[OpenSBC] OpenSBC scaling in B2BUA mode

[craig g. <cra...@ze...>]

Hi,  I am running an instance of OpenSBC 1.1.5 and opensipstack pulled from CVS on 26 January.  I'm running it in B2BUA mode with 'always proxy media' set.  The instance of OpenSBC has two interfaces, one external on the internet and one internal.  There are 2 x Asterisk servers sitting on the internal interface with incoming calls being routed to them in round robin fashion.  I sent it 26 concurrent calls (setup in about 1 second) in its default configuration successfully.  I then upped the ante by sending it 120 concurrent calls (all hitting OpenSBC within a second) and it just stopped working (process died).  What settings should I configure in order to support 120 concurrent calls with media proxying?  Each call will have 4 rtp sessions and hence 480 total rtp sessions.  The default logs don't really show anything useful, they are fine until they stop at the point OpenSBC dies.  OS is Centos 5.


 Craig