This is a good article: https://blog.cloudflare.com/a-question-of-timing/ This is my .curlrc file: --write-out "dnslookup: %{time_namelookup} | connect: %{time_connect} | appconnect: %{time_appconnect} | pretransfer: %{time_pretransfer} | starttransfer: %{time_starttransfer} | total: %{time_total} | size: %{size_download}\n" Run this curl Return: