[Bulk] Re: [Users] Performance troubleshooting

[Dimo]

Hi guys,
I fixed parts of my problem.
It was related to too much writing in the syslog, resulting in big
iowait for the box. Also it appears that a remote mysql cluster which
is used for the location table is not that good idea, with the
cacheless config i have.
Thanks everybody.


Dimitar

On 6/8/06, G.Jacobsen <g_jacobsen at yahoo.co.uk> wrote:
> Perhaps slow DNS lookups ? I would check with Ethereal what traffic the OS
> box generates.
>
> ----- Original Message -----
> From: "Dimo" <begeragus at gmail.com>
> To: <users at openser.org>
> Sent: Thursday, June 08, 2006 10:55 AM
> Subject: [Bulk] Re: [Users] Performance troubleshooting
>
>
> > 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
> > > >
> > > > _______________________________________________
> > > > Users mailing list
> > > > Users at openser.org
> > > > http://openser.org/cgi-bin/mailman/listinfo/users
> > > >
> > >
> >
> > _______________________________________________
> > Users mailing list
> > Users at openser.org
> > http://openser.org/cgi-bin/mailman/listinfo/users
>
>
>
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