cpuset has the problem that suspend will hotplug all cpus except 0 which causes cpuset cgroups to be reconfigured incorrectly. this is not a problem for processes in the root cgroup but in subgroups. ulatency needs to listen for upowerd events first so it can restart the scheduler after suspend
experimental video_playback config tries to free as much cpu possible for video playback. it uses cpuset to ensure the cpu running the videoplayer and essentials like X server exclusivly on all except one core. this may help on systems that have trouble running a movie if the cpu is on it's limit decoding the movie.