Timing Page Responses With Curl
Timing web requests is possible in curl using the -w or --write-out flag. This flag takes a number of different options, including several time based options.
These timing options are useful for testing the raw speed of requests from a web server and can be an important tool when improving performance and quickly getting feedback on the response.
The -w or --write-out flag in curl has a number of different options, far more than I can add here. You can use these options by surrounding them in a "%{parameter}" structure and passing this as a string to the -w flag.