[LAU] Real Time Kernel best settings

Hi I have a little confusion with some real time kernel settings, sure will be hardware dependent, but ... I really interested to discuse of some settings like the following and others: --- Enable the block layer [ ] Support for Large Block Devices [ ] Support for tracing block io actions [ ] Support for Large Single Files [ ] Block layer SG support v4 (EXPERIMENTAL) IO Schedulers ---> Processor type and features ---> HPET Timer Support Device Drivers ---> Character devices ---> <*> Enhanced Real Time Clock Support [ ] Real Time Clock Histogram Support <*> Priority Inheritance Debugging (Blocker) Device Support [ ] HPET - High Precision Event Timer Sound ---> Advanced Linux Sound Architecture ---> <M> RTC Timer support [*] Use RTC as default sequencer timer I have this settings ..... but .... ALSA don't load snd_rtctimer running lsmod I can only see snd-timer .... and I need to load snd-rtctimer by hand ... but in fact I don't know what module is used. Thanks Josep