New subject: [Kamailio-Users] kamailio 1.4.3 slow

30 Sep 2009

we finally found what was causing the prob, at least the prob is gone after doing this:

In the syslog config file of the server where kamailio was working fine we found this
entry:

local0.none  /var/log/messages

we added it to the server with probs and problem solved.

Since we were using the facility 0 to log the messages from kamailio apparently we need to
add that entry listed above as well to make the logging work better.
this is how we setup kamailio's logging, using the example from the web:

# log messages with LOG_LOCAL0 in /var/log/ser.log
local0.*                                                -/var/log/proxy.log

I do not know the reason why but it fixed our issue. I wanted to share with you.
cheers and thank you a lot for your assistance

jp

________________________________
From: Juan Perez &lt;jperezsip2008(a)yahoo.com&gt;
To: Henning Westerholt &lt;henning.westerholt(a)1und1.de&gt;de>; users(a)lists.kamailio.org
Cc: myoung(a)redmonsters.net
Sent: Thursday, September 17, 2009 8:49:00 AM
Subject: Re: [Kamailio-Users] kamailio 1.4.3 slow

than you a lot Henning for your suggestions, I will try to do all of that  but the lab
stuff because we already have a lab setup but it works superb too, only on the new machine
is when we have found the prob. in all our other scenarios kamailio runs super fast,
processing a lot of calls per seconds and the cpu is 99-100 % idle.
fortunately we can do this in the same machine because it has an amount of traffic
controllable by us so at any given time we can take it out or put more or use sipp, I will
post the results as soon as I have something new, thank you guys a lot again

cheers
jp

________________________________
From: Henning Westerholt &lt;henning.westerholt(a)1und1.de&gt;
To: users(a)lists.kamailio.org
Cc: Juan Perez &lt;jperezsip2008(a)yahoo.com&gt;om>; myoung(a)redmonsters.net
Sent: Thursday, September 17, 2009 6:05:07 AM
Subject: Re: [Kamailio-Users] kamailio 1.4.3 slow

On Mittwoch, 16. September 2009, Juan Perez wrote:
...
  In another scenario in our secondary site I am using
another Dell Poweredge
 1950, with dual quad core almost at the same speed and 64 bits , same
 version of CentOS and it is working like a charm. A lot of calls and CPU
 idle almost 100% all the time. That is we decided to buy a more powerful
 server to have a more robust platform in our main site but we haven't been
 able to move forward with this because of the bad performance. Any other
 ideas guys ? 
Hello Juan,

as this looks more like a hardware issue to me i'd try to find issue that causes this
particular server to be that slow. Somewhere it must spend this time. Some ideas:

- Start kamailio with only one worker children, and then use strace to see what its doing
when its hangs
- enable debugging (only for a few seconds if you've production load on the system)
and then look to the timestamps where its spend the time
- use the benchmark module as Daniel already suggested
- try to replicate the setup in a lab environment and then use a load tester (e.g. sipp)
to give some traffic to the system. then change certain parts of the configuration and
setup to find the culprit

Cheers,

Henning