On Mon, 2009-01-19 at 21:45 +0100, Jürgen Mell wrote: > > > > Esben, > > > > > >> I am going to suggest that we use preempt_realtime for a _real_ project > >> (i.e. costumers will depend on it). We will run on standeard x86 (maybe > >> x86_64) hardware and will only need serial interfaces for realtime > >> purposes. Security is not an issue. Which version of preempt_realtime > >> should I pick? > >> > > The latest and greatest *and* most stable version is 2.6.24.7-rt26. As > > far as I know (but maybe others know better), there are no unresolved > > issues with this "Latest Stable". The kernel release 2.6.24 may not > > contain sufficient architecture support for PPC and ARM, but the large > > majority of x86 based processors and chipsets is well supported. > > > > Please report, if anything does not work as expected. > > > The only thing which is missing for me from the 2.6.24.7-rt series is > the patch > "x86-fpu-fix-config_preempt-y-corruption-of-application-s-fpu-stack.patch" > , GIT commit > 870568b39064cab2dd971fe57969916036982862 from mainline 2.6.25. This > might cause trouble with applications which are using floating point > arithmetics. Otherwise I am using the 2.6.24.7-rt series on a machine > control for a 16 axes machine and it is working mostly well. There are > only some points where I get big delays (up to some milliseconds) with > my timer routine, where normally delays are below 50 microseconds. Up to > now I could not find the application ( X ??) which is causing this. > > Bye, > Jürgen > Which GIT-tree are you refering to? Is there at all an up-to-date GIT repository with preempt realtime? Esben -- 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
