I have a branch that is ready for testing that makes some significant changes to the Asterisk channel handling core. The changes improve the data structure management for Asterisk channels. This will provide a large performance benefit. See the following post to the asterisk-dev mailing list for more information, as well as where to get the code for testing.
Asterisk-dev – Request for Testing: team/russell/chan_refcount
can’t wait for 1.6 =D