13 Feb
2009
13 Feb
'09
11:17 p.m.
Hi,
As I mentioned in my previous email 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.
- UDP packet size on the Linux server is increased to 8M:
net.core.rmem_max = 8388608
- the number of children used in Kamailio config increased to 16:
fork=yes
children=16
Here is there error I am getting in /var/log/syslog file:
Feb 13 15:17:39 lab-linux01 /sbin/kamailio[12014]: ERROR:tm:new_t: out of mem
Feb 13 15:17:39 lab-linux01 /sbin/kamailio[12014]: ERROR:tm:t_newtran: new_t failed
Feb 13 15:17:39 lab-linux01 /sbin/kamailio[12024]: ERROR:tm:new_t: out of mem
Feb 13 15:17:39 lab-linux01 /sbin/kamailio[12024]: ERROR:tm:t_newtran: new_t failed
I am using 64M for the memory size (/etc/default/kamailio)
# Amount of memory to allocate for the running Kamailio server (in Mb)
MEMORY=64
Does it mean I need to increase this value?
Thanks,
Date: Wed, 11 Feb 2009 18:26:49 +0200
From: miconda(a)gmail.com
To: alex_rsm(a)hotmail.com
CC: users(a)lists.kamailio.org
Subject: Re: [Kamailio-Users] UDP packet loss
Hello,
On 02/11/2009 05:43 PM, Alex R.S.M wrote:
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hello
this is a bit low if you want to manage high traffic. Try with
children=16 and see how the results are.
Cheers,
Daniel
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(a)gmail.com
To: alex_rsm(a)hotmail.com
CC: users(a)lists.kamailio.org
Subject: Re: [Kamailio-Users] UDP packet loss
Hello,
On 02/11/2009 04:51 PM, Alex R.S.M wrote:
error
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 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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