[OpenSER-Users] Openser1.3.1 performance figures

Hello, 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? Thanks for your help, Regards, VJ