phpmyadmin: know the import progress of sql file
Sort of; phpMyAdmin does have an upload progress bar, but there are some additional webserver dependencies:


  To be able to see a progress bar during your uploads, your server must
  have the APC extension [or] the uploadprogress one
  
  ...
  
  Moreover, the JSON extension has to be enabled in
  your PHP.
  
  If using APC, you must set apc.rfc1867 to on in your php.ini.


As some background information, this is a bit difficult to determine; since phpMyAdmin runs on the server that means it has difficulty knowing the size of the file before the upload is completed, which makes it inaccurate to show progress. I've never gone to the trouble to configure these additional requirements, so I'm not sure how well this works in practice.