On Tue, Sep 14, 2010 at 11:24:21AM +0200, Raz wrote: > 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. > anyone knows preempt rt known bugs? Like every software or every technical system it of course has bugs. > why is it not mainline yet? Large parts of the original patches are in the Linux mainline in the mean time, and the rest is constantly being worked on, in order to bring them into the official kernel as well. rsc -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- 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
