[Users] Performance troubleshooting

[Dimo]

On 6/1/06, Daniel-Constantin Mierla <daniel at voice-system.ro> wrote:
> 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.

I used the default children=4, but tried with 16 and 32 and it still
retransmits.
I use t_relay.
The actual thing I observe is that openser starts to process the first
calls just fine and at a point it just freezes and does not give
neither 100 trying nor anything else. Then in 1-3 seconds it starts
replying again, and after 2-3 seconds it gets clogged again.
I wolud appreciate any other ideas. Like is there some way to maybe
increase the memory openser is using?

>
> 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.

Actually just to test the openser i sent non-existing numbers not to
load the asterisk too much. I just want to get the trying an/or error
messages from openser and that is where it times out often.
In my scenario i authenticate the invites, and the initial 401 which
challenges the invite to be retransmited with user info is also
timeouting at similar loads and times, so no asterisk there.

>
> Cheers,
> Daniel
>
>
> >
> > BR,
> > Dimitar
> >
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> >
>