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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Can anyone help with a performance problem.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have a very simple scenario that I am testing.<o:p></o:p></p><p class=MsoNormal>Using permissions to allow fixed gateway calls and sending them to another fixed gateway.<o:p></o:p></p><p class=MsoNormal>No registrations, no internal users just purely switching calls from one gateway to another.<o:p></o:p></p><p class=MsoNormal>I have accounting enabled but even if I switch this off it makes little difference.<o:p></o:p></p><p class=MsoNormal>I am using Sipp 3.2 with the send and receive instances on totally separate machines.<o:p></o:p></p><p class=MsoNormal>All machines are dual core Pentiums with 4gig.<o:p></o:p></p><p class=MsoNormal>Opensips is running with –m 2048 and 16 child processes log 3 but this also doesn’t seem to effect the performance.<o:p></o:p></p><p class=MsoNormal>I have the rr module running.<o:p></o:p></p><p class=MsoNormal>Basically I run the sip processes at 1 call a second and slowly step up the rate (concurrent calls don’t seem to effect the performance).<o:p></o:p></p><p class=MsoNormal>4 calls a second is fine and I can leave it running like that indefinitely however soon as I go to 5 calls everything starts to fail with retransmissions everywhere.<o:p></o:p></p><p class=MsoNormal>Most of the invites seem to eventually get through but all the byes stop being processed.<o:p></o:p></p><p class=MsoNormal>Slowing the calls/sec down doesn’t seem to help, only pausing the transmission and waiting for everything to go quiet will allow me to begin again without restarting or resetting anything.<o:p></o:p></p><p class=MsoNormal>Blogs have people running these at silly call rates so getting above 5 shouldn’t be a problem.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Must be something basic that is wrong.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any ideas?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Many thanks<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Chris<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>