11 Feb
2009
11 Feb
'09
5:22 p.m.
On Wednesday 11 February 2009, Alex R.S.M wrote:
I am performing SIP to SIP performance testing using
Kamailio proxy
(UAC-Kamailio-UAC). After increasing the load to 300 calls/sec Kamailio
begins dropping UDP packets. (250 cps works fine). CPU utilization and
network bandwidth looks fine. I think the bottleneck is the Linux UDP
buffer size of the proxy server. Here is the proxy server information:
$ uname -a
Linux lab-linux01 2.6.24-19-server #1 SMP Wed Jun 18 14:44:47 UTC 2008
x86_64 GNU/Linux
$ sudo sysctl -a | grep net.core.rmem_max
net.core.rmem_max = 131071
The question is if I increase the linux UDP buffer size do I need to change
any configuartion parameter (like MAX_RECV_BUFFER_SIZE) in Kamailio?
Hi Alex,
we're using a bigger rmem_max size, and not increased the
MAX_RECV_BUFFER_SIZE. So far we don't have any problems. :-) The UDP receiver
buffer is probed during the startup of the server.
Cheers,
Henning