> >> anyone can say preempt rt is hard real time? > > > > Hard realtime has something to do with how you define "missing the > > deadline". If somebody cuts the cable of your roboter controller in > > the factory hall, the system misses the deadline. So it is all about > > probabilities: hard realtime systems have a very, very low probability > > of missing the deadline. However, in real life systems, it is> 0%. > > > > So yes, if you talk about real world, it is hard realtime. > > No. Preempt rt it's not hard realtime. > > But most people/companies who think they need hard realtime really > don't. They can live with soft realtime and have a really low > probability of missing deadlines and having long latencies. For these > people, the preempt rt is adequate. Isn't any case where preempt-rt does not behave as hard reatlime a bug in preempt-rt, that should be reported to this list and eventually fixed? -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
