I'm also having real good experience with Ubuntu 10.4 (slightly customized with the UStudio packages).<br>I agree that only Firewire devices performance seems to really improve with a RT kernel.<br><br>In RT with a Ricoh chip and FFADO from svn I can have 8ms latency (I only tried using 6 channels and 8 i/o open), although I have to note that a few times with heavy load of audio streaming amongst different applications jack dies and needs to be restarted.<br>
I didn't need to set IRQ so far.<br>In non-RT I use a edirol ua-25 which works pretty good with low latency too (but not as good as firewire rt).<br><br>M<br><br><br><br><br clear="all"><br>-- <br>Marco Donnarumma aka TheSAD<br>
Independent New Media Arts Professional, Performer, Teacher<br>Ongoing MSc by Research, University of Edinburgh, UK<br><br><br>PORTFOLIO: <a href="http://marcodonnarumma.com" target="_blank">http://marcodonnarumma.com</a><br>
LAB: <a href="http://www.thesaddj.com" target="_blank">http://www.thesaddj.com</a> | <a href="http://cntrl.sourceforge.net" target="_blank">http://cntrl.sourceforge.net</a> | <a href="http://www.flxer.net" target="_blank">http://www.flxer.net</a><br>
EVENT: <a href="http://www.liveperformersmeeting.net" target="_blank">http://www.liveperformersmeeting.net</a><br>