Great for audio
This patch set has actually been used in Fedora linux (as a project offshoot called Planet CCRMA - other distros also) for some time, because of its use with audio applications. Sadly, the current patch set is incompatible with the current linux kernel. Red Hat and others have promised to bring it up to speed, but it doesn't appear like a currently patched kernel is appearing any time soon.
When used, it makes Linux the best audio platform around, easily.