Re: [Sipp-users] Performance tips

Mon, 11 Sep 2006 14:46:30 -0700

One thing I find is that SIPP is essentially single threaded – so on a Dual Core (or Hyperthreaded) system you only really use one CPU, which is where I suspect your 50% comes from. We would normally run UAS and UAC on a single system – which uses both CPUs.

 

Then to scale use multiple systems – emulating multiple destinations of course – it depends on exactly what you are trying to test.

 

Peter

 

Peter Higginson

Newport Networks Ltd,

Direct line 01494 470694

http://www.newport-networks.com/

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eyal Czitron
Sent: 05 September 2006 10:54
To: [EMAIL PROTECTED]
Subject: [Sipp-users] Performance tips

 

Hi, fellow sipp users.
 
 I've been testing with sipp for some time now and I would like to know what
 are there some kind of tricks to make it perform better on my system. I've
 read the manual and I know about the -timer_resol, -max_recv_loops and
 -up_nb commands. I have tried different variations, like decreasing the
 max_recv_loops value and increasing the up_nb value, but I don't seem to
 gain much performance with that. Especially I have problems with the UAS
 scenario, that shows CPU congested basically all the time. I'm using two
 P4's with 3,6GHz CPU and 2GB of DDR2 RAM. Other one is running the UAC and
 other the UAS scenario. I'm getting about 3000 calls/second, connecting
 directly between two sipps.
 
 UAS scenario is bugging me since it shows CPU congested and the CPU load is
 somewhere around 50%. Could someone give me a hint on what values of
 -timer_resol, -max_recv_loops and -up_nb I could try on my system? What kind
 of values are you getting and with what kind of systems?
 
 Regards,


 



 



 



 



Eyal Czitron: Followap



PSP QA Engineer

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