[Kamailio-Users] UDP packet loss

[Daniel-Constantin Mierla]

Hello,

On 02/11/2009 05:43 PM, Alex R.S.M wrote:
> hello
>
> > What are the number of children you have in config?
> fork=yes
> children=4
this is a bit low if you want to manage high traffic. Try with 
children=16 and see how the results are.

Cheers,
Daniel

>
> > 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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> > --
> > Daniel-Constantin Mierla
> > http://www.asipto.com
> >
>
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-- 
Daniel-Constantin Mierla
http://www.asipto.com