I asked about this on the user group as well.
I still use RTAI with LPT cards sometimes just to build or show a
prototype of a machine.
On 2/18/26 2:50 AM, Betibeteka Beranduetxea wrote:
Hmmm... After RTAI main developer passing away, I guess this is just a
logic move. Moreover, integrating RTAI with a kernel that already got his
own realtime extensions probably is not the smartest thing to do, looking
at the future. I understand that.
I'm not really interested in remaining out of mainstream so I guess some
hardware upgrade will be in order in next couple of years.
However, I would say. developers mailing list is perhaps not the best place
to ask about how many people is still using RTAI. That people will probably
be plain users, not developers, just like myself, therefore they probably
are not in this mailing list. Forum would be the place to ask this question
in case there's real interest in the answer. Hopefully some migration path
will be documented in the forum, in order to ease transition. I'll be
looking into that after doing my own migration (if life permits).
Anyway, thank you all for letting me enjoy CNC all this time
Best wishes
Roman
El mar, 17 feb 2026 a las 20:34, Bari (<[email protected]>) escribió:
RTAI will be frozen after this fix. So EOL for RTAI after this.
The next move might be to Xenomai but it will require lots of work. Lets
see who would even use it IF that is a possible direction.
On 2/17/26 10:00 AM, Robert Schöftner wrote:
Am Sonntag, dem 15.02.2026 um 21:00 +0000 schrieb Alec Ari via Emc-
developers:
Hello,
Currently there's a major problem with the 5.4.290 kernel update for
RTAI, and I think I narrowed down the problem but I need testers. The
issue is that it's crashing in real environments with a parallel port
mesa card but not in a simulator. I need someone to test my changes
and can verify this works on real hardware, not a sim.
I would like to get a picture how many people are (still) using RTAI
and what their reasons are.
With some new developments in the trajectory planner, some situations
arise where the "schism" between the "realtime C possibly kernel
module" world and the "userspace c++" world becomes more and more
painful (like mirror-datastructures are needed on the C side that
correspond to stuff in the C++ world).
Given that popular hardware interfaces like ethercat and ethernet mesa
cards don't work with kernel mode realtime, there are some ideas
floating around to get rid of kernel mode stuff entirely (i.e. RTAI
support) and to unify more C/C++ stuff
So I wondered how man people are still using RTAI. Please speak up.
best regards
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