http://ccrma.stanford.edu/planetccrma/software/
http://lwn.net/Articles/572740/
https://osadl.org/Realtime-Preempt-Kernel.kernel-rt.0.html
https://rt.wiki.kernel.org/index.php/Main_Page
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=63&t=2376
