Zou,
If you want a truly open-loop workload generator you should use -l 0,
which removes the open call limit.
Unfortunately, if the remote host is under overload (i.e. you have
exceeded its capacity and calls can not complete at the rate you desire),
then SIPp in multi-connection mode is going to inevitably use up the
maximum number of sockets available from the OS; which is really a
limitation of any workload generator.
You may find that you can get better results by running multiple instances
of SIPp, as then each one would be able to generate more load before
running into limitations.
Charles
"邹嘉" <[EMAIL PROTECTED]> wrote on 07/14/2007 06:25:36 AM:
> Hi, Charles,
>
> Thanks for your response.
> But, in our experiment settings, we set the call limit(-l) to a
> very large value, to make sure the number of new calls SIPp has made
> per second equals to the specified call rate.
> As to the -max_sockets parameter, we've found that after the
> simultaneous openning sockets number reaches that value, SIPp will
> not open a new socket for a new call, but reuse a existed socket. In
> that sense, those conncections becomes persistent, and this is not
> the situation we want to benchmark.
> What we want to benchmark is the situation that many clients
> connect to the OpenSER proxy, and each of those clients opens a
> connection and will close it after the call finishes.
> My question is whether SIPp can help us with our benchmark in
> such situation, thanks very much.
> Cheers!
> Zou
Jia
>
>
> > -----Original Message-----
> > From: Charles P Wright <[EMAIL PROTECTED]>
> > Date: Fri, 13 Jul 2007 09:23:54 -0400
> > To: "Boulkroune, Olivier (Non-HP:Atos Origin)"
<[EMAIL PROTECTED]>
> > Cc: sipp-users@lists.sourceforge.net, [EMAIL PROTECTED]
> sourceforge.net,
> =?GB2312?B?1968zg==?= <[EMAIL PROTECTED]>
> > Subject: Re: [Sipp-users] Problem of SIPp and OpenSER in -t tn mode
> >
> > Zou,
> >
> > You may also find that setting a call
> > limit (-l) and a maximum number of sockets (-max_multi_socket) will
help
> > your situtation.
> >
> > Charles
> >
> > [EMAIL PROTECTED] wrote on
> > 07/13/2007 04:04:45 AM:
> >
> > > Hello Zou
> > >
> > > -t tn implies using TCP with one socket per call, so it's probable
> >
> > > you faced sipp/system limitations at high call rate (which call rate
> > > ?). If you could avoid using this mode, it will be better.
> > >
> > > Regards,
> > > Olivier Boulkroune
> > > ;
> > > -----Message d'origine-----
> > > De ;: [EMAIL PROTECTED] [mailto:sipp-users-
> > > [EMAIL PROTECTED] De la part de ??
> > > Envoy?;: vendredi 13 juillet 2007 08:17
> > > ?;: sipp-users@lists.sourceforge.net
> > > Objet ;: [Sipp-users] Problem of SIPp and OpenSER in -t tn mode
> > >
> > >
> > >
> > > Hi, Dear all!
> > >
> > > ; ;We need to test a scenario that many clients connect
> > to OpenSER
> > > proxy server. So, we used the
> > > -t tn mode. However, when call rate increases to some level, the
> > > SIPp will stop sending packets.
> > > Did anybody also encounter such problem? ;Or any suggestions
> > to test
> > > such scenario for OpenSER?
> > > ; ;Thanks very much!
> > >
> > > ; ; ; ; ; ; ; ; ; ;
> > ; ; ; ; ; ; ; ; ; ; ;
> > ; ; ; ; ; ; ; ;
> > > ; ; ; ; ; ; ; ; ; ;
> > ; ; ; ; ; ; ; ; ; ; ;
> > ; ; ; ; ; ; ; ; ;Yours,
> > > ; ; ; ; ; ; ; ; ; ;
> > ; ; ; ; ; ; ; ; ; ; ;
> > ; ; ; ; ; ; ; ; ;Zou Jia
> > >
> > >
> > >
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