Hello,
I am trying to find out maximum registration rate that my S-CSCF can handle in a defined period say 10 minutes. I am trying to register about 24000 users on my Open IMS core. My rate currently is 10 registrations per second. But whne I try to send registrations I am able to successfully register about 3800 users but after that my S-CSCF starts giving me an error (see attached file) and I only see an increasing number of 1st register and then some unexpected messages. My wireshark shows me 600 busy everywhere message from the S-CSCF. It also says that unable to forward it to S-CSCF.
Note: Though when I restart my S-CSCF my process continues from where it stopped. I start getting an increasing no. of registrations and 200 oks. But this is not what I want. I dont want my S-CSCF to stop and start giving me errors.
Dear Dhruv
the 600 busy message indicates that the used S-CSCF has reached its capacity and it is not able to accept additional queries.
Are you using a virtual machine ?
hereafter some proposals if you want to increase the number of the registered users.
1- try to give more capacity to your VM/ or check out if you can set the capacity of the S-CSCF in its configuration file
2- Try to create an alternative S-CSCF (load balance)?
Think to combine the two proposals as well.
PS: I'm really curious to know what are the characteristic of your used machine
I think I got rid of the problem by running SER with increased memory limits (-m 1024). Now I can register 20000 users without crashing. SER memory usage is 150MB per process and Java 1GB.
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