[asterisk-users] How to get the original SIP result code

[Gareth Blades]

On 23/08/13 10:44, Mordechay Kaganer wrote:
> In my experience with local channels, they cause a huge performance 
> problems, even without sipstorecause. We are dialing on about 100 
> channels in parallel and looks like this will kill my CPU :-) 

Really?
We had Asterisk 1.8 with this setup and pushed 250+ concurrent calls 
through it and it coped quite well. All these used local channels for 
dialling.

Our new systems are Asterisk 11 with no Dahdi. Quad "Intel(R) Xeon(R) 
CPU E5-1410 0 @ 2.80GHz" and reached about 40% cpu with 300+ concurrent 
calls.

The new systems are a complete reinstall (OS upgrade with alter kernel 
to take advantage of res_timerfd) but like previous versions they still 
suffer from a gradual rise in load average. Every month or so we need to 
restart asterisk to bring the load average down. No idea what the cause 
is but its an automated process now so has no impact.