Hello,

On 07/03/08 12:06, Klaus Darilion wrote:

Henning Westerholt schrieb:

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On Friday 27 June 2008, Sundaramoorthy, Vijaianand wrote:

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We are trying to benchmark openser1.3.1 - installed in a 2cpu-dual core(Intel(R) Xeon(R) CPU 5110 @ 1.60GHz),hp c-class blade, with 2GBRAM. OS:RHEL4U5.

We have configured openser with mysql database as registerer.

We are using IMS Bench(IMS SIPp),to generate SIPp traffic - combination of registration/re registration/de-registration/call flow(uac)/scenarios.

It looks like, the when the calls per second is increased 150/200 CPS, calls started failing.

Is this is normal acceptable performance figures for openser for the above configuration?

we record route all the SIP requests (except for REGISTER,MESSAGE ) and we do have mysql database for authenticating registration requests.

Attached, the openser.cfg Also attached the Error logs from SIPP.

Anyone have some clues/hints?

Hi Vijaianand,

the number you've quotes is not that bad, but you should be able to achieve a better performance with four 1.6 GHz cores. Does everything run on this one machine, e.g. the IMS bench and the database?

I assume that the DB is the bottleneck in your configuration, try to use usrloc in db_mode=0 to test. Another possible issue can be DNS, try to use IPs instead names or a local dns cache.

Also take a look at the CPU usage. Is it reaching 100% when problems start? Increase the number of processes, e.g children=10 and see if the performance increases.

Like Henning said start finding the bottleneck. Disable all external components like DNS lookups and DB queries (usrloc, authentication, accounting). Then take a look if the performance is better. Then add again one after the other and find the bottleneck.

just to remind about the benchmark module, can be used to identify the parts of the config file that takes long execution time: http://openser.org/docs/modules/1.3.x/benchmark.html

Cheers, Daniel