[Kamailio-Users] UDP packet loss

Alex R.S.M alex_rsm at hotmail.com
Wed Feb 11 16:43:29 CET 2009


hello

> What are the number of children you have in config? 
fork=yes
children=4

> Do you get any error messages in the syslog?
not getting any error message in /var/log/syslog


Thanks,
Ali


> Date: Wed, 11 Feb 2009 17:21:46 +0200
> From: miconda at gmail.com
> To: alex_rsm at hotmail.com
> CC: users at lists.kamailio.org
> Subject: Re: [Kamailio-Users] UDP packet loss
> 
> 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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> > ------------------------------------------------------------------------
> >
> > _______________________________________________
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> 
> -- 
> Daniel-Constantin Mierla
> http://www.asipto.com
> 

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