On Mac OS X 10.6.4 with Safari 5.0.1 I entered a web address in the browser bar and sometimes it's lighting fast, and sometimes terribly slow. My wifi connection has a perfect signal strength and the router is a cable modem from Time Warner.
I want to find out exactly where the bottle neck is when a page is loading slow so I can then fix that problem. This isn't a case where the site I'm connecting to happens to have a lot traffic that day and it's just slow, this is a recurring problem with this mac and this wifi connection. Often if I just quit Safari and re-launch it the same URL will load very quickly.
What tool can I run to basically see the http call in debug mode?