Hey Ghost, I did not mean this as a criticism but rather a suggestion regarding priorities. RCU is awesome and I spend probably 20mn or more on it every day. I'm in the software industry myself and suspect that there are many options to make RCU faster withing changing the software.

Viewed from here, it appears that RCU is IO bound at the limit. Sometimes, an HTTP request can take more than 1mn to be served. RCU probably needs more web servers and web servers need to be configured to deny traffic sooner to avoid having everyone wait for a very long time. An easy way to do this would be to decrease the number of connection that the web servers accepts. If you do this some people won't go through until you add web servers but at least whoever getting through will have a good experience.

Arnaud