I’ve been benchmarking different web servers recently and this post contains all of my results as well as information on how the tests were performed during the process.
I have benchmarked Apache 2.2, Apache 2.4, Nginx, Lighttpd, Varnish, Litespeed, Cherokee and G-WAN web servers when running on 1 CPU core, 2 CPU cores, 4 CPU cores and 8 CPU cores while loading a 100 byte static HTML page to determine the difference between them in performance.
2016 Update: I have run the tests again with up to date web server versions in 2016.