[Kamailio-Users] UDP packet loss

[Daniel-Constantin Mierla]

Hello,

On 02/11/2009 04:51 PM, Alex R.S.M wrote:
> Hi,
>
> 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:
kamailio autodetects and sets the buffer size to the maximum allowed. 
What are the number of children you have in config? Do you get any error 
messages in the syslog?

Cheers,
Daniel

>
> $ 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?
>
> Thanks,
> Alex R
>
>
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-- 
Daniel-Constantin Mierla
http://www.asipto.com