http://www.jackaudio.org/linux_rt_config returns 404
http://jackaudio.org/faq/linux_rt_config.html
commit 8f7c14811b1e77f8144b81177eefd7c082c8e611 Author: Alexis Ballier <aballier@gentoo.org> Date: Fri Feb 5 15:22:11 2016 +0100 sys-auth/realtime-base: update homepage, bug #568680 thx