Rate lwp-parallel          lwp         curl        mhttp
lwp-parallel 9.07/s           --         -78%         -89%         -96%
lwp          41.3/s         355%           --         -50%         -81%
curl         83.3/s         818%         102%           --         -62%
mhttp         217/s        2296%         426%         161%           --