Thank you guys for your quick response.
I am new to Kamailio so all your information are very helpful for me.
My setting: children=8 in kaimailio.cfg . I did not change it and leave it by default on my 4 cores system.
My thought: I think it may related to Mysql since cpu and iowait is low and the problem happens only when I add more subscribers to mysql database.
I will try according to :
1: Dmitri combination of mysql and htable as mysql cache 2: Mathias tune MySQL server
3: I think ram database should help on this. But it seems these is little document on redis. I am looking into SQLite3 memory mode but if there is any related reference / link will be appreciated.
Thanks with regards, David
David
2017年9月28日 下午02:59，Daniel-Constantin Mierla miconda@gmail.com 写道：
Hello, it seems that interaction with mysql is a bottleneck. What is the value of children parameter in kamailio.cfg? Cheers, Daniel
On 28.09.17 04:00, Jiankai Zhu wrote: My goal:
make sure when using kamailio as engine I can achieve: on systems with 4GB memory, Kamailio can serve a population over 300 000 online subscribers <from: https://www.kamailio.org/w/features/%C2%A0%3E
Test bed: CPU: 4 cores , 4G RAM
Kamailio 5 with Mysql.
Test source：another server running SIPp
10k subscriber in Mysql . 6000 Register Per Second , reuse 10k user to register , it works fine. If register 50 every second for per user it seem 300 k subscribers should work. (about 300% cpu used of totally 400% cpu. All requests finished without retransmit and fail. )
add 90k subscriber into Mysql . 100k subscirbers in Mysql . 1000 Register Per Second , a lot of failure and can not work .
(cpu are not used much at that time. IO is not high.)
My question : What is the root cause of bad performance when there is 100k subscribers' data in the Mysql database.
How can I deploy a kamailio with 300k subscriber in database, and support 6000 register per second at the same time ? Maybe use ram database instead of Mysql?
Thanks with regards, David
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