How can I call ApacheBench on my server which is managed by Plesk? I have no idea on which URL to enter. I understand that it needs a local address, but which address should I use?
ab -c 10 -t 60 http://xxxxxx
Lets say your server www.mypleskmanagedserver.com has an IP of 123.123.123.123
On a *nix box OTHER than your webserver type
ab -c 10 -t 60 http://123.123.123.123
EDIT: Also it would be useful to mock up some sort of testing strategy.
Find which URLS are accessed most in you web application for example www.mypleskmanagedserver.com/seriouslyheavy.php
and test them accordingly.
If you have an index page that is fairly light and doenst do any heavy processing/db comm it would be misleading to just benchmark your homepage. Mix it up.