Linux.com has a
quick look at Enea Linux 2.0, an embedded distribution based on Yocto.
"Enea's Light-Weight Runtime Threads (LWRT) technology, for instance,
offers improved real-time characteristics in Linux user-space, delivering
scheduling, message passing, and resource management functionality. The
result is that applications can run with improved determinism and minimal
overhead, thus addressing some commonly held concerns about traditional