ConfBridge audio mixing on SMP system

Hi list, I was reading this voip-info page regarding MeetMe using only 1 cpu core during the mixing stage of a conference.

I have been Googling to try to understand if/how ConfBridge behaves in comparison but I havn’t been able to find the answer. Can anyone shed light on this or is there a document somewhere that will help me? I have an Asterisk 1.8 server that makes heavy use of MeetMe and the users are complaining of audio drops. I am wondering if ConfBridge makes better use of available cpu cores when mixing the audio.

Many thanks