How to measure up/download speed from my apache web server?

I wish to see who has accessed my server and what speed they have downloaded the website at. How can this be done?

From serverfault apachequestion

• If by "who", you mean "what IP addresses", then yes, that information should be in your apache access_log. Also in that log, you'll find information as far as how much data was tranferred.

  From ErikA

• 'Who' can be seen in your access logs, the location of which is configurable but defaults (in debian) to /var/log/apache2/access.log

  'What speed' can be garnered by using the Custom Log module and dividing %B (bytes sent) by %T (time to serve the request).

  ErikA : +1 on the speed calculation - I hadn't thought of that.
  From pjz