAI.
Interesting i didn't see to much problems with 3.3.x altough with 4.0.x
my
s3 virge DX is useless. I think it is probably safe to say the s3 virge
DX should
be way on top of the "do not use for hardrealtime" list.
- Erwin
>
> Damien
>
> Erwin Rol a écrit :
>
> > Damien Roullier wrote:
> > >
> > > Hi,
> > >
> > > I think there are problems with some graphic cards and some X server may
> > > involve delays in LXRT mode in RTAI, is it right ? and which cards and X
> > > server don't have these problems ?
> > Not only in LXRT mode, and not only with RTAI (also with RT-Linux). My
> > S3 card
> > totally kills any realtime behavior there is, with jitter upto 50 msec
> > (0.05 sec). I looked
> > into it a while back and noticed this didn't happen with XFree 3.3.X and
> > it goes
> > away when turning off acceleration (although X gets unusable slow when
> > doing that :-/).
> > The low latency ppl also warm against using the linux framebuffer
> > drivers, although they
> > don't have hardrealtime so this warning might not be of importance for
> > RTAI.
> >
> > I am interested in hearing what hardware you use and what X server.
> >
> > >
> > > I also would like to know which processors are the best for RTAI, and
> > > thus if there are problems with some of them.
> > >
> > > Thanks for your answers.
> > > Regards.
> > >
> > > Damien
> > > --
> > >
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