This is the PSGI branch of WebGUI8 Currently, the best performance is achieved via: plackup eg/basic.psgi -E none -s Starman --workers 10 You can benchmark your server via: ab -t 3 -c 10 -k http://dev.localhost.localdomain:5000/ | grep Req I'm currently getting 20 requests/second, whereas I'm getting 30/second on the non-PSGI WebGUI8 branch.