We are having some strange behaviors in our asterisk box. A Dual p4 Xeon 3ghz, with 2gb of ram and a a digium TE410p card.
The system is an Asterisk V 1.0.9 with Unicall 0.0.2c (Argentina variant) to interconnect with an Alcatel pbx and to the pstn.
It has an average of 10 concurrent calls with several queues with statics agents all of them. (an average of 24 agents logued in sip atas, an audiocodes mp-124)
The problem is that Randomly we are having some delays when the application dial is executed in the dialplan, trying to call to a sip where the agent is logued in. Debuging we found that the invite request to the sip ata sometimes takes from 20 seconds to 1 minute to be sended.(checked with ethereal).The system never goes more than 30 % of cpu usage, and when this happens, we noticed that the load average is always over 1, even when the cpus are 99% idle and there is no other process running in background, only asterisk.
Also, we checked that there is no packet loss and that the digium card isn't producing spikes.
Anyone have ideas of what is happening?
Regards.
Ivan Cetta.
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