Here's the results:

https://gist.github.com/cholick/1325fe0f592b1805eba5

The time all between opening connection and opened, with the corresponding
ruby source in http.rb's connect method:

D "opening connection to #{conn_address}:#{conn_port}..."

s = Timeout.timeout(@open_timeout, Net::OpenTimeout) {
TCPSocket.open(conn_address, conn_port, @local_host, @local_port)
}
s.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
D "opened"

I don't know much ruby, so that's as far I drilled down.

-Matt