Hello Juri,
Please note, the user space example is only a user space example. Let me explain. you have no realtime deterministic on a rtai system for an user space example. The programm is schedulded by the normal linux system. A normal debian kernel has a cycle freuency of 1000 Hz. If your process freq is equal or higher you will get problems. For RTAI examples, please have a look at the rtai kernel example. If you use a rt-preempt kernel, you will get a proper system behavior for the userspace example. Greatings Andreas Am Monday 19 April 2010 13:36:50 schrieb Juri Gerke: > Hi, > > I try to set the maximum cycle frequency using the user example. > The master is connected with one EK1110(coupler) and one EL3102(analog > input) from Beckhoff. If the define: frequency is set to 100, the cycle > operation works fine. But at a frequency of 1000 and above I get warnings > about unmatched datagrams. If the frequency is set to 1000, does it mean > that the function cyclic_task() will be execute every 1ms? It doesn`t > matter which value I choose for frequency , I never get output warnigs > about "skipped" datagrams. Any Hints what`s wrong with my system? > > My system: > Intel Pentium M 1,8GHz > 512 MB Memory > Debian 5.0.4 > Kernel 2.6.24.7 with rtai > e100 PRO/100 Network Driver > > Kind regards > > Juri Gerke > > > -- > AFPT GmbH > Trinkbornstraße 15-17 > 56281 Doerth > Germany > > Phone: +49 6747 950185-0 | Fax: +49 6747 950185-9 | Url: www.afpt.de > > Amtsgericht Koblenz | HRB 20 638 | USt-IdNr. DE253125882 > Geschäftsführer: Dr.-Ing. Patrick Kölzer, Frank-Andre Rittenbruch _______________________________________________ etherlab-users mailing list [email protected] http://lists.etherlab.org/mailman/listinfo/etherlab-users
