[Users] Performance troubleshooting

[Daniel-Constantin Mierla]

Hello,


On 06/01/06 16:24, Dimo wrote:
> Hi,
> I am having performance issues with openser running on Fedora. Here is
> the scenario:
> I have a openser which is sending calls to two asterisks, doing radius
> accounting and local syslog accounting, the database for user location
> is a local MySQL and the asterisks are load-balanced through
> dispatcher.
> i have modules:
> loadmodule "/usr/local/lib/openser/modules/mysql.so"
> loadmodule "/usr/local/lib/openser/modules/sl.so"
> loadmodule "/usr/local/lib/openser/modules/tm.so"
> loadmodule "/usr/local/lib/openser/modules/rr.so"
> loadmodule "/usr/local/lib/openser/modules/maxfwd.so"
> loadmodule "/usr/local/lib/openser/modules/usrloc.so"
> loadmodule "/usr/local/lib/openser/modules/registrar.so"
> loadmodule "/usr/local/lib/openser/modules/nathelper.so"
> loadmodule "/usr/local/lib/openser/modules/textops.so"
> loadmodule "/usr/local/lib/openser/modules/xlog.so"
> loadmodule "/usr/local/lib/openser/modules/avpops.so"
> loadmodule "/usr/local/lib/openser/modules/avp_radius.so"
> loadmodule "/usr/local/lib/openser/modules/acc.so"
> loadmodule "/usr/local/lib/openser/modules/options.so"
> loadmodule "/usr/local/lib/openser/modules/uri_db.so"
> loadmodule "/usr/local/lib/openser/modules/auth.so"
> loadmodule "/usr/local/lib/openser/modules/auth_db.so"
> loadmodule "/usr/local/lib/openser/modules/auth_radius.so"
> loadmodule "/usr/local/lib/openser/modules/dispatcher.so"
>
> Now the problem is that if i use sipp to send INVITE with 10-20 call
> attempts per seccond at one time ser just timeouts without answering
> for 1-2 seconds and sipp has to retransmit the packets. The timeout
> which sipp waits is 500ms so it should be enough.
> I have something like on 500 call attempts i get 700 retransmits.
>
> I will start stripping the config to troubleshoot but i was wondering
> if you can give me some idea what the problem might be or some good
> advice on troubleshooting, where should i look, and if you have any
> bes practices to recommend.
what is the number of children you set in your configuration file? Try 
with children=16 or 32. If you use t_relay(), openser should sends back 
a 100 trying once the request is forwarded, in order to stop the 
retransmission of the request from caller. You can do it stateless via 
sl_send_reply() just a beginning of your script if you have 
time-consuming operations.

Anyway, OpenSER does not answer the calls, it just routes them. Check to 
see if asterisk is able to manage all the traffic you send to it - it is 
the box which answers the call.

Cheers,
Daniel


>
> BR,
> Dimitar
>
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