Could we say it a bit stronger than that? Opening and closing connections from the same source to the same service is wasteful since you need multiple extra round-trips and it resets all the TCP dynamic tuning like CWND.
I thought your talk was great; one minor niggle: you said that the result of too many sockets in TIME_WAIT would be dropped packets; it should refuse to open the new connection if no slots are available.
Yes, it's really wasteful to have unnecessary connect()/accept() calls, plus handshaking and buffer allocation, and TCP dynamic tuning, etc.
And you're right, thanks, TIME_WAIT full should just error on the Linux client. I was thinking of a different kernel which has bugs in this area, and ends up dropping SYNs...
I thought your talk was great; one minor niggle: you said that the result of too many sockets in TIME_WAIT would be dropped packets; it should refuse to open the new connection if no slots are available.