[YBA] TCP connection rate

[Jonathan Ben Avraham]

Dear list members,
What limits the rate that the Linux kernel TCP stack can accept new 
connections? How is that rate related to the rate that the application 
listening on a port can handle the connections? That is, if I try to 
connect and get ECONNREFUSED is there a way for me to know if I got it 
because the kernel could not handle the connection rate or if I got it 
because I had more connection attempts than the backlog parameter of my 
listen() call? In other words, do I need to tune the kernel or the 
application (MySQL) for the desired high connection rate and how would I 
know?
TIA,

  - yba


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