Question about Sipper Traffic Configuration

[phoenix6789]

Hi,

I've been experimenting with Sipper over the last couple of days and
I'm very impressed with it. I've used a lot of simulators and traffic
tools and it has a very intuitive feel and is very versatile.

I've been debugging how Sipper schedules traffic with the load option
and no matter how Iconfigure it, I can't seem to get an effective
traffic rate over 15 cps. Do you think it should be possible to get
100 - 200+ cps from Sipper?

Another question I had was about traffic statistics. Is there any
mechanism within Sipper to report on messages sent / received / timed
out / unexpected while running with the load option?

At the moment I'm running Sipper2.0 on Ruby 1.8.6 on windows XP with
the system under test on the local machine along with SIPp as another
SIP server instance to monitor traffic throughput.

Do you have any suggestions on how I could improve the traffic
performance?

thanks,

Dave.

[sharat mohan]

Hi,
You can easily get 70-75 cps from a single Sipper instance. If you have a dual cpu machine then you run two Sipper instance to increase the overall cps.

Here are some guidelines for load testing:

1. It is recommanded to use a controller script instead of a test script in case of load generation to get better performance (as controller doesn't involve call flow verification).
2. If somebody wants to run load using a test case, please set the value of variable SessionLimit to a lower value e,g 6000

3. Make the log level to "ERROR" in the config/log4r.xml file.

4.If u get the "Too many open files" error, add the following line in your test script at:

def test_case
  Process.setrlimit(Process::RLIMIT_NOFILE, 4096, 65536)  
  :	
  :
end

Regards

Sharat

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