On 12/23/06 09:51 Leo Ann Boon said the following:
I would love to hear how others are using the results from show translation in system dimensioning. So far, I feel that dimensioning an Asterisk box is still mostly guesstimation :). Currently, I'm using the 30MHz per call rule to dimension.
on a Pentium D 2.80Ghz, we've sustained 300 simultaneous IAX2 calls terminating in a dialplan loop that answers the call, waits 2 seconds, plays demo-instruct and loops again.
a cursory examination revealed that a large portion of the CPU was used to handle NIC interrupts. occasionally we got a chan_iax2.so error which said, "Maximum trunk data space exceeded to..."
this seems to be controlled by the MAX_TRUNKDATA constant in chan_iax2.c which is set to 40ms of SLIN for 200 calls. it'd be nice to know what this constant is for and what would the implications of increasing it be.
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