A eto go i pylnija otgovor: malyk citat ot Bug #76413 : arts does not follow ALSA API
"The CPU usage problem: You've hit probably a bug in our rate resampling code which was
fixed a few days ago in our CVS (you may try to force dmix pcm to same rate as arts uses
for your tests). The dmix's slave timer uses the master PCM stream as clock, thus it is
clocked with the period time."
Ta nakratko, dyrpajte arts-a ot cvs.
P.S. A tova e ot edin komentar po vyprosa : "And finally we are all hoping for aRts to die soon, it just needs a proper replacement."

'>))))